©Navien America Inc. 2010 CH series service Manual18Version 1.03. Technical Data3.1. General SpecificationsItem CH-180 CH-210 CH-240,CH-240 ASMEHeat Capacity(Input)Heat Capacity(Input)DimensionsWeightInstallation TypeVenting TypeIgnitionDomestic Water Pressure(min-max)Heating Water Pressure(min-max)Efficiency AFUEGas SupplyPressureManifold GasPressureMin.Max.Minimum Flow RateConnection SizesHeatingSupply/Return1” NPT 3/4” NPT 1/2” NPT 3/4” NPT98 ~ 140ı (37 ~ 60ç)98 ~ 185ı (37 ~ 85ç)TemperatureRange (R/C)Safety DevicesFlame Rod, Overheat Cut-off Device, Ignition Operation Detector,Water Temperature High Limit Switch,Exhaust Temperature High Limit SwitchPlumb Easy Valve Set, Outdoor Sensor, Pressure Relief Valve,Condensate Neutralizer, Communication CableAccessoriesDHWSpaceHeatingDHWInlet/Outlet Auto feeder Gas Supply0.5 GPMNG: 0.4” W.CNG: 3.7” W.CNG: 0.4” W.CNG: 3.0” W.CNG: 0.6” W.CNG: 4.0” W.CMin. ~ Max.Natural Gas35°F Rise45°F Rise77°F Rise8.3 Gal/m6.5 Gal/m3.8 Gal/m10.0 Gal/m7.7 Gal/m4.6 Gal/mW17” x H27”x D12”74 lbs 84 lbsIndoor / Outdoor Wall-HungForced Draft Direct VentElectronic Ignition15 ~ 150 Psi7.0 ~ 30 Psi91%6.0”~10.5” W.C11 Gal/m8.6 Gal/m5.1 Gal/mMin: 17,000 Btu/hMax: 150,000 Btu/hMin: 20,000 Btu/hMax: 175,000 Btu/hMin: 20,000 Btu/hMax: 199,000 Btu/h