Service Manual

Tools Requiredfor Service
It is intendedfor this manualto be usedbyqualified service personnelfor the primarypurpose of
troubleshootingand repair ofthe BradfordWhite Atmospheric Ultra Low NOx Series ofwater
heaters.
The Honeywell Gas C
ontrolwill display error codes intheevent of abnormal operation. Error
codes are listed inthe troubleshootingchartbeginningonpage 5 ofthis service manual. The
troubleshootingchartwill also indicate the p
robablecause for the error codeand directthe service
professionalto a service procedure to properly diagnose theabnormal operation.
Contactthe BradfordWhite technical support group immediately ifdiagnosis cannotbe mad
e
using the methods described inthis service manual.
Page 4
Manometer: A liquid “U” tube type or a digital type can be used.This device is used
to measure gas and/or air pressure and vacuum.
Multi-Meter:Adigital typeisstrongly recommended. This device is usedto measure
electricalvalues.The meter you selectmusthave thecapa
bility to
measure volts AC, volts DC, Amps,micro-ampsand ohms.
Electronic Probes:Insome cases, standard multi-meter probes will damage or simply
notbeeffective toobtain certainvoltage and ohm reading.Itwill b
e
necessary to have special electronic “pin” type multi-meter probes.
These probes are availableatmost electronic wholesaleoutlets.
Thermometer:Usedto measure water temperature.Anaccurate thermometer is
recommended.
Water Pressure Gage:U
sedto measure water supply pressure.Also usedto determine tank
pressure by adapting to the drainvalveofthe heater.
Various Hand Tools:Pipe wrench, channellocks, open end wrenchs
(3/8",7/16",½"),
12" crescent wrench, Allenwrench set, screwdrivers (common&
Phillips), ¼" nut driver,pliers (common&needle nose), socket set, side
cutters,wire cutters,wire strippers,wire crimpers,torpedo level, small
shopvac, ste
pladder,flashlight and 5 gallonpail.
How to Use This Manual
ECO-MAGNUM
75/100-Gallon Atmospheric
Introduction
4