ProTankless GWH 425 PN
Bosch ProTankless GWH 425 PN
 
   Bosch GWH 425 PN

425pn_inside.gifStanding pilot, no electricity required for the GWH 425 PN model.

  • Standing pilot ignition
  • 78% average efficiency
  • Endless hot water for one major application at a time
  • 5˝ double-wall type B vent – Natural draft
  • Modulating gas valve ensures constant temperature at varying flow rates
  • Pressure relief valve included Available in natural gas (NG) or liquid propane (LP)
  • 15-year warranty
   
   Technical Specifications
  GWH 425 PN
Power Input NG: 31,000-117,000 Btu
LP: 31,000-117,000 Btu
Minimum Flow to Activate (gpm) 0.5 gallons per minute (gpm)
Flow Rates 90° F rise / 2.1 gpm
77° 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: .69
LP: .79
Thermal Efficiency NG: 78%
LP: 78%
Dimensions H: 22¾" W: 16¾" D: 8½"
Weight 33 lbs.
Modulating Gas Valve Yes
Ignition Standing Pilot
Optional Accessory Power vent for horizontal venting (AQ4)

 

Installation Specifications
Gas Connection ¾" Male NPT
Water Connections ½" Male NPT
NG Gas Pressure Minimum: 7" WC
Maximum: 14" WC
LP Gas Pressure Minimum: 11" WC
Maximum: 14" WC
Water Pressure Minimum: 30 PSI
Maximum: 150 PSI
NOTE: Not approved for use in mobile homes, boats, or RVs. Specifications and product information subject to change without notice.
   
GWH 425 PN
Bosch GWH 425 PN
 
Note: Specifications and product information subject to change without notice.