B08_Attachment_1_Updated_SOW_Replace_AC_System_at_Bldg_341_0001.pdf

Gateway National Recreation Area

Sandy Hook Unit

Replace Air Conditioner System at Building 341

DATED:

July 2025

NATIONAL PARK SERVICE

NORTHEAST REGION

SCOPE OF WORK

Replace Air Conditioner System at Building 341

Gateway National Recreation Area - Sandy Hook Unit

Intent The intent of this contract is for a complete Replacement and installation of the air conditioning system and make the system operational located at Building 341. The replacement will include, but not limited to, the one 2.5-ton air conditioner condenser, air handler, line set, and thermostat. This work will be conducted at 341 Randolph located in the Sandy Hook Unit of Gateway National Recreation Area, Fort Hancock, and Monmouth County, New Jersey 07732.

Existing YORK AC Condenser Unit in use:

Model Number: H2RA030S06D Serial Number: WEMM025821 Refrigerant: R22 2.5-Ton Unit

10 SEER

Existing YORK Single Piece Air Handler Unit in use:

Model Number: F2RP036H06B Serial Number: (S)XFMS164598 Horizontal Unit Non-Heat

The Vendor shall:

Provide and replace the existing 2.5-ton air conditioning condensers. The replacement condenser shall be a minimum of 2.5-tons with a 454B refrigerant. The condenser shall be Energy Star Certified, and no less than 15.2 SEER2. The condenser shall be designed for a coastal environment and shall be saltwater corrosion resistant.

If the condenser is not pretreated, a coastline anti‐Corrosive coating for saltwater environment must be applied on all components including but not limited to:

• Condenser coil and internal exposed components

• Evaporator Coil and some internal exposed components

• And copper corrosion resistant “Grenade” fitting shall be installed.

The new condenser shall be installed in the exact location of the old one. A new condenser pad, whips, and disconnect shall be provided and installed for the new condenser. The condenser does not need to be raised or elevated.

The line-set shall be entirely replaced, running a new copper refrigeration line-set from new outdoor condenser to the new indoor air handler for the system. No compression/Crimped fittings shall be used. All fittings and refrigerant lines shall be brazed.

The one horizontal air handler shall be replaced with the same brand of condenser to ensure compatibility and tied into the existing systems and ductwork. Ductwork modifications shall be completed as needed. The air handler is located above the drop ceiling of the first floor of Building

341. The new air handler is NOT required for heat and a hot water coil is not required. The air handler shall be connected to the condenser for maximum efficiency.

New drain pan with safety switches shall be provided and installed for the air handler. Reconnect

PVC drain to new air handler with new emergency shut off switches and new backup emergency shut off.

One (1) programmable thermostat shall be provided and installed. The thermostat located on the first floor. The thermostat shall be 7-day programmable with 4-program periods per day scheduling. Thermostats shall have a digital backlit display.

A Flex Connector shall be supplied and installed to isolate the Fan Coil from the ductwork.

All work shall be done by code. All manufactures guidelines and requirements shall be followed.

Complete an entire system inspection and start-up, including pressure testing, of the new equipment to verify the entire system is working properly.

Contractor shall be qualified to work on units being installed. All parts/materials shall be from or approved by the manufacture of the units being installed.

All labor, parts, and materials shall be provided to replace the existing AC system. All removal and proper disposal of existing equipment shall be included.

Shall have a minimum 10-year warranty on compressor. Contractor shall complete the registration of all components for the warranty.

The Primary Contractor Shall hold all required mechanic licenses to work on the HVAC replacement, and the Primary Contractor shall perform a minimum of 51% of the labor.

Information Package on Materials Provided:

Contractor must provide all manufactures specs, manuals, and information on materials they are providing.

Contractor must supply warranty information on all applicable materials.

Site Visit All potential contractors are strongly encouraged to visit the site prior to bidding the work. If a contractor does not complete a site visit, it does not relieve them of the accuracy of their pricing. The set days of the site visit will be specified, and the hours of the site visit will be between 9 am and 2 pm. The visit needs to be scheduled through the park POC.

Work Location The location of the work to be performed is at the Sandy Hook Unit of Gateway National Recreation Area, 341 Randolph Road, Fort Hancock, NJ 07732. Vendor shall contact COR and coordinate all onsite work to be performed.

Period of Performance All AC replacement and construction work shall commence within 6 weeks of Contract Award. Work shall be completed within 30 days after the CO issues the notice to proceed. Work shall be performed in between the hours of 7 a.m. and 5 p.m. during the work week of Monday thru Friday excluding Federal Holidays, unless prior approval is given by the COR.