Specifications include, but are not limited to: The vendor shall provide and deliver energy-efficient Carbon Dioxide Heat Pump Water Heaters as indicated below. The water heaters must utilize carbon dioxide technology utilizing a separate outdoor rated heat pump and internal tank. All systems must be new, free of defects and damage, and carry a full manufacturer’s warranty. Sanden is the approved manufacturer. Any material substitution of equal or better quality must be pre-approved. Other requirements; Ambient operating range of minus 25 degrees F to 104 degrees F. Provide a ten-year heat pump parts warranty and three-year labor warranty. Operating Range: Hot water production down to minus 20 degrees F; 83-gallon tank – first hour delivery 115 gallons; 43-gallon tank – first hour delivery 71 gallons; Stainless Steel Tank with 15-year prorated warranty; Refrigerant shall be R744 (Carbon Dioxide). Nominal heating capacity 15,400 Btu/h. Maximum Pipe length 50 feet, maximum vertical separation 16 feet. Evaporator coils shall be mechanically bonded aluminum to copper tube. Fins shall be coated for corrosion resistance. Power requirements: 208/230v-1Ph-60Hz on a 15-amp breaker. 46 Sanden GS4-45HPC Heat Pump; 20 SAN-83-SSAQA 83 Gallon Tank; 12 SAN-43SSAQA 43 Gallon Tank; 32 ECO-FPVKT3540 Sanden Drain Down Valve Kit or pre-approved equal
