5 Statement of Work NCH Pony Chiller 20200316.pdf

Scope of Work

Jockey Chiller Installation

Design and Construction Nakamura Courthouse (WA0035ZZ)

1010 5 th

Avenue

Seattle, WA 98104

1. GENERAL

1.1. Design and construction for the addition of one variable-speed-compressor jockey-chiller to satisfy the shoulder season and early morning cooling loads of the Nakamura courthouse building. The new chiller shall be mechanically connected to the existing cooling plant, and controlled by the existing building automation system. The building cooling sequence of operation shall be modified to incorporate the new

Jockey chiller, as the first stage of cooling for the building, as well as provide trim capacity, or third stage cooling, if needed.

1.2. Prepare construction specifications and engineering drawings to include all necessary work for a fully functioning, energy-efficient, and Clean Air Act compliant chiller installation, including:

a. Demolition and disposal of one of the two existing 200-Ton chillers, to make room for the new jockey chiller.

b. The installation of a new water cooled 125-Ton variable-speed-screw-compressor chiller, with turn down ratio as low as 15% of its rated capacity, or 19-tons.

c. The installation of one new primary chilled water pump sized appropriately for the new chiller.

Two new VFD rated motors for the existing manifolded condenser water pumps. The primary chilled water pump and one of the condenser water pumps are to operate anytime the new jockey chiller is called for operation.

d. New pressure and temperature gauges, at the inlet and outlet of the chiller, and at the condenser and chilled water pipe connections.

e. Modifications to electric service, per NEC, to operate the chiller and the new pumps

f. Modifications to existing chilled water and condenser piping configuration to accept the new chiller

g. Installation of a condenser water bypass valve, equipped with automatic modulating actuator, and tied to building automation system for the control of the condenser water temperature.

h. Modification of the building automation system, to incorporate the new chiller, and the new primary chilled water pump, and the variable speed condenser water pumps, in the central cooling sequence of operation.

i. The modification of the building automation system, to incorporate the existing 30-ton flat-plate heat exchanger into the sequence of operation, as water-side economizer

j. Testing and balancing of the chilled water and condenser water loops.

Statement of Work

Pony Chiller addition

Nakamura Courthouse, Seattle WA.

k. Functional performance testing, of the system to verify the sequence of operation per the GSA approved sequence of operation is operational as intended

l. ALL finishes to the mechanical space shall be restored to its current state of condition, after

Contractor work is completed, to include any re-painting of surfaces and finishes.

1.3 Perform all work identified to add the new chiller as identified in this RFP. Work shall include all required calculations, project management, submittals, preparatory work, scheduling, construction, testing and balancing, commissioning, closeout and other work as required to fully complete the design and construction and installation of the chiller in Nakamura Courthouse.

2. BACKGROUND

2.1 This project is being undertaken to increase the efficiency of the cooling equipment at Nakamura courthouse, specifically during the lower load cooling hours of the year (spring and fall, as well as early cool summer mornings). Presently, the central plant has two 200 ton centrifugal chillers, which are not able to meet the lower loads without excessive short-cycling. Presently, during the peak cooling season, one 200-chiller, at part load, can maintain the cooling load of the building.

2.2 Existing conditions:

a. The two existing 200 Ton centrifugal chillers are located at the first floor mechanical room of the facility. These chillers are equipped with VFDs, however, the VFDs are inoperative.

b. There is a 30-Ton flat plate heat exchanger installed in the condenser water loop, and tied to the secondary chilled water loop. This heat exchanger has not been operative for some time.

c. The chillers provide chilled water for space conditioning to a constant flow primary and a variable flow secondary chilled water system.

d. There is one dedicated primary chilled water pump per chiller and manifolded condenser water pumps that can serve either chiller, both of which are currently constant speed.

e. The secondary chilled water system is powered by variable speed pumps, and serves the cooling loads at the air handling and fan coil units located throughout the facility.

f. There are two cooling towers with automated isolation valves and actuators on both the condenser supply and return lines. Either cooling tower can serve either chiller as the two condenser pumps in the basement are in a manifolded configuration downstream of the chillers.

g. The building control system has been upgraded to a Tridium system, and it interfaces with KMC

Controls zone controllers, via BACNET open communication protocol. This building automation system is behind the GSA firewall. Any IP addressable network device planned for installation on this network shall meet the stringent GSA network security protocols prior to being placed on the GSA network. IP addressable network devices shall meet GSA’s IT security protocol, and will need to be scanned and vulnerabilities mitigated, prior to being placed on

GSA network.

3. SCOPE OF SERVICES

3.1. Design and Construction documents

3.1.1. Removal of the 200-Ton Chiller (with most run hours between the two chillers)

a. Removal of one 200-ton chiller.

b. Prepare the existing concrete pad for the installation of the new jockey chiller.

c. Remove piping, fittings, and devices not necessary to the operation of the new chiller.

d. Remove the primary chilled water pump associated with the demoed chiller, which is not necessary for the operation of the new chiller.

e. Remove electrical conduit and wiring not necessary to the operation of the new chiller

3.1.2. Prepare design and construction documents to include:

a. The installation of the new chiller, which shall be a 125-Ton variable-speed screw compressor chiller, capable of operating during lower building load conditions.

1. The new chiller shall be able to operate at 15% of its rated capacity or minimum of

19-Tons, without affecting the manufacturer’s warranty, and without the use of hot-gas-bypass.

2. The new chiller shall be capable of handling condenser water temperatures as cold as 55 degrees Fahrenheit, and be able to follow behind the water side economizer as the first stage of cooling.

3. When the cooling load of the building exceeds 90% of the new chiller’s capacity, for longer than 30-minutes, the next stage chiller shall be activated.

4. Automatically isolate one cooling tower from the loop this chiller is not operating.

3.1.3. Primary chilled water pumps and manifolded condenser water pumps:

a. Install a new dedicated primary chilled water pump which shall be selected for constant flow operation such that at design flow condition the pump-head is equal to minimum of

1.25 x (125%) the Design and construction system dynamic and static head. The new dedicated pump shall be suitable for operation with the new variable speed jockey chiller, such that the minimum flow conditions are met such that the new chiller warranty can be maintained.

b. Modify the two existing condenser water pumps with new VFDs and motors, coordinate water balancing with controls contractor to determine condenser pump VFD speeds needed to meet flow demand for 200 ton chiller, 125 ton chiller, 30 ton plate/frame operation.

c. Piping modifications to new points of connection of the existing chilled water and condenser water piping system.

d. Concrete housekeeping pad modifications, as necessary, for the new chiller, and associated pumps.

e. Chiller vibration absorption isolation shall be sized appropriately for the chiller weight, and its operation.

f. Condenser and chilled water system drain-down and refill, as necessary.

g. Install new isolation valves and expansion joints at the inlet and outlet side of the chilled water water pumps.

h. Install a new backflow preventer at the outlet side of the new chilled water pumps.

i. Install manual isolation valves at the inlet and outlet side of all new pumps, to allow for servicing the pumps.

j. Install strainers at the inlet side of the new pumps.

k. Install one each variable frequency drives on each constant volume pump, for balancing the water flow.

3.1.4. Chiller installation:

a. Install chiller safeties (i.e. flow switches at condenser and chilled water pipes, and others as necessary, per chiller manufacturer’s requirements), for the safe operation of the chiller, and to meet the manufacturer’s necessary operating conditions, without affecting equipment warranty.

b. Install automatic isolation valves at the inlet and outlet sides of the new chiller. The automatic isolation valves shall be operated automatically by the building automation system, when the new chiller is enabled or disabled. When the chiller is off, the automatic isolation valves shall be closed, preventing the building chilled water and condenser water from flowing through the chiller’s evaporator and condenser barrels.

c. Provide chiller factory performance start up and testing.

d. Provide chilled water inlet and outlet temperature sensors, at the chiller inlet and outlet, and wire to the existing Building Automation System (BAS), for monitoring and controls.

3.1.5. Hydronic Piping

a. Piping should be sized for a pumping head loss at or below 5 feet per hundred equivalent feet of piping at design flow rates.

b. Provide pipe coupling system to match existing piping at the building.

c. Design seismic restraint hangers and supports to match existing and comply with current local codes.

d. Provide pressure gages and temperature gages on both the inlet and outlet condenser water lines to the chiller. Also provide pressure gage on chilled water outlet and temp gages on both inlet and outlet lines.

e. Provide modulating bypass valve at the condenser inlet of the new 125-ton chiller to provide for minimum flow, and provide the ability to maintain the chiller operational, under lower inlet condenser water temperature conditions.

3.1.5 Disconnect Switch

a. Non-fused disconnect switches shall be provided for chillers, and the new pumps

3.1.6 Refrigerant Monitoring System

a. The contractor shall provide a refrigerant monitoring system, suitable for the refrigerant in the new chiller, properly installed to identify refrigeration leaks. If applicable, the contractor may expand the existing refrigerant monitoring system to monitor and operate the necessary ventilation fans to safely evacuate the refrigerant out of the building’s central plant.

b. The existing emergency stop switch shall stop the new chiller immediately upon activation.

c. The existing ventilation system, related refrigerant monitoring and evacuation, shall be used for the new chiller, upon the detection of refrigerant in the mechanical room.

3.2 Modification of the existing Building Automation system.

Modify the building automation system sequence of operation to operate of the cooling plant system to incorporate the new chiller, and enable the existing flat-plate heat exchanger in the cooling loop, as follows:

3.2.1 All points adjustable at the chiller should be brought to the front end of the BAS and a

COMPLETE LIST of operator adjustable points (such as staging delay) shall be provided for review by GSA.

3.2.2 When outside air temperature conditions are suitable, the first stage of the cooling shall be the existing 30-ton flat-plate water side economizer, which will be called to operate.

The flat-plate water side economizer shall utilize the cooling towers as a source of cooling to provide the necessary cooling water to the bldg. load, through the secondary chilled water loop.

3.2.3 The next stage of cooling shall be the new variable speed screw chiller, which shall operate from its lowest turn-down cooling capacity, without the use of hot-gas-bypass, to satisfy the cooling capacity of the building efficiently and effectively. The new chiller shall follow the flat-plate heat exchanger and be capable of handling condenser water temperatures as cold as 55 degrees Fahrenheit.

3.2.4 When the cooling load of the building exceeds 90% of the new chiller, for longer than

30-minutes, the next stage chiller (the existing 200-ton centrifugal chillers) shall be enabled.

3.2.5 If additional cooling, beyond the 200-Ton chiller is needed, the new 125-Ton chiller shall be enabled, as trim capacity to satisfy the bldg. load.

3.2.6 If either of the chillers fails to operate, the next stage chiller shall be enabled to operate.

3.2.7 Automatic cooling tower isolation valves shall be used to isolate a cooling tower, if one chiller is not needed.

3.2.8 The automatic cooling tower bypass valve shall be used to control the condenser water supply temperature to the chillers and ensure the chillers aren’t damaged from too low of condenser water temperature to the active chiller.

3.2.9 The existing controls at this site were upgraded in 2017. The front end is utilizing

Tridium Niagara N4.7 and the field devices are KMC branded controllers. Contractor shall provide necessary software and labor to utilize the existing BAS server (Tridium

Niagara 4.7 or greater). Server shall be installed and configured on Public Building

Services Server Support (PSS) provided virtual servers.The chiller plant controller is a

KMC BAC 5901C device and programming changes to this central plant should be completed by a trained and certified KMC controls technician.

3.2.9.1 If any new IP-addressable devices are added. A Network diagram is required prior to installation to document any new IP devices that terminate on the GSA network and will require GSA IT approval prior to installation. The GSA shall be included in the design phase of the network infrastructure. Vendor-provided diagrams must be submitted in digital display in Microsoft Visio or PDF.

3.2.9.2 Any contractor- provided hardware requiring access to the GSA network, must be pre-approved for use by the GSA (PBS CIO). All IP-enabled devices will be evaluated and scanned to determine any potential IT Security vulnerabilities. GSA will provide a report indicating the required configuration changes to the device that must be made in order for installation to be acceptable and approved. Contractors must make any required configuration changes before their product will be accepted for use.

Configuration changes are not a change in scope and are not subject to equitable adjustment under the contract.

3.2.9.3 Any Contractor proposed non-standard software must be pre-approved by GSA

(OCIO). "Nonstandard software" is defined as software which is not widely dispersed and commercially available on desktops. The software must be compatible with the standard GSA image (configuration). The GSA standard image utilizes a Windows operating environment, with the most current updates, as recommended by Microsoft.

All software that is pre-installed on the image is updated with the latest security patches. Contractor proposed application software and server software must be compatible with the most current version of GSA standard desktop software (i.e.

Windows, Adobe, JAVA and McAfee) and server software (VMware) Vendor software shall be current in accordance with industry standard to within one year of delivery to the government. An updated list of the version of standard currently required for GSA workstations and servers can be provided by GSA

3.2.10 Provide chilled water inlet and outlet temperature sensors, at the chiller inlet and outlet, and wire to the existing Building Automation System (BAS), for monitoring and controls.

3.2.11 Provide condenser water inlet and outlet temperature sensors, at the chiller inlet and outlet, and wire to the existing Building Automation System (BAS), for monitoring and controls.

The calibration of all new temperature sensors shall be verified against a calibrated temperature sensor, and the documentation of calibration provided to the GSA Project

Manager.

3.2.12 The chilled water sequence shall be a variable chilled water setpoint, and shall vary the cooling water supply from a set minimum to a set maximum (i.e. 44 to 60°F), based on building cooling load. The BAS shall poll the existing cooling needs of the building, periodically, and adjust the chilled water supply temp accordingly.

3.2.13 The sequence of operations shall optimize energy efficiency of the chilled water plant as a system including the primary and secondary chilled water pumps, condenser water pumps and cooling tower fans, and chillers.

3.2.14 The new chiller shall be equipped with its own controller, manufactured and supported by the chiller manufacturer, and be able to communicate directly with the existing BAS, for setpoint adjustments, status and condition assessment, and enable disable commands.

Provide a BACnet/MSTP interface card to the existing KMC 5901C controller.

3.2.15 The contractor shall provide the latest version of the chiller controller panel, with the latest version of the manufacturer’s software installed on it. Under no circumstance shall the contractor install an obsolete chiller control panel or operating software on the new chiller.

3.2.16 Provide as-built CAD drawings complete. Provide a complete sequence of the control for the new system which shall integrate the existing sequence of operation with the new.

Provide as-built CAD drawings complete. Provide assistance to the Contracting Officer’s commissioning agent (CA) as required to assist in completing a commissioning test and report.

3.3 Commissioning

3.3.1. Construction Contractor shall be required to provide commissioning of the new central plant cooling system as part of this project.

3.3.2. The Construction Contractor shall provide a pre-functional checklist, startup plan, and a functional checklist for the chiller.

3.3.3. The sequence of operation shall be verified by the Construction Contractor in the presence of the GSA during the commissioning phase, which shall include exercising of all portions of the sequence of operation as well as all interlocks, emergencies, interaction with other equipment and integration of the new chillers into the complete building system.

3.4 Design and Construction Guidelines

3.4.2. Refrigeration Machines:

a. The Design and construction of refrigeration machines must comply with Clean Air Act amendment Title VI: Stratospheric Ozone Protection and Code of Federal Regulations

(CFR) 40, Part 82: Protection of Stratospheric Ozone.

b. Chlorofluorocarbon (CFC) refrigerants are not permitted in the new chiller. Acceptable non-CFC refrigerants are listed in EPA regulations implementing Section 612

(Significant New Alternatives Policy (SNAP) of the Clean Air Act, Title VI:

Stratospheric Ozone Protection.

c. Refrigeration machines must be equipped with isolation valves, fittings and service apertures as appropriate for refrigerant recovery during servicing and repair, as required by Section 608 of the Clean Air Act, Title VI. Chillers must also be easily accessible for maintenance including internal inspections and cleaning.

3.4.3. Acceptable refrigerants: R-134a, R-410a, others as approved by GSA.

3.4.4. Building Codes and Standards: Design and installation shall be specified to meet or exceed all applicable building Codes and Standards and to comply with GSA P-100 standard.

3.4.5. Licensed professional engineer shall stamp engineering drawings, and prior to the start of construction.

3.4.6. Equipment:

a. Rated efficiencies to exceed the latest version of ASHRAE 90.1 requirements.

b. Chiller with efficiency rating to be a maximum of 0.56 kW/ton and maximum NPLV of

0.30 kW/ton or lower, in accordance with ARI Standard 550/590-latest version. The term maximum efficiency shall be interpreted as minimum IPLV and minimum NPLV based on ARI standard 550/590. The designer shall provide controls necessary to limit the effect of low delta T syndrome that happens with some primary-secondary pumping systems. The chillers shall have such software necessary to optimally operate during peak loads and off-peak loads over the operating period of the chillers.

c. The chiller shall be capable of operating under low entering condenser water temperature

(55 degree F), and maintain operation. The low entering condenser water temperature will occur when the bldg. is exiting the water-side economizer sequence, and is switching to refrigeration cooling.

3.5 Phased Design/Build

3.5.1 General

This contract shall be a design/build construction project, where the contractor has the burden of design and meeting the GSA performance requirements at the end of the project. The installing contractor shall be responsible for design, demolition, construction sequencing, commissioning and verification of performance of the system. Other areas of the project that may be applicable include but not limited to geotechnical, site work, exterior utilities, foundations, substructure, superstructure, exterior closure, roofing, interior construction, mechanical, electrical, etc.

3.5.2 Sequence of Design-Construction

After receipt of the Contract Notice to Proceed (NTP) the Contractor shall initiate design, comply with all design submission requirements and obtain Government review of each submission. The contractor may begin construction on portions of the work for which the

Government has reviewed the final design submission and has determined satisfactory for purposes of beginning construction. The Contracting Officer will notify the Contractor when the design is cleared for construction. The Government will not grant any time extension for any design re-submittal required when, in the opinion of the Government, the initial submission failed to meet the minimum quality requirements as set forth in the contract.

3.5.3 Notice-to-Proceed for Limited Construction

If the Government allows the Contractor to proceed with limited construction based on pending minor revisions to the reviewed Final Design submission, no payment will be made for any in-place construction related to the pending revisions until they are completed, resubmitted and are satisfactory to the Government.

3.5.4 In-Place Construction Payment

No payment will be made for any in-place construction until all required submittals have been made, reviewed and are satisfactory to the Government.

3.5.5 Commencement of Construction

Construction of work may begin after receipt of the clearance for construction (Notice to

Proceed) for each design phase. Any work performed by the Contractor prior to receipt of the clearance for construction, shall be at the Contractor's own risk and expense. Work cleared for construction that does not conform to the design parameters and/or requirements of this contract shall be corrected by the Contractor at no additional cost or time to the Government.

3.5.6 Design Stages

Design submittals are required at the Concept (65%) and Final (100%) design stages and a

Corrected Final design submittal.

3.5.7 Calculations: The calculations shall include:

a. Power systems load calculations. Circuit ampacity. Feeder size, breaker selection and voltage drop analysis to support the proposed wiring method.

b. Pipe sizing.

c. Vibration analysis. The chiller and piping shall be analyzed to ensure no structure borne or transmitted vibration shall exit the mechanical installation space.

3.5.8 Drawings: (65 %) Due eight (12) weeks from NTP. Electronic copies in PDF and CAD format would be acceptable. GSA will have seven (14) days for review of this deliverable.

● The following shall be provided as part of the 65% design:

● Chiller installation, piping installation (new and modified) plan and elevation

● Electrical equipment layouts,

● Refrigerant leak detection system

● I/O summary and BAS modification

● Power line diagram with interface connection points,

● Equipment schedule and legend

● Motor control centers, panels and all other utilization equipment shall be located on the floor plans. Schedules for applicable equipment shall be provided. The schedules shall include all pertinent information to fully describe the equipment. Elevations for free standing equipment shall be provided.

3.5.9 Final Design Review Submittal (100%) shall be due four (4) weeks from acceptance of 100%.

The 100% design shall incorporate and satisfactorily incorporate the GSA comments at 100% design otherwise the 100% design shall be rejected. Electronic copies in PDF and CAD format would be acceptable. GSA will have seven (14) days for review of this deliverable.

The review of the submittal is to ensure that the design is in accordance with directions provided by the Contractor during the design process.

The only effort remaining between the Final Design Review Submittal (100%) and the Back check Submittal is the incorporation of the Government Review Comments. The Contractor shall submit the following documents for Final review:

a. Design Analysis, developed to a 100% design stage. The Design Analysis shall be in its final form, and bear the professional engineering stamp and signature of the responsible design engineer. It shall include all backup material previously submitted and revised as necessary. All design calculations shall be included. The Design Analysis shall contain all explanatory material giving the design rationale for any design decisions, which would not be obvious to an engineer reviewing the Final Drawings and Specifications.

b. 100% Complete Construction Specifications. The Draft Specifications on all items of work submitted for Final Review shall consist of marked-up proprietary specifications.

c. 100% Complete Construction Drawings. The Contract Drawings submitted for Final Review shall include the drawings previously submitted which have been revised and completed as necessary. The Contractor is expected to have completed all of his coordination checks and have the drawings in a design complete condition. The drawings shall be finalized at this time including the incorporation of any design review comments generated by the

Preliminary design review. The drawings shall contain all the details necessary to assure a clear understanding of the work throughout construction.

3.5.10 Corrected Final/Back Check. Upon incorporating the final design comments and assurance of incorporation of the comments the Corrected final drawings shall be issued by the Contractor.

All corrections shall be incorporated and final design analysis and calculations shall be included.

3.5.11 Construction work shall not commence until all design considerations have been approved by

GSA.

4 Execution

4.1 General

a. The Chiller plant shall remain operational and be able meet normal building chilled water requirements as-needed throughout the entire demolition, construction and commissioning process. Contractor shall submit a construction phasing plan to the GSA for review and approval prior to start of site work.

b. Locate the new chiller in the Chiller Room. Exact locations to consider design requirements for vibration control, maintenance access requirements for chiller servicing and ease of access to all other existing equipment in the chiller room (pumps, heat exchanger, etc.) for both servicing and future replacement.

c. Chiller Plant Control

3.5 Integrate monitoring and control of new chillers with the existing building controls system.

3.6 Update existing chiller plant control sequence used by Building’s EMS for new chiller configuration. Provide:

● Automated sequencing of new chiller with existing pumps and with existing cooling towers to (1) match building load requirements, (2) minimize number of operating chillers required, (3) minimize chiller cycling, (4) maintain high chiller plant efficiency and (5) balance operating hours of the two larger machines and all existing pumps, over time.

● Building operators shall have the ability through the EMS to override automated sequencing so they can manually enable chiller start/stop sequences.

● Provide one (1) slow-acting isolation valve for each tube bundle for chiller isolation control.

● Updated graphics at the building automation system front end, to incorporate the new chiller plant configuration, including the new chiller, new pumps and automatic isolation valves, their status and operation. The graphics shall be animated indicating the operation of the chillers and the pumps.

d. Chiller Room Refrigerant Safety.

3.6.1.1 New installation to comply with Section 608 of the Clean Air

Act of 1990 as it pertains to refrigerants, including all subsequently published amendments and regulations.

3.6.1.2 Upgrade chiller room emergency ventilation, including refrigerant monitoring system, as needed to meet requirements of

ANSI/ASHRAE Standard 15 – 2004.

3.6.1.3 Provide chiller refrigerant relief valves and piping in room as required to meet ANSI/ASHRAE Standard 15 – 2004.

e. Seismic Design: The seismic constraint design shall be completed by a qualified professional engineer, and shall comply with all applicable code requirements including but not limited to the International or Uniform Building

Code with State and City amendments.

f. Vibration Isolation:

2. The contractor shall retain a qualified professional engineer to design all mechanical equipment and mechanical system supports.

3. All mechanical equipment and piping shall be mounted on or suspended from vibration isolators to reduce the transmission of vibration and mechanically transmitted sound to the building structure. Vibration isolators shall be selected in accordance with the weight distribution so as to produce reasonably uniform deflections.

4. No rigid connections between equipment and the building structure shall be made that degrades noise and vibration control.

g. Mechanical Identification:

1. Provide manufactured pipe markers to match existing that indicate service on each piping system. Install with flow indication arrows showing direction of flow.

2. Provide matching valve tags, color coded for service, on valves and control devices in piping systems. List tagged valves in a valve schedule mounted on the wall.

3. Provide equipment markers: Engraved laminated plastic.

3.6.2 Manufacturer’s Field Services

a. Prepare and start chiller systems under provisions of the manufacturer’s recommendations and Conditions of the Contract.

b. Provide services of the chiller manufacturer’s factory trained representative to perform final leak test, refrigerant pressure test, evacuate, dehydrate, charge, start-up, and calibrate controls, as necessary, for a complete and operational system.

c. Provide and instruct Owner (10 hours) on operation and maintenance of the new chiller and pumps, during regular working hours of the building. Training shall include instruction of operation and monitoring the Chiller Operation in the EMCS.

d. If Contractor concludes chiller(s) must be partially disassembled for rigging, the chiller manufacturer’s representative shall at a minimum be retained by Contractor to witness and approve the entire process of disassembly and subsequent reassembly of chiller(s).

3.6.3 Testing and Balancing

a. Perform each applicable visual and mechanical inspection and electrical test stated in NETA Acceptance Testing Specification.

b. Chilled and Condenser Water Systems:

1. Balance the new and existing chiller system and existing associated pumps.

2. Testing, Adjusting, and Balancing Agent Qualifications: AABC or

NEBB certified.

3.6.4 Installation Submittals

a. Submit the following under provisions of Conditions of the Contract except as noted. The Submittal Requirements of the “General Requirements” sections also apply for all materials and work done as part of this Contract.

b. Submit product data indicating rated capacities, weights (delivered and operating), dimensions, required clearances, specialties and accessories, electrical requirements and wiring diagrams.

c. Submit performance data indicating energy input versus cooling load output at 25%, 50%, 75% and 100% of full load, including input kW per ton and NPLV and IPLV, per ARI Standard 550-2003, including condenser water relief per ARI Standard 550.

Chilled water and condenser water flow rates and pressure drops shall also be included.

d. Submit minimum acceptable water flow rates that may be used in the evaporator and condenser of each chiller for future (not in contract) variable flow pumping system. The Chiller manufacturer shall provide written verification that chillers being provided come with controls that allow for stable operation under variable water flow system applications through evaporator and condenser bundles.

e. Submit product data indicating amount of refrigerant charge (lbm) and amount of oil required (lbm).

f. Drawings: Floor plans for new construction, drawn to scale and coordinated with the following:

1. Structural support.

2. Piping.

3. Wiring, including spaces reserved for electrical equipment.

4. Access requirements, including working clearances for mechanical controls and electrical equipment, and tube pull and service clearances.

5. Demolition and new construction hydronic flow schematics showing chilled water system in chiller room and entire condenser water system.

6. I/O summary with schematics of systems

g. Submit sound data as follows: The chiller sound pressure level (SPL), in decibels

(dBa), with a reference pressure of 20 micropascals. All ratings shall be in accordance with ARI Standard 575-94, "Method of Measuring Machinery within an

Equipment Space”

h. Provide a recommended list of spare parts that Owner should purchase and keep on site.

i. Submit shop drawings indicating components, assembly, dimensions, weights and loadings, required clearances and location and size of field connections. Indicate equipment, piping and connections, valves, strainers, gages and valves required for a complete system.

j. Submit written certification that components of the complete Chiller Installation are acceptable to the Chiller Manufacturer for the installation.

k. Submit chiller manufacturer's installation instructions (indicate rigging, installation and start-up procedures).

l. Manufacturer Seismic Qualification Certification: Submit certification that water chillers, accessories, and components will withstand seismic forces. Include the following:

1. Basis for Certification: Indicate whether certification is based on actual test of assembled components or on calculations.

2. The term "withstand" means "the unit will remain in place without separation of any parts from the device when subjected to the seismic forces specified."

3. Dimensioned Outline Drawings of Equipment Unit: Identify center of gravity and locate and describe mounting and anchorage provisions.

n. Qualification data for testing agencies and all field test reports.

o. Chiller Plant Control System:

1. Schematic flow diagrams showing pumps, valves, chillers and control devices.

2. Wiring Diagrams: Power, signal, and control wiring.

3. Details of control panel faces, including controls, instruments, and labeling.

4. Written description of sequence of operation.

5. Schedule of valves including leakage and flow characteristics.

6. Listing of connected data points, including connected control unit and input device.

7. JCI system graphics indicating monitored systems, data (connected and calculated) point addresses, and operator notations.

8. Schematics shall contain information for all chiller plant points in all panels and all associated wiring.

9. Control schematics: Point to point wiring diagrams including complete power system, interlocks, control device connection and communication connections. Schematics shall contain information for all points in all panels and all associated wiring.

3.7. Operation and Maintenance Data

3.7.1. Submit two (2) hard copies and one digital (CD) of the operations and maintenance data under provisions of Conditions of the Contract.

3.7.2. Include complete start-up instructions and documentation, maintenance data, parts lists, controls and accessories. Include trouble-shooting guide and all referenced material.

3.8. Regulatory Requirements

Conform to ARI 550-2016 code for testing and rating of water chillers.

Conform to ANSI/UL 465 code for construction of water chillers

Provide UL label on water chillers

Conform to ANSI/ASME SEC 8 Boiler and Pressure Vessel Code for construction and testing of water chillers.

Conform to ANSI/ASHRAE 15 code for construction and operation of water chillers.

Conform to National Electrical Code.

ASHRAE 90.1 latest version and Washington State Energy Code.

Conform to all national, state and local codes, including seismic codes.

Unit shall bear the ARI Certification Label for Centrifugal/Rotary Water-cooled

Chillers.

Electrical Components, Devices, and Accessories: Listed and labeled as defined in

NFPA 70, Article 100, by a testing agency acceptable to GSA, and marked for intended use

3.9 Delivery, Storage and Handling

a. Deliver products to site under provisions of Conditions of the Contract.

b. Comply with manufacturer's installation instructions for rigging, unloading and transporting units.

c. Protect units from physical damage.

3.10 Warranty

3.10.1. Provide complete parts and labor Warranty from the Chiller Manufacturer for three years from project substantial completion and acceptance of equipment by GSA... Provide an additional five year parts and labor warranty for all chiller compressors.

3.11 Maintenance Agreement

3.11.1. Chiller manufacturer shall provide all manufacturer-recommended preventive maintenance during the 3 year warranty period. This cost shall be reflected in the price.

4. Security Requirements

4.1 Work is located within the Federal Courthouse; clearance shall be required of all persons working in any area controlled. All badges and authorizations provided through

GSA/USMS shall be on the person and clearly visible for a positive identification, while on the premises of the Nakamura Courthouse.

5. Permits and Permissions

5.1. Any work or activity that may require cutting, welding or a method that may create or cause a fire or generation of smoke, shall be done with an approved “Burn Permit”.

Permit shall be requested by the contractor on GSA form # 1755, and approved by a

GSA, Operation Manager, before any work of the above nature may begin.

6. Schedule of Submittals and Reviews

6.1 Project Schedule

6.1.1 Submit 1 printed copy and (1) electronic copy of the project schedule in MS Project format.

The Contractor shall prepare the schedule to show the Contractor’s time period of performance in accordance with construction specification section one. The schedule shall show when the Contractor plans to begin and complete all work, significant milestones to include deliverable documents, and each major phase of the project.

Project schedule will be approved by GSA before on-site work begins.

Submission is due one (1) week after the date of Notice to Proceed (NTP).

6.2 Design/Build submittals

6.2.1 Submit design and construction document submittal schedule based upon Phased or

“FastTrack” submission.

6.2. Test Reports

6.3.1 Submit one (1) printed copy and one (1) electronic copy of the of test reports signed by a qualified testing agent. Test reports will be required for air flow, water flow, equipment operation and performance and commissioning report.

6.3.2 Submission is due 5 calendar days after the final punch list inspection.

7. Fee and Payment Schedule

7.1 Payments: GSA will pay a fixed fee, in the form of progress payments, based upon the completion and GSA approval of each submission. Progress payments shall not exceed

10% of contract value and a lump sum; final payment shall be made upon final acceptance by the government of the deliverable products and documents.

7.2 Release of Claims: Prior to final payment under this contract, the Contractor shall submit a

Release of Claims form for work performed under this delivery order on which the amount and nature of all outstanding claims shall be listed.