1240LS26Q0003 Black Ave. Furnace Replacement_Attachment 2 Statement of Work.pdf

US Department of Agriculture (USDA)

Statement of Work

Contents Project General Information

1.0 Scope of Work

2.0 Background

Contractor Requirements

3.0 Technical Requirements / Tasks

4.0 Schedule

5.0 Travel

6.0 Contractor’s Key Personnel

7.0 Attachments - Photos

Project 0403 SERV NEW Black Ave Furnace Replacement

General Information

1.0 Scope of Work

Decommissioning, removal and replacement of a non-functional natural gas furnace at a Forest Service owned residential facility. Project location is at 421 Black Avenue, Big Piney, WY, 83113.

2.0 Background

421 Black Avenue is a single story, Forest Service owned residential facility. The facility is approximately 1,560 square feet and was serviced by a Lennox Gas Heating Equipment System, Model No. GS6-145M. The existing furnace is located in a confined crawl space beneath the residence, which is accessible through a removable hatch cover in the backyard of the residence. See photos in Attachment A.

Within the crawl space, there is existing plumbing that would need to be navigated through carefully to fit a new furnace. Clearances are between joists and top of pipes are approximately 24” – 30” in height.

Dimensions of ductwork into furnace are approximately 23” x 23”.

Contractor shall verify all dimensions prior to installation.

Contractor Requirements

3.0 Technical Requirements / Tasks

The selected vendor shall remove the existing natural gas furnace and install a new natural gas furnace in the crawl space. The replacement shall adhere to the “SECTION 235416.13 - GAS-FIRED FURNACES” Specifications provided below.

An acceptable replacement is the “Coleman 79ES100C20SMPS1 Furnace 96% Efficient ECM Drive Motor”, or an approved equal, as reviewed by the Contracting Officer’s Representative (COR). The approved equivalent furnace includes the burner, heat exchanger, controls and any other appurtenances such as duct work.

Any components of the existing heating system that have met their lifecycle shall be disposed of properly and replaced in kind by the vendor. After installation is complete, the vendor shall run tests to ensure the heating system functions to expectation prior to closeout of the project.

The services approximately require the following actions:

• Decommission existing Lennox gas furnace

• Install new gas furnace

• Component and other appurtenances fabrication & installation

• Systems testing

• Travel

Areas for staging operations and storage of materials shall be approved by the Contracting Officer's Representative

(COR).

The contractor acknowledges they have taken the necessary steps to ascertain the nature and location of work, and have investigated and satisfied themselves as to the general and local conditions that can affect the work or its cost.

Any failure of the contractor to take the actions described and acknowledged in this paragraph will not relieve the Contractor from the responsibility of estimating properly the difficulty and cost of successfully performing the work, or for proceeding to successfully perform the work without additional expenses to the government.

4.0 Schedule

Start Date Date of Award

Period of Performance Completion No later than April 15, 2026.

5.0 Travel

Travel costs shall be included in the mobilization of the vendors’ bid or proposal.

6.0 Contractor’s Key Personnel

Laborer is the main personnel that would conduct the job.

7.0 Attachment A - Photos

Figure 1 - Existing Furnace Make & Model

Figure 2 - Profile view of existing furnace

Figure 3 - Profile of Motor & Belt

Figure 4 - Model Number for Motor

USDA FOREST SERVICE, R-4

421 BLACK AVE FURNACE REPLACEMENT

SECTION 235416.13 - GAS-FIRED FURNACES

PART 1 - GENERAL

1.1 SUMMARY, Section Includes:

1. Gas-fired, condensing furnaces and accessories complete with controls.

2. Air filters.

1.2 MEASUREMENT & PAYMENT

A. No separate payment will be made for the work included under this section; rather payment shall be considered to be included in the items of work listed in the Schedule of Items.

1.3 SUBMITTALS

A. Product Data: For each type of product.

B. Shop Drawings:

1. Include details of equipment assemblies. Indicate dimensions, weights, loads, required clearances, method of field assembly, components, and location and size of each field connection.

2. Include diagrams for power, signal, and control wiring.

C. Operation and maintenance data.

1.4 WARRANTY

A. Special Warranty: Manufacturer agrees to repair or replace the following components of furnaces that fail in materials or workmanship within specified warranty period:

1. Warranty Period, Commencing on Date of Substantial Completion:

a. Furnace Heat Exchanger: 5 years.

b. All other components: 1 year.

PART 2 - PRODUCTS

2.1 ASSEMBLY DESCRIPTION

A. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, Article 100, by a qualified testing agency, and marked for intended location and application.

B. General Requirements for Noncondensing Gas-Fired Furnaces: Factory assembled, piped, wired, and tested; complying with ANSI Z21.47/CSA 2.3 and NFPA 54.

2.2 GAS-FIRED FURNACES, CONDENSING

A. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to the following:

1. Coleman Heating and Air Conditioning

2. Carrier Corporation; a unit of United Technologies Corp.

3. Daikin

4. Lennox Industries, Inc.; Lennox International.

5. Trane

B. Cabinet: Steel.

1. Cabinet interior around heat exchanger shall be factory-installed insulation.

2. Lift-out panels shall expose burners and all other items requiring access for maintenance.

3. Factory paint external cabinets in manufacturer's standard color.

4. Airstream Surfaces: Surfaces in contact with the airstream shall comply with requirements in

ASHRAE 62.1.

C. Fan: Centrifugal, factory balanced, resilient mounted, direct drive.

1. Multitapped, multispeed with internal thermal protection and permanent lubrication.

2. Electronically controlled motor (ECM) controlled by integrated furnace/blower control.

D. Type of Gas: LPG.

E. Heat Exchanger:

1. Primary: Aluminized steel.

2. Secondary: Stainless steel.

F. Burner:

1. Gas Valve: 100 percent safety modulating main gas valve, main shutoff valve, pressure regulator, safety pilot with electronic flame sensor, limit control, transformer, and combination ignition/fan timer control board.

2. Ignition: Electric pilot ignition, with hot-surface igniter or electric spark ignition.

G. Gas-Burner Safety Controls:

1. Electronic Flame Sensor: Prevents gas valve from opening until pilot flame is proven; stops gas flow on ignition failure.

2. Flame Rollout Switch: Installed on burner box; prevents burner operation.

3. Limit Control: Fixed stop at maximum permissible setting; de-energizes burner on excessive bonnet temperature; automatic reset.

H. Combustion-Air Inducer: Centrifugal fan with thermally protected motor and sleeve bearings prepurges heat exchanger and vents combustion products; pressure switch prevents furnace operation if combustion-air inlet or flue outlet is blocked.

I. Furnace Controls: Solid-state board integrates ignition, heat, cooling, and fan speeds; adjustable fan-on and fan-off timing; terminals for connection to accessories; diagnostic light with viewport.

J. Accessories:

1. Combination Combustion-Air Intake and Vent: PVC plastic fitting to combine combustion-air inlet and vent through roof.

2. PVC Plastic Vent Materials:

a. PVC Plastic Pipe: Schedule 40, complying with ASTM D 1785.

http://www.specagent.com/Lookup?ulid=10016 http://www.specagent.com/Lookup?uid=123456985724 http://www.specagent.com/Lookup?uid=123456985730 http://www.specagent.com/Lookup?uid=123456985736

b. PVC Plastic Fittings: Schedule 40, complying with ASTM D 2466, socket type.

c. PVC Solvent Cement: ASTM D 2564.

1) PVC solvent cement shall have a VOC content of 510 g/L or less.

2) Adhesive primer shall have a VOC content of 550 g/L or less.

3) Solvent cement and adhesive primer shall comply with the testing and product requirements of the California Department of Public Health's (formerly, the California Department of Health Services') "Standard Method for the Testing and Evaluation of Volatile Organic Chemical Emissions from Indoor Sources Using Environmental Chambers."

K. Capacities and Characteristics: See Drawings.

2.3 AIR FILTERS

A. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to the following:

1. Aprilaire; Research Products Corp.

2. Filtrete Home Filtration Products; a 3M brand.

3. Flanders.

B. Disposable Filters: 1-inch- thick fiberglass media with ASHRAE 52.2 MERV rating of 8 or higher, in sheet metal frame.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Install gas-fired furnaces and associated fuel and vent features and systems according to NFPA 54.

B. Suspended Units: Suspend from structure using threaded rods, spring hangers, and building attachments.

Secure rods to unit hanger attachments. Adjust hangers so unit is level and plumb.

C. Base-Mounted Units: Secure units to substrate. Provide optional bottom closure base if required by installation conditions.

D. Wiring Method: Install control wiring in accessible ceiling spaces and in gypsum board partitions where unenclosed wiring method may be used. Conceal control wiring except in unfinished spaces.

3.2 CONNECTIONS

A. Gas piping installation requirements are specified in Section 231126 "Liquified Petroleum-Gas Piping."

Drawings indicate general arrangement of piping, fittings, and specialties. Connect gas piping with union or flange and appliance connector valve.

B. Install piping adjacent to equipment to allow service and maintenance.

C. Vent Connection, Noncondensing, Gas-Fired Furnaces: Connect Type B vents to furnace vent connection and extend outdoors. Type B vents and their installation requirements are specified in Section 235123 "Gas Vents."

D. Vent and Outside-Air Connection, Condensing, Gas-Fired Furnaces: Connect plastic piping vent material to furnace connections and extend outdoors. Terminate vent outdoors with a cap and in an arrangement that will protect against entry of birds, insects, and dirt.

1. Ream ends of pipes and tubes and remove burrs. Bevel plain ends of steel pipe.

2. Remove scale, slag, dirt, and debris from inside and outside of pipe and fittings before assembly.

http://www.specagent.com/Lookup?ulid=9880 http://www.specagent.com/Lookup?uid=123456985738 http://www.specagent.com/Lookup?uid=123456985739

3. Plastic Piping Solvent-Cement Joints: Clean and dry joining surfaces. Join pipe and fittings according to the following:

a. Comply with ASTM F 402 for safe-handling practice of cleaners, primers, and solvent cements.

b. CPVC Piping: Join according to ASTM D 2846/D 2846M, Appendix.

c. PVC Pressure Piping: Join schedule number ASTM D 1785 PVC pipe and PVC socket fittings according to ASTM D 2672. Join other-than-schedule-number PVC pipe and socket fittings according to ASTM D 2855.

d. Requirements for Low-Emitting Materials:

1) CPVC solvent cement shall have a VOC content of 490 g/L or less.

2) PVC solvent cement shall have a VOC content of 510 g/L or less.

3) Adhesive primer shall have a VOC content of 550 g/L or less.

4) Solvent cement and adhesive primer shall comply with the testing and product requirements of the California Department of Public Health's (formerly, the California Department of Health Services') "Standard Method for the Testing and Evaluation of Volatile Organic Chemical Emissions from Indoor Sources Using Environmental Chambers."

4. Slope pipe vent back to furnace or to outside terminal.

E. Connect ducts to furnace with flexible connector. Comply with requirements in Section 233300 "Air Duct Accessories."

3.3 FIELD QUALITY CONTROL

A. Perform the following tests and inspections:

1. Perform electrical test and visual and mechanical inspection.

2. Leak Test: After installation, charge systems with refrigerant and test for leaks. Repair leaks, replace lost refrigerant, and retest until no leaks exist.

3. Operational Test: After electrical circuitry has been energized, start units to confirm proper operation, product capability, and compliance with requirements.

4. Verify that fan wheel is rotating in the correct direction and is not vibrating or binding.

5. Test and adjust controls and safeties. Replace damaged and malfunctioning controls and equipment.

B. Verify that vibration isolation and flexible connections properly dampen vibration transmission to structure.

END OF SECTION 235416.13

OCTOBER 2025