
Gas Tankless Water Heater: High Efficiency, Indoor/Outdoor, Natural Gas, 225,000 BTU, 12.1 gpm
Gas Tankless Water Heater: High Efficiency, Indoor/Outdoor, Natural Gas, 225,000 BTU, 12.1 gpm Item 6FZP4 Mfr. Model C 1210 ESC NG Brand BOSCH Sub-brand Bosch Therm Manufacturer Part Number C 1210 ESC NG Condensing Yes Energy Factor 0.94 Fuel Type Natural Gas Ignition Type Electronic Low NOx Yes Manufacturer Warranty Length 1 yr Parts Labor; 5 yr All Other Parts; 5 yr Heat Exchanger Minimum Flow Activation 0.5 gpm Maximum Heating Capacity 225,000 BTU/ft/sq ft/hr/° F Overall Depth 11.25 in Overall Height 30.5 in Overall Width 17.88 in Standards ASME; NSF Environment Indoor; Outdoor Market Commercial Gas Inlet Size 3/4 in Water Inlet Size 3/4 in Maximum Delivered Temperature 180 °F Minimum Delivered Temperature 100 °F Maximum Flow Rate 12.1 gpm Maximum Water Pressure 150 psi Vent Type Direct Vent Operating Voltage 120V AC Vent Connection Size 3 in; 4 in Mounting Type Wall Mounting Includes Pressure Relief Valve; Wall Mounting Bracket Minimum Heating Capacity 25,000 BTU/ft/sq ft/hr/° F Features Built in Freeze Protection; Direct Vent; Recirculation Minimum Water Pressure 30 psi Gas Inlet Type NPT Cold Inlet Type NPT Thermal Efficiency 98 % UNSPSC 40101825 Country of Origin Portugal High-efficiency (HE) water heaters include a secondary heat exchanger that maximizes the heat transfer process to extract as much heat energy (Btus) as possible without a lot of waste. These gas water heaters are rated for indoor use and extract heat energy out of the exhaust gases to heat the water. HE commercial gas water heaters have higher thermal efficiency ratings than standard water heaters.