Requirements Template Sula Mens Bunkhouse HVAC Retrofit 20240723.docx

US Department of Agriculture (USDA)

Statement of Work

SULA MENS BUNKHOUSE HVAC RETROFIT

Contents

Project

SULA MENS BUNKHOUSE HVAC RETROFIT

General Information

1.0 Scope of Work

This project replaces the existing hydronic heating system in the Sula Men’s Bunkhouse with an energy efficient variable refrigerant flow heating system.

Contractor Requirements

2.0 Technical Requirements / Tasks

This project is located in the Sula Men’s Bunkhouse at the Sula Work Center. This 1,134 SF bunkhouse is currently heated with a hydronic heating system existing of a boiler and approximately 145 LF of baseboard convectors, 45 LF of overhead convectors, and one unit heater. This existing heating system, including all piping, convectors, boiler, pumps, electrical, and supports, will be removed and disposed of off National Forest System lands. This does not include any piping or water heaters required for the domestic hot water heating system.

A new heat pump heating system will be installed. This system is comprised of one exterior 48k BTU unit combined with a single indoor air handler and venting to condition the dormitory area of the building. Another exterior 48k BTU unit combined with two indoor units, one in the dinning/kitchen area and one in the lounge area.

Each exterior unit shall be protected with a Thermally Protected Metal Oxide Varistor (TPMOV) surge protection device. The surge protection device shall meet the requirements below. Exterior units shall sit on minimum 6” stands.

System 1 – Dormitory Area: Installation of a 48K BTU Outdoor unit paired with a wall mount 48k BTU air handler. This unit to serve the dormitory area of the bunkhouse with a air handler and ductwork system. Unit to be controlled with a digital wall mount thermostat. Unit functions for heating and air conditioning. Successful bidder shall submit ductwork and cold air return design and calculations to CO for approval. This shall include ductwork type and sizing, damper grill type, cold air return grill and filter).

System 2 - Dinning/Kitchen and Lounge: Installation of a 48K BTU Outdoor unit paired with two indoor wall mount units. First indoor system will be a 24K BTU wall mounted unit serving the dining room and kitchen area. Second indoor unit will be a 18K BTU wall unit serving the lounge area. Units to be controlled by digital wall mount thermostats.

Outdoor Unit Requirements Nominal Cooling Capacity (BTU/h (kW): 48,000 Nominal Heating Capacity (BTU/h (kW): 54,000 Nominal Tonage (Tons): 4 Refrigerant Type: R410A Airflow Rate (CFM): 2,590 Maximum Connectable Indoor Units: 12 Outdoor Operating Temp Range Cooling (F): 23-115 Outdoor Operating Temp Range Heating (F): -15-70 Code Certified: AHRI Standard 210/240, ETL 3170288

Air Handler Unit (Dormitory):

Nominal Cooling Capacity (BTU/h (kW): 48,000 Nominal Heating Capacity (BTU/h (kW): 54,000 Static Pressure Range (in.WG)” 0.4 to 1.00 Standard Static Pressure (in.WG): 0.4 Airflow Rate Range (CFM): 1,354 to 1,766 Power Source: 208/230 V, 1-Phase, 60Hz Sound Pressure Level (dB(A)): 40/43/37 Operating Temp Range Cooling (F): 64-90 Operating Temp Range Heating (F): -15-70 Code Certified: ETL 91987

Indoor Wall Mounted Unit Requirements (Dining/Kitchen):

Nominal Cooling Capacity (BTU/h (kW): 24,000 Nominal Heating Capacity (BTU/h (kW): 27,000 Airflow Rate Range (CFM): 400 to 600 Power Source: 208/230 V, 1-Phase, 60Hz Sound Pressure Level (dB(A)): 37/42/47 Operating Temp Range Cooling (F): 64-90 Operating Temp Range Heating (F): 50-86 Code Certified: ETL 91987

Indoor Wall Mounted Unit Requirements (Lounge):

Nominal Cooling Capacity (BTU/h (kW): 18,000 Nominal Heating Capacity (BTU/h (kW): 20,000 Airflow Rate Range (CFM): 330 to 600 Power Source: 208/230 V, 1-Phase, 60Hz Sound Pressure Level (dB(A)): 35/39/46 Operating Temp Range Cooling (F): 64-90 Operating Temp Range Heating (F): 50-86 Code Certified: ETL 91987

Surge Protection Devices Modes of Protection: 3 (L1-N, L2-N, L1-L2) Short Circuit Current Rating: 100 kA Nominal Discharge Current: 20 kA Maximum Surge Current Rating Per Phase: 50 kA Surge Protection Technology: TPMOV Maximum Continuous Operating Voltage (L-G): 150 Maximum Continuous Operating Voltage (L-L): 300 Maximum Continuous Operating Voltage (L1-N/G) 150 Voltage Protection Rating (L-L): 1200 Voltage Protection Rating (L1-N/G): 700 Phase: Single

System installation includes the demolition/removal of the existing hydronic heating system, all equipment, controls, refrigerant piping, ductwork as needed for adequate coverage of the dormitory and restrooms, miscellaneous installation materials, electrical as needed (including breakers), and all labor for the complete installation.

All work shall be completed in a professional and workmanship like manner to current codes. Condensate drain lines shall slope to drain to the exterior. All line sets shall be covered with line hide that can be painted.

Concrete pads shall be government furnished.

Work to be performed under current Davis-Bacon/Prevailing wage labor rates, with installation performed to industry standard.

(b) - Project Location. This project is located at the Sula Work Center, 7338 Highway 93 South, Sula, MT, 59871. Sula is approximately 85 miles south of Missoula, MT

3.0 Government Furnished

Government furnished: Install 3-ft x 5-ft concrete slabs

4.0 Deliverables / Schedule

Period of Performance: October 1 through November 30, 2024

5.0 Drawings

The following drawings are part of this solicitation and any resulting contract:

SULA MENS BUNKHOUSE HVAC RETROFIT DRAWINGS Updated 20240723.pdf

Attachment See attached “Proposal Evaluation Criteria” for evaluation factors and significant Subfactors representing the key area of importance and emphasis to be considered in the source selection decision.

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