HomeMy WebLinkAboutIndependent Contractor Agreement with Clima-Tech for Supply and Installation of Auto Temp Control SystemAGREEMENT FOR INDEPENDENT CONTRACTOR SERVICES
AUTOMATIC TEMPERATURE CONTROL SYSTEM
PROJECT #1322B
THIS AGREEMENT FOR INDEPENDENT CONTRACTOR RACTOR SERVICES is made
this 9 day of August, 2011, and entered into by and between the City of Meridian, a
municipal corporationorganized under the laws of the State of Idaho, hereinafter
referred to as "CITY", 33 East Broadway Avenue '
. y ,Meridian, Idaho 83642, and Clima-
Tech Corporation, hereinafter referred to as "CONTRACTOR",
whose business address
is 875 W. McGregor Ct. Ste 180 Boise and whose Public ID 83705 c Works Contractor
License # is C-10307.
INTRODUCTION
Whereas, the City has a need for services involving =pply and
Installation of Automatic Tem erature Control S stem • and
WHEREAS, the Contractor is special) trained
competent y experienced and
com
p t to perform and has agreed to provide such services;
NOW, THEREFORE, in consideration of the mutual promises, covenants,
terms and conditions hereinafter contained thearti •
p es agree as follows.
TERMS AND CONDITIONS
1. Scope of Work:
1.1 CONTRACTOR shall perform and furnish to the City ty upon execution of
this Agreement and receipt of the City's written notice
Y to proceed, all services
and work, and comply in all respects, as specified in
p the document titled
"Scope of Work a copy of which is attached her '
hereto as Exhibit A and
incorporated herein by this reference, together with any amendments that
may be agreed to in writing by the parties.
1.2 All documents, drawings and written workr
p oduct prepared or
produced by the Contractor under this Agreement, including ng and without
limitation electronic data files, are thero ert of the
p p y Contractor; provided,
however, the City shall have the right to reproduce, publish 9 p , p sh and use all such
work, or any part thereof, in any manner and for an purposes y p p s whatsoever
and to authorize others to do so. If an such work is copyrightable, y py ghtable, the
Contractor may copyright the same, except that as to
p any work which is
copyrighted by the Contractor, the City reserves a royalty -free, non-
exclusive,
irrevocable rrevocable license to reproduce, publish and use such work, or any part
thereof, and to authorize others to do so.
1.3 The Contractor shall provide services and work under this Agreement
consistent with the requirements and standards established b applicable
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federal, state and city laws, ordinances, regulations and resolutions. ons. The
Contractor represents and warrants that it willerform its work in accordance
cordance
with generally accepted industry standards and practices for the profession
. p p ss�on
or professions that are used in performance of this Agreement and that tare
in effect at the time of performance of this Agreement. Except for g p o that
representation and any representations made or contained in any proposal
submitted by the Contractor and any reports oro inions prepared or
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as part of the work performed by the Contractor under this Agreement,
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Contractor makes no other warranties, ether express or implied, as art of
s Agreement.
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.
1.4 Services and work provided by the Contractor at the City's request
equest
under this Agreement will be performed in a time) manner in accordance
ance
with a Schedule of Work, which the parties hereto shall agree to. The
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Schedule of Work may be revised from time to time upon mutual
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consent of the parties.
2. Consideration
2.1 The Contractor shall be compensated on a LumpSum basis s as
provided in Exhibit B "Payment Schedule" attached hereto and b reference
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e a part hereof for the Not -To -Exceed amount of $479,441.00.
2.2 The Contractor shall provide the City with a month) statement as the
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work warrants, of fees earned and costs incurred for servicesrovided during
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the billing period, which the City will pay within 30 days of receipt of a correct
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invoice and approval by the City. The City will not withhold any Federal or
State income taxes or Social Security Taxfrom an payment made b Ci to
Contractor under the terms and condition. Y p Y y City s of . this A Agreement. Payment of all
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taxes and other assessments on such sums is the sole responsibility of
Contractor.
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2.3 Except as expressly provided in this Agreement, Contractor shall not
be entitled to receive from the City any additional consideration
compensation, salary, wages, or other type of remuneration for services
rendered under this Agreement including, but not limited to, meals, lodging,
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transportation, drawings, renderings or mockups. Specifically, Contractor
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shall not be entitled by virtue of this Agreement to consideration in the form
of overtime, health insurance benefits, retirement benefits, aid holidays or
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other paid leaves of absence of any type or kind whatsoever.
3. Term:
3.1 This agreement shall become effective upon execution by both
parties, and shall expire upon (a) completion of the agreed upon work, (b)
May 31, 2012 or (c) unless sooner terminated as provided below or unless
some other method or time of termination is listed in Exhibit A.
3.2 Should Contractor default in the performance of this Agreement or
materially breach any of its provisions, City, at City's option, may terminate
this Agreement by giving written notification to Contractor.
3.3 Should City fail to pay Contractor all or any part of the compensation
set forth in Exhibit B of this Agreement on the date due, Contractor, at the
Contractor's option, may terminate this Agreement if the failure is not
remedied by the City within thirty (30) days from the date payment is due.
3.4 TIME FOR EXECUTING CONTRACT AND LIQUIDATED
DAMAGES
Upon receipt of a Notice to Proceed, the Contractor shall have until
May 31, 2012 to complete the work as described herein. Contractor
shall be liable to the City for any delay beyond this time period in the
amount of five hundred dollars ($500.00) per calendar day. Such
payment shall be construed to be liquidated damages by the Contractor
in lieu of any claim or damage because of such delay and not be
construed as a penalty.
3.4.A EXCEPTIONS:
Delays caused by negligence of Owner or acts of God will not be
assessed on the Contractor.
Termination:
If, through any cause, CONTRACTOR, its officers, employees, or agents
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fails to fulfill in a timely and proper manner its obligations under this
Agreement, violates any of the covenants, agreements, or stipulations of this
Agreement, falsifies any record or document required to be prepared under
this agreement, engages in fraud, dishonesty, or any other act of misconduct
in the performance of this contract, or if the City Council determines that
termination of this Agreement is in the best interest of CITY, the CITY shall
thereupon have the right to terminate this Agreement by giving written notice
to CONTRACTOR of such termination and specifying the effective date
thereof at least fifteen (15) days before the effective date of such
termination. CONTRACTOR may terminate this agreement at an time b
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giving at least sixty (60) days notice to CITY.
In the event of any termination of this Agreement, all finished or unfinished
documents, data, and reports prepared by CONTRACTOR under this
Agreement shall, at the option of the CITY, become its property, and
CONTRACTOR shall be entitled to receive just and equitable compensation
for any work satisfactorily complete hereunder.
Notwithstanding the above, CONTRACTOR shall not be relieved of liability to
the CITY for damages sustained by the CITY by virtue of any breach of this
Agreement by CONTRACTOR, and the CITY may withhold any payments to
CONTRACTOR for the purposes of set-off until such time as the exact
amount of damages due the CITY from CONTRACTOR is determined. This
provision shall survive the termination of this agreement and shall not relieve
CONTRACTOR of its liability to the CITY for damages.
4. Independent Contractor:
4.1 In all matters pertaining to this agreement, CONTRACTOR shall be
acting as an independent contractor, and neither CONTRACTOR nor any
officer, employee or agent of CONTRACTOR will be deemed an employee of
CITY. Except as expressly provided in Exhibit A, Contractor has no authority
or responsibility to exercise any rights or power vested in the City and
therefore has no authority to bind or incur any obligation on behalf of the
City. The selection and designation of the personnel of the CITY in the
performance of this agreement shall be made by the CITY.
4.2 Contractor, its agents, officers, and employees are and at all times
during the term of this Agreement shall represent and conduct themselves as
independent contractors and not as employees of the City.
4.3 Contractor shall determine the method, details and means of
performing the work and services to be provided by Contractor under this
Agreement. Contractor shall be responsible to City only for the requirements
and results specified in this Agreement and, except as expressly provided in
this Agreement, shall not be subjected to City's control with respect to the
physical action or activities of Contractor in fulfillment of this Agreement. If in
the performance of this Agreement any third persons are employed by
Contractor, such persons shall be entirely and exclusively under the direction
and supervision and control of the Contractor.
5. Indemnification and Insurance:
CONTRACTOR shall indemnify and save and hold harmless CITY from and
for any and all losses, claims, actions, judgments for damages, or injury to
persons or property and losses and expenses and other costs including
litigation costs and attorney's fees, arising out of, resulting from, or in
connection with the performance of this Agreement by the CONTRACTOR,
its servants, agents, officers, employees, guests, and business invitees, and
not caused by or arising out of the tortious conduct of CITY or its employees.
CONTRACTOR shall maintain, and specifically agrees that it will maintain,
throughout the term of this Agreement, liability insurance, in which the CITY
shall be named an additional insured in the minimum amounts as follow:
General Liability One Million Dollars ($1,000,000) per incident or occurrence,
Automobile Liability Insurance One Million Dollars ($1,000,000) per incident
or occurrence and Workers' Compensation Insurance, in the statutory limits
as required by law.. The limits of insurance shall not be deemed a limitation
of the covenants to indemnify and save and hold harmless CITY; and if CITY
becomes liable for an amount in excess of the insurance limits, herein
provided, CONTRACTOR covenants and agrees to indemnify and save and
hold harmless CITY from and for all such losses, claims, actions, or
judgments for damages or injury to persons or property and other costs,
including litigation ation costs and attorneys, fees, arising out of, resulting from, or in connection with the performance of this Agreement by the Contractor or
Contractor's officers, employs, agents, representatives or subcontractors and
resulting in or attributable to personal injury, death, or damage or destruction
to or tangible intangible property, including use of. CONTRACTOR shall
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provide CITY with a Certificate of Insurance, or other proof of insurance
evidencing CONTRACTOR'S compliance with the requirements of this
paragraph and file such proof of insurance with the CITY at least ten (10)
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days prior to the date Contractor begins performance of it's obligations under
this Agreement. In the event the insurance minimums are changed,
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CONTRACTOR shall immediately submit proof of compliance with the
changed limits. Evidence of all insurance shall be submitted to the City
Purchasing Agent ent with a copy to Meridian City Accounting, 33 East
Broadway Avenue, Meridian, Idaho 83642.
5.2 Any deductibles, self-insured retention, or named insureds must
be declared in writing and approved by the City. At the option of the City,
either: the insurer shall reduce or eliminate such deductibles, self-insured
retentions or named insureds; or the Contractor shall provide a bond, cash or
letter of credit guaranteeing payment of losses and related investigations,
claim administration and defense expenses.
5.3 To the extent of the indemnity in this contract, Contractor's
Insurance coverage shall be primary insurance regarding the City's elected
officers, officials, employees and volunteers. Any insurance or self-
insurance maintained by the City or the City's elected officers, officials,
employees and volunteers shall be excess of the Contractor's insurance and
shall not contribute with Contractor's insurance except as to the extent of
City's negligence.
5.4 The Contractor's insurance shall apply separately to each insured
against whom claim is made or suit is brought, except with respect to the
limits of the insurer's liability.
5.5 All insurance coverages for subcontractors shall be subject to all of
the insurance and indemnity requirements stated herein.
5.6 The limits of insurance described herein shall not limit the liability of
the Contractor and Contractor's agents, representatives, employees or
subcontractors.
6. Bonds: Payment and Performance Bonds are required on all Public Works
Improvement Projects.
7. Warranty: Contractor must warrant parts and labor for one year.
Notices: An and all notices required to be given by either of the parties
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hereto unless otherwise stated in this agreement, shall be in writing and be
deemed communicated when mailed in the United States mail, certified,
return receipt requested, addressed as follows:
City of Meridian
Purchasing Manager
33 E. Broadway Avenue
Meridian, Idaho 83642
Clima-Tech Corporation
Attn: Jen Johnson
875 W. McGreggor Ct., Ste. 180
Boise, ID 83705
Ph. (208) 377-9755
Jeni(aclima-tech.com
Idaho Public Works License #: C-10307
Eitherart change their address for the purpose of this paragraph
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bYg g ivin written notice of such change to the other in the manner herein
provided.
9. AttorneyFees: Should any litigation be commenced between the parties
hereto concerning ithis Agreement, the prevailing party shall be entitled, n
addition to an other relief as may be granted, to court costs and reasonable
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attorneys' fees as determined by a Court of competent jurisdiction. This
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provision shall be deemed to be a separate contract between the partes and
shall survive any default, termination or forfeiture of this Agreement.
10. Time is of the Essence: The parties hereto acknowledge and agree that
time is strictly of the essence with respect to each and every term, condition
andp rovision hereof, and that the failure to timely perform any of the
obligations hereunder shall constitute a breach of, and a default under, this
Agreement by the party so failing to perform.
11. Assignment: It is expressly agreed and understood by the parties hereto,
that CONTRACTOR shall not have the right to assign, transfer, hypothecate
or sell any of its rights under this Agreement except upon the prior express
written consent of CITY.
12. Discrimination Prohibited: In performing the Work required herein,
CONTRACTOR shall not unlawfully discriminate in violation of any federal,
state or local law, rule or regulation against any person on the basis of race,
color, religion, sex, national origin or ancestry, age or disability.
13. Reports and Information:
13.1 At such times and in such forms as the CITY may require, there shall
be furnished to the CITY such statements, records, reports, data and
information as the CITY may request pertaining to matters covered by this
Agreement.
13.2 Contractor shall maintain all writings, documents and records
prepared or compiled in connection with the performance of this Agreement
for a minimum of four (4) years from the termination or completion of this or
Agreement. This includes any handwriting, typewriting, printing, photo static,
photographic and every other means of recording upon any tangible thing,
any form of communication or representation including letters, words,
pictures, sounds or symbols or any combination thereof.
14. Audits and Inspections: At any time during normal business hours and as
often as the CITY may deem necessary, there shall be made available to the
CITY for examination all of CONTRACTOR'S records with respect to all
matters covered by this Agreement. CONTRACTOR shall permit the CITY to
audit, examine, and make excerpts or transcripts from such records, and to
make audits of all contracts, invoices, materials, payrolls, records of
personnel, conditions of employment and other data relating to all matters
covered by this Agreement.
15. Publication, Reproduction and Use of Material: No material produced in
whole or in part under this Agreement shall be subject to copyright in the
United States or in any other country. The CITY shall have unrestricted
authority to publish, disclose and otherwise use, in whole or in part, any
reports, data or other materials prepared under this Agreement.
16. Compliance with Laws: In performing the scope of work required
hereunder, CONTRACTOR shall comply with all applicable laws, ordinances,
and codes of Federal, State, and local governments.
17. Changes: The CITY may, from time to time, request changes in the Scope
of Work to be performed hereunder. Such changes, including any increase
or decrease in the amount of CONTRACTOR'S compensation, which are
mutually agreed upon by and between the CITY and CONTRACTOR, shall
be incorporated in written amendments (Change Orders) which shall be
executed with the same formalities as this Agreement.
18. Construction and Severability: If any part of this Agreement is held to be
invalid or unenforceable, such holding will not affect the validity or
enforceability of any other part of this Agreement so long as the remainder of
the Agreement is reasonably capable of completion.
19. Waiver of Default: Waiver of default by either party to this Agreement shall
not be deemed to be waiver of any subsequent default. Waiver or breach of
any provision of this Agreement shall not be deemed to be a waiver of any
other or subsequent breach, and shall not be construed to be a modification
of the terms of this Agreement unless this Agreement is modified as provided
above.
20. Advice of Attorney: Each party warrants and represents that in executing
this Agreement, it has received independent legal advice from its attorney's
or the opportunity to seek such advice.
contains the entire agreement 21. Entire Agreement: This Agreement of the.
• I other agreements or understandings, oral
parties and supersedes any and al g
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of written, whether previous to the execution hereof or contemporaneous
herewith.
• order or precedence shall be the contract
22. Order of Precedence. The p .
agreement, the Invitation
for Bid document, then the winning bidders
submitted bid document.
23. Applicable Law. This Agreement
shall be governed by and construed and
.enforced in .accordance
with the laws of the State of Idaho, and the
ordinances of the City of Meridian.
Agreement shall not become effective or binding
24. Approval Required: This Ag.
until approved by the City of Meridian.
CITY OF MERIDIAN 1
BY:
TAM e WEERD, MAYOR
Dated:
Attest:
JAYC
L H
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r
CLIMA-TECH CORPORATION
pe0000jo—en J nson
Dated: 7//]///
Approved as to Content
Sys
KEITbI`WATTS, PYJRCSING MANAGER
Dated: B-11-1
Approved as to Form
CITY ATTORNEY
Department Approval
NAME: JOHN MCCORMICK
TITLE: PW BUSINESS OPERATIONS
KAAKinr,PQ
Dated: 6-11-11
Exhibit A
SCOPE OF WORK
DDC SYSTEM
SPECIFICATIONS
Meridian City Hall
Meridian, Idaho
May 17, 2011
Tj
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Contents
14
OVERVIEW................................................................................................................................................
. 14
A. Statement of Intent............................................................................................................................
. 14
B. Specification Compliance..................................................................................................................
14
C. Approved DDC Contractor and System............................................................................................
.
14
D. Warranty............................................................................................................................................
14
E. Alternate 2 —Extended Warranty.......................................................................................................
14
SCOPEOF WORK......................................................................................................................
...............
14
A. Control Hardware and Software.........................................................................................................
Control
16
B. Control Wiring and Interface to Line Voltage ........................................................................
16
C. Commissioning
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D. Training and Technical Support.............................................................................
17
SUBMITTALS AND O&M MANUALS.........................................................................................................
.. 17
A. Submittals........................................................................................................................................
17
B. O&M Manuals....................................................................................................................................
17
CONTRACTORCAPABILITY....................................................................................................................
PRODUCTCAPABILITY -HARDWARE....................................................................................................18
18
A. System Server...................................................................................................................................
18
B. Field Hardware...................................................................................................................................
18
C. Distributed Control.............................................................................................................................
D. Ethernet Gateway Routers................................................................................................................19
19
E. Control Modules.................................................................................................................................
19
F. Temperature Sensors........................................................................................................................
20
G. Valve and Damper Actuators............................................................................................................
20
H. Dampers............................................................................................................................................
20
I. Wire.....................................................................................................................................................
PRODUCTCAPABILITY -SOFTWARE....................................................................................................
20
20
A. BACnet Compatibility.........................................................................................................................
21
B. Multiple Operating Platforms..............................................................................................................
21
C. Graphical Programming
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D. Graphical Interface Software.............................................................................................
23
E. Software Graphic Programming Live User Interface.........................................................................
23
F. Facility Management And Energy Management Functions................................................................
23
G. Demand Control................................................................................................................................
H. Demand Control -Alternate 1............................................................................................................23
I. Interactive Operations.........................................................................................................................23
J. Enterprise Integration.........................................................................................................................24
K. Alarms, Trends And Reports.............................................................................................................24
25
EXECUTION...............................................................................................................................................
25
A. General..............................................................................................................................................
25
B. Wiring and Raceways........................................................................................................................
System
C. Demolition of Existing Control ...............................................................................................25
D. Relocation of Underfloor VAV Boxes.................................................................................................26
26
SEQUENCESOF OPERATION.................................................................................................................
26
A. General (Common to All Equipment Sequences)..............................................................................
B. Zone Sequences................................................................................................................................
28
31
C. Variable Air Volume Air Handling Units.............................................................................................
36
D. Underfloor Pressurization Control (Air Highway Terminals)..............................................................
E. Heating Water System.......................................................................................................................36
F. Chilled Water System........................................................................................................................38
G. Fan Coils FCU 2 — 5..........................................................................................................................40
H. Exhaust Fan Contol...........................................................................................................................40
I. Miscelleanous Monitoring Points.........................................................................................................41
41
J. Alternate 1 -Energy Metering....:........................................................................................................
a r)
OVERVIEW
A. Statement of Intent
The system shall be an extension of the existing Automated Logic control system
currently providing rovidin control of the server room systems. Interface for the new controls shall be integratedTM into City of Meridian existing WebCTRL frontend
software. Thera hical user interface shall display real time values of all system
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operating conditions. Additionally, it shall include graphic displays of system
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programming, operating logic and logic flow. It shall be capable of displaying that
logic flow with real time values of logical inputs and outputs. Graphical displays
shall be consistent with those currently available for the server room equipment.
The features of the system must be fully installed, configured and demonstrated
in a manner that provides maximum benefit to the end user.
Remote Access shall completed per the attached Remote Access Procedure on
page 60 of this document.
B. Specification Compliance
These specifications are intended to provide a minimum capability for the DDC
system. Manufacturers data sheets included in the submittals will be reviewed to
verify significant nificant hardware and software system features. Key system features
must be documented by manufacturer's data sheets in the submittals or by
demonstration of an existing installation.
C. Approved DDC Contractor and System
DDC Control System shall be:
Automated Logic WebCTRL by Clima-Tech Corporation or approved equal.
Contractors wishing to provide pricing for this project shall submit request to Keith
Watts City of Meridian Purchasing Manager not later than 14 working days prior
to bid opening date. This is to allow for demonstration of their ability to interface
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with existing software.
D. Warranty
Warrant shall cover all new parts and labor furnished in the scope of this
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specification for a period of one year following completion of Functional
Testing.
E. Alternate 2 — Extended Warranty
Warranty shall cover all new parts and labor furnished in the scope of this
specification for a period of five years following completion of Functional
Testing.
SCOPE OF WORK
A. Control Hardware and Software
Automatic Temperature Control (ATC) Contractor shall be responsible to furnish
Page 14
and install all control hardware and software necessary for complete DDC control
system as specified. ATC contractor shall furnish all modules, temperature
sensors, flow sensors humiditysensors, IAQ sensors, control valves, control
valve actuators, dam damper actuators and any other items necessary fora
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sequence and se of operation, except where existing components
can be re y newsystem. used b the stem. The ATC contractor is allowed to reuse
existing compo,
nents however verification of operation shall be included in a
Log. Point Checkout
Lo . Contractor will prepare a list of non-operational
replacement ricin for City review prior to installation of
components with p pricing
replacement components. The Cit retains the option of obtaining alternate
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pricing for these replacement components.
1. Specifically the ATC Contractor shall furnish the following:
a. Individual unitary control modules for each unitary system:
1) Underfloor Fan CoilNAV Boxes w/Reheat
2) Underfloor VAV Boxes w/out Reheat
3) Overhead Fan Powered VAV Boxes w/Reheat
b. Individual control modules for all non unitary air handlers or package units:
1) VAV Air Handling Units
2 Underfloor Pressurization Control Boxes w/Reheat (Control For Air Highways)
c. Generalp urpose modules for control of central fan, pump, chiller, boiler or tower operation:
1) Hot Water Central Plant Operations
2) Chilled Water Central Plant Operations
3) General Make Up and Relief Control Dampers
4) Misc Exhaust Fan Controllers
5) Monitoring of Sewage Pumps
6) Monitoring of Emergency Generator Status
7) Monitoring of Run Status for Fresh Water Pumps
8) Monitoring of Glycol Make Up Alarm
d. Required peripheral mechanical components to be furnished by ATC contractor:
1) Existing dampers and actuators for underfloor boxes are to be replaced under the
scope of this project. Actuators shall be fully modulating.
2) Damper and valve actuators on primary air and water systems shall be assessed
during installation and deficiencies shall be reported to the City of Meridian
3) Low pressure air highway extensions shall be added at five designated locations
e. Required software integration to other digital control systems:
f. Interface to variable frequency drives
Page 15
g. Alternate 1 Energy Metering
Installation of g
digital as meter, electrical current transformers and control
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connection wiring shall be priced under a separate proposal. All software
programming required for energy metering and Dashboard are to be
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included within the scope of this Alternate.
1) Gas Metering
2) Electric Metering
3) EnergyVu Dashboard
B. Control Wiring and Interface to Line Voltage Control
ATC Contractor shall be responsible for control wiring to all control modules,
sensors relays and actuators required to meet sequences of operation. ATC contractor shall provide mechanical control interface to boilers, chillers, pumps
and fans for a complete and operational system. ATC Contractor shall provide
all control conduit as required.
C. Commissioning
ATC Contractor shall be responsible for self -commissioning of all hardware and
software furnished with the project. Completed field Point Checkout sheets
shall be included with the final "as -built" O&M manuals. These sheets shall
include validation check fields for all physical and LAN inputs and outputs.
Each system and point shall be listed, using logical names for future reference
by the owner. Commissioning shall include calibration and verification of
operation of each 1/0 and graphic field.
Contractor shallerform Functional Testing of software programming to verify
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that the programs meet sequences of operation as submitted and approved.
Functional Tests shall be documented for each unique program and for each
individual sequence within that program. Functional Test verification sheets
shall be included in final "As Built" documentation.
D. Training and Technical Support
Contractor shall provide access to a three-day training class in a classroom
setting p for u to four employees of the City of Meridian. Training shall be
oriented to making the owner self-sufficient in the day to day use and operation
of the DDC system. Additionally the training shall include information
specifically focused on showing the owners representative methods of
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troubleshooting the mechanical systems using the DDC system. For this
purpose, the trainer must be well grounded in both DDC system operation and
in mechanical systems service.
The contractor shall provide unlimited phone technical support to the owner's
representative during the first year of warranty. If the technical support location
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of the contractor is outside of the toll free calling area for the customer, the
contractor shall have a toll free number or accept collect calls for the purpose of
providing technical support.
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' ' required technical support and training Contractor shall make
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access to facto approved training classes. Classes shall be
available acc factory pp .. ,
d multiple times during the first year to allow flexibility for Owner's
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representative to attend. Tuition to these classes shall be included within the
scope oft project. ect. If course locations are more than 200 miles from the
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project site, i cost of transportation, lodging and meals shall be included within
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the scope of this project.
SUBMITTALS AND O&M MANUALS
A. Submittals
1. Submittals shall include the following sections:
a. Shop Drawings with:
b. Title Page
c. Table of Contents
d. Typical Device Wiring Drawings
e. Summary Bill of Materials
f. Sequences of Operation
g. Local Area Network Drawings
h. Drawings for all operating systems showing both equipment and module connections.
i. Bill of Materials for each equipment drawing
j. Manufacturers specification data sheets for all control modules, sensors, dampers, valves,
actuators, flow switches, current sensors and transducers required in the project.
If the contractor wishes to substitute any item after approval of submittal
the shall submit appropriate data sheets for approval to the City of
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Meridian before including substituted product on the project.
B. O&M Manuals
1. O&M Manuals shall be furnished upon project completion and include technical instructions for
all items originally included in the submittal with "as built" modifications and completed
Commissioning Worksheets.
2. O&M Manuals shall be in a separate three ring binder.
3. Contractor's toll free technical support number or the words "Call Collect" with the contractor's
regular phone number shall be on the front of the manual.
CONTRACTOR CAPABILITY
1. Contractor service and installation technicians shall be technically proficient in both control
systems and mechanical service without subcontracting to any other entity.
Page 17
2. Contractor shall maintain toll-free technical support phone line or accept collect phone calls
during warranty period.
3. Contractor shall provide service within 4 hours.
PRODUCT CAPABILITY - HARDWARE
A. System Server
Software shall be installed on owner furnished server. Specifications for this
server will be provided to the owner prior to installation.
B. Field Hardware
1. BACnet Compatibility
The system shall be fully native BACnet at the time of installation. The
system shall use BACnet as the native communication protocol between
distributed controllers communicating on the controller network (i.e. Field Bus)
and must, as a minimum, support the following Objects and Application
Services (Conformance Class 3):
a. Objects
1) Binary Input
2) Binary Output
3)
Binary Value
4)
Analog Input
5)
Analog Output
6)
Analog Value
7) Calendar
8) Schedules
b. Services
1) Readproperty
2) Writeproperty
3) I -Am
4) I -Have
5) ReadMultiple Property
6) WriteMultiple Property
7) Who -Has
8) Who -Is
C. Distributed Control
System shall observe the concept of distributed control. All modules shall have
Page 18
"stand alone" capability and shall maintain operator setpoints without connection to
primary controllers or central station equipment. Modules shall be located at each
operating equipment location such that individual systems or zones shall remain
functional without communication to other systems on the network. Equipment
operating logic, schedules and current trends shall reside in control modules serving
each system. Use of global modules required to maintain programming, schedules
or current trend data are not acceptable.
D. Ethernet Gateway/Router
System shall include an Ethernet Gateway/Router between the control module
network and owner's Ethernet. This gateway shall route BACnet communications
between the control module network and the owner's IP network. If the system is
not to be connected to customer Ethernet the gateway shall be capable of
connection via a web browser on the local host server.
E. Control Modules
1. Control modules shall include required inputs and outputs to meet sequence of operation and
points list.
2. Digital outputs shall be dry contact relays and analog outputs shall be industry standard 0-5
vdc, 0-10 vdc, 2-10 vdc or 4-20 milli -amp. Triac digital outputs are not acceptable.
3. Modules shall be fully programmable for maximum system flexibility. Application specific
controllers are not acceptable.
4. All schedules and current trends shall be maintained in the individual control modules.
5. The modules shall be capable of maintaining sufficient trend samples to report 24 hours of
trend history in 5 minute increments for each input or output.
6. All modules shall have battery backup capable of maintaining all programs, setpoints,
schedules and trend information for a minimum of 7 days.
F. Temperature Sensors
1. Temperature sensors shall be 10 k ohm thermistor.
2. Zone sensors in primary occupied areas other than restrooms, hallways or storage rooms shall
have setpoint adjustment to allow the occupants to raise or lower setpoint within operator
defined parameters.
3. Additionally sensors in these primary areas shall have a push button to return the system to
normal occupancy setpoints for an operator defined period.
4. Exception will be common areas.
a. Zone sensors for auditoriums or other places of assembly, restrooms, hallways and storage
areas, shall have a similar appearance to other sensors in the building however they will
not have setpoint adjustment or override capabilities.
5. Immersion sensors shall be mounted in a blind well for future serviceability.
6. Averaging sensors shall be used in mixed air plenums.
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G. Valve and Damper Actuators
1. Actuators shall be manufactured by Belimo.
2. Actuator torque shall be rated for required load.
3. Modulated actuator input shall be industry standard 0-10 vdc, 2-10 vdc, 4-20 milli -amp, floating
motor (tri-state), or pulse width modulation.
4. Two or three position operation is not acceptable for economizers, VAV dampers, underfloor
supply air dampers, multizone dampers, valves or any other application specifying modulated
operation.
H. Dampers
1. Air control zone dampers shall be Ruskin CD45 or equal and have leakage rates of 1 % or less
when tested with AMCA Standard 500.
I. Wire
1. All wiring not in raceways or control cabinets shall be rated for plenum installation.
2. All wires and cables shall meet the requirements of the National Electrical Code.
PRODUCT CAPABILITY - SOFTWARE
A. BACnet Compatibility
1. The system shall be fully native BACnet at the time of installation. This means that the system
must use BACnet as the native communication protocol between distributed controllers
communicating on the controller network (i.e. Field Bus) and must, as a minimum, support the
following Objects and Application Services (Conformance Class 3):
a. Objects
1)
Binary Input
2)
Binary Output
3)
Binary Value
4)
Analog Input
5)
Analog Output
6)
Analog Value
7)
Calendar
8)
Schedules
b. Services
1) Readproperty
2) Writeproperty
3) I -Am
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4) I -Have
5) ReadMultiple Property
6) WriteMultiple Property
7) Who -Has
8) Who -Is
2. Programming for the system shall use BACnet objects and services.
a. All BACnet objects and services shall be opened for read and/or read/write access during
programming for future exposure to other BACnet systems.
b. The front end software for the system shall be able to query other third party BACnet points
for read/write access.
B. Multiple Operating Platforms
The front end server software furnished as a part of the DDC system shall be
capable of operating on multiple operating systems such as Microsoft Windows,
Linux or Sun Solaris.
C. Graphical Programming
1. The system shall be programmed using a graphical programming language for ease of
operator understanding.
2. Operating sequences and logic flow shall be assembled in a schematic format using
MicroBlocks representing inputs, outputs and logical functions such as setpoints, switches,
limits, relays, PIDs etc.
3. Full simulation capability shall also be provided with the graphic programming.
a. User shall be able to fully simulate the constructed sequence on screen before the
sequences are downloaded into the controllers.
b. The system shall also include the ability to simulate multiple graphic programs
communicating with each other on a simulated network.
4. The programming software shall be furnished within this scope of work.
D. Graphical Interface Software
1. Graphical Operator Interface
a. The operator's interface software shall be graphical based and display in 256 colors at a
minimum 1024x768 pixel resolution.
b. Graphics display screens shall include a system level graphic of either a map of facilities or
an elevation of the building, a graphic of each building floor plan and graphics for each
operating system or unit within each building.
C. Entry to the zone and equipment level interface graphics shall be through area maps and/or
floor plans to facilitate user orientation.
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d. Additionally the system hierarchy shall be displayed in a fashion similar to Windows
Explorer to enable the user to navigate to any graphical screen in the system by expanding
building levels or floor levels and selecting a particular zone or system.
e. Graphics shall be accessed by using a mouse or other pointer device.
f. The system shall provide a visual indication of which building, floor and zone the user is
accessing at any time.
g. System shall be capable of changing all parameters and schedules, as well as downloading
operating software from the same Graphical User Interface software program as that used
for viewing system operation.
h. Software for creating or modifying graphics shall be furnished within this scope of work.
2. Thermal Graphics
a. Thermal graphic floor plans shall display each temperature zone in a color appropriate to
current space temperature conditions.
b. The system shall display zone temperature conditions in 8 separate colors the following
conditions:
1) High or low temperature alarm
2) Temperature at setpoint
3) Cooling call
4) Heating call
5) Temperature more than 20 above setpoint
6) Temperature more than 2° below setpoint
7) Unoccupied mode between setpoints
8) No communication.
c. Floor plans shall also include color graphic indicators for non -zone specific mechanical
equipment operation showing On/Off and Alarm Conditions.
d. Status indication colors shall be updated dynamically as conditions change.
3. Mechanical Equipment Graphics
a. Mechanical equipment pictorial graphics shall be displayed by the use of point -and -shoot
selection using a mouse or other pointer device.
b. Graphics shall be provided for all mechanical equipment and devices controlled by the DDC
system.
c. These graphics shall provide a current status of all 1/0 points being controlled and
applicable to each piece of equipment including analog readouts in appropriate
engineering units, i.e. damper position in percent or duct pressure in inches water column,
at appropriate locations on the graphic representation.
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E. Software Graphic Programming Live User Interface
1. The system shall be able to display the graphic displays of system programming, operating
logic and logic- flow with real time conditions displayed at each input, output and logical
function.
2. This display will allow the operator to observe each step of a control logic process and facilitate
system troubleshooting.
3. Operator shall have the ability to select any MircoBlock in the graphical program to change
parameters, including the ability to lock values.
F. Facility Management And Energy Management Functions
1. Scheduling
a. The DDC system shall have the ability to schedule each individual zone, each building or
floor or the entire network of buildings for any user with a single entry.
b. Additionally the operator shall have the capability of assembling groups of zones, buildings
or floors for single entry programming, e.g. several offices may be grouped for scheduling
of Saturday operations.
c. Available schedule types shall include normal operation, unoccupied operation, setback
override and holidays.
d. For maximum flexibility, schedules shall reside in the local control modules.
e. Dated schedules shall be self managing and automatically delete after execution.
2. Demand Control
a. All operating zones shall include the capability_ of receiving up to 3 Demand Control Levels
and initiating progressively greater setpoints offsets to reduce zone equipment demand
and equipment demand from Source equipment systems.
b. The system will be capable of rotating greater or lower demand levels every 10 minutes to
alternate zones throughout the facility to minimize long term setpoint offset.
3. Demand Control - Alternate 1
a. Demand control shall be initiated if Alternate 1, Energy Metering, is accepted.
G. Interactive Operations
1. The system shall have the ability to send run requests, heating requests and cooling requests
from one module to another for the purpose of optimizing run operations of central plant
equipment.
2. The system shall be capable of limiting operation of various equipment based on status of
another point elsewhere in the system, e.g. a boiler loop circulating pump shall run only when
requested by a zone requiring heating operation and will shut down during hours that zone
demand is satisfied.
3. The system shall be capable of changing conditions within a program based on the status of
other systems, e.g. VAV supply air setpoints shall be able of being adjusted based on
demands of connected zones.
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H. Enterprise Integration
1. The system shall include Enterprise Integration capability and be able to:
a. Obtain web services information from other Enterprise servers for the purpose of optimizing
system operation, e.g. obtaining NOAA Weather Service for optimizing Night Flush
operation
b. Provide web services information for the purpose of optimizing other building information
systems, e.g. providing maintenance notifications to an Enterprise based facilities
maintenance software.
2. The software to enable this interface shall be provided and fully operational within the scope of
this project.
I. Alarms, Trends And Reports
1. System and Temperature Alarms
a. The system shall have the capability of monitoring conditions throughout the system and
sending alarms or messages to an e-mail address, to a local PC or printer, to remote PC's
and printers, or to dial-up pagers.
b. Alarms and messages shall be able to be prioritized for various levels of reporting and
action.
c. Alarms shall have the ability of being enabled, or disabled to minimize nuisance alarming.
d. The operator shall have the ability to customize alarm text and messages.
2. Trends
a. The system shall be capable of trending any input or output, or any logical point within the
graphic program.
b. There shall be no limitation to the number of points that can be trended at any particular
time.
c. The interval between trend samples shall be adjustable from 1 second to 24 hours.
d. Trends from one or more modules shall be able to be simultaneously displayed on a single
trend graph.
e. Operator shall be able to "window" any segment of a trend to enlarge the view by dragging
a mouse to form the "window".
f. The system shall also have the ability of automatically downloading trend information from
any module to the server or other computer connected to the network for historical trend
storage.
1) This historical trend information shall be able to be displayed on the trend graph along
with live current trends in seamless fashion.
g. Modules shall store in live memory trend samples points for each trended item.
1) Trend data collection reguiriDg the use of a locally connected PC for data storage is
unacceptable.
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3. Reports
a. The system shall be capable of generating reports of equipment run times, all trended
points, temperature conditions, electric demand and usage and alarms or messages.
b. Specifically temperature and humidity trends for the Server Room shall be configured for
easy retrieval by IT and facilities staff.
1) Alarms for the Server Room shall be coordinated with the City of Meridian
Information Technology staff.
c. The system shall also have the ability of automatically downloading report information from
any module to the server or other computer connected to the network.
d. The operator shall have the ability to create custom report and logging formats.
EXECUTION
A. General
All work shall be performed in a workmanlike manner. Occupied areas are to be
continually keep clean of debris. Unoccupied areas are to be cleaned following
each work shift.
B. Wiring and Raceways
1. Installation of wiring and cables shall be in accordance with requirements of the National
Electrical Code.
2. All wiring in open areas at heights below 12 feet must be run in conduit.
3. Control wiring above accessible ceilings or floors areas may be run open using plenum.
4. Control wiring in non -accessible ceilings, walls or floors shall be in raceways.
5. All wiring not in raceways or control cabinets shall be rated for plenum installation.
6. Raceways and cables shall be supported as required by the National Electrical Code.
7. All raceways and cable runs shall follow the contours of the building structure.
8. Communication wiring shall be run in data cable tray whenever possible.
9. Wire in data cable trays shall be clearly identified as Temperature Control wire.
C. Demolition of Existing Control System
1. The ATC contractor shall remove all unused control hardware and wiring.
2. The ATC contractor shall inform the City of Meridian of any places where removal or relocation
of control hardware requires patching or painting of wall surfaces, e.g. relocation of zone
sensors.
3. Patching and painting shall be the responsibility of the City of Meridian.
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D. Relocation of Underfloor VAV Boxes
The City of Meridian shall be responsible for relocation of underfloor VAV boxes from
areas that have been identified as having excess air flow capabilities to areas that have
been identified as having too little air flow capability.
SEQUENCES OF OPERATION
A. General (Common to All Equipment Sequences)
1. All numeric values in the Sequence of Operation shall be adjustable parameters that can be
modified without program changes or re -downloading that would interrupt system operation.
2. All Input/Output (1/0) control modules shall have sufficient memory to maintain their own
operating programs, schedules and trends without connection to the Local Area Network
(LAN).
3. All 1/0 control modules shall be equipped with battery backup and shall retain programming,
including time of day, upon loss of power. On return of power control functions shall return to
normal operation based on scheduling and time of day with no operator interface. System
shall include the capability to set delay on start parameters to start system at random intervals
to prevent demand surges on restart.
4. On loss of power to the server only, the Energy Management Control System (EMCS) shall
continue to run as normal.
5. The EMCS human interface software shall be a network service and shall automatically restart
and connect to the system when power is restored.
6. Trends
a. Trending shall be available for all BACnet input/output (1/0) points.
b. System shall be capable of adding trending for any digital or analog value as well as any
logical value in the graphical program, e.g. PID output trending.
c. Trending shall be setup for all significant 1/0 points.
1) Analog values shall be set to log every 5 minutes and store 288 data points for live
retrieval.
2) Binary points shall be set to trend on Change of Value (COV) and to store 100 COV
trend samples for live retrieval.
3) Sample frequency and quantity of stored data shall be adjustable within the memory
limits of each module.
d. Trends shall be stored in module memory.
e. Extended trending shall be available by archiving trends in server storage.
7. Schedules
a. Occupancy schedules shall be initiated from the zone level.
1) Air handling units, chillers, boilers, pumps etc. whose operation is intended to provide
air or water flow to zones shall function based on Run Requests, Cooling Requests or
Page 26
Heating Requests from the zones they serve. This equipment shall not have separate
scheduling capability.
b. System shall be capable of setting individual schedules for all zones in a customer
database, or for a campus, a single building or floor.
c. Additionally system shall be capable of assembling multiple zones for single entry
scheduling for specific functions, e.g. a Council Meetings Group could be used for single
entry scheduling of all zone equipment required for the City Council Meetings etc., or a
group of rooms used by a department that regularly requires scheduling during times when
the building would be otherwise scheduled for unoccupied setback.
d. The system shall be capable of setting specific equipment to ignore schedules for the rest
of the building, e.g. Server Room equipment.
e. System shall be capable of setting schedules for weekly reoccurring occupancy, dated
weekly, date, date range, wildcard or continuous.
f. The system shall be capable of scheduling for multiple years in advance.
g. Timed Local Override (TLO) at the local zone sensor, where required, shall override
unoccupied schedule, placing equipment in occupied operation for the programmed time
period.
8. Unoccupied Operation
a. Whenever system operation is required during unoccupied hours of operation, PID control
of heating or cooling functions shall be bypassed and systems shall go to 100% operation
until setpoint is satisfied.
b. Capability shall be in the software to set an On/Off differential greater than occupied
differential to reduce the frequency of unoccupied cycling, e.g. heating might be set to
cycle on at 550 and remain on until 580 is reached.
9. Optimal Start
a. The system shall have optimal start capability so that zone start time will be adjusted based
on indoor and outdoor temperatures so as to achieve occupied temperatures at the
scheduled occupancy time.
b. Optimal start shall be based on zone heat capacitance. The capacitance value shall be
adjustable for each zone in the program.
c. System shall be capable of a learning adaptive feature allowing the zone control to
automatically adjust the capacitance to optimize start times.
d. Both optimal start and learning shall be able to be disabled.
10. Load to Source Control
a. Central air handling equipment serving multiple zones shall operate based on Run
Requests from connected zones.
b. Central systems such as boilers, chillers and pumps shall operate based on Heating,
Cooling or Run Requests from connected air handlers or zones as required.
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c. Central systems shall have the capability of resetting Heating Water and Chilled Water
temperature setpoints, resetting Supply Air temperature or pressure setpoints or
Ventilation Air damper position based on the PID output of associated zones.
11. Night Purge (Flush) Operation
a. 1/0 control modules programming shall include logic for Night Purge operation designed to
pre -cool the facility during warm weather periods. Night Purge programming shall consist
of a Global Broadcast to initiate three levels of purge at the zone level. Each zone shall be
programmed to receive Night Purge level broadcasts and initiate logic as described below.
1) Each night the EMCS shall query the nearest National Weather Service webserver to
obtain temperature forecast for the following day to provide Purge logic for initiation of
Night Purge operation.
2) When forecast high is greater than 80°F, Purge Level III shall be broadcast to each
zone. If the forecast is between 75°F and 80°F a Level II broadcast shall be sent and
when forecast is between 70017and 75°F a Level I broadcast shall be sent.
b. Zones shall have the capability to determine action taken for each level of night purge. This
is described at the zone level.
c. Central systems programmed logic shall include the capability of receiving Night Purge
broadcast to initiate the appropriate response, e.g.central mechanical cooling equipment
such as Chillers will be disabled during Night Purge operation.
d. System shall include capability of deactivating Night Purge through the EMCS by time of
year (month and day) or manually through DDC.
12. Alarming
a. Programs shall include alarms for conditions as specified. Additionally programs shall
include alarms for all 1/0 points. Only those alarms specified are to be initially enabled.
b. The system shall have the ability for the operator to enable or disable all alarms without
program change or memory download.
c. All alarms shall be set with default messages. The system shall have the ability for the
operator to create custom messages without program change or memory download.
d. All alarms generated shall have the capability of setup for the following actions:
1) Alarm Popup
2) Print
3) Propagate To Server
4) Run External Program
5) Send Alphanumeric Page
6) Send E -Mail
7) Write to File
B. Zone Sequences
1. General Zone Sequences (Common to All Zone Sequences)
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a. Run Conditions
1) Zone shall have independent schedule capability. System shall have the ability to write
scheduling from a global schedule input, from local schedule or from a group
schedule.
2) Outside air temperature shall be available from a global broadcast for local control
options.
3) Zone control programs shall include the ability to receive a global broadcast of three
escalating demand levels. The program shall be capable of initiating zone setpoint
offset in response to each demand level. Each zone shall have the ability of enabling
demand response and to be directed to alternate demand broadcast sources.
b. Zone Setpoint Control
1) Standard zone sensors, except those noted below, shall include setpoint adjustment
and timed local override. Setpoint adjustment shall be by means of an adjustable slide
lever and setback override shall be from a button located on the sensor. Program
shall have the capability of canceling setback override by holding the momentary
contact button down for 3 seconds. Default set point adjustment shall be plus or
minus VF and timed override shall be 30 minutes per pulse with a maximum override
of 180 minutes. Adjustment values and override times shall be individually
programmable for each sensor.
i. Zone sensors located in hallways and other common areas shall not
include setpoint adjustment or local override options.
ii. Sensors in restrooms shall have the appearance of a blank single gang
electrical box cover with the thermistor mounted on the back side, inside the
junction box.
2) Zones programs shall include the ability to program independent cooling and heating
setpoints. Heating and cooling setpoint offsets from a common setpoint is not
acceptable.
3) Zone set point control shall use a modified Zone PID algorithm to provide a smooth
modulated variable for cooling and heating.
4) Zone control shall alarm on high or low zone temperature. Zone temperature alarms
shall be disabled during Optimal Start, during first 30 minutes of scheduled occupancy
or during setback override.
5) Supply air temperature (SAT) shall be monitored for all zones where local equipment
has heating or cooling capability. Terminal Unit zones without heat and that use
primary SAT for cooling or warmup do not require SA sensors.
6) Program shall have the capability of initiating an alarm or message when SAT
differential from space or return air temperature exceeds preset values.
c. Night Purge Mode
1) Night Purge setpoints shall be set by purge level from Global Night Purge Broadcast.
Level 1 Night Purge cooling setpoint shall be 69°F.
iv. Level 2 Night Purge cooling setpoint shall be 67°F.
V. Level 3 Night Purge cooling setpoint shall be 65°F.
Page 29
2) Night Purge heating setpoint shall be offset down by 5°F until scheduled occupancy.
On initiation of occupancy, heating setpoint shall be reset up 1 OF every 20 minutes
until occupied heating setpoint is reached. This is to prevent reheating a zone that has
just night purged.
3) Night purge shall begin 5 hours before scheduled occupancy when:
vi. A Night Purge Mode broadcast is received.
vii. Zone temperature is 1 ° or more above night purge setpoint.
viii. Outside air (OA) temperature is above 450 and more than 5° below zone
temperature.
4) Night Purge Mode shall end one hour prior to scheduled occupancy.
2. General VAV Terminal Unit Sequence (Common to All VAV Zones)
a. Programming for 1/0 control modules on central Air Handling Units (AHU) and associated
Terminal Units (TU) shall include network 1/0 points for communication of AHU and Zone
conditions.
1) The following network points shall be broadcast by each TU to the associated AHU for
load to source optimization.
ix. Occupied Run time
X. Unoccupied Run time
A. Zone Heating and Cooling PID Percent
xii. Zone Damper Position
xiii. Night Flush request
xiv. CO2 level
2) The following network points shall be broadcast by each AHU to associated TUs for
load to source optimization routines.
xv. AHU Supply Air Temperature
xvi. AHU Supply Static Pressure
3. Underfloor VAV Terminal Units (York Boxes w/Out Fans and HW Coil)
a. Cooling Control
1) The supply air damper shall modulate, using Analog or Floating Motor (TriState)
control, to maintain cooling setpoint except when the AHU supply air temperature
exceeds zone temperature.
4. Underfloor Fan Powered Terminal Units (York Boxes w/Fans and HW Coil)
a. Cooling Control
1) The supply air damper shall modulate, using Analog or Floating Motor (TriState)
control, to maintain cooling setpoint except when the AHU supply air temperature
exceeds zone temperature.
b. Heating Control w/Heating Water
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1) When zone heating PID reaches 10% the underfloor inlet dampers shall close
completely and the supply fan shall start.
2) Heating water valve shall modulate from 0 to 100% as zone heating PID increases
from 10 to 100% to maintain heating set point.
3) Heating shall be locked out when outside air temperature is above 65°F.
5. VAV Fan Powered Terminal Units (Basement VAV Boxes)
a. Cooling Control
1) The supply air damper shall modulate, using Analog or Floating Motor (TriState)
control, to maintain cooling set point except when the AHU supply air temperature
exceeds zone temperature.
b. Heating Control w/Heating Water (Not Included in Underfloor VAV Sequence)
1) When zone heating PID reaches 10% the underfloor inlet dampers shall close
completely and the supply fan shall start.
2) Heating water valve shall modulate from 0 to 100% as zone heating PID increases
from 10 to 100% to maintain heating set point.
3) Heating shall be locked out when outside air temperature is above 65°F.
C. Variable Air Volume Air Handling Units
1. Run Conditions
a. System shall operate based on requests from zones served by each AHU.
b. Outside air temperature from a LAN broadcast is available for control options.
c. Optimal start shall be based on optimal start requests from associated zones. Optimal stop
shall end AHU operation 5 minutes before the last VAV box goes into setback.
2. Supply Fan Enable
a. The supply fan shall be continuously enabled whenever any zone is operating in an
occupied mode and shall cycle on zone demand for cooling to maintain unoccupied zone
setpoints.
b. If supply air flow from the AHU is required for unoccupied heating at the zones, the fan shall
cycle on demand for zone heating to maintain unoccupied zone heating setpoints.
c. During Night Purge operation fan shall run when requested for Night Purge cooling.
d. Fan motor status shall be monitored. If supply fan has been commanded to run by the
DDC system and the fan status is not indicated, the DDC system shall send an alarm to
the operator workstation.
3. Return Fan Enable
a. Return fan shall start whenever supply fan is enabled. If supply fans fails to prove status
the return fan shall shut down.
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b. Return fan motor status shall be monitored. If return fan has been commanded to run by
the DDC system and the fan status is not indicated, the DDC system shall send an alarm
to the operator workstation.
4. Supply Air Temperature Setpoint Reset
a. Occupied Mode
1) Reset of SA temperature shall be based on cooling demand from VAV zones.
a) The cooling PID value from each box shall be broadcast to this AHU controller.
b) The PID value from the boxes with the highest cooling PIDs shall be used for
reset.
2) Initial setpoint for supply air temperature shall be 75°F.
3) When any box has a cooling PID more than 10%, SA temperature shall be reset to
65°F.
4) When cooling PID for two or more zones reach 90%, SAT setpoint shall be reset down
1 OF every five minutes. Minimum supply setpoint shall be 55°F.
5) When the highest cooling PID drops to 50%, cooling demand shall be reset up 1 OF
every five minutes until maximum PID stops decreasing at which point the setpoint
shall remain at the last command until max cooling PID rises again to 90% or falls
below 50%.
6) When OA ventilation causes SA to fall below cooling setpoint the heating setpoint shall
be cooling setpoint minus 5°.
7) During morning warmup SA heating setpoint shall be 1200
.
8) The cooling PID value from the zones shall only be requested every 3 minutes to
minimize narrow range hunting.
b. Unoccupied Mode
1) Cooling and heating operation shall be disabled except when two or more zones are
requesting operation to meet unoccupied conditioning setpoints.
2) When the AHU operation is required by two or more zones to maintain zone cooling
unoccupied setpoint, cooling SA cooling setpoint shall be 550
.
3) When the AHU operation is required by two or more zones to maintain zone night
purge, cooling SA setpoint shall be 500
.
4) When the AHU operation is required by two or more zones to maintain zone heating
unoccupied setpoint, heating SA setpoint shall be 1200
.
c. Morning Warm Up
1) Morning warm up mode shall start when two or more TUs request heating for optimized
start.
2) Morning warm up setpoint shall be 1200
.
3) Morning warm up shall be disabled if any TU requests cooling from the AHU.
4) Morning warm up mode shall end when all zones PIDs drop to zero or occupancy time
is reached by any zone.
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5. Supply Air Static Pressure Setpoint Reset
a. Initial supply air static pressure setpoint shall be 0.5" wc.
b. Maximum pressure setpoint, P -max, shall be determined as follows:
1) Set all VAV boxes to maximum occupied cfm.
2) Starting at 0.5" we static pressure, adjust setpoint up until all boxes can maintain
maximum occupied cfm.
c. When P -max is initially determined the Supply Air flow CFM measured at the SA air flow
station shall be noted and used on the system graphic to calculate % air flow during
system operation.
d. Static pressure setpoint shall be reset between 0.5"wc and P -max using trim and respond
logic:
1) If any 2 VAV boxes are 100% open, increase the static pressure setpoint by 0.05" we
every 5 minutes until only one VAV box is 100% open or until P -Max is met.
2) If there are no VAV boxes reporting 100% open, decrease the pressure setpoint by
0.05" we every 5 minutes until SA static pressure reaches .5"wc. If any box opens to
100% hold the current pressure until a second box opens to 100% or all boxes again
are below 100% open.
6. Supply Air Static Pressure Control
a. Supply air pressure shall be monitored in the SA duct at a location approximately 2/3 of the
length of the longest run.
b. Supply fan VFD (s) shall modulate fan speed to maintain supply static setpoint.
c. Minimum fan speed shall be 20% (12 hz).
7. Building Static Control w/Return Fan and Relief Damper Control
a. The building static pressure differential to OA pressure shall be monitored The OA
reference input opening shall be shielded from the wind.
b. Return Fan VFD shall modulate fan speed to maintain .05" we in the return/relief plenum.
The location of the pressure sensor inlet shall be between the return fan outlet and the
return air dampers.
c. The relief dampers shall modulate to maintain building space static of.03" wc.
d. If both return air and relief dampers are closed the return fan shall be shutdown
8. Cooling Control
a. Economizer and chiller water valve control shall operate in a coordinated fashion from a
single cooling PID to maintain supply air temperature setpoint (see setpoint reset above).
b. When economizer cooling is available the system shall utilize OA cooling to the maximum
extent possible.
9. Cooling Control w/Chilled Water
Page 33
a. Mechanical Cooling shall be enabled when the following conditions exist:
1) Outside air temperature is less than 4°F below supply air cooling setpoint
2) Supply fan is commanded on and fan status is proven.
3) Night Flush is not enabled
b. The Chilled Water Valve shall modulate based on cooling PID control as follows:
1) When economizer is enabled the Chilled water valve shall modulate from 0% to 100%
as cooling PI D rises from 50% to 100%.
2) When economizer is disabled the Chilled water valve shall modulate from 0% to 100%
as cooling PI D rises from 0% to 100%.
c. A cooing request shall be sent to the chilled water system when cooling valve is greater
than 10% open.
10. Economizer Control
a. Economizer operation shall be enabled when OA temperature is more than 4° below return
air temperature.
b. When enabled OA dampers shall modulate from 0% to 100% and RA dampers shall
modulate from 100% to 0% open on rise of cooling PI D from 0 to 50%.
c. When OA temperature is below 550, a temperature sensor in the mixed air plenum shall
limit OA/RA modulation to maintain MA temperature low limit of 550
.
d. Economizer shall be disabled when outside air temperature is within 2°F of return air
temperature.
e. Supply air low limit shall close outside air dampers if SA falls below 42°F.
f. OA dampers shall go to a fully closed and RA shall open to 100%.when:
1) Supply Fan Proof is off
2) Freeze stat trips
3) Supply air temperature falls below 420 for more than 5 minutes.
4) Mixed air temperature falls below 36°F for more than 5 minutes.
g. Outside air dampers shall be closed and RA damper fully open during unoccupied periods
of operation except when the supply fan is enabled to maintain night setback cooling at the
zones, including night purge operation.
11. Minimum Outside Air Damper
a. When the building is occupied a minimum outside air damper shall modulate to maintain
minimum ventilation air, measured by an air flow station in the OA intake.
b. The minimum OA damper shall be fully closed whenever the building is in an unoccupied
mode, except when enabled to maintain unoccupied cooling setpoint or night flush cooling
setpoint. During these unoccupied operations the minimum OA damper will modulate with
the other OA dampers for SA setpoint control.
Page 34
c. Min OA damper shall close if any other low limit or fan failure occurs as described in the
Economizer section above.
12. Heating Control
a. A heating water coil is provided to reheat OA ventilation air during low ambient operation,
and to provide morning warmup assistance for internal VAV boxes without reheat.
b. The Heating water valve shall modulate from 0 to 100% as the heating PID rises from 0 to
100% to maintain discharge air temperature set point.
c. If SA safety low limit is reached or the freeze stat trips the HW valve shall open to a preset
position sufficient to maintain heating water flow in the HW coil. The degree of opening is
to be determined during Functional Testing
d. A heating request shall be sent to the heating water system when heating valve is greater
than 10% open.
13. Safeties
a. Following safety control devices shall be wired into the fan starter coil circuit for shutdown
of Supply and Return Fan/Relief Fan when an alarm condition occurs.
b. These control devices shall include an auxiliary contact to be wired for building automation
input.
c. 1/0 controller shall also open binary relays for redundant termination of fan operation and
shall send an alarm to the webserver.
1) Freeze Stat — Requires manual reset
2) High static pressure at supply fan discharge — Requires manual reset
3) Smoke and/or Fire Alarm — Reset from Fire System Safety
d. The following software safeties shall be available to receive broadcasts from other control
modules on the network.
1) Building Fire Alarm broadcast.
2) High duct static pressure at location of duct static pressure control input.
e. The following safety control routines shall be included in software programs.
1) Supply air low limit alarm shall initiate if SA temperature remains below 420 for more
than 5 minutes.
xvii. SA and RA fans shall shutdown
xviii. Outside air and relief air dampers shall close completely and return air
dampers will full open.
xix. HW valve shall open to a preset position sufficient to maintain Heating
water flow in the HW coil. The degree of opening is to be determined during
Functional Testing.
xx. Requires software reset
2) High duct static alarm shall initiate whenever SA static at static control location
exceeds 25% of setpoint pressure.
Page 35
xxi. SA and RA fans shall shutdown
xxii. Requires software reset
f. A low duct static message shall be sent to the server whenever SA static at static
control location drops below 75% of setpoint pressure.
14. Mail Room Emergency Evacuation Control
a. Mail Room Exhaust Fan
1) A switch shall be located on the wall of the mailroom to initiate emergency mail room
exhaust fan operation.
2) The switch shall be monitored by a dedicated 1/0 controller.
a) When enabled a global point shall be broadcast to the south VAV Air Handling
Unit.
b) On activation the south VAV AHU shall close OA and Exhaust Air Dampers,
open RA dampers and both SA and RA fans will be turned off.
D. Underfloor Pressurization Control (Air Highway Terminals)
1. Variable Air Volume Control
a. VAV terminals shall control air flow from the primary air plenums (air highways) into the
underfloor pressurized plenum to maintain local pressure control.
b. Underfloor pressure control terminal units shall be associated with local zone VAV boxes
for underfloor pressure reset.
c. Initial underfloor pressure setpoint shall be .03" wc.
d. If the maximum cooling PID for associated zones falls below 50% the underfloor pressure
setpoint shall be reset down by .005" we every 5 minutes until setpoint is reset to .01" wc.
e. If any associated zone PID rises above 50% setpoint shall be reset up by .005" we until
setpoint rises to .03" wc.
2. Underfloor Temperature Control
a. When there are no associated zones calling for cooling and any associated zone heating
PID rises to 10% a heating PID will be enabled to temper the underfloor plenum
temperature.
b. Initial setpoint shall be 620 and shall rise from 620 to 700 as maximum heating PID from
associated zones rises from 10% to 90%.
c. A heating water valve shall modulate to maintain underfloor heating setpoint.
E. Heating Water System
1. Heating Water System Operation
a. Heating Water System Enable/Disable
Page 36
1) The heating PID from associated zones and/or Air Handling Units shall be monitored
and the heating water sequence initiated when any associated equipment heatingPID
reaches 10%.
2) Heating water system shall be disabled when OA is above 650
.
b. Heating Water Temperature Reset
1) Heating water setpoint temperature shall be automatically reset based on heating
requests from equipment that direct) use the heating
Y g water from the associated boder
(s). When enabled the initial setpoint shall be 100°
2) When the heating PID loop output from any associated zone reaches 90% the heating setpoint will increase 50 every 5 minutes until heating setpoint reaches
maximum setpoint temperature of 1500, or until the highest heating PID falls to 50%.
3) When the maximum heating PID from associated equipment falls to 50% the heating
water setpoint shall be reset down 50 every 5 minutes until maximum heating PID
stops decreasing at which point the setpoint shall remain at the last command until the
max heating PID either rises again to 90% or falls below 50%.
4) The heating demand shall be requested no less than every 3 minutes
c. Unoccupied Mode
1) Heating water system shall be enabled if any associated heating PID rises above 90%.
2) If heating is requested during unoccupied hours the heating water setpoint shall be
150°.
3) If Heating Water Pumps run for freeze protection with no zone requesting heat, the
HWT setpoint shall be 100°F.
d. Heating water sequence shall end when all associated equipment PIDs fall to 0%
2. Heating Water Pumps (HWP)
a. The lead heating water pump shall start when the Heating Water Sequence is initiated.
b. Heating Water Pump Lead/Standby Operation:
1) The two Heating water pumps shall be redundant and shall operate in a lead/standby
fashion.
2) On failure of the lead pump, the standby pump shall run and the lead pump shall turn
off and alarm shall be sent to the webserver.
3) If on a subsequent call for lead pump operation the lead pump fails again it shall be
locked out and a software reset required before it is allowed to operate again.
4) The designated lead pump shall rotate upon one of the following conditions (user
selectable):
a) Manually through a software switch
b) If pump runtime has exceeded an initial value of 300 hrs
c) Daily
d) Weekly
e) Monthly
Page 37
3. Heating Water Pump Speed
a. Heating water loop pressure differential shall be maintained at 30 psi by varying pump
speed using a variable frequency drive.
b. Loop pressure control will use PID logic.
c. On an initial call for pump operation the pump will start at 50% (30 hz) and modulate to
maintain setpoint.
d. Pump speed shall not vary up or down more than 1 % every 4 seconds.
e. When pumps are commanded to switch Lead Pump while pumps are running, the incoming
lead pump shall ramp up while the outgoing pump ramps down to minimize disturbance on
the loop.
4. Boiler Control
a. The Boiler Management System shall be enabled when the Heating Water Sequence is
initiated and status is proven on either HWP.
b. An analog output from the ATC system shall reset the BMS setpoint based on setpoint per
reset schedule (see above).
5. Night Purge
a. Boilers and heating water pumps shall be disabled whenever a Night Purge level 2 or level
3 global broadcast is active.
6. Emergency Shut Down Switches
a. Emergency shutdown switches (if provided) located at each exit of the mechanical room
shall be wired to each boiler's primary control circuit to shut down the boilers when
depressed.
b. DDC system shall pick up a status point from the Emergency shutdown switches and
provide redundant boiler shut down when depressed.
7. Alarms
a. Alarms shall be provided as follows:
1) Boiler alarms as provided though Modbus by the boiler manufacturer:
2) High Heating water supply temperature.
3) Low Heating water supply temperature after system has been running for 30 minutes.
4) Lead Heating Water Pump:
a) Failure: Commanded on, but the status is off.
b) Running in Hand: Commanded off, but the status is on.
c) Runtime Exceeded: Status runtime exceeds a user definable limit.
F. Chilled Water System
1. Chilled water system operation
Page 38
a. Chilled Water System Enable/Disable
1) The cooling PID from associated zones and/or Air Handling Units shall be monitored
and the chilled water sequence initiated when any associated equipment cooling PID
reaches 10%.
2) Chilled water system shall be disabled when OA is below 500
.
b. Chilled Water Temperature Reset
1) Chiller Water temperature setpoint shall be automatically reset based on cooling
requests from equipment that directly use the chilled water from the chilled water
system.
a) Initial setpoint shall be 650
b) When the cooling PID loop output from any associated zone reaches 90% the
chilled water setpoint will decrease 2° every 5 minutes until the chilled water
setpoint reaches minimum setpoint temperature of 500, or until the highest
cooling PID falls to 50%.
c) When the maximum cooling PID from associated equipment falls to 50% the
chilled water setpoint shall be reset up 20 ever 5 minutes until maximum
cooling PID stops decreasing at which point the setpoint shall remain at the
last command until the max cooling PID either rises again to 90% or falls
below 50%.
2) The requesting units cooling demand shall be requested not less than every 3 minutes
c. During unoccupied mode:
1) Chilled water system shall be enabled when any associated equipment cooling PID
exceeds 90%.
2) When enabled in unoccupied mode the chilled water setpoint shall be 50°F.
d. Chilled water sequence shall end when all associated equipment PIDs fall to 0%
2. Chilled Water Pumps (CHWP)
a. The lead chilled water pump shall start when the Chilled Water Sequence is initiated.
b. Chilled Water Pump Lead/Standby Operation:
1) The two chilled water pumps shall be redundant and shall operate in a lead/standby
fashion.
2) On failure of the lead pump, the standby pump shall run and the lead pump shall turn
off and alarm shall be sent to the webserver.
3) If on a subsequent call for lead pump operation the lead pump fails again it shall be
locked out and a software reset required before it is allowed to operate again.
4) The designated lead pump shall rotate upon one of the following conditions (user
selectable):
a) Manually through a software switch
b) If pump runtime has exceeded an initial value of 300 hrs
c) Daily
Page 39
d) Weekly
e) Monthly
3. Chilled Water Pump Speed
a. Chilled water loop pressure differential shall be maintained at 30 psi by varying pump speed
using a variable frequency drive.
b. Loop pressure control will use PID logic.
c. On an initial call for pump operation the pump will start at 50% (30 hz) and modulate to
maintain setpoint.
d. Pump speed shall not vary up or down more than 1 % every 4 seconds.
e. When pumps are commanded to switch Lead Pump while pumps are running, the incoming
lead pump shall ramp up while the outgoing pump ramps down to minimize disturbance on
the loop.
4. Chiller Control
a. The Chiller Management System (CMS) shall be enabled when the Chilled Water
Sequence is initiated and status is proven on either CHWP.
5. Night Purge
6. Chillers and chilled water pumps shall be disabled during Night Purge operation.
7. Alarms
a. Alarms shall be provided as follows:
1) Low chilled water supply temperature.
2) Low chilled water supply temperature after system has been running for 30 minutes.
3) Lead chilled Water Pump
a) Failure: Commanded on, but the status is off.
b) Running in Hand: Commanded off, but the status is on.
c) Runtime Exceeded: Status runtime exceeds a user definable limit.
G. Fan Coils FCU 2 — 5
1. Zone Temperature Monitors
a. Zone sensors shall monitor temperature on zones served by FCU 2 through 5 and display
those temperatures on a graphic screen.
H. Exhaust Fan Contol
1. EF -2 -
a. A binary output on the mechanical room 1/0 controller shall open the intake damper on EF -
2.
Page 40
b. When the damper is 75% open EF 2 shall start.
2. EF -3
a. A binary output on a local zone 1/0 controller shall enable EF -3 during occupied hours.
I. Miscelleanous Monitoring Points
1. Sewage Ejection Pumps
a. High Level Alarm
b. The high sump level alarm on the sewage sumps shall be monitored and an alarm
broadcast to the EMCS server when high sump level is sensed.
2. Emergency Generator
a. Emergency Generator shall be monitored and a notification sent to the EMCS server
whenever the generator is started.
b. Start time and run time duration shall be trended and this trend shall be maintained in the
server database for future reference.
3. Fresh Water Pumps
a. Fresh water pump status shall be monitored and displayed on the system front graphic.
4. Glycol Make Up Tank
a. The level of the glycol make up tank shall be monitored and displayed on the system front
graphic.
J. Alternate 1 - Energy Metering
1. Electrical Metering
a. Current transformers shall be installed at the primary electrical entrance to the facility.
2. The EMCS shall meter and display the following:
a. Instantaneous electrical demand (kW)
b. A rolling average of the previous 15 minute demand level (kW)
c. Energy consumption (kWh) for:
1) The previous 24 hours
2) The previous 30 days
3) The previous 12 months
3. Natural Gas Metering
a. The EMCS shall meter and display the following:
1) Instantaneous gas usage (cu. ft.)
Page 41
2) Energy consumption (cu. ft.) for:
a) The previous 24 hours
b) The previous 30 days
c) The previous 12 months
4. EnergyVu Dashboard
a. An EnergyVu Dashboard shall display the energy meter information noted above on a
graphical Dashboard with separate screens for electrical and natural gas.
b. In addition to current and recent energy information the dashboard shall show comparable
year energy information for a base year. Baseline information p
y at on shall be at the discretion of
the City of Meridian.
c. In addition to energy information the dashboard shall also display weather conditions from
the nearest NOAA Weather Station. Information to be displayed is:
1) Current temperature
2) Weather forecast for the next 5 days, including the current day.
d. The EnergyVu Dashboard screen shall only be accessible using a discreet WebCTRL
login. System access from this login shall be limited to display of the dashboard only.
Y
e. The EnergyVu Dashboard shall have the capabilities of display from the following"
1) Internet/Intranet Login
2) A scrolling display monitor
3) A touchscreen monitor
f. Monitors are not required to be furnished within the scope of this project.
Page 42
Meridian City Hall Direct Digital Controls
sequence of operations
General (Common to All Equipment Sequences)...................................................................................... 44
A. Adjustable Parameters............................................................... .
CB. Power Loss to Control Modules......................................................................................................... 44
. Power Loss to Server........................................................................................................................ 44
D. Trends................................................................................................................................................ 44
E. Schedules....................................................................
F. Unoccupied Operation....................................................................................................................... 45
G. Optimal Start ............................................................................................................................... 45
H. Load to Source Control .......
...................................................................................................................... 45
I. Night Purge (Flush) Operation............................................................................................................ 46
J. Alarming............................................................................................................................................. 46
ZoneSequences........................................................................................................................................ 46
A. General Zone Sequences (Common to All Zone Sequences)........................................................... 46
B. General VAV Terminal Unit Sequence (Common to All VAV Zones) ................................................ 48
C. Underfloor VAV Terminal Units (York Boxes w/Out Fans and HW Coil) ........................................... 48
D. Underfloor Fan Powered Terminal Units (York Boxes w/Fans and HW Coil) .................................. 49
E. VAV Fan Powered Terminal Units (Basement VAV Boxes).............................................................. 49
Variable Air Volume Air Handling Units...................................................................................................... 49
A. Run Conditions.................................................................................................................................. 49
B. Supply Fan Enable............................................................................................................................. 49
C. Return Fan Enable............................................................................................................................. 50
D. Supply Air Temperature Setpoint Reset............................................................................................ 50
E. Supply Air Static Pressure Setpoint Reset......................................................................................... 51
F. Supply Air Static Pressure Control..................................................................................................... 51
G. Building Static Control w/Return Fan and Relief Damper Control ..................................................... 51
H. Cooling Control.................................................................................................................................. 52
I. Cooling Control w/Chilled Water......................................................................................................... 52
J. Economizer Control............................................................................................................................ 52
K. Minimum Outside Air Damper............................................................................................................ 53
L. Heating Control.................................................................................................................................. 53
M. Safeties..................................................................................................................................... 53
A. Variable Air Volume Control
Underfloor Pressurization Control (Air Highway Terminals)............................................................................... 54
............................................................................54
...................................
B. Underfloor Temperature Control........................................................................................................ 55
HeatingWater System................................................................................................................................ 55
A. Heating Water System Operation...................................................................................................... 55
B. Heating Water Pumps (HWP)........................................................................................................... 55
C. Heating Water Pump Speed.............................................................................................................. 56
D. Boiler Control..................................................................................................................................... 56
E. Night Purge........................................................................................................................................ 56
F. Emergency Shut Down Switches....................................................................................................... 56
G. Alarms............................................................................................................................................... 57
ChilledWater System................................................................................................................................. 57
A. Chilled Water System ................................................. ...
.................................................................... 57
B. Chilled Water Pumps (CHWP).......................................................................................................... 58
C. Chilled Water Pump Speed............................................................................................................... 58
D. Chiller Control.................................................................................................................................... 59
E. Night Purge........................................................................................................................................ 59
F. Alarms................................................................................................................................................ 59
Page 43
General (Common to All Equipment Sequences)
A. Adjustable Parameters
1. All numeric values in the Sequence of Operation shall be adjustablearameters that can b
ram changes or re -down p e
modified without pro
9 g loading that would interrupt system operation.
B. Stand Alone Controllers
1. All Input/Output (1/0) control modules shall have sufficient memory to maintain their own
operating programs, schedules and trends without connection to the Local Area Network
(LAN).
C. Power Loss to Control Modules
1. All 1/0 control modules shall be equipped with battery backup and shall retain programming,
including time of day, upon loss of power. On return of power control functions shall return to
normal operation based on scheduling and time of day with no operator interface. System
shall include the capability to set delay on start parameters to start system at random intervals
to prevent demand surges on restart.
D. Power Loss to Server
1. On loss of power to the server only, the Energy Management Control System (EMCS) shall
continue to run as normal.
2. The EMCS human interface software shall be a network service and shall automatically restart
and connect to the system when power is restored.
E. Trends
1. Trending shall be available for all BACnet input/output (1/0) points. System shall be capable of
adding trending for any digital or analog value as well as any logical value in the graphical
program, e.g. PID output trending.
2. Trending shall be setup for all significant 1/0 points. Analog values shall be set to log every 5
minutes and store 288 data points for live retrieval. Binary points shall be set to trend on
Change of Value (COV) and to store 100 COV trend samples live. Sample frequency and
quantity of stored data shall be adjustable within the memory limits of each module.
3. Trends shall be stored in module memory. Extended trending shall be available by archiving
trends in server storage.
F. Schedules
1. Occupancy schedules shall be initiated from the zone level. Air handling units, chillers, boilers,
pumps etc. whose operation is intended to provide air or water flow to zones shall function
based on Run Requests, Cooling Requests or Heating Requests from the zones they serve.
This equipment shall not have separate scheduling capability.
2. System shall be capable of setting individual schedules for all zones in a customer database, or
for a campus, a single building or floor. Additionally system shall be capable of assembling
page 44 of 61
multiple zones for single entry scheduling for specific functions. For example a Council
Meetings Group could be used for single entry scheduling of all zone equipment required for
the City Council Meetings etc. Another example would q
p d be a group of rooms used by a
department that regularly requires scheduling during times when the building would be
otherwise scheduled for unoccupied setback.
3. The system shall be capable of setting specific equipment to ignore schedules for the rest of
the building, e.g. Server Room equipment.
4. System shall be capable of setting schedules for weekly reoccurring occupancy, dated week)
date, date range, wildcard or continuous. y'
5. The system shall be capable of scheduling for multiple years in advance.
6. Timed Local Override (TLO) at the local zone sensor, where required, shall override
unoccupied schedule, placing equipment in occupied operation for the programmed time
period.
G. Unoccupied Operation
1. Whenever system operation is required during unoccupied hours of operation, PID control of
heating or cooling function shall be bypassed and systems shall go to 100% operation until
setpoint is satisfied.
2. Capability shall be in the software to set an On/Off differential greater than occupied differential
to reduce the frequency of unoccupied cycling, e.g. heating might be set to cycle on at 550 and
remain on until 580 is reached.
H. Optimal Start
1. The system shall have optimal start capability so that zone start time will be adjusted based on
indoor and outdoor temperatures so as to achieve occupied temperatures at the scheduled
occupancy time.
2. Optimal start shall be based on zone heat capacitance. The capacitance value shall be
adjustable for each zone in the program.
3. System shall be capable of a learning adaptive feature allowing the zone control to
automatically adjust the capacitance to optimize start times.
4. Both optimal start and learning shall be able to be disabled.
I. Load to Source Control
1. Central air handling equipment serving multiple zones shall operate based on Run Requests
from connected zones.
2. Central systems such as boilers, chillers and pumps shall operate based on Heating, Cooling or
Run Requests from connected air handlers or zones as required.
3. Central systems shall have the capability of resetting Heating Water and Chilled Water
temperature setpoints, resetting Supply Air temperature or pressure setpoints or Ventilation Air
damper position based on the PID output of associated zones.
page 45 of 61
J. Night Purge (Flush) Operation
1. 1/0 control modules programming shall include logic for Night Purge operation designed to re -
cool the facility during warm weather periods. Night Purge g pre-
cool g u ge programming shall consist of a
Global Broadcast to initiate three levels of purge at the zone level. Each zone shall be
programmed to receive Night Purge level broadcasts and initiate logic as described below.
2. Each night the EMCS shall query the nearest National Weather Service webserver to obtain
temperature forecast for the following day to provide Purge logic for initiation of Night e
operation. When forecast high Pur is greater than 80°F Purge L g
g 9 g Level III shall be broadcast to each
zone. If the forecast is between 75°F and 80°F a Level II broadcast shall be sent and when
forecast is between 70°Fand 75°F a Level I broadcast shall be sent.
3. Zones shall have the capability to determine action taken for each level of night purge. This is
described at the zone level.
4. Central systems programmed logic shall include the capability of receiving Night Purge
broadcast to initiate the appropriate response, e.g. Central mechanical cooling equipment such
as Chillers will be disabled during Night Purge operation.
5. System shall include capability of deactivating Night Purge through the EMCS by time of year
(month and day) or manually through DDC.
K. Alarming
1. Programs shall include alarms for conditions as specified. Additionally programs shall include
alarms for all 1/0 points. Only those alarms specified are to be initially enabled.
2. The system shall have the ability for the operator to enable or disable all alarms without
program change or memory download.
3. All alarms shall be set with default messages. The system shall have the ability for the operator
to create custom messages without program change or memory download.
4. All alarms generated shall have the capability of setup for the following actions:
a. Alarm Popup
b. Print
c. Propagate To Server
d. Run External Program
e. Send Alphanumeric Page
f. Send E -Mail
g. Write to File
Zone Sequences
A. General Zone Sequences (Common to All Zone Sequences)
page 46 of 61
1. Run Conditions
a. Zone shall have independent schedule capability. System shall have the abilityto write
scheduling from a global schedule input, from local schedule
p edule or from a group schedule.
b. Outside air temperature shall be available from a global broadcast for local control options.
c. Zone control programs shall include the ability to receive a global broadcast of three
escalating demand levels. The program shall be capable of initiating zone setpoint offset
in response to each demand level. Each zone shall have the ability of enabling demand
response and to be directed to alternate demand broadcast sources.
2. Zone Setpoint Control
a. Standard zone sensors, except those noted below, shall include setpoint adjustment and
timed local override. Setpoint adjustment shall be J
p � by means of an adjustable slide lever
and setback override shall be from a button located on the sensor. Program shall have
the capability of canceling setback override by holding the momentary contact button down
for 3 seconds. Default set point adjustment shall be plus or minus 1 OF and timed override
shall be 30 minutes per pulse with a maximum override of 180 minutes. Adjustment
values and override times shall be individually programmable for each sensor.
b. Zone sensors located in hallways and other common areas shall not include setpoint
adjustment or local override options. Sensors in r p
p estrooms shall have the appearance of a
blank single gang electrical box cover with the thermistor mounted on the back side, inside
the function box.
c. Zones programs shall include the ability to program independent cooling and heating
setpoints. Heating and coolingsetpoint offsets from
p a common setpoint is not acceptable.
d. Zone set point control shall use a modified Zone PID algorithm to provide a smooth
modulated variable for cooling and heating.
e. Zone control shall alarm on high or low zone temperature. Zone temperature alarms shall
be disabled during Optimal Start, during first 30 minutes of scheduled occupancy or during
setback override.
f. Supply air temperature (SAT) shall be monitored for all zones where local equipment has
heating or cooling capability. Terminal Unit zones without heat and that use primary SAT
for cooling or warmup do not require SA sensors.
g. Program shall have the capability of initiating an alarm or message when SAT differential
from space or return air temperature exceeds preset values.
3. Night Purge Mode
a. Night Purge setpoints shall be set by purge level from Global Night Purge Broadcast.
1) Level 1 Night Purge cooling setpoint shall be 69°F.
2) Level 2 Night Purge cooling setpoint shall be 67°F.
page 47 of 61
3) Level 3 Night Purge cooling setpoint shall be 65°F.
b. Night Purge heating setpoint shall be offset down by 5°F until scheduled occupancy. On
initiation of occupancy, heatingsetpoint shall be reset y
p up 1°F every 20 minutes until
occupied heating setpoint is reached. This is to prevent reheating a zone that has just
night purged.
c. Night purge shall begin 5 hours before scheduled occupancy when:
1) A Night Purge Mode broadcast is received.
2) Zone temperature is 1' or more above night purge setpoint.
3) Outside air (OA) temperature is above 450 and more than 50 below zone
temperature.
d. Night Purge Mode shall end one hour prior to scheduled occupancy.
B. General VAV Terminal Unit Sequence (Common to All VAV Zones)
1. Programming for 1/0 control modules on central Air Handling Units (AHU) and associated
Terminal Units (TU) shall include network 1/0 points for communication of AHU and Zone
conditions.
a. The following network points shall be broadcast by each TU to the associated AHU for load
to source optimization.
1) Occupied Run time
2) Unoccupied Run time
3) Zone Heating and Cooling PID Percent
4) Zone Damper Position
5) Night Flush request
6) CO2 level
b. The following network points shall be broadcast by each AHU to associated TUs for load to
source optimization routines.
1) AHU Supply Air Temperature
2) AHU Supply Static Pressure
C. Underfloor VAV Terminal Units (York Boxes w/Out Fans and HW Coil)
1. Cooling Control
page 48 of 61
a. The supply air damper shall modulate, using Analog or Floating Motor (TriState) control, to
maintain cooling setpoint except when the AHU supply air temperature exceeds zone
temperature.
D. Underfloor Fan Powered Terminal Units (York Boxes w/Fans and HW Coil)
1. Cooling Control
a. The supply air damper shall modulate, using Analog or Floating Motor (TriState) control, to
maintain cooling setpoint except when the AHU supply air temperature exceeds zone
temperature.
2. Heating Control w/Heating Water
a. When zone heating PID reaches 10% the underfloor inlet dampers shall close completely
and the supply fan shall start.
b. Heating water valve shall modulate from 0 to 100% as zone heating PID increases from 10
to 100% to maintain heating set point. Heating shall be locked out when outside air
temperature is above 65°F.
E. VAV Fan Powered Terminal Units (Basement VAV Boxes)
1. Cooling Control
a. The supply air damper shall modulate, using Analog or Floating Motor (TriState) control, to
maintain cooling set point except when the AHU supply air temperature exceeds zone
temperature.
2. Heating Control w/Heating Water (Not Included in Underfloor VAV Sequence)
a. When zone heating PID reaches 10% the underfloor inlet dampers shall close completely
and the supply fan shall start.
b. Heating water valve shall modulate from 0 to 100% as zone heating PID increases from 10
to 100% to maintain heating set point. Heating shall be locked out when outside air
temperature is above 65°F.
Variable Air Volume Air Handling Units
A. Run Conditions
1. System shall operate based on requests from zones served by each AHU.
2. Outside air temperature from a LAN broadcast is available for control options.
3. Optimal start shall be based on optimal start requests from associated zones. Optimal stop
shall end AHU operation 5 minutes before the last VAV box goes into setback.
B. Supply Fan Enable
1. The supply fan shall be continuously enabled whenever any zone is operating in an occupied
mode and shall cycle on zone demand for cooling to maintain unoccupied zone setpoints.
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2. If supply air flow from the AHU is required for unoccupied heating at the zones, the fan shall
cycle on demand for zone heating to maintain unoccupied zone heating setpoints.
3. During Night Purge operation fan shall run when requested for Night Purge cooling.
4. Fan motor status shall be monitored. If supply fan has been commanded to run by the DDC
system and the fan status is not indicated, the DDC system shall send an alarm to the operator
workstation.
C. Return Fan Enable
1. Return fan shall run whenever supply fan has proven status.
2. Return fan motor status shall be monitored. If return fan has been commanded to run by the
DDC system and the fan status is not indicated, the DDC system shall send an alarm to the
operator workstation.
D. Supply Air Temperature Setpoint Reset
1. Occupied Mode
a. Reset of SA temperature shall be based on cooling demand from VAV zones. The cooling
PID value from each box shall be broadcast to this AHU controller. The PID value from
the boxes with the highest cooling PIDs shall be used for reset.
b. Initial setpoint for supply air temperature shall be 75°F.
c. When any box has a cooling PID more than 10%, SA temperature shall be reset to 65°F.
d. When cooling PID for two or more zones reach 100%, SAT setpoint shall be reset down
1°F every five minutes to a minimum of 55°F.
e. When cooling PID for all zones drops to zero, cooling demand shall be reset up 1 OF every
five minutes. Five minutes after cooling setpoint reaches 68°F, setpoint will be reset to
75°.
f. When OA ventilation causes SA to fall below cooling setpoint the heating setpoint shall be
cooling setpoint minus 50
.
g. During morning warmup SA heating setpoint shall be 1200
.
h. The cooling PID value from the zones shall only be requested every 3 minutes to minimize
narrow range hunting.
2. Unoccupied Mode
a. Cooling and heating operation shall be disabled except when two or more zones are
requesting operation to meet unoccupied conditioning setpoints.
b. When the AHU operation is required by two or more zones to maintain zone cooling
unoccupied setpoint, cooling SA cooling setpoint shall be 55°.
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c. When the AHU operation is required by two or more zones to maintain zone night purge,
cooling SA setpoint 500
.
d. When the AHU operation is required by two or more zones to maintain zone heating
unoccupied setpoint, heating SA setpoint shall be 1200
.
E. Supply Air Static Pressure Setpoint Reset
1. Initial supply air static pressure setpoint shall be 0.5".
2. Maximum pressure setpoint, P -max, shall be determined as follows:
a. Set all VAV boxes to maximum occupied cfm.
b. Starting at 0.511wc static pressure, adjust setpoint up until all boxes can maintain maximum
occupied cfm.
3. Static pressure setpoint shall be reset between 0.5"wc and P -max using trim and respond logic:
a. If any 2 VAV boxes are 100% open, increase the static pressure setpoint by 0.05" every 5
minutes until only one VAV box is 100% open or until P -Max is met.
b. If there are no VAV boxes reporting 100% open, decrease the pressure setpoint by 0.05"
every 5 minutes until SA static pressure reaches .5"wc. If any box opens to 100% hold the
current pressure until a second box opens to 100% or all boxes again are below 100%
open.
F. Supply Air Static Pressure Control
1. Supply air pressure shall be monitored in the SA duct at a location approximately 2/3 of the
length of the longest run.
2. Supply fan VFD (s) shall modulate fan speed to maintain supply static setpoint.
3. Minimum fan speed shall be 20% (12 hz).
4. Fan status shall be monitored and shall alarm if fan is enabled by the control module and fan
status is not verified.
G. Building Static Control w/Return Fan and Relief Damper Control
1. Return Fan VFD shall modulate fan speed to maintain .05" we in the return/relief plenum. The
location of the pressure sensor inlet shall be between the return fan outlet and the return air
dampers.
2. The relief dampers shall modulate to maintain building space static of.03"wc. The building static
pressure sensor shall be referenced to outside air static pressure. The OA reference input
opening shall be shielded from the wind.
3. If both return air and relief dampers are closed the return fan shall be shutdown.
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H. Cooling Control
1. Economizer and chiller water valve control shall operate in a coordinated fashion from a single
cooling PID to maintain supply air temperature setpoint (see setpoint reset above.
2. When economizer cooling is available the system shall utilize OA cooling to the maximum
extent possible.
I. Cooling Control w/Chilled Water
1. Mechanical Cooling shall be enabled when the following conditions exist:
a. Outside air temperature is more than 2°F above supply air cooling setpoint
b. Supply fan is commanded on and fan status is proven.
c. Night Flush is not enabled
2. The Chilled Water Valve shall modulated based on PID control as follows:
a. When economizer is enabled the Chill water valve shall modulate from 0% to 100% as
cooling PID rises from 50% to 100%.
b. When economizer is disabled the Chill water valve shall modulate from 0% to 100% as
cooling PI D rises from 0% to 100%.
3. A cooing request shall be sent to the chilled water system when cooling valve is greater than
10% open.
J. Economizer Control
1. Economizer operation shall be enabled when OA temperature is more than 40 below return air
temperature.
2. When enabled economizer control shall modulate OA and RA to maintain SA cooling setpoint.
3. OA dampers shall modulate from 0% to 100% and RA dampers shall modulate from 100% to
0% open on rise of cooling PID from 0 to 50%.
4. When OA temperature is below 500, a temperature sensor in the mixed air plenum shall limit
OA/RA modulation to maintain MA temperature low limit of 500
.
5. Economizer shall be disabled when outside air temperature is within 1'F of return air
temperature.
6. Supply air low limit shall close outside air dampers if SA falls below 42°F.
7. Supply Fan Proof is off or freeze protection is active.
8. If mixed air temperature falls below 36°F for more than 5 minutes the OA dampers shall go to a
fully closed and RA shall open to 100%.
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9. Outside air dampers and RA damper shall open to 100% during unoccupied periods of
operation except when the supply fan is enabled to maintain night setback temperatures at the
zones, or for night purge operation.
K. Minimum Outside Air Damper
1. When the building is occupied a minimum outside air damper shall modulate to maintain
minimum ventilation air, measured by an air flow station in the OA intake.
2. The minimum OA damper shall be fully closed whenever the building is in an unoccupied
mode, except when enabled to maintain unoccupied cooling setpoint or night flush cooling
setpoint. During these unoccupied operations the minimum OA damper will modulate with the
other OA dampers for SA setpoint control.
3. If mixed air temperature falls below 50° and the OA dampers are fully closed the min OA
damper shall modulate to maintain MA low limit of 50
4. Min OA damper shall close if any other low limit or fan failure occurs as described in the
Economizer section above.
L. Heating Control
1. A heating water coil is provided to reheat OA ventilation air to SA temperature setpoints when
necessary, and to provide morning warmup assistance for internal VAV boxes without reheat.
2. The Heating water valve shall modulate from 0 to 100% as the heating PID rises from 0 to
100% to maintain discharge air temperature set point.
3. If SA safety low limit is reached or the freeze stat trips the HW valve shall open to a preset
position sufficient to maintain Heating water flow in the HW coil. The degree of opening is to
be determined during Functional Testing
4. A heating request shall be sent to the heating water system when Heating valve is greater than
10% open.
M. Safeties
1. Following safety control devices shall be wired into the fan starter coil circuit for shutdown of
Supply and Return Fan/Relief Fan when an alarm condition occurs. These control devices
shall include an auxiliary contact to be wired for building automation input. DDC controller
shall also open binary relays terminating fan operation and shall send an alarm to the
webserver.
a. Freeze Stat — Requires manual reset
b. High static pressure at supply fan discharge — Requires manual reset
c. Smoke and/or Fire Alarm — Reset from Fire System Safety
2. The following software safeties shall be available to receive broadcasts from other control
modules on the network.
a. Fire Alarm
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b. Building Fire Alarm broadcast.
c. High duct static pressure at location of duct static pressure control input.
3. The following safety control routines shall be included in software programs.
a. Supply air low limit alarm shall initiate if SA temperature remains below 420 for more than 5
minutes.
1) SA and RA fans shall shutdown
2) Outside air and relief air dampers shall close completely and return air dampers
will full open.
3) HW valve shall open to a preset position sufficient to maintain Heating water flow in
the HW coil. The degree of opening is to be determined during Functional
Testing.
4) Requires software reset
b. High duct static alarm shall initiate whenever SA static at static control location exceeds
25% of setpoint pressure.
1) SA and RA fans shall shutdown
2) Requires software reset
c. Low duct static alarm shall initiate whenever SA static at static control location drop below
75% of setpoint pressure.
1) Alarm point only
Underfloor Pressurization Control (Air Highway Terminals)
A. Variable Air Volume Control
1. VAV terminals shall control air flow from the primary air plenums into the underfloor pressurized
plenum to maintain local pressure control.
2. Underfloor pressure control terminal units shall be associated with local zone VAV boxes for
underfloor pressure reset.
3. Initial underfloor pressure setpoint shall be .03" we
4. If the maximum cooling PID for associated zones falls below 50% the underfloor pressure
setpoint shall be reset up by .005" we every 5 minutes until setpoint is reset to .01" wc. If any
associated zone PID rises above 50% setpoint shall be reset up by .05" we until setpoint rises
to .03" wc.
page 54 of 61
B. Underfloor Temperature Control
1. When there are no associated zones calling for cooling and any associated zone heating PID
rises to 10% a heating PID will be enabled to temper the underfloor plenum temperature.
2. Initial setpoint shall be 620 and shall rise from 620 to 700 as maximum heating PID from
associated zones rises from 10% to 90%.
Heating Water System
A. Heating Water System Operation
1. Heating Water System Enable/Disable
a. The heating PID from associated zones and/or Air Handling Units shall be monitored and
the heating water sequence initiated when any associated equipment heating PID reaches
10%.
b. Heating water system shall be disabled when OA is above 650
.
2. Heating Water Temperature Reset
a. Heating water setpoint temperature shall be automatically reset based on heating requests
from equipment that directly use the heating water from the associated boiler (s). Initial
setpoint shall be 1000
b. When the heating PID loop output from any associated zone reaches 90% the heating
water setpoint will increase 50 every 5 minutes until heating setpoint reaches maximum
setpoint temperature of 1500, or until the highest heating PID falls to 50%.
c. When the maximum heating PID from associated equipment falls to 50% the heating water
setpoint shall be reset down 50 ever 5 minutes until maximum heating PID stops
decreasing at which point the setpoint shall remain at the last command until the max
heating PID either rises again to 90% or falls below 50%.
d. The requesting units heating demand shall be requested no less than every 3 minutes
3. Heating water sequence shall end when all associated equipment PIDs fall to 0%
4. Unoccupied Mode
a. If Heating Water Pumps run for freeze protection with no zone requesting heat, the HWT
setpoint shall be 100°F.
B. Heating Water Pumps (HWP)
1. The lead heating water pump shall start when the Heating Water Sequence is initiated.
2. Heating Water Pump Lead/Standby Operation:
a. The two Heating water pumps shall be redundant and shall operate in a lead/standby
fashion.
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b. On failure of the lead pump, the standby pump shall run and the lead pump shall turn off
and alarm shall be sent to the webserver.
c. If on a subsequent call for lead pump operation the lead pump fails again it shall be locked
out and a software reset required before it is allowed to operate again.
d. The designated lead pump shall rotate upon one of the following conditions (user
selectable):
1) Manually through a software switch
2) If pump runtime has exceeded an initial value of 300 hrs
3) Daily
4) Weekly
5) Monthly
C. Heating Water Pump Speed
1. Heating water loop pressure differential shall be maintained at 30 psi by varying pump speed
using a variable frequency drive.
2. Loop pressure control will use PID logic.
3. On an initial call for pump operation the pump will start at 50% (30 hz) and modulate to
maintain setpoint.
4. Pump speed shall not vary up or down more than 1 % every 4 seconds.
5. When pumps are commanded to switch Lead Pump while pumps are running, the incoming
lead pump shall ramp up while the outgoing pump ramps down to minimize disturbance on the
loop.
D. Boiler Control
1. The Boiler Management System shall be enabled when the Heating Water Sequence is
initiated and status is proven on either HWP.
2. An analog output from the ATC system shall reset the BMS setpoint based on setpoint per
reset schedule (see above).
E. Night Purge
1. Boilers and heating water pumps shall be disabled following a morning purge level 2 or 3.
F. Emergency Shut Down Switches
1. Emergency shutdown switches (if provided) located at each exit of the mechanical room shall
be wired to each boiler's primary control circuit to shut down the boilers when depressed.
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2. DDC system shall pick up a status point from the Emergency shutdown switches and provide
redundant boiler shut down when depressed.
G. Alarms
1. Alarms shall be provided as follows:
a. Boiler alarms as provided though Modbus by the boiler manufacturer in addition to:
1) High Heating water supply temperature.
2) Low Heating water supply temperature after system has been running for 30
minutes.
b. Heating Water Pump 1
1) Failure: Commanded on, but the status is off.
2) Running in Hand: Commanded off, but the status is on.
3) Runtime Exceeded: Status runtime exceeds a user definable limit.
c. Heating Water Pump 2
1) Failure: Commanded on, but the status is off.
2) Running in Hand: Commanded off, but the status is on.
3) Runtime Exceeded: Status runtime exceeds a user definable limit.
Chilled Water System
A. Chilled Water System
1. Chilled Water System Enable/Disable
a. The cooling PID from associated zones and/or Air Handling Units shall be monitored and
the chilled water sequence initiated when any associated equipment Chilled PID reaches
10%.
b. Chilled water system shall be disabled when OA is below 50°.
2. Chilled Water Temperature Reset
a. Chilled water setpoint temperature shall be automatically reset based on cooling requests
from equipment that directly use the chilled water from the chilled water system. Initial
setpoint shall be 650
b. When the cooling PID loop output from any associated zone reaches 90% the chilled water
setpoint will decrease 2° every 5 minutes until the chilled water setpoint reaches minimum
setpoint temperature of 50°, or until the highest cooling PID falls to 50%.
page 57 of 61
c. When the maximum cooling PID from associated equipment falls to 50% the chilled water
setpoint shall be reset up 20 ever 5 minutes until maximum cooling PID stops decreasing
at which point the setpoint shall remain at the last command until the max cooling PID
either rises again to 90% or falls below 50%.
d. The requesting units cooling demand shall be requested no less than every 3 minutes
3. Chilled water sequence shall end when all associated equipment PIDs fall to 0%
4. Unoccupied Mode
a. The chilled water pumps shall be enabled when the zone cooling PID for any zone rises to
90%.
b. When enabled in unoccupied mode the chilled water setpoint shall be 50°F.
B. Chilled Water Pumps (CHWP)
1. The lead chilled water pump shall start when the Chilled Water Sequence is initiated.
2. Chilled Water Pump Lead/Standby Operation:
a. The two chilled water pumps shall be redundant and shall operate in a lead/standby
fashion.
b. On failure of the lead pump, the standby pump shall run and the lead pump shall turn off
and alarm shall be sent to the webserver.
c. If on a subsequent call for lead pump operation the lead pump fails again it shall be locked
out and a software reset required before it is allowed to operate again.
d. The designated lead pump shall rotate upon one of the following conditions (user
selectable):
1) Manually through a software switch
2) If pump runtime has exceeded an initial value of 300 hrs
3) Daily
4) Weekly
5) Monthly
C. Chilled Water Pump Speed
1. Chilled water loop pressure differential shall be maintained at 30 psi by varying pump speed
using a variable frequency drive.
2. Loop pressure control will use PID logic.
page 58 of 61
3. On an initial call for pump operation the pump will start at 50% (30 hz) and modulate to
maintain setpoint.
4. Pump speed shall not vary up or down more than 1 % every 4 seconds.
5. When pumps are commanded to switch Lead Pump while pumps are running, the incoming
lead pump shall ramp up while the outgoing pump ramps down to minimize disturbance on the
loop.
D. Chiller Control
1. The Chiller Management System shall be enabled when the Chilled Water Sequence is initiated
and status is proven on either CHWP.
2. An analog output from the ATC system shall reset the BMS setpoint based on setpoint per
reset schedule (see above).
E. Night Purge
1. Chillers and chilled water pumps shall be disabled during Night Purge operation.
F. Alarms
1. Alarms shall be provided as follows:
a. Low chilled water supply temperature.
b. Low chilled water supply temperature after system has been running for 30 minutes.
c. Chilled Water Pump 1
1) Failure: Commanded on, but the status is off.
2) Running in Hand: Commanded off, but the status is on.
3) Runtime Exceeded: Status runtime exceeds a user definable limit.
d. Chilled Water Pump 2
1) Failure: Commanded on, but the status is off.
2) Running in Hand: Commanded off, but the status is on.
3) Runtime Exceeded: Status runtime exceeds a user definable limit.
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Clima-Tech Remote Access to WebCTRL
Objectives
• Remote access using two factor authentication to the WebCTRL web interface using http and the
City's SSL VPN.
• Accessible from any secure internet connection, including the City's public wireless at City Hall.
(Computers infected with malicious software may be blocked)
• Clima-Tech will be able to use this remote access method for the initial configuration and for
remote support/maintenance over the life of the contract.
Out of Scope
• Remote access to the WebCTRL server via RDP or any other protocols.
• Remote access to the WebCTRL databases.
• Remote access to any other City systems or infrastructure maintained by IT.
• Access to log into City computers with the user accounts provided.
Methods and Tools Used
• Two factor authentication with user account/password combination and an RSA SecurelD token
(fob).
• RSA SecurelD token (software or hardware) will provided by the City. Public Works will cover the
cost of the RSA SecurelD token.
• The City's SSL VPN will be utilized to provide a secure and encrypted medium for this access.
• The City will provide user accounts and passwords to Clima-Tech to access the SSL VPN.
Caveats
• The CIO or IT director must approve this solution before IT can move forward. They must also
approve moving forward with software tokens in place of hardware tokens.
o Dave will discuss this with Terry on or before 8/3/11.
o If Terry is not available by the end of the day on 8/3/11, Dave will proceed with getting
approval through Bill Nary.
• Access to the WebCTRL system over the SSL VPN needs to be tested. (IT will collaborate with
Eric to do this testing once the remote access method has been configured.)
• Configuration and testing will not take place until the proposed solution has been approved.
• If software tokens are not available due to the approval process, costs, or other issues, hardware
tokens will be utilized.
Notes
• RSA does not support the two factor authentication on tomcat. This leaves us with the SSL VPN
as the only option to provide two factor authentication to the system.
There is little to no risk to other City systems/infrastructure using this method.
• There is minimal risk to the WebCTRL system using this method. (Password + RSA token would
need to be compromised)
FYI - Overview of Logon Process
• Open web browser and navigate to the City's SSL VPN web site
• Enter username and password
• Enter RSA token pin
• New web browser window opens, directed to the WebCTRL logon screen
The SSL VPN window must remain open to use the WebCTRL system
page 60 of 61
Exhibit B
MILESTONE / PAYMENT SCHEDULE
A. Total and complete compensation for this Agreement shall not exceed $479,441.00
to furnish and install an Automated Logic Corporation Automatic Temperature Control
System per the attached DDC System Specifications (Exhibit A). Total amount includes
Payment and Performance Bonds in the amount of 100% of Contract Total.
TASK DESCRIPTION DATE AMOUNT
Supply and Installation of Automated Logic Corporation
Direct Digital Control System per Exhibit A
A. Initialization &Materials Delivered and Stored $215,241.00
B. Software Engineering $6,600.00
C. Installation $248,100.00
D. Download &Commissioning $4,700.00
E. Project Closeout and O&M Manuals $4,800.00
TOTAL $479,441.00
Travel expenses, if any listed above, will be paid at no more than the City of
Meridian's Travel and Expense Reimbursement Policy.
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