A04_-_Statement_of_Work_-_HVAC_-_BPA.pdf

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Statement of Work HVAC Maintenance and Repairs

Detroit River International Wildlife Refuge

Trenton, Michigan

I. PROJECT DESCRIPTION:

Provide services and products to maintain the integrity of the Detroit River International Wildlife Refuge Visitor Center’s Daikin HVAC system. This will include on-going maintenance, inspections, necessary repairs, and verification of proper operation. These units need to be serviced by trained, authorized factory service representatives to function properly. Allowing HVAC professionals not trained on Daikin units put us at risk of severe damage to the equipment leading to higher maintenance costs and possibly even catastrophic failure resulting in total unit replacement.

II. LOCATION:

The John D. Dingell Jr. Visitor Center is located at 5437 W Jefferson Ave., Trenton, MI 48183.

III. DESCRIPTION OF WORK AREA:

The John. D. Dingell Jr. Visitor Center is located at the Detroit River International Wildlife Refuge in Trenton, Michigan. The Visitor Center is part of a combined National Wildlife Refuge System’s Administration/Visitor Center facility at this gateway location.

IV. DESCRIPTION OF WORK:

The HVAC system at the Detroit River International Wildlife Refuge Visitor Center is a Daikin system comprised of 3 outdoor Condensers, 18 Ceiling Cassettes, 7 FCU (Fan Coil Units), and 2 ERV Energy Recovery/ DOAS/Dedicated outside air systems. Proper maintenance and management of this Daikin system is key in the lifespan of all components. It is imperative that the HVAC system operates efficiently and effectively to prolong the lifespan of all equipment and the building itself. Additionally, it is critical to ensure staff and visitors are comfortable when working or visiting the building. The establishment of a BPA will allow refuge staff to quickly respond to any HVAC problems and troubleshoot any malfunctions to rapidly ensure efficient operations of the system.

Scheduled maintenance inspections are performed at various times throughout the year. Tasking Sheets provide an overview of the maintenance to be performed. Below are examples of some of the tasking that may or may not be provided.

Split System VRF/VRV Condensing Unit

Annual Inspection

• Check control operation of condensing unit

• Check flare nuts for torque tightness

• Check refrigerant system pressures and temperatures - within manufacturer's specifications

• Check condenser fan blades and operation

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• Check molex connectors for proper connections

• Check subcooling EEV

• Check all service valves

• Check low voltage communication terminals

• Check external piping

• Check condenser coil/ clean as per contract

• Check general condition of unit

Operating Inspection

• Check compressor operation if applicable

• Check condenser fan motors operation

• Check for visible refrigerant/ oil leaks

• Check all electrical connections

• Check overall condition of unit

Split System VRF/VRV Indoor Unit

Annual Inspection

• Check filters – Customer to clean washable filters

• Check blower wheel

• Check EEV

• Check general condition of indoor unit

• Check molex connectors

• Check low voltage communication terminals

• Check flare nut connections

• Check float switch on internal lift pump

• Check condensate pan

• Check condensate pipe

• Operating sound

• Check swing motor

• Check error code history

Operating Inspection

• Check filters - Customer to clean washable filters

• Check blower wheel

• Check EEV

• Check general condition of indoor unit

• Check molex connectors

• Check low voltage communication terminals

• Check flare nut connections

• Check float switch on internal lift pump

• Check condensate pan

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• Check condensate pipe

• Operating sound

• Check swing motor

• Check error code history

Fan Coil

Annual Inspection

• Check electrical wiring and electrical components for proper operation and condition

• Verify unit thermostat controller operates properly

• Inspect safeties for proper mounting and operation

• Inspect fan wheels

• Inspect shaft and motor bearings

• Verify proper pulley alignment

• Lube all motors and bearings

• Check evaporator coil/ clean per contract where applicable

• Brush clean evaporator fan wheel as required

• Inspect filters, replace per contract

• Clean drain pan and verify proper water drainage through condensate piping system

• Check external interlocks for proper operation

• Inspect unit cabinet for proper integrity

• Place system in operation and measure temperature drop across coil

Operational Inspection

• Measure the temperature drop across the coil

• Perform routine maintenance as required

• Inspect filters, replace per contract

• Lube fan bearings

• Lube motor bearings

• Check coils for cleanliness

V. PERFORMANCE PERIOD

The Period of Performance for this BPA is 7/1/2024 through 6/30/2029.