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Bosch WR430-3KV On Demand DHW Heater Page
This unit comes with a built in, Whisper Quiet Power Venter - maximum of 15ft with two elbows run in C vent. Comes with extension terminal complete with anti-back draft flapper. Also comes with 36" power cable and plug. Suitable for same applications as other WR Bosch models. Flow controlled, this modulating unit combines high efficiency with high output, plus low minimum flow rate. Output temperature may be preset to any level between 90F and 140F and the selected temperature will be maintained indefinitely (plus or minus 5F). This unit is suitable for single family residential or commercial/industrial applications.
Who Should Own One?
Technical Specifications:
Fuel Types Available: Natural Gas, Propane
Rated Input (BTU/hr.): 125,000 / 130,000
Minimum Input (BTU/hr.): 28,000
Thermal Efficiency/Energy Factor: 82% / .78
Fuel Consumption: 30.6 to 121 (CuF/hr) NG /
1.5 to 5.8 (lbs/hr) LP
Ignition Type: electronic
Max flow rate at 45F temp rise (GPM)  
Max flow rate at 100F temp rise (GPM)     
Minimum Flow Rate (GPM) 0.5
Dimensions 30 5/16" x 18-1/4" x 8 3/4"
Shipping Weight 45 lbs.
Flue Size 4" Power Vent
Water Inlet & Outlet (NPT) 1/2 inch
Gas Inlet (NPT) 1/2 inch
Water Pressure Range 13 - 150 psi
Inlet Pressure Required 11 inches W.C. LP /
7 inches W.C. NG
NG & LP On Demand Boilers Natural Gas & Propane On Demand Boilers & DHW Heaters
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No Utility Bills Inc. All rights reserved. Last modified: 10/19/24