GWH 425 HNO Technical Support
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Technical Specifications
Power Input NG: 28,000 - 117,000 Btu
LP: 28,000 - 117,000 Btu
Minimum Flow
Rate to Activate
0.5 gallons per minute (gpm)
Flow Rates 90° F rise / 2.1 gpm
75° F rise / 2.4 gpm
65° F rise / 2.9 gpm
55° F rise / 3.4 gpm
45° F rise / 4.2 gpm
Energy Factor NG: .85
LP: .84
Thermal Efficiency NG: 80%
LP: 83%
Dimensions 29¾"h x 18¼'w x 8¾”d
Weight 40 lbs.
Ignition Hydro-generated
Accessories Power Vent Kit - AQ1
Modulating Gas Valve Yes
Life Expectancy 20+ years
Installation Specifications
Gas Connection ½" Male NPT
Water Connection ½" Male NPT

NG Gas Pressure

LP Gas Pressure

Minimum: 7" WC
Maximum: 14 " WC
Minimum: 11" WC
Maximum: 14" WC
Water Pressure Minimum: 30 PSI
Maximum: 150 PSI
Electrical Supply None

   
GWH 425 HNO
GWH 425 HNO
Technical Support
 
Note: Specifications and product information subject to change without notice.