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
ProTankless GWH 425 PN
 
Note: Specifications and product information subject to change without notice.