Atch 2 SOW AG Dwelling W_New HVAC 012721.docx

STATEMENT OF WORK

MYSTIC RANGER DISTRICT: ALLEN GULCH DWELLING WEST

INSTALL HEAT PUMP AND ELECTRIC FURNACE

1. LOCATION AND DESCRIPTION OF WORK:

All of the work related to this contract is located on the Black Hills National Forest and includes the following:

A. Allen Gulch West Dwelling: Located at 425 Maggie Load Road, Hill City, South Dakota, the Allen Gulch West dwelling consists of 2 levels and is approximately 1884 total square feet is size. Work at this location shall include installation of a 4-ton heat pump system and fan coil unit w/auxiliary electric resistance heat and includes installation of lineset to outdoor unit, connecting to existing duct system and installing new duct runs to basement bedrooms and to existing main floor registers, removal and disposal of existing wood burning heating unit, removal and disposal of existing electrical radiant heaters, installation of new thermostats, all required electrical work, and providing and installing new wall and floor grilles. The following Section provides details for equipment and installation requirements. The Contractor is responsible for determining actual quantities of materials and mechanical requirements.

SECTION 235300

SPLIT SYSTEM HEAT PUMPS

PART 1 - GENERAL

1.

1.1 SUMMARY

A. This Section includes the following:

1. Fan coil with electric coils, heat pump indoor section, and accessories complete with controls.

2. Heat pump outdoor section.

3. Refrigerant piping.

4. Condensate Pump.

5. Ductwork.

1.2 SUBMITTALS

1. Product Data: Include rated capacities of selected models, furnished specialties, and accessories for each furnace. Include plan and elevation views of units, minimum clearances, and data on ratings and capacities.

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

B. Closeout Submittals:

1. Operation and maintenance data.

2. Warranty.

1.3 QUALITY ASSURANCE

A. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, Article 100, by a testing agency acceptable to authorities having jurisdic- tion, and marked for intended use.

B. Comply with UL 303, "Refrigeration and Air-Conditioning Condensing and Compres- sor Units."

C. Comply with NFPA 70.

PART 2 - PRODUCTS

2.

2.1 FAN COIL UNITS

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

1. Byant Heating and Cooling Systems

2. Carrier; Div. of United Technologies Corp.

3. Rheem Mfg. Co.; Air Conditioning Div.

4. Trane Company (The); North American Commercial Group.

B. Cabinet: Factory painted, steel cabinet with interior insulation. Meets 2% cabinet leakage rate when tested at 1.0 inches of static pressure

C. Interior Insulation: Mineral-fiber board thermal insulation manufactured with glass fibers a minimum of 1/2 inch thick, bonded with a thermosetting resin. Comply with ASTM C 612, Type IB, with aluminum foil jacket.

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

E. Fan Motors: Electronically commuting motor (ECM).

F. Electric Heaters: 20kw. Provide with fuse or circuit breaker internal protection.

G. Filters: 1-inch-thick, cleanable media type.

H. Refrigerant: Puron, chlorine-free, non-ozone depleting.

I. Refrigerant Valve: Thermostatic expansion valve (TXV).

J. Refrigerant Coil: Copper tubes mechanically expanded into aluminum fins. Comply with ARI 210/240, "Unitary Air-Conditioning and Air-Source Heat Pump Equipment." Match remote condensing unit with type, capacity, and pressure-drop ratings.

K. Condensate Control: Polycarbonate resin condensate drain pan with primary and secondary drain connections.

2.2 HEAT PUMP UNITS

A. Description: Energy Star compliant, factory assembled and tested, outdoor-mounted, air-cooled, split-system heat pump unit; consisting of hermetic compressor, air-cooled coil, propeller-type condenser fan, motors, refrigerant reservoirs, and operating controls.

1. Heat pump shall have a minimum 14.0 SEER for cooling and 8.2 HSPF for heating.

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

1. Carrier Corp.; Carrier Air Conditioning Div.

2. Rheem Mfg. Co.; Air Conditioning Div.

3. Trane Co. (The); North American Commercial Group.

C. Cabinet: Galvanized steel with powder coat paint.

D. Compressor: Hermetically sealed and isolated for vibration.

E. Condenser: Air-cooled, copper-tube with aluminum fins mechanically bonded to cop- per tubes.

F. Condenser Fan: Statically and dynamically balanced, direct-drive, aluminum propel- ler fan, with totally enclosed motor and permanently lubricated bearings.

G. Refrigeration Components: Include liquid- line and vapor line shutoff valves with sweat connections, filter dryer, system charge with Puron R-410A refrigerant, POE compressor oil, accumulator and reversing valve.

H. Verification of Performance: Rate condensing units according to ARI 210/240.

I. Provide with the following accessories:

1. Crankcase heater

2. Sound hood to reduce sound level by 2 dBA.

3. Concrete pad

4. Snow stand to support units 18 inches above the pad.

2.3 CONDENSATE PUMP

A. UL- listed, automatic condensate removal pump consisting of the following:

1. Mechanical and Electrical Characteristics: 70 gallons/hour at 5 foot head, 1/30 hp, 115V, 60 Hertz, 1.5 Amps. Provide with power cord.

2. Reservoir: High impact, corrosion resistant, ABS plastic tank with 1/2 gallon capacity.

3. Motor: Thermally protected, high torque with stainless steel motor sha ft.

4. Check valve: Built- in.

5. Auxiliary safety switch: Shut down the fan coil unit in the event of a pump overflow condition.

6. 3/8” OD barbed discharge connection.

7. Manufacturer: Little Giant model VCMA-20ULS Series or equal.

2.4 REFRIGERANT PIPING

A. Precharged and insulated annealed-copper liquid and suction tubing, factory cleaned, dried, pressurized, and sealed.

B. Insulation Protective Finish: Water-based, white, latex enamel paint. WB Armaflex Finish by Armstrong World Industries or equal.

2.5 THERMOSTAT

A. 24 VAC, solid-state, programmable thermostat with multiple temperature settings selectable by day and time and battery back- up protection.

2.6 DUCTWORK

A. Comply with SMACNA's "HVAC Duct Construction Standards-Metal and Flexible" for acceptable materials, material thicknesses, and duct construction methods. Sheet metal materials shall be free of pitting, seam marks, roller marks, stains, discolorations, and other imperfections.

B. Galvanized Sheet Steel: Lock-forming quality; complying with ASTM A 653/A 653M and having G90 coating designation.

C. Round Ductwork: Longitudinal or spiral seam.

D. Joint Sealer: UL listed, Class 1, flame spread 0, fuel contributed 0, smoke developed

0. Water based, nontoxic, noncombustible, and nonflammable.

E. Hangers: Galvanized sheet steel or threaded steel rod. Comply with SMACNA's "HVAC Duct Construction Standards--Metal and Flexible" for steel sheet width and thickness and for steel rod diameters.

F. Duct Attachments: Sheet metal screws, blind rivets, or self- tapping metal screws; compatible with duct materials.

2.7 FLEXIBLE CONNECTORS

A. Glass fabric, double coated with neoprene, flame-retardant or noncombustible fabrics, coatings, and adhesives complying with UL 181, Class 1.

1. Minimum Weight: 26 oz./sq. yd.

2. Tensile Strength: 480 lbf/inch in the warp and 360 lbf/inch in the filling.

3. Service Temperature: Minus 40 to plus 200 deg F.

2.8 REGISTERS AND GRILLES

A. Pressure drops of return grilles shall not exceed 0.05-inch w.g. for air flow shown.

1. Material: Steel.

2. Finish: Baked enamel. Color to be determined by CO form manufacturer’s range of colors.

B. Wall Grilles (G-1 and G-3):

1. Material: Steel.

2. Finish: Baked enamel, white.

3. Blade Arrangement: Horizontal spaced 1/2-inch apart.

4. Deflection: 35 degrees.

2.9 SEALANT FOR WET OR DAMP ENVIRONMENTS

A. Paintable, elastoplastic, polycarbonate sealant material, 1200% elongation, 350% stretch, UV resistant, and suitable for temperatures ranging from -70oF to 222oF. Pro- seal 34 by Pro-seal Products, Inc. or equal.

PART 3 - EXECUTION

3.

3.1 INSTALLATION

A. Install units in accordance with manufacturer’s recommendations and maintaining manufacturer's recommended clearances.

B. Install furnished field- mounted accessories.

C. Seal pipe penetrations through outside wall in accordance with sealant manufacturer’s instructions.

D. Controls: Install center line of thermostats 48 inches above finished floor.

E. Power and Control Wiring: Install power and control wiring as specified in Divi- sion 26 Sections.

F. Connect refrigerant piping to outdoor and indoor units; maintain required access to unit. Install furnished field- mounted accessories.

G. Apply two coats of insulation protective finish on refrigerant pipe insulation located outdoors.

H. Install condensate drain trap in accordance with manufacturer’s requirements.

3.2 CLEANING

A. After completing installation, clean filters and internally according to manufacturer's written instructions.

3.3 CONDENSATE PUMP INSTALLATION

A. Install condensate pump in accordance with manufacturer’s literature.

B. Wire safety shutoff to disable fan coil unit upon pump overflow condition.

3.4 CONNECTIONS

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

B. Install flexible connections at inlet and outlets of units.

3.5 DUCT INSTALLATION

A. Fabricate and install ducts, elbows, transitions, offsets, branch connections, and other construction according to SMACNA's "HVAC Duct Construction Standards-Metal and Flexible" and complying with requirements for metal thickness, reinforcing types and intervals, tie-rod applications, and joint types and intervals.

B. Install ductwork in concealed locations, except in mechanical room.

C. Install ducts with fewest possible joints.

D. Install fabricated fittings for changes in directions, size, and shape and for connections.

E. Install ducts vertically and horizontally and parallel and perpendicular to building lines; avoid diagonal runs.

F. Install ducts close to walls, overhead construction, columns, and other structural and permanent enclosure elements of building.

G. Static-Pressure Classes: Unless otherwise indicated, construct ducts according to the following:

1. Return and Exhaust Ducts (Negative Pressure): 1/2- inch w.g.

H. Support horizontal ducts within 24 inches of each elbow and within 48 inches of each branch intersection.

I. Comply with SMACNA's "HVAC Duct Construction Standards-Metal and Flexible" for branch, outlet and inlet, and terminal unit connections.

3.6 ADJUSTING

A. Adjust initial temperature set points.

B. Set controls for optimum heating and cooling performance and efficiency.

3.7 FIELD QUALITY CONTROL

A. Evacuation and Leak Testing:

1. Perform testing and evacuation in the presence of the Contracting Officer.

2. Evacuation and Testing Equipment: Two-stage high vacuum pump with clean oil, capable of pumping down to 0.50 millimeter of mercury (500 microns), and a closed end mercury manometer, thermocouple or thermistor vacuum gauges.

3. Connect pump to system with as large a diameter copper connecting line as feasible to monitor the vacuum evacuation range. Vacuum shall be brought to the range of dehydration at normal temperatures, 0.50 millimeter of mercury (500 microns), equivalent to 29.62 inches of mercury vacuum.

4. Evacuate refrigerant piping, condenser, and evaporator coil. Do not evacuate compressor. Evacuate system to 500 microns absolute pressure. Pressurize with refrigerant to 20 psi gauge. Check for leaks. Re-evacuate system to 500 microns and hold vacuum for a minimum of 6 hours. Pressurize to 30 psi gauge and check all joints for leaks with soap solution or electronic leak detector. Re- make all leaking joints and repeat system evacuation procedures, including leak testing.

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

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

C. Remove and replace malfunctioning units with new units and retest.

3.8 DEMONSTRATION

A. Provide 1/2 hour of operating instructions at each dwelling.

END OF SECTION

2. MEASUREMENT AND PAYMNET:

A. Measurement: All work 100% completed, in place and functional.

B. Payment: Payment shall be in full at agreed upon price in compensation for work completed including all labor, supplies, and incidentals required for completion of work.

3. HOURS OF OPERATION:

A. Normal Working Hours: The Service Provider shall observe the following schedule which determines normal and after normal working hours. Any work which falls outside the definition provided below shall be considered after normal working hours and approval required by the CO.

1. Normal operating hours for all the above-mentioned facilities is from 8:00 am to 5:00 pm Monday thru Friday.

4. GOVERNMENT FURNISHED MATERIALS:

There are no Government furnish materials included in this project.

5. PROTECTION AND DAMAGE OF EXISTING FACILITIES:

The Service Provider shall provide all labor, materials, equipment and signage necessary for the protection of said facilities, occupants, and general public. Damages due to work performed by or due to the negligence of the Service Provider shall be replaced/repaired to its original condition at no additional cost to the Government.

The Service Provider shall be responsible for installation and removal of any barricades or signage to protect the above.

6. SERVICE PROVIDER - FURNISHED ITEMS:

The Service Provider will furnish all equipment and materials necessary (except, as noted in paragraph 8 above, those furnished by the Government) to perform the tasks specified in this contract. All equipment used by the Service Provider shall meet all safety requirements of this contract. The Service Provider shall provide Material Safety Data Sheets on cleaners, fluids, refrigerate, etc. and shall be placed in a designated location as determined by the Contracting Officer.

7. SMOKING RESTRICTIONS:

There are no areas designated for smoking.

8. SAFETY, FIRE PREVENTION AND SECURITY:

A. Safety: All work performed by the Service Provider shall be in compliance with OSHA regulations and other appropriate industry safety standards and guidelines.

B. Fire Prevention: All chemical and combustible items shall be stored in proper containers. All trash shall be placed in the dumpsters.

C. Building Security: All exit doors shall remain closed and locked at all times unless the Service Provider’s employee is using the door and remains in sight of the door. Once the Service Provider has finished his work at any of the above locations, the area will be secured unless otherwise informed by the Contracting Officer.

The Government will issue keys to Service Provider employees as appropriate for each facility. All keys will be issued to individual employees and are not transferable. The Service Provider shall maintain records to ensure accountability of keys. The Service Provider shall ensure that keys issued to the Service Provider by the Government are not lost, misplaced, or used by unauthorized persons. Government keys shall not be duplicated by the Service Provider unless authorized by the Government and shall be returned to the Government before final payment is made.

9. SUBMITTALS:

A. Materials and Equipment - The Service Provider shall provide submittals on all materials and/or equipment that is being proposed for use and/or installation on FS facilities.

1. All items shall be installed or applied as per manufacturers recommendations.

B. Material Safety Data Sheets – The Service Provider shall provide a material safety data sheet for any item being stored on the premises or utilized in providing service on site.

10. SUSTAINABLE PRODUCTS:

The Contractor shall comply with Section 9002 of the Farm Security and Rural Investment Act of 2002 (FSRIA), Executive Order (EO) 13423, “Strengthening Federal Environmental, Energy, and Transportation Management,” and the Federal Acquisition Regulation to provide biobased products.

The Contractor shall utilize products and material made from biobased materials (e.g. biobased greases, biobased hydraulic fluids, biobased absorbents) to the maximum extent possible without jeopardizing the intended end use or detracting from the overall quality delivered to the end user. All supplies and materials shall be of a type and quality that conform to applicable Federal specifications and standards. All supplies and materials to be used in the performance of work described herein are subject to the approval of the Contracting Officer.

A. In the performance of this contract, the Contractor shall make maximum use of biobased oils and lubricants that are designated by the United States Department of Agriculture unless the product cannot be acquired:

1. Competitively within a time frame providing for compliance with the contract performance schedule;

2. Meeting contract performance requirements; or

3. At a reasonable price.

4. Information about this requirement and these products is available at http://sftool.gov/green-products/1/construction-materials B. The Federal Acquisition Regulation (FAR) requires Contractors to report the purchase of biobased products under service and construction contracts during the previous Government fiscal year (October 1 thru September 30) and to submit this report no later than:

1. October 31 of each year during contract performance; and

2. At the end of contract performance.

3. Information about this requirement is available at http://www.biopreferred.gov/FARReporting/FARReporting.xhtml C. Sustainable products identified for this solicitation: Some examples of products that may be used in this contract could be cleaners or refrigerants. If manufacturer’s recommendations are to not use biobased products on their equipment due to voiding of warranties or damage to equipment; this must be attached to your proposal.

11. CLEAN-UP AND DISPOSAL:

The Contractor is responsible for clean-up and disposal of all waste materials. Contractor shall clean-up debris at the completion of each days work. Disposal of debris shall be at an established Sanitary Landfill, with all permits and related costs of disposal being the responsibility of the Contractor. The Contractor shall not use existing on-site trash receptacles for disposal or interim storage of debris.

A. Final Clean-Up: Prior to final acceptance by the Government, the Contractor shall ensure all waste materials and/or debris have been removed from site and properly disposed of.