Navien NCB-180 - Combi Boiler - 14k-150k BTU in - 93.5% AFUE - Nat Gas or LP

• Can use natural gas or propane gas
• ½ " Gas Pipe Capable Up to 24'
• Field Convertible Gas System
• Dual Stainless Steel Heat Exchangers
• 93.5% AFUE
• SCH 40, 2" PVC Venting up to 60'
• Integrated control

Application: Indoor; Gas Type: NG/LP; Min. BtuH Input: 14,000; Max. BtuH Input: 150,000; Hot Water @ 35°F Rise Capacity: 4.0 GPM; Hot Water @ 70°F Rise Capacity: 3.4 GPM; Width: 17"; Height: 28"; Depth: 12"; Wt. Lbs.: 84;

• Super condensing efficiency
• Dual stainless steel heat exchangers
• SCH40, 2” PVC venting up to 60’
• ½” Gas pipe up to 24’
• Automatic water filling system
• integrated controls

• Data Field NCB-180 Gas Input Space Heating 14,000-80,000 BTU/H Domestic Hot Water 14,000-150,000 BTU/H AFUE 95.0% Flow Rate (DHW) 77°F (43°C) Temp Rise 3.4 GPM (12.9 L/m) Dimensions 17"(W) x 28"(H) x 12"(D) Weight 74 lbs (34kg) Installation Type Indoor Wall-Hung Venting Type Forced Draft Direct Vent Ignition Electronic Ignition Water Pressure (Hydronic/DHW) 12-30 PSI / 15-150 PSI Natural Gas Supply Pressure (from source) 3.5"-10.5" WC Propane Gas Supply Pressure (from source) 8.0"-13.5" WC Natural Gas Manifold Pressure (min to max) -0.07" WC to -0.66” WC Propane Gas Manifold Pressure (min to max) -0.06" WC to -0.62" WC Minimum Flow Rate (DHW) 0.5 GPM (1.9 L/m) Connection Sizes Heating Supply/Return 1" NPT DHW Inlet/Outlet 3/4" NPT Gas Inlet 3/4" NPT Auto Feeder 1/2" NPT Condensate Outlet 1/2" NPT Power Supply Main Supply 120V AC, 60Hz Maximum Power Consumption 200W (up to 2 amperes) Materials Casing Cold Rolled Carbon Steel Heat Exchangers Primary/Secondary Heat Exchanger: Stainless Steel DHW Heat Exchanger: Stainless Steel Venting Exhaust 2” or 3" PVC, CPVC, Polypropylene 2” or 3" Special Gas Vent Type BH (Class II, A/B/C) Intake 2” or 3" PVC, CPVC, Polypropylene 2” or 3" Special Gas Vent Type BH (Class II, A/B/C) Vent Clearances 0" to Combustibles Safety Devices Flame Rod, APS, Gas Valve Operation Detector, Ignition Operation Detector, Water Temperature High Limit Switch, Exhaust Temperature High Limit Sensor