Navien CH240NG

CH-240-NG Combi Condensing Gas Water Heater/Boiler 91% - 199,000BTU

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Navien CH240NG

Navien CH-240-NG Combi Condensing Gas Water Heater/Boiler 91% - 199,000BTU
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Navien Products
Quick Specs:
Brand: Navien
Stock Id: SID269504
Venting Type: Direct Vent
Energy Star: No
Technical Details
Weight: 90 lbs.
Installation Type: Indoor / Outdoor Wall-Hung
Dimensions: 17Wx 28Hx 12D
Ignition: Electronic Ignition
Max: 199,000 Btu/h
Water Pressure (min-max): 15 - 150 PSI
Energy Factor (DOE): 0.91 / 0.96
Thermal Eciency: 91.0 %
Min: 20,000 Btu/h

With Navien CH-240-NG Condensing Combi Tankless Gas Water Heater and Boiler you get the best of both worlds: the Best Value and Ultra Condensing Efficiency which offers substantial savings and contributes to a green-friendly environment. Plus, the installation and venting processes are easy, cost effective, and Navien's products are simply the best in quality and performance.


  • Enhanced Safety with Dual Microprocessors.
  • Leak Detector
  • Air Intake Filter
  • Under-Floor Heating Systems.
  • Baseboard Heating
  • Radiator or Fan Heating
  • Air-Handler Hydro Heating Systems


Input Heat Capacity (Gas and LP):Min: 20,000 Btu/h, Max: 199,000 Btu/h
Flow Rate 45F/75F (Gas and LP):7.2 GPM/4.2 GPM
Thermal Eciency:91.0 %
Energy Factor (DOE):0.91 / 0.96
Dimensions (W x H x D):17x 28x 12
Weight :90 lbs
Installation Type:Indoor / Outdoor Wall-Hung
Venting Type:Direct Vent
Ignition:Electronic Ignition
Water Pressure (min-max):15 - 150 PSI
Gas Supply Pressure (from source; min-max):NG: 3.75 WC ~ 10.5WC / LP: 8 WC ~ 13.5 WC
Minimum Flow Rate to activate Water Heater:For A Model 0 GPM (no minimum ow rate requirement), Otherwise 0.5 GPM
Connection Sizes:3/4 NP for Cold Water Inlet, Hot Water Inlet and Gas Inlet
Heating Connection Sizes:1" NP for Cold Water Inlet, Hot Water Inlet
Power Supply:120VAC, 60Hz 200W (max 2A)
Primary and Condensing Heat Exchanger Material:Stainless Steel
Exhaust Venting:PVC, Navien Stainless Steel or Special Gas Vent Type BH Class IIA (PVC) in Canada
Intake Venting:PVC, Flex Aluminum, Flex Stainless Steel, ABS
Recilculating:Yes (A Models)
Warranty:10 Years Heat Exchanger / 5 Years Parts

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