Washington-Saratoga-Warren-Hamilton-Essex Counties BOCES Building C Reconstruction Phase 2
SED Control No. 64-90-00-00-0-054-005 BCA Project No. 2019-532
Addendum No. 1 October 27, 2020 To: All Bidders
This addendum is hereby made part of the Contract Documents as though it were originally included therein. It modifies the following documents:
Original Drawings and Project Manual dated 10/05/2020.
All Bidders must acknowledge receipt of this Addendum in the space provided on the Form of Proposal.
PROJECT MANUAL:
1. ADD specification section 28 8238 Electric Unit Heaters.
2. Reference Specification Section 22 11 16 – PIPING SYSTEMS AND ACCESSORIES:
A. Paragraph 2.10.b Above grade Drainage and Vent Piping
i. Material option. ADD “ 2. Polyvinyl Chloride (PVC) Schedule 40 ASTM D 2665, ASTM F894, ASTM F1488. Solid core piping only. Solvent cement joints and or mechanical fasteners.”
B. Paragraph 2.10.c Below grade Drainage and Vent Piping
i. Material option. ADD “ 2. Polyvinyl Chloride (PVC) Schedule 40 ASTM D 2665, ASTM F894, ASTM F1488. Solid core piping only. Solvent cement joints and or mechanical fasteners.”
3. Reference Specification Section 23 0993 DDC Temperature Controls:
A. DELETE in its entirety. SUBSTITUTE the attached revised specification section 23 0993 DDC Temperature Controls.
4. Reference Specification Section 23 8126 Ductless Split System Cooling:
A. DELETE in its entirety. SUBSTITUTE the attached revised specification section 23 8126 Ductless Split System Cooling.
CONTRACT DRAWINGS:
5. Reference Sheet No. A-001 – DOOR SCHEDULE AND DETAILS:
A. Detail D1/A-001 Window Jamb Detail, ADD the following note:
“Provide one-way visible SOLYX SX-SG09 Silver Gray film to glazing on window type W2. Verify film
install side with owner.”
6. Reference Sheet No. A-002 – ROOM FINISH SCHEDULE AND DETAILS:
A. ADD the attached sketch SK1.1 SLAB CUT DETAIL.
i. Slab cut and removal of concrete slab by GC ii. Excavation by PC
iii. Backfill and compaction by PC iv. Vapor barrier by GC
v. Concrete slab infill and rebar by GC
7. Reference Sheet No. A-101 – RECONSTRUCTION PLANS – AREA A BASE BID:
A. Plan A-2/A-101 BASEBID – REMOVALS AREA A, ADD trenching shown on sketch SK 1.3.
B. Plan A-4/A-101 BASEBID – NEW WORK AREA A, ADD manufacturer and model information to FREESTANDING WIRE MESH SHELVING note shown on sketch SK 1.2:
8. Reference Sheet No. A-103 – RECONSTRUCTION PLANS – AREA C ALTERNATE 2:
A. DELETE in its entirety. SUBSTITUTE the attached revised Sheet No. A-103 – Reconstruction plans – Area C Alternate 2
9. Reference Sheet No. M-002 – SCHEDULES:
A. DELETE in its entirety. SUBSTITUTE the attached revised Sheet No. M-102 – Schedules.
10. Reference Sheet No. M-103 – MECHANICAL RECONSTRUCTION PLANS – ALTERNATE 2:
A. DELETE in its entirety. SUBSTITUTE the attached revised Sheet No. M-103 – Mechanical Reconstruction Plans – Alternate 2.
11. Reference Sheet No. M-601 – MECHANICAL DETAILS AND CONTROLS:
A. DELETE in its entirety. SUBSTITUTE the attached revised Sheet No. M-601 – Mechanical Details and Controls.
12. Reference Sheet No. P-001 – SYMBOLS, ABBREVIATIONS AND NOTES:
A. ADD the attached sketch SK 1.1 SLAB CUT DETAIL.
i. Slab cut and removal of concrete slab by GC ii. Excavation by PC
iii. Backfill and compaction by PC iv. Vapor barrier by GC
v. Concrete slab infill and rebar by GC
13. Reference Sheet No. P-102 – PLUMBING RECONSTRUCTION PLANS – ALTERNATE 2:
A. DELETE in its entirety. SUBSTITUTE the attached revised Sheet No. P-102 – Plumbing Reconstruction Plans – Alternate 2.
14. Reference Sheet No. E-002 – ELECTRICAL SCHEDULES:
A. DELETE in its entirety. SUBSTITUTE the attached revised Sheet No. E-002 – Electrical Schedules.
15. Reference Sheet No. E-201 – ELECTRICAL RECONSTRUCTION PLANS – AREA A BASE BID:
A. DELETE in its entirety. SUBSTITUTE the attached revised Sheet No. E-201 – Electrical Reconstruction
16. Reference Sheet No. E-203 – ELECTRICAL RECONSTRUCTION PLANS – AREA C - ALTERNATE 2:
A. DELETE in its entirety. SUBSTITUTE the attached revised Sheet No. E-203 – Electrical Reconstruction Plans – Area C - Alternate 2.
END OF ADDENDUM
Respectfully Submitted,
BCA ARCHITECTS & ENGINEERS
Karl P. Griffith, A.I.A Principal / Architect
Digitally signed by Karl P. Griffith DN: C=US,
[email protected], O=BCA Architects & Engineers, CN=Karl P. Griffith Reason: I am the author of this document
Date: 2020.10.27 13:38:00-04'00'
SECTION 23 82 38 ELECTRIC UNIT HEATERS PART 1 GENERAL
1.1 RELATED DOCUMENTS
a. Drawings and general provisions of the Contract including the General and Supplementary Conditions and Division 1 Specification Sections, apply to the work of this section.
1.2 SUBMITTALS
a. Manufacturer's data on equipment items listed.
b. Submit operating, installation and maintenance instructions.
c. Submittals shall be marked to identify specified information.
PART 2 PRODUCTS 2.1 GENERAL
a. Free from expansion and contraction noises and strains. Fan speed on schedule is an indication of sound rating and shall not be exceeded. All exposed parts to be cleaned and bonderized or phosphate coated before prime coating or baked enameling. Baked enamel finish for unit heaters. Rating in accordance with standard test codes adopted jointly by IUGA and ASHRAE. Required capacities are shown in Schedule and Plans.
b. Provide unit heater suitable for use with hot water in accordance with schedule and/or as shown on plans.
c. Casings constructed of heavy gauge steel.
d. Provide with adjustable discharge louvers.
e. Motor efficiency shall comply with EISA standards.
2.2 HEATING COIL
a. Electric-Resistance Heating Coil: Nickel-chromium heating wire, free from expansion noise and 60-Hz hum, embedded in magnesium oxide refractory and sealed in corrosion-resistant metallic sheath. Terminate elements in stainless-steel, machine-staked terminals secured with stainless-steel hardware, and limit controls for high-temperature protection.[ Provide integral circuit breaker for overcurrent protection.]
2.3 FAN AND MOTOR
a. Motor designed for continuous operation. Lubrication to be sealed in, permanent type.
Provide approved vibration isolators.
PART 3 EXECUTION 3.1 GENERAL
a. Provide all secondary steel, hangers, vibration isolators, required for proper vibration and noise free operation.
b. Install all equipment in strict accordance with manufacturer's instructions.
END OF SECTION 23 82 38
SECTION 23 09 93
DDC TEMPERATURE CONTROLS RENOVATIONS PART 1 GENERAL
1.1 RELATED DOCUMENTS
a. Drawings and General Provisions of the Contract including the General and Supplementary Conditions and Division 1 Specification Sections, apply to the work of this section.
1.2 STATE CONTRACT
a. All controls will be by Technical Building Services (TBS) under state contract.
b. This section applies to the portion of TBS’s equipment and controls that will be supplied for this project via TBS’s NYS OGS contract.
c. Equipment will be shipped FOB factory and will be unloaded, inspected, stored, and installed by the Mechanical Contractor.
d. The pre-purchased Schneider Electric equipment and Schneider Electric controls shall include start-up services, temperature controls, control engineering, controls installation and wiring, operating manuals, training and warranty for parts on equipment and controls. See other specification sections for additional requirements. All other warranty services are by the installing contractor.
1.3 SUBMITTALS
a. See other temperature control specification sections for additional submittal requirements.
b. Individual Schedules: Wiring, conduit, pneumatic tubing, control valves, dampers. Note:
schedule of valves and dampers shall be submitted independently of other submittals; do not combine with other submittals.
c. Temperature control diagrams including interconnecting piping and wiring diagrams.
d. Descriptive data and ratings for all equipment and materials.
e. Temperature control panel layouts and cover layouts.
f. Complete schedule of I/O points for each controller. Indicate all spare I/O points for each controller related available.
g. Shop Drawings, Product Data, and Samples
1. The control contractor shall submit a list of all shop drawings with submittals dates within 30 days of contract award.
2. Submittals shall be in defined packages. Each package shall be complete and shall only reference itself and previously submitted packages. The packages shall be as approved by the Architect and Engineer for contract compliance.
3. Equipment and systems requiring approval of local authorities must comply with such regulations and be approved. Filing shall be at the expense of the control Contractor where filing is necessary. Provide a copy of all related correspondence and permits to the Owner.
4. Prepare an index of all submittals and shop drawings for the installation. Index shall include a shop drawing identification number, contract documents reference and item description.
5. The control contractor shall correct any errors or omissions noted in the first review.
6. At a minimum, submit the following:
a. Network architecture diagrams including all nodes and interconnections.
b. Systems schematics, sequences and flow diagrams.
c. Points schedule for each point in the BMS, including: point type, object name, expanded id, display units, controller type, and address.
d. Samples of graphic display screen types and associated menus.
e. Detailed bill of material list for each system or application, identifying quantities, part numbers, descriptions, and optional features.
f. Control damper schedule including a separate line for each damper provided under this section and a column for each of the damper attributes, including:
code number, fail position, damper type, damper operator, duct size, damper size, mounting, and actuator type.
g. Control valve schedules including a separate line for each valve provided under this section and a column for each of the valve attributes: code number, configuration, fail position, pipe size, valve size, body configuration, close off pressure, capacity, valve cv, design pressure, and actuator type.
h. Room schedule including a separate line for each VAV box and/or terminal unit indicating location and address
i. Details of all interfaces and connections to the work of other trades.
j. Product data sheets or marked catalog pages including part number, photo and description for all products including software.
h. Record Documentation: Operation and Maintenance Manuals
1. (3) copies of the operation and maintenance manuals shall be provided to the owner's representative upon completion of the project. The entire operation and maintenance manual shall be furnished on compact disc media, and include the following for the provided:
a. Table of contents.
b. As-built system record drawings. Computer aided drawings (CAD) record drawings shall represent the as-built condition of the system and incorporate all information supplied with the approved submittal.
c. Manufacturer's product data sheets or catalog pages for all products including software.
d. System operator’s manuals.
e. Archive copy of all site-specific databases and sequences.
f. Network diagrams.
g. Interfaces to all third-party products and work by other trades.
2. The operation and maintenance manual CD shall be self-contained, and include all necessary software required to access the product data sheets. A logically organized table of contents shall provide dynamic links to view and print all product data sheets.
Viewer software shall provide the ability to display, zoom, and search all documents.
3. For projects containing multiple buildings, manuals shall be submitted separately for each building.
1.4 SPECIAL CONDITIONS
a. The temperature control subcontractor shall fulfill the following special conditions:
b. Have established local office and service department within 60 miles radius of this project, which has been in continuous operation for the past (5) years.
c. Bids by wholesalers, contractors, franchised dealers, or any firm whose principle business is not that of installing automatic temperature control systems shall not be acceptable.
d. The system shall be installed by competent mechanics, regularly employed by the manufacturer of the temperature control equipment.
e. Single source responsibility of supplier shall be the complete installation and proper operation of the control system.
1.5 GENERAL REQUIREMENTS
a. Provide new temperature control systems, consisting of electric and direct digital with associated software and hardware as described herein and on drawings.
b. Provide all support services necessary to place into operation, and make fully operational, all control equipment. Start up services shall include tuning, adjustment, and time necessary to DEBUG all control equipment.
c. Furnish and install all devices including miscellaneous devices for proper operation of
building HVAC systems. Contractor must provide all components whether shown on contract documents or not, as necessary to comply with the sequence of operations, control diagrams, I/O summary and as shown on plans, for all equipment.
d. This contractor is responsible for providing all low voltage and line voltage control wiring and all devices required for proper system operation. Power wiring will be installed by Electrical Contractor. This Contractor shall coordinate with EC where control wiring is required to interface with power wiring.
e. All electrical work by this Contractor shall be in accordance with provisions in Section 230995 and with applicable Division 26 specifications.
f. New DDC temperature control components shall be fully compatible with existing system.
g. Some HVAC equipment is supplied with manufacturer's integral controls. Contractor shall provide all low and line voltage wiring, and miscellaneous equipment necessary to interface with and for proper operation of manufacturer's control systems. Contractor shall coordinate with unit manufacturer for installation requirements, and shall assist unit manufacturer for start-up of this equipment.
h. All thermostats or sensors located in public areas, such as gymnasium, cafeteria, auditorium, locker rooms, corridors, pools, etc., will have cast aluminum guards as approved by
Engineer. Button or concealed plate type sensor where specified are exempt from this requirement.
i. Contractor will provide all web based access including user name and pass word for view only to engineer. Contractor will also provide all levels of access required for Owners use to operate his station. The contractor will obtain permission for this access from the owner's I/T representative.
j. Contractor shall provide all software, I/O points and components, whether shown on contract documents or not, as necessary to comply with the sequence of operation, all control
diagrams, I/O summary, and as shown on plans, for all equipment.
k. Minimum outdoor air damper CFM requirements for unit ventilators and air handling units can be found in Specification Section 238223 and 237313.
1.6 CONNECTION TO EXISTING EQUIPMENT
a. All new control equipment must integrate seamlessly with existing Schneider Electric/TBS DDC system. All new digital controllers are required to communicate fully with the existing temperature control network.
b. All new controllers provided under this project must be connected to the existing host computer. Extend network (including software) as required to provide a fully integrated control system.
c. Contractor shall modify programming in host computer to accept all new equipment and I/O points.
1.7 EXAMINATION OF EXISTING EQUIPMENT
a. Contractor must visit site to inspect existing DDC equipment to construct all necessary interface with this system.
1.8 INSTRUCTIONS AND SERVICES
a. Provide competent personnel for necessary time to remain at job site for the purpose of instructing the Owner's personnel in proper operation and maintenance of the installations made by the contractor. Unless noted otherwise, training sessions shall consist of a minimum of (2) 4 hour periods each. Instructions presented shall cover all aspects of operation and maintenance of new equipment. Provide 7 day advance notice to Architect and Engineer prior to instruction sessions.
b. Terminal Interface (Desk Mounted & Handheld): Provide one(1) instruction period of 4 hours in duration. Instruction shall include; program operation, setpoint adjustment, alarm reporting and printing, time scheduling, etc.
c. Local Controllers: For each type of controller, provide one(1) instruction period of 2 hours in duration. Instruction shall include program(s) operation, setpoint adjustments, output, manual override, etc.
d. Provide service of all types for the guarantee period for all equipment and control components furnished and installed by the Contractor.
e. Prepare and present to the Architect, four bound copies of temperature control diagrams, temperature control component listing and sequence of operation of the temperature control systems. Include maintenance procedures to be followed by the Owner's personnel for the proper care and maintenance of the systems. Furnish one copy of each temperature control diagram in laminated plastic or framed under glass for installation in the building. This copy shall be fade resistant (No DIAZO type prints).
1.9 SOFTWARE ROUTINES
a. The controls contractor shall provide and load all program code necessary to operate control systems in accordance with the specification. All application packages shall be developed in accordance with the Owners Requirements, and the specification.
b. At the end of the warranty period, the Contractor shall prepare copies of all control software on non-volatile magnetic media. One copy, complete with full re-loading instructions shall be provided to the Owner.
c. Built-in software sub-routines (i.e. - optimum start/stop, duty cycle, electrical demand limiting, deadband etc.) shall not restrict introduction of fresh air during the occupied cycle for any air handling unit system.
d. The following software routines shall be furnished as part of the controls installation:
1. Equipment Operation: Provide all software necessary to operate all equipment in accordance with I/O summary and sequence of operation listings.
2. Timed Program: Initiate program action (i.e. start/stop; day/night signals, etc. for system operation during holidays, weekdays, and time of day.
a. Provide a randomizing factor to prevent simultaneous starting of equipment.
Stagger start-up for morning warm-up and initiation of day cycle for building zones.
e. Duty Cycle: Duty cycle shutdown of systems with outside air ventilation is not permitted.
f. Electrical Demand Limiting: When demand meter input required, BMS should function to maintain electrical demand below as specified point. Cycle loads as required to shed electrical demand above setpoint. Shedding of HVAC loads shall be limited by specified building comfort conditions. Shedding loads with outside air ventilation is not permitted.
g. Monitor Points: BMS shall monitor all input points from schedule, all values of status and analog inputs shall be available to operator's terminal. All points shall be identified by English names (i.e., "Room 100 Temp.").
h. Logging: Contractor shall provide software to log all input point status, analog values, and alarms. BMS shall store values and at operators option will report all stored values to host at regular intervals. Frequency of reporting to host should not be less than approximately 4 hours.
i. Alarms: Alarms shall be reported immediately to the host computer and to the operators terminal. Configure system to accept and print real time alarm reports. See "Schedule of Alarms" for minimum alarm condition reports.
1. Alarm functions, parameters, and format, shall be configured by this Contractor as required by the Owner.
j. Parameters: All setpoints, out of limit alarm levels, etc. shall be software parameter values which may be changed at the operators terminal or by instructions from (future) host computer.
k. Custom Routines: Contractor shall provide custom routines as requested by Owner.
Contractor shall meet with the Owner or his representative to coordinate setup of custom software requirements. Custom requirements on alarms and trends are required to be completed by the Contractor as a part of the Base Bid.
1.10 TIME OF DAY SCHEDULING
a. Individual time schedules shall be provided for all areas and as listed below. Time schedules for each area shall operate independently and shall be configured to meet the requirements of the Owner. The start time of each area shall be configured with optimum start times software functions, stop times shall follow a simple off time schedule.
Areas Approx. Occupied Time
1. Office Areas 06:30 - 17:00
2. Classroom 07:00 - 15:00
3. Library 07:00 - 15:00
4. Toilet Room Exhaust Fans 06:00 - 20:00
5. Gymnasium 09:00 - 15:00
6. Auditorium 09:00 - 15:00
7. Kitchen 06:00 - 15:00
8. Open Area 07:00 - 17:00
b. Note: General equipment associated with a particular area shall follow the area start/stop time schedule (i.e. - classroom general exhaust fans shall stop @ 15:00).
1.11 SCHEDULE OF ALARMS
a. Provide software alarm points as listed below and as required by the Owner. Contractor shall meet with the Owner to include additional alarm point annunciation as requested by the Owner.
Point Alarm Function
1. Hardware Communication Failure Hardware Failure 2. Space Temperature Out of Limits (± 5° from setpoint)
3. Duct Air Temperature Out of Limits (± 10° from setpoint) 4. Water Flow Switch Loss of Flow
5. Air Flow Switch Loss of Flow
6. Water Temperature Out of Limits (± 10° from setpoint) 7. Freeze Stat Report Freeze Condition
8. Current Flow Switch Loss of Current (Fan/Pump) 1.12 COMMISSIONING
a. Acceptance Check Sheet:
1. Prepare a check sheet that includes all points for all functions of each system as indicated on the point list included in this specification.
2. Submit the check sheet to the engineer for approval.
3. Engineer will use the check sheet as the basis for acceptance with the BMS contractor.
b. This contractor is to perform complete commissioning reports for this project. Prior to final payment, contractor must submit signed commissioning checklist, approved by both the owner and engineer. The contractor must also prepare commissioning reports for each piece of equipment and room served. See below for sample checklist and report info required.
c. Following submission of checklist and reports, the contractor must promptly rectify all listed deficiencies and submit to the engineer that this has been done.
d. Reports Required Information:
1. Required for each Air Handling Unit/HRU:
a. Address Code: ____________
b. Room Area: _____________
c. Voltage Reading: ____________
d. Damper Actuator Model: ___________________
1. Linkage Inspected: ______________________
2. Damper Opened & Closed from BMS: ________
e. Heating Valve Operated from BMS: _______
f. Cooling Valve/DX Operated from BMS: _______
g. Fan Operation:
1. Started from BMS: _______
2. Stopped from BMS: _______
h. Discharge Air Sensor Temperature Set at _______ °F i. Room Sensor Setpoint at _______ °F
j. Override Button on Sensor Index (Night) and Unit Operated: _______
k. Return Air Sensor Checked _________
2. Required for all individual rooms:
a. Address Code/Controller: ____________
b. Room #: _____________
c. Type of Control:
1. Vent Fan/Relief Damper: _______
d. Fan Relay Operation from BMS:
1. On: _______
2. Off: _______
e. Room Sensor Setpoint Check _______ °F
Date:
SAMPLE COMMISSIONING CHECKLIST
System:
1) Does the sequence of operations match in the field to the specifications?
2) Does the damper and valve operation match graphics?
3) Does graphics match what is in field, i.e. 3-way vs. 2-way valves, etc.
4) All valves and dampers properly shown?
5) Are all alarms, etc. mapped correctly, can they be reset or turned off remotely?
6) Do room/OA/RA/discharge temperatures on computer match actual temperatures?
7) Are all units mapped and responding to DDC?
8) Does calculated discharge temperature match actual supply?
9) Are all room numbers and names correct in the system?
10) Are all setpoints readily accessible to the owner, and adjustable?
End of Checklist
Owner Scott Swenson, PE, LEED AP
1.13 TESTS AND START-UP
a. Furnish labor, tools, and equipment and thoroughly adjust all temperature control
components furnished and installed by the contractor. Furnish labor and return to the job site as weather conditions permit to provide final adjustment of temperature controls during the heating and cooling season.
1.14 SYSTEM ACCEPTANCE
a. Upon project completion, the control contractor shall issue a written report written on their company letterhead stating that the system is complete, fully operational, has been adjusted, all hardware and software functions verified, and is operating in accordance with the intent of the specifications.
b. Any deviation from specified settings or operations necessitated during system start up shall be specifically noted.
c. When contractors' completion statement is received, an acceptance test shall be performed in the presence of the Architect, Engineer and Owner's representative.
d. Acceptance testing shall include demonstrating typical control functions on selected equipment and as requested by Architect and Engineer. Demonstration for designated equipment shall exhibit proper sequence of control. Contractor shall simulate all control functions in order to verify sequence of operation.
e. When system performance is deemed satisfactory, the system will be accepted for use and placed under warranty.
PART 2 PRODUCTS
2.1 GENERAL DESCRIPTION
a. The Building Management System (BMS) - EXISTING: shall use an open architecture and fully support a multi-vendor environment. To accomplish this effectively, the BMS shall support open communication protocol standards and integrate a wide variety of third-party devices and applications. The system shall be designed for use on the Internet, or intranets using off the shelf, industry standard technology compatible with other owner provided networks.
b. The Building Management System shall consist of the following:
1. Standalone Network Automation Engine(s) 2. Field Equipment Controller(s)
3. Input/Output Module(s) 4. Local Display Device(s)
5. Portable Operator's Terminal(s) 6. Distributed User Interface(s)
7. Network processing, data storage and communications equipment 8. Other components required for a complete and working BMS
c. The system shall be modular in nature, and shall permit expansion of both capacity and functionality through the addition of sensors, actuators, controllers and operator devices, while re-using existing controls equipment.
d. System architectural design shall eliminate dependence upon any single device for alarm reporting and control execution.
1. The failure of any single component or network connection shall not interrupt the execution of control strategies at other operational devices.
2. The System shall maintain all settings and overrides through a system reboot.
e. System architectural design shall eliminate dependence upon any single device for alarm reporting and control execution.
f. The System shall comply with (UL) 864 (UUKL) Ninth Edition Smoke Control Listing including the UL 864 Ninth Edition Standard for Control Units and Accessories for Fire Alarm Systems.
1. The System shall comply with the following NFPA Codes and Standards as applicable:
a. NFPA 70 National Electrical Code b. NFPA 72 National Fire Alarm Code c. NFPA 101 Life Safety Code
d. NFPA 90A Standard for the Installation of Air-Conditioning and Ventilation Systems
e. NFPA 92B Guide for Smoke Management Systems in Malls, Atria, and Large Areas
2. The System shall comply with the following International Code Council (ICC) Codes:
a. Building Officials and code Administrators International (BOMA) model code b. International Conference of Building Officials (ICBO) model code
c. Southern Building Code Congress International (SBCCI) regulations g. Acceptable Manufacturers
1. The owner has standardized on Schneider Electric/Technical Building Services as its preferred temperature control manufacturer.
2.2 FIRST TIER NETWORK
a. Automation Network
1. The automation network shall be based on a PC industry standard of Ethernet TCP/IP. Where used, LAN controller cards shall be standard “off the shelf” products available through normal PC vendor channels.
2. The BMS shall network multiple user interface clients, automation engines, system controllers and application-specific controllers. Provide application and data server(s) as required for systems operation.
3. All BMS devices on the automation network shall be capable of operating at a communication speed of 100 Mbps, with full peer-to-peer network communication.
4. The automation network will be compatible with other enterprise-wide networks.
Where indicated, the automation network shall be connected to the enterprise network and share resources with it by way of standard networking devices and practices.
b. Control Network
1. Network Automation Controllers shall provide supervisory control over the control network and shall support all three (3) of the following communication protocols:
a. BACnet Standard MS/TP Bus Protocol ASHRAE SSPC-135, Clause 9 (1) The NAE shall be BACnet Testing Labs (BTL) certified and carry the
BTL Label.
(2) The controller shall be tested and certified as a BACnet Building Controller (B-BC).
b. LonWorks enabled devices using the Free Topology Transceiver (FTT-10a).
2. Control networks shall provide either “Peer-to-Peer,” Master-Slave, or Supervised Token Passing communications, and shall operate at a minimum communication speed of 9600 baud.
3. DDC Controllers shall reside on the control network.
4. Control network communication protocol shall be BACnet Standard MS/TP Bus Protocol ASHRAE SSPC-135.
5. A BACnet Protocol Implementation Conformance Statement (PICS) shall be provided for each controller device (master or slave) that will communicate on the BACnet MS/TP Bus.
6. The PICS shall be submitted 10 days prior to bidding.
c. Integration
1. Hardwired
a. Analog and digital signal values shall be passed from one system to another via hardwired connections.
b. There will be one separate physical point on each system for each point to be integrated between the systems.
2. Direct Protocol (Integrator Panel)
a. The BMS system shall include appropriate hardware equipment and software to allow bi-directional data communications between the BMS system and 3rd party manufacturers’ control panels. The BMS shall receive, react to, and return information from multiple building systems, including but not limited to the chillers, boilers, variable frequency drives, power monitoring system, and medical gas.
b. All data required by the application shall be mapped into the Automation Engine’s database and shall be transparent to the operator.
c. Point inputs and outputs from the third-party controllers shall have real-time interoperability with BMS software features such as: Control Software, Energy Management, Custom Process Programming, Alarm Management, Historical Data and Trend Analysis, Totalization, and Local Area Network Communications.
3. BACnet Protocol Integration - BACnet
a. The neutral protocol used between systems will be BACnet over Ethernet and comply with the ASHRAE BACnet standard 135-2003.
b. A complete Protocol Implementation Conformance Statement (PICS) shall be provided for all BACnet system devices.
c. The ability to command, share point object data, change of state (COS) data and schedules between the host and BACnet systems shall be provided.
d. Color Graphics (Extensions)
1. The graphics application program shall be supplied as an integral part of the User Interface. Browser or Workstation applications that rely only upon HTML pages shall not be acceptable.
2. The graphics applications shall include a create/edit function and a runtime function.
The system architecture shall support an unlimited number of graphics documents (graphic definition files) to be generated and executed.
e. The graphics shall be able to display and provide animation based on real-time data that is acquired, derived, or entered.
1. Graphics runtime functions – A maximum of 16 graphic applications shall be able to execute at any one time on a user interface or workstation with 4 visible to the user.
Each graphic application shall be capable of the following functions:
a. All graphics shall be fully scalable
b. The graphics shall support a maintained aspect ratio.
c. Multiple fonts shall be supported.
d. Unique background shall be assignable on a per graphic basis.
e. The color of all animations and values on displays shall indicate if the status of the object attribute.
2. Operation from graphics – It shall be possible to change values (setpoints) and states in system-controlled equipment by using drop-down windows accessible via the pointing device
3. Graphic editing tool – A graphic editing tool shall be provided that allows for the creation and editing of graphic files. The graphic editor shall be capable of performing/defining all animations and defining all runtime binding.
a. The graphic editing tool shall in general provide for the creation and positioning of point objects by dragging from tool bars or drop-downs and positioning where required.
b. In addition, the graphic editing tool shall be able to add additional content to any graphic by importing backgrounds in the SVG, BMP or JPG file formats.
4. Aliasing – Many graphic displays representing part of a building and various building components are exact duplicates, with the exception that the various variables are bound to different field values. Consequently, it shall be possible to bind the value of a graphic display to aliases, as opposed to the physical field tags.
f. Hardware Requirements: Furnish equipment as manufactured by Siemens, Honeywell, Johnson Controls, Schneider Electric I/A Series, Siebe, or an approved equal. Note: Unused points shown in I/O summary shall be configured as spare points. Equipment substitutions shall include quantity of panels to provide quantity of available points as shown on I/O summary, or as required by Engineer.
g. I/O points listed shall be individually configured and SHALL NOT be combined with other points without specific Engineer's written approval.
h. Substituted equipment shall also include all auxiliary components necessary to match capabilities of specified equipment.
i. (PXC) Network Automation Engine: Network automation engine is a web-enabled network controller.
1. Communication using IT standards 2. Web browser based user interface
3. User interface and online system configuration software embedded in NAE
4. Supervision of field controller networks, LonWorks network, BACnet enabled devices.
j. Integrator Panel: Interface panel to connect to open protocol devices by third party manufacturers. Translate control and monitor third party devices seamlessly through DDC network system. Furnish all hardware necessary to interface with other devices outside of temperature controls network (including all host computer work station software).
k. Fire Alarm: Provide interface card to allow communications between temperature control network and fire alarm system. Coordinate exact requirements with Electrical Contractor.
Provide all hardware and software necessary for full seamless interface.
l. (ACP) Series PXC Air Handler Control Panel Controller: Bacnet MS/TP communication stand alone controller for use with air handling equipment. Furnish with input/output module (IOM), transducers and isolation relays, and line voltage relay kit where system requires.
1. 6 Analog Inputs (Universal) 2. 2 Digital Inputs
3. 4 Analog Outputs (Configurable) 4. 3 Digital Outputs
5. Relay Output 120/240 VAC 6. Plenum Rated Housing 7. 2 Analog Outputs
m. (UCP) Series PTEC Unitary Control Panel Controller: Bacnet MS/TP communication stand alone controller for use with unitary equipment (unit vents, etc.) Furnish all transducers and isolation relays, and input/output module (IOM) where system requires.
1. 6 Analog Inputs (Universal) 2. 2 Digital Inputs
3. 4 Analog Outputs (Configurable) 4. 3 Digital Outputs
5. Relay output 120/240 VAC 6. Plenum Rated Housing 7. 2 Analog Outputs
n. (IOM) Input/output Module: Bacnet MS/TP communication with universal and configurable inputs and outputs increase controller application flexibility.
1. Ability to reside on the FC Bus or SA Bus. Provides additional application flexibility 2. Plenum Rated Housing
o. (LCP) Central Plant Controller DX-9100: (1) line digital local status display with front panel, push buttons to set display characteristics. Furnish with transformer kit, function module kit, and line voltage relay kit. (Johnson Controls)
1. 8 Analog Inputs 2. 8 Digital Inputs 3. 8 Analog Outputs 4. 6 Digital Outputs
5. 8K RAM
6. 32K EPROM
2.3 DDC ACCESSORY COMPONENTS
a. Descriptions: Unless noted otherwise, components listed shall be Johnson Controls; or equal.
b. AF-1: Cleveland Controls AFS-22 air flow switch (SPDT) 300VA pilot duty.
c. AFS-1: Model Air Monitor VOLU-flow/OAM II, Outdoor airflow Measuring System, including multifunction transmitter with differential pressure transducers and airflow sensor for measuring outdoor airflow rate in VAV system.
d. B-1: Model 32R04, 4" bell low voltage 78db at 10 ft., 24 VAC. Grainger; or approved equal.
e. CFS-1: Model Hawkeye 700, 800, 900, current flow switch for fan motor operation on/off status, amp range .5 to 200 amp. Adjustable setpoint.
f. CR-1: Control relay coil voltage as required. Plug in relay type with octal base screw terminals. Provide SPDT contacts rated at 10 Amps. Potter & Brumfield; or approved equal.
g. DPS-1: Model Dwyer #1823, differential pressure filter alarm, .07 - 5.0" w.c. ranges, 15 Amp contact rating, 120 - 480 volts S.P.D.T. snap-type control. For use with above switch, filter kit with mounting kit #A-602.
h. DPT-1: Model PR-282, pressure differential transducer, accuracy 1%, linearity 0.1%, repeatability 0.1%, stainless steel, max. static pressure 300 psig, maximum differential pressure 200 psig, enclosure 16 gauge steel, ports 1/8" NPT output clipping
20.3mA/5.1VDC/10.2VDC, maximum supply voltage 24VAC/28VDC non regulated, output averaging.
i. DPT-1A: Series 629, wet/wet differential pressure transmitter, type 316 stainless steel, accuracy 0.5%, 0-200 temperature range, pressure limits per system. Power
requirements 13-35 VDC, output signal 4-20mA, response time 50 msec, enclosure rating NEMA 4X (IP66) with 3-way valve package. Dwyer; or approved equal.
j. EPE-1: Model EP-8000-2, electric pneumatic transducer, proportional action to regulate pneumatic pressure output in response to an 0-10V input signal.
k. EPE-2: electric pneumatic solenoid 3 way air valve, provide low voltage coil to match DDC output signal.
l. FS: Series F-61KB-11 paddle flow switch, SPDT NEMA 1 enclosure. 150 psig brass with stainless steel paddle 120V contacts (1 HP).
m. HSP: Model HE-6310, humidity sensor duct mounted.
n. HSR: Model HT-205W, sensor, 0-100% RH 2% RH, power requirements 24VAC/2.5VA, output 4-20 MA. Polycarbonate material, NEMA 4 rating. General Eastern; or approved equal.
o. HSTS: Model HE-6310, humidity and temperature sensor wall mount.
p. ITS/ITS-1: Model TE-6000, immersion temperature sensor, furnish with brass thermowell.
Well insertion length to center of pipe. Glycol systems require stainless steel well.
q. SPS-1: Setra series 264 differential pressure transmitter up to 2.5" WC, 4-20mA signal with 9-30VDC power supply.
r. MDS-2: Model C-1000, motion detector, for occupancy sensor. Ultra- sonic type omni directional transmitter, dual receivers, sensitivity gain control, 1000 sq. ft. coverage, 24 Volt DC, Universal Energy Control Inc.; or approved equal.
s. OAE, OAS, RAE: Model HT205, sensors, humidity 0-100% RH, temperature sensors 0- 200F, 24VAC/2.5VA accuracy 1F and 2% RH. Power requirements output signal 4- 20mA, 0.5 Volts, polycarbonate material, NEMA 4 rating. General Eastern; or approved equal.
t. PB-1: Model XALK174, emergency start button, mushroom head, SPDT, flush mounting, stainless steel plate, contact block with red nameplate, white lettering for "Emergency Purge Fan Start", Type Square D; or approved equal.
u. SPNL-1: Model T40-005, DD transmitter high limit range to suit application 4-20mA output, 24 VAC power required. Modus; or approved equal.
v. SPS-1:
1. Model 264, pressure transmitter 4-20mA, 0-5VDC, 2.5VDC bidirectional output, 24VDC power by this Contractor, range 0-1.0" wg. or as applicable to individual systems needs. Setra; or approved equal.
2. Model 160, stainless steel pitot tube sized to duct width with all necessary duct accessories for above. Dwyer; or approved equal.
3. Model PST24-150, 24VDC power supply for above.
w. TSB: Model 500, button type room sensor, silicon type, with flush stainless steel switchplate housing assembled as a single unit. Sensor to be tip sensitive only.
x. TSD: Model 500, network temperature sensor, duct mounted, electronic sensing, B bulb type 8" insertion, unless otherwise directed by Engineer.
y. TSDA: Model 500, 17 ft. averaging mounted in air stream, temperature sensing element (1000 ohm, 1%) with handi-box, duct mounted.
z. TSR: Model 2200/2280, Network Space sensor, wall mounted with cover, electronic temperature or carbon dioxide sensing elements. Furnish unit with setpoint adjustment, Day/Night override pushbutton and communication jack connected to DDC unit.
aa. VMA: Model ATEC, for VAV's: Stand alone and network direct digital controller with a pressure sensor and an actuator housed in a pre-wired unit. Reheat and fan powered options. 4-A1, 3-B1, 2-AO, 2-BO points. Continuous loop tuning for automated
commissioning. Damper actuator fast response stepper motor 90/30 second travel for quick damper position.
2.4 SCHEDULE OF TEMPERATURE CONTROL COMPONENTS
a. General: Temperature control contractor shall never provide a control valve that is less than half the size of the supply line serving that system; i.e. unit ventilators, AHUs, RTUs, boiler room systems, etc.
b. CVF: Model JM-2000, control valve, 2-way NO, slim line electronic actuator, forged brass body screwed ends, stainless steel trim, rubber EPT plug, flat disc, voltage as required. Size 1/2", 3/4", 1" as required. 32-200F, 300 psig static pressure, 20-30VAC, 0-10VDC
proportional.
c. CVM: Model VG-2000, globe valve flangen, 2-1/2" to 6", 2-way and 3-way, cast iron body, MWP 250 psi, M/MWT 25F - 250F, stem material stainless steel, valve plug brass, EPT seal, packing EPT rings, packing stem lift, 3/4" – 1-1/2" maximum diff 35 psi flow modified linear 2-way, linear 3-way. Hot water, chilled water, glycol and steam service.
d. CVT: Model VG-1000, Johnson Controls forged brass ball valve, 1/2" to 2", 2-way and 3-way valves, characterized flow control disc, PTFE graphite reinforced seats, equal percentage flow characteristics, rated for water, 50% glycol solutions or 15 psi steam. 23F - 250F temperatures, 580 psi static, 200 psi close off rating. 50 psi maximum differential pressure.
e. CVT, CVM, CVZM, CVZS: Model VG-2000, Johnson Controls 2-1/2" to 6", 2-way and 3-way valves, cast iron flanged globe valves, 316 stainless steel trim, ANSI B16.15 Class 125, valves NO/NC and 3-way. Modified linear flow characteristics, packing EPT ring packs, plug is brass. Hot water, chilled water and steam service.
f. D-1: Model CD-1300, control damper, sized as indicated on drawings, opposed blade, low leakage with blade and edge seals, self-lubricating bearings, external motor mounting.
Furnish all required linkages and hardware.
g. D-2: Model CD-1300, same as D-1 except parallel blade.
h. EP-1: Model V-2410, electric/Pneumatic solenoid air valve, 3 way. Coil voltage to match control signal.
i. ES-1: end switch for proof of damper position to DDC system. See ME-1 and ME-2 below.
j. FS-1: Model P74EA-8, flow proving switch, general purpose heavy duty, differential pressure type, adjustable DP range 2 to 30 psi, SPDT snap switch 16A at 120V, brass bellows.
k. LC-1: Model A70HA-1, low temperature cut out, manual reset, fast response, 20' lg. capillary tube set at 35°F, DPDT switch.
1. Low limit controllers (freezestats) shall be hard wired to break supply fan circuits.
Auxiliary signals (where indicated) shall provide secondary alarm indication to digital controls.
l. LTCO: Model A19ANC-1, low temperature cut out controller, rainproof enclosure, SPDT switch at -150°F range. Lock out condenser units below 50°F; Locate in all condenser units.
m. ME-1: Models LF24-SR, -S; NF24-SR, -S, AF24-SR, -S TF24-SR-S, damper/valve actuator, electronic type, proportional with spring return, furnish with bracket and linkages. End switches as required. Belimo; or equal.
n. ME-2: Models NF24, NF120, TF24-S, same as ME-1, except for 2 position.
o. ME-3: Model LF24-SR, -S, TF24-SR-S, electronic damper/valve actuator for unit ventilators.
End switches as required. Belimo; or equal.
p. TCP: Model M-8100, temperature control cabinet, size as required. Locate as shown on drawings. Furnish with engraved laminated plastic nameplates for all devices as required.
Johnson Controls.
q. THL-1: Model T-26T-3, thermostat line voltage, SPDT snap switch heavy duty 16 FLA contacts. Heavy duty, with concealed adjustment knob. Furnish with Model #GRD10A-608 plastic guard. Face plate kit #PLT213-6 vertical mounting, no thermometer.
r. XT-1: Model TZ-5000-10, control transformer 120 volt to 24 volt, 100 VA. Johnson Controls.
2.5 WIRE AND CABLE
a. All conductors shall be copper. Conductor types and sizes shall be as specified unless noted otherwise.
b. Low Voltage Control Wiring: 18 AWG, stranded (16x30) copper, multi conductor cable. PVC insulation, PVC jacket, 300V, 60°C. Number of conductors as required. Minimum 4
conductors cable. Furnish Belden style #8489 (4 cond.); or equal.
c. Line Voltage Control Wiring:
1. For control relays or other low amperage circuits #14 AWG THHN.
2. For direct line voltage control of equipment minimum conductor size #12 AWG THHN.
d. Electronic Sensor Wiring: 18 AWG, stranded (16x30) copper conductors, twisted pair, 100%
overall aluminum polyester shield, 20 AWG CU drain wire. Polyethylene insulation, PVC jacket, 300V, 60°C. Furnish Belden style #8760; or equal.
e. Computer Communications Cable: 18 AWG, stranded (16x30) copper conductors, (2) twisted pair, 100% individual aluminum polyester shields each shield with 20 AWG CU drain wire. PVC insulated, PVC jacket, 300V. Furnish Belden style #9368; or equal.
1. Note: Actual # of conductors may be increased as required for actual communication requirement.
2. Provide minimum (1) spare shielded twisted pair conductors in each communications wiring run. Wiring runs between operator work stations (if any) provide (2) spare shielded twisted pair conductors.
2.6 POLYETHYLENE TUBING
a. Flame retardant pneumatic control tubing, size as required. Tubing shall meet NFPA 90A requirements for plenum spaces.
1. Tubing shall be non combustible and shall not exceed smoke developed index of 50.
b. Tubing must meet the following (UL Standard UL1820):
2. Maximum Average Optical Density 0.15 3. Maximum Flame Spread Rating 5 ft.
c. Schedule of Air Tubing:
1. Accessible Ceilings, Control Panels: Fire retardant polyethylene tubing supported every 8'-0". In ceiling spaces tubing shall not lie on ceiling tiles.
2. Non-Accessible Ceilings, Non-Accessible Locations, Block Walls, Mech. Rooms:
a. Hard drawn copper tubing solder connections socket fittings. Support tubing every 6'-0".
b. Fire retardant polyethylene tubing in EMT conduit furnish adequate number of accessible junction boxes to facilitate installation of tubing. Note: for exposed locations in mechanical rooms wire way may be substituted for EMT.
3. Underground Concrete Slabs: Fire retardant polyethylene tubing in galvanized rigid steel conduit with threaded fittings. In slabs pull tubing into conduit after concrete is poured.
4. Pipe Tunnels: Fire retardant polyethylene tubing in EMT conduit. Provide adequate number of accessible junction boxes to facilitate installation of tubing (minimum spacing 100').
PART 3 EXECUTION 3.1 GENERAL
a. All electrical work required by this section shall be installed in compliance with Specification Section 230995 - Control Wiring and applicable sections of Division 26.
b. Provide all field testing, calibrations, and adjustments, of complete control systems, and equipment interfaces where applicable, necessary to place into operation.
c. Install thermostats 48" above finished floor. Locate in accordance with floor plans, if not indicated on plan located per generally accepted standards.
d. Fully commission all aspects of the building management system work.
e. Acceptance Check Sheet;
1. Prepare a check sheet that includes all points for all functions of the controls as indicated on the point list.
2. Submit the check sheet to the engineer for approval.
3. The engineer will use the check sheet as the basis for acceptance with the control contractor.
f. Promptly rectify all listed deficiencies and submit to the engineer that this has been done.
3.2 CONDUIT ROUTING AND TERMINATION
a. Conduits shall be installed so as to be concealed in all finished spaces at the conclusion of the project unless otherwise noted. Conduits may be exposed in mechanical and electrical rooms and unfinished storage, maintenance and production areas
b. Where it is impractical to conceal wiring or conduit in finished construction, cables shall be run in wiremold.
c. Make neat runs parallel or perpendicular to structural elements (walls, ceilings, floors) of building with minimum number of couplings and bends. Install so that required conductors may be drawn without injury or excessive strain.
d. Provide double locknuts and insulation bushings on the end of each conduit entering an enclosure. If smaller holes are used in knockouts provide listed devices which overlap largest knockouts as required to strengthen the termination.
e. Cap or plug open ends of conduits during construction.
f. Conduits shall be continuous from equipment controls to cabinets, junction or pull boxes and shall enter and be secured to all boxes in such a manner that each system shall be
electrically continuous.
g. Change in Direction of Conduit:
1. Concealed locations - use standard radius bend.
2. Exposed locations or concealed locations where conduit will be accessible; use standard radius bends or conduit body.
h. Install conduits to allow proper drainage. Do not form pockets.
i. Securely attach all conduits to building structure utilizing approved methods and fastening devices for support.
j. Clear obstructions in raceways or replace raceways at no additional contract cost.
Demonstrate to Architect that spare conduits are free of obstruction at substantial completion and leave a drag line (1/8" polypropylene monofilament utility rope) for future use.
3.3 WIRING INSTALLATION
a. BMS Wiring:
1. All conduit, wiring, accessories and wiring connections required for the installation of the Building Management System, shall be provided by the Contractor unless specifically shown on the Electrical Drawings. All wiring shall comply with the requirements of applicable portions of Division 26 and all local and national electric codes, unless specified otherwise in this section.
2. All BMS wiring materials and install methods shall comply with BMS manufacturer's recommendations.
3. The sizing, type and provision of cable, conduit, cable trays and raceways shall be the design responsibility of this Contractor. If complications arise, however, due to the incorrect selection of cable, cable trays, raceways and/or conduit by the
Contractor, the Contractor shall be responsible for all costs incurred in replacing the selected components.
b. Class 2 Wiring:
1. All Class 2 (24VAC or less) wiring shall be install in conduit unless otherwise specified.
2. Conduit is not required for Class 2 wiring in concealed accessible locations. Class 2 wiring not installed in conduit shall be supported every 5' from the building structure utilizing metal hangers designed for this application. Wiring shall be installed parallel to the building structural lines. All wiring shall be installed in accordance with local code requirements.
3. All wiring in plenum spaces shall be enclosed in conduit. Plenum rated cable can be used in accessible ceilings.
4. Class 2 signal wiring and 24VAC power can be run in the same conduit. Power wiring 120VAC and greater cannot share the same conduit with class 2 signal wiring.
5. Perform circuit tests using qualified personnel only. Provide necessary instruments and equipment to demonstrate the following:
a. All circuits are continuous and free from short circuits and grounds.
b. All circuits are free from unspecified grounds; that resistance to ground of all circuits in no less than 50 megaohms.
c. All circuits are free from induced voltages.
6. Provide complete testing for all cables used under this Contract. Provide all equipment, tools and personnel as necessary to conduct these tests.
7. Provide for complete grounding of all signal and communications cables, panels and equipment so as to ensure system integrity of operation. Ground cabling and conduit at the panel terminations. Avoid grounding loops.
8. Open wiring shall not be permitted in mechanical spaces; all wiring in mechanical spaces shall be in conduit.
9. Wire runs (esp. electronic sensor wiring) shall be continuous. Splicing cable shall be allowed only where specifically noted. All splicing shall only be done in accessible boxes.
10. Wiring within control cabinets, pull boxes, etc. shall be neatly bundled together.
Wiring shall be clearly labeled with panduit type wire markers at each end.
c. BMS Line Voltage Power Source:
1. 120VAC circuits used for the Building Management System shall be taken from temperature control junction boxes (TC/JB) furnished by electrical contractor, refer to electrical contract drawings for locations. TC contractor is responsible for all wiring from this junction box.
2. Panelboard circuits used for the BMS shall be dedicated to the BMS and shall not be used for any other purposes.
d. BMS Raceway:
1. All wiring shall be installed in conduit or raceway except as noted elsewhere in this specification. Minimum control wiring conduit size 3/4".
2. Where it is not possible to conceal raceways in finished locations, surface raceway (wiremold) may be used as approved by the Engineer.
3. All conduits and raceways shall be installed level, plumb, at right angles to the building lines and shall follow the contours of the surface to which they are attached.
4. Flexible metal conduit shall be used for vibration isolation and shall be limited to 3' in length when terminating to vibrating equipment. Flexible metal conduit may be used within partition walls. Flexible metal conduit shall be UL listed.
e. Penetrations:
1. Provide fire stopping for all penetrations used by dedicated BMS conduits and raceways. All other project fire stopping to be by other trade.
2. All openings in the fire proofed or fire stopped components shall be closed by using approved fire resistive sealant.
3. All wiring passing through penetrations, including walls, shall be in conduit or enclosed raceway.
4. Penetrations of floor slabs shall be by core drilling. All penetrations shall be plumb, true and square.
5. No penetrations in structural elements shall be made before receipt of written approval from Engineer and/or Architect.
3.4 TUBING INSTALLATION
a. All pneumatic temperature control tubing shall be installed concealed wherever possible within finished areas.
b. Tubing installed above accessible ceilings shall be directly supported by joists or other structural members. Tubing shall not be draped across accessible ceilings or supported by ceiling support wire.
c. After installation of pneumatic piping pressure test all tubing at min. 25 psi for 24 hours. If more than 5 psi drop occurs correct leaks then re-test.
d. Final connections to actuators shall be made with 18" length flexible tubing.
e. Number, color code, or otherwise label tubing for future identification and servicing.
3.5 POINTS LISTS
a. Refer to drawings for a list of points.
3.6 SEQUENCE OF OPERATION
a. Unit Shut Down
1. All units connected to FACP shall be shut down in the event of fire. (By EC via fire alarm system).
2. All units with low limit controllers (freezestats) shall be shut down if supply air temperature drops below 35°F. Shut down includes closing OA dampers, shut down fan, open control valve (or face damper).
3. All low limit controls shall be hard wired to break fan controls. Wiring low limit
through DDC is not permitted to break fan controls. Wiring from LC-1 to DDC system is for alarm purposes only.
4. When low limit control is activated, send auxiliary alarm signal to DDC unit controller.
DDC system shall annunciate alarm condition.
5. All temperature control valves and dampers will be spring return and shall fail to the
"Safe" position for that system.
b. Occupied/Unoccupied Cycle:
1. Each system with DDC controls shall function as an individual D/N zone with individual event times for S/S.
2. Stagger initial start times to prevent simultaneous occupied cycle activation for all equipment.
3. In unoccupied cycle, when room sensor override button is pushed, start software timer (setpoint 2 hours) to provide Day (occupied) cycle for a software selectable period of time after which system reverts to Night (unoccupied) cycle.
4. While software timer is operating ignore additional override switch signals. System shall ignore switch signals initiated when area is in occupied cycle.
c. Morning Warm-Up: Provide software routine to initiate morning warm-up when outdoor conditions dictate, warm-up schedule shall be adaptive (i.e. optimize energy usage). During morning warm-up for classrooms and shop areas with motion detector, the detector is overridden until room occupied temperature setpoint is reached, duration (2) hours (adjustable).
END OF SECTION 23 09 93
SECTION 23 81 26
DUCTLESS SPLIT SYSTEM COOLING EQUIPMENT PART 1 GENERAL
1.1 RELATED DOCUMENTS
a. Drawings and General Provisions of the Contract, including General and Supplementary Conditions and Division 1 Specification Sections, apply to work of this section.
1.2 SUBMITTALS
a. Submit performance data on all equipment in this section, shop drawings, description of all accessories, installation, operating and maintenance manuals.
b. Submittals shall be marked to identify specified information.
1.3 SYSTEM DESCRIPTION
a. The variable capacity, heat pump air conditioning system shall be a heat pump system with dehumidifying capability. The system shall consist of a wall mounted evaporator model matched to outdoor direct expansion (DX), air-cooled, inverter driven compressor using R- 410A refrigerant. The system shall include dehumidification control.
PART 2 PRODUCTS
2.1 SYSTEM PERFORMANCE
a. The system performance shall be in accordance with ARI 210/240 test conditions.
b. The system cooling performance shall include dehumidification RH control settings for High (60%), Standard (55%), Low (50%) and Continuous.
c. The operating range in cooling will be 14°F DB ~ 109°F DB.
d. The operating range in heating will be -4°F DB ~ 75°F DB.
e. The system shall be capable of maximum refrigerant piping of 33 feet, with 26 feet maximum vertical difference, without any oil traps or additional components.
2.2 FAN COIL UNIT
a. Fan coil to include microprocessor controls, wired remote, anti frost control, adjustable air louvers, 3 speed fan motor, cleanable filters, internal condensate pump and low ambient temperature controls.
b. Fan:
1. The evaporator fan shall be an assembly consisting of a direct-driven fan by a single motor.
2. The fan shall be statically and dynamically balanced and operate on a motor with permanent lubricated bearings.
3. The fan blades shall include “saw edge” indentations to reduce operation sound and increase the airflow rate.
4. An auto-swing louver for adjustable air flow (both vertically and horizontally) is standard via the wireless remote control furnished with each system.
5. The indoor fan shall offer a choice of five speeds, plus quiet and auto settings.
c. Coil:
1. The evaporator coil shall be a nonferrous, aluminum fin on copper tube heat exchanger.
2. The coil shall include a split heat exchanger for dehumidification with “re-warming”
control.
3. All tube joints shall be brazed with silver alloy or phoscopper.
4. All coils will be factory pressure tested.
5. A condensate pan shall be provided under the coil with a drain connection. The drain pan shall include an antibacterial and antivirus agent designed to prevent mold proliferation.
d. Control:
1. The unit shall have a wireless remote infra-red controller capable to operate the system. It shall have Cooling Operation, Heating Operation, Automatic Operation, Dry Cooling Operation, Dry Operation and Air Cleaning Operation.
2. The controller shall consist of an On/Off Power switch, COOL, HEAT, AUTO, DRY, DRY COOLING & CLEAN mode selectors, Fan Setting, Swing Louver, On/Off Timer Setting, Temperature Adjustment, °C or °F Temperature Display, Humidity
Adjustment, Flash Streamer Air Cleaning, Comfort Airflow, Comfort Sleep, Cooling Breeze, Child Lock, Information and Powerful Operation.
2.3 CONDENSER
a. Contractor shall furnish a flexible connector at each refrigerant piping connection to
condenser. Furnish bronze tube, bronze braid with solder type connections as manufactured by Flexonics Inc.; or equal.
b. Unit shall be constructed of heavy gauge galvanized steel and painted with a weather resistant powder paint.
c. Refrigerant coils shall include condenser fan and compressor contactor with high and low pressure controls and factory installed line dryer.
d. Compressor shall have internal over temperature and pressure protection.
e. Outdoor unit to have external service valves and vibration isolators.
2.4 HORIZONTAL MOUNTED UNIT ACCESSORIES
a. Furnish unit with a high flow rate, pan type condensate removal pump, designed to fit next to cabinet. Unit shall be die-cast aluminum motor housing, check valve, epoxy finish, nylon volute and impeller, ABS plastic float, epoxy coated metal switch mechanism and all brass parts. Pump to provide 0.87 gph @ 26 feet hd. Furnish unit with control float, filter screen, 120V/1Ph. Furnish Aspen mini lime pump Model #ASP-ML230, as manufactured by Little Giant Pump Co.; or an approved equal. Furnish with pvc cover.
PART 3 EXECUTION 3.1 GENERAL
a. Locate condenser to allow sufficient space for air flow and servicing space requirements.
b. Install unit in strict accordance with manufacturer's instructions.
c. After installation is complete, and just prior to completion of project, Contractor shall clean condenser coils, by an approved method, to remove dirt and debris which may have accumulated during construction.
d. Provide (2) equipment supports, Greenheck Model GESR; or equal, below each condensing unit on roof. Equipment support shall be constructed of 18 gauge welded galvanized steel, with base closure, wood nailer and flashing cap. Provide roof protector pad below entire support area.
END OF SECTION 23 81 26
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BCA Architects & Engineers
KEY PLAN: N.T.S.
Ithaca | Saratoga | Watertown
WWW.THEBCGROUP.COM
DRAWN BY PROJECT NUMBER
REV
CHECKED BY
COPYRIGHT © 2019 BCA ARCHITECTS & ENGINEERS, WARNING - IT IS A VIOLATION OF OF THE NEW YORK STATE EDUCATION LAW FOR ANY UNAUTHORIZED ALTERATIONS
TO THIS DOCUMENT AS PER ARTICLE 145 AND 147
DATE DESCRIPTION
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2019-532 Engineered Solutions
646 Plank Road #104 Clifton Park, NY 12061 phone: (518) 280-2410 fax: (518) 280-2481 www.engineered-solutions.net
Electrical Communications
Mechanical ES # 19132
1 10/26/2020 BID ADDENDUM NO. 1
DMB
M-002
SCHEDULES
KRR
