Introduction - Bradford White UPV75 Series Service Manual

Introduction

The new Bradford White URG2PV75H and ULG2PV75H water heaters are designed to provide
reliable performance with enhanced standard features. New design features include reliable spark to
pilot ignition system, enhanced diagnostics, simplified servicing, significantly quieter operation,
additional vent lengths, and Bradford White Defender Safety System ® (not available on all models).
Spark to Pilot Ignition System - Employing the spark to pilot ignition system promotes reliable and
consistent pilot and main burner ignitions to provide hot water on demand.
Integrated Immersion Thermostat/Gas Control Valve with LED - Developed for ease of
troubleshooting by providing simple diagnostic codes to pinpoint an installation or component
performance issue.
Powerful Blower - Will eliminate problems with difficult venting situations.
Quieter and Cooler Blower Operation - Blower noise is significantly reduced for both interior and
exterior environments. Cooler operation increases blower life by reducing bearing wear and noise.
Rugged Wiring Connections - Receptacle type connections promote error free wiring.
Increased Vent Lengths - Increased venting performance is achieved while maintaining Energy
Factor & FHR (not applicable on all models) performance.
The URG2PV75H and ULG2PV75H water heater uses a combustion system where flue gases are
combined with dilution air to reduce the flue gas temperature in the blower. The diluted flue gases
are evacuated to the exterior through low temperature vent materials. The gas control maintains
water temperature, ignition sequence and regulates gas flow. A safety circuit consisting of a pressure
switch and blower temperature switch verifies proper conditions exist for safe and reliable operation.
If a situation outside of normal operating parameters exists, the gas control diagnostic LED will flash a
code to positively identify an operational issue.
This service manual is designed to facilitate problem diagnosis and enhance service efficiency.
Please read the service manual completely before attempting service on this new series of power
vent models.
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