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  Navien CH-240ASME 199k BTU/hr Combi Boiler
Navien CH-240ASME 199k BTU/hr Combi Boiler
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Navien CH-240ASME 199k BTU/hr Combi Boiler

With Navien Condensing, 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. Both domestic and spaceheating in one compact package.


  • Super condensing efficiency
  • Dual stainless steel heat exchangers
  • Low NOx emissions (≤20ppm)
  • SCH 40, 3” PVC venting up to 100’
  • Gas-Air Ratio Control
  • Automatic water filling system
  • Remote controller included
  • 10 Year Heat Exchanger Warranty

For more information see


Data Field CH-240ASME
Heat Capacity (Input) Min : 20,000 Btu/hr Max :199,900 Btu/hr
Flow Rate(DHW) 77⁰F Rise 4.5 GPM
Dimensions 17” × 28” × 12”
CAAFUE Natural Gas 91%
Propane Gas 91%
Weight 84 lbs
Installation Type Indoor / Outdoor Wall-Hung
Venting Type Direct Vent
Ignition Electronic Ignition
DHW Pressure (min-max) 15 - 150 PSI
Heating Pressure (min-max) 7 - 30 PSI
Gas Supply Pressure (from source : min-max) Natural Gas 5.5”W.C. ~ 10.5”W.C.
Propane Gas 10.5”W.C. ~ 13.5”W.C.
Minimum Flow Rate(DHW) 0.5 GPM
Connection Sizes Heating Supply / Return 1” NPT
DHW Inlet / Outlet 3/4” NPT
Auto Feeder 1/2” NPT
Gas Inlet 3/4” NPT
Power Supply Main Supply 120VAC, 200W (max 2A)
Heat Exchangers Primary Heat Exchanger : Stainless Steel Condensing Heat Exchanger : Stainless Steel
Venting (o" Clearance) Exhaust (¢3") SCH 40 3" PVC, SCH 40 3" Polypropylene, SCH 80 3" CPVC
Intake (¢3") PVC, Flex Aluminum, Flex Stainless Steel, ABS

Part Number: CH-240ASME

Price: $2,520.00

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