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CH-180ASME Gas Boiler

ASMEList gas boiler

Max Input : 150,000 BTU/H
Indoor/Outdoor Installation

  • Super condensing efficiency
  • Dual stainless steel heat exchangers
  • Low NOx emissions (s20ppm)
  • SCH 40, 3” PVC venting up to 100’
  • Gas-Air Ratio Control
  • Automatic water filling system
  • Remote controller included


Superb Condensing Efficiency & PVC Venting

  • Equipped with dual stainless steel heat exchangers.
  • Offers a low cost PVC venting solution for fast, simplified installation.
  • PVC venting up to 100 feet with a maximum of six elbows (each elbow deduct 5′ off of venting length).

Where Technology Meets Ecology, Combination Boiler

  • The ideal solution for customers who need both domestic hot water and a space heating application.
  • Heats water when needed, making it environmentally sound as well as cost efficient.

Hydronic Heating Benefits

  • Clean: little chance to cause dust or lower humidity because there is no air movement.
  • Silent: offers silent heating because no blowers are needed for forced circulation.
  • Comfort: keeps floors warm but indoor air fresh, making people feel warm and comfortable.
  • Coverage: radiant heat makes heating from floor to ceiling possible.
  • Economical: radiant heat in the floors can transmit warmth throughout the house hours after turning off the heater.

Extended Life, Stainless Steel Heat Exchanger

  • Integrated primary and secondary heat exchangers prevent corrosion.
  • Ensures a longer life expectancy over copper heat exchangers.
  • Stainless steel components maintain consistency, even during long period of use.

Eco-friendly, Premixed Burner

  • Modulates both air and gas ratios required for optimal combustion.
  • The ingenious built-in CO monitoring system will shut the Combi unit down in the event of excessive CO gases build up that can cause a hazardous condition.

Leak Detector

  • Prevents damages to water heaters as well as personal property.


Data Field CH-180ASME
Heat Capacity (Input) Min : 17,000 Btu/hr Max: 150,000 Btu/hr
Flow Rate(DHW) 45°F Rise 6.2 GPM
77°F Rise 3.6 GPM
Dimensions 17” × 28” × 12”
CAFUE Natural Gas .92
Propane Gas .90
Weight 74 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


Heat Exchanger:  10 years
Other Parts and Components:  5 years