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CH - 199,900 BTU - Hot Water Combi Boiler - NG - 91% AFUE - Direct Vent print

CH - 199,900 BTU - Hot Water Combi Boiler - NG - 91% AFUE - Direct Vent

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Product Specifications
General Data
Product LineCH
Fuel SourceNatural Gas
Vent TypeDirect Vent
DHW ProductionYes
Storage TypeTankless
Installation LocationIndoor
Gas Conversion KitNot Convertible
Performance Data
Maximum Input Capacity (BTU)199,900
Minimum Input Capacity (BTU)20,000
Minimum Flow Rate (GPM)0.5
Electrical Data
Voltage (Volts)120
Frequency (Hertz)60
Primary Vent Pipe Diameter (Inches)3
Gas Connection Size (Inches)3/4
Cold Water Inlet (Inches)3/4
Hot Water Outlet (Inches)3/4
Supply Connection (Inches)1
Return Connection (Inches)1
Product Height (Inches)28
Product Width (Inches)17
Product Depth (Inches)12
Product Weight (Pounds)84
Parts Warranty (Years)5
Heat Exchanger Warranty (Years)10
Energy Star ListedYes
CSA ListedYes
ASME CertifiedYes
Discontinued - Call for Availability
BBB Accredited
Amazon Payments Certified
Paypal Verified
Norton Secured
Satisfaction Guaranteed
It's important to us that you are satisfied with our products. In case you need to return a product, you may do so within 30 days of your order's delivery, often without a restocking fee. We've worked really hard to make the return experience as easy as possible. How did we do it? We put it online! More
Attention: This model has been discontinued by Navien. It has been replaced by NCB - 199,000 BTU - Hot Water Combi Boiler - 93.3% AFUE - Direct Vent. Please call us at 866-554-4328 to check availability prior to checking out.
Navien - CH-240-ASME-NG - 199,900 BTU - Hot Water Dual Purpose Boiler and Water Heater - Natural Gas - 91% AFUE - Direct Vent - DHW Production of 4.5 GPM at a 77F Temperature Rise
Product Overview

Navien has been pushing the boundaries of efficiency for 25 years. The CH-240-ASME-NG is a result of their dedication to providing an effective and green combi boiler. With a CH-240-ASME-NG, all of your space heating and domestic hot water needs are satisfied by a single product, saving you space and streamlining your heating operations. The CH-240-ASME-NG and all Navien models utilize condensing technology which captures additional heat lost by typical combi boilers. The Navien CH-240-ASME-NG's energy factor is superior to both traditional boilers and noncondensing combi boilers. Reduced vent temperatures due to this condensing technology allow you to use PVC venting, which saves you money and contributes to the ease of installation. The Navien CH-240-ASME-NG has excellent technology for reducing your heating costs and carbon footprint.

Product Features

Adapts to Your Home
The Navien CH-240-ASME-NG has an ASA Control System with a built-in thermostat that preserves the ideal temperature throughout your home. The ASA Control System keeps you comfortable by checking the temperature of your home against the temperature of return-water and making adjustments on the fly.

Help the Environment
The Navien CH-240-ASME-NG will reduce your home's impact on the environment. Eco Pre-mixed Burners reduce CO and NOx emissions by combining gas heating and air before ignition. The result is a nearly 75% reduction in polluting emissions. In fact, an installed Navien CH-240-ASME-NG reduces CO2 by the same amount as 31 cypress trees.

Incredible Efficiency
Navien products reduce energy consumption without sacrificing comfort. Their tankless models, such as this one, only heat water when you need it, reducing energy expenditure. Also, the CH-240-ASME-NG uses a secondary heat exchanger to transform condensation and exhaust into additional heat. This reduces the ventilation temperature and increases the energy factor. The CH-240-ASME-NG's efficiency translates directly into savings on operation costs for you!

Tremendous Durability
The Navien CH-240-ASME-NG uses stainless steel for the Eco Pre-mixed Burner and both heat exchangers. This prevents corrosion and increases the lifespan of your CH-240-ASME-NG. Navien is so confident in the quality of their product that they offer a 10 year warranty on the CH-240-ASME-NG's heat exchanger.

A Product You Can Trust
Navien Products are recognized by an array of organizations. The CH-240-ASME-NG is certified by Energy Star, the Canadian Standards Association, and the American Society of Mechanical Engineers.

Product Includes
  • (1) Remote Controller
  • (1) Wall Mounting Bracket
  • (4) Tapping Screw & Anchor
  • (2) Vent Terminator
  • (4) Wall Flange
  • (3) Pressure Reducing Valve Kit
  • (1) Condensate Drain Hose
Product Accessories
Fill-Trol - 7.4 Gallon - Expasion Tank & Fill Valve
Amtrol - FT-111 - 7.4 Gallon - Expansion Tank & Fill Valve - 1/2" NPT Connection - 2.5 Gallons Max Acceptance

CH - Remote Controller NR-10P
Navien - NARC1GSNR037 - Remote Controller NR-10P - For CH Series Combi Boilers

Ready-Link Communication Cable
Navien - BCRA1129 - Ready-Link Communication Cable - For NR, NCB and NPE Series Tankless Water Heaters and CH Series Combi Boilers

CH - Combi Boiler Service Parts Kit
Navien - 30008289A - Combi Boiler Service Parts Kit - For CH Series Combi Boilers

CH - Motorized 3-Way Valve
Navien - AAVC9EX00018A - Motorized 3-Way Valve - For CH Series Combi Boilers

Main Gas Valve
Navien - BH0901018A - Main Gas Valve - For CH Series Combi Boilers and NR Series Tankless Water Heaters

CH - Auto Feed Valve Assembly
Navien - BH0951006A - Autofeed Valve Assembly - For CH Series Combi Boilers

CH - Ignition Transformer
Navien - BH1201045A - Ignition Transformer - For CH Series Combi Boilers

Navien - BH2206006A - Condensate Drain Hose - For CH, NCB Series Combi Boilers and NR Series Tankless Water Heaters

CH/NCB - Outdoor Reset Sensor
Navien - NASS9EXOS001 - Outdoor Reset Sensor - For CH & NCB Series Combi Boilers

Product Manuals

We're sorry, the manuals for this product are not available at the manufacturer's request.

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