Bradford-White Corp TTW ECO-DEFENDER UTW450S60FR*N Manual De Usuario

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Contact the Bradford White technical support group immediately if diagnosis cannot be made

using the methods described in this service manual. 

Manometer: A liquid “U” tube type or a digital (magna-helic) type can be used. This device is

used to measure gas and/or air pressure and vacuum. 
Multi-Meter: A digital type is strongly recommended. This device is used to measure electrical 

values. The meter you select must have the capability to measure volts AC, volts DC, amps, 

micro-amps and ohms. 
Electronic Probes: In some cases, standard multi-meter probes will damage or simply not be 

effective to obtain certain voltage and ohm reading. It will be necessary to have special elec-

tronic “pin” type multi-meter probes.  These probes are available at most electronic wholesale 

outlets.  
Thermometer: Used to measure water temperature. An accurate thermometer is recommended. 
Water Pressure Gage: Used to measure water supply pressure. Also used to determine  tank 

pressure by adapting to the drain valve of the heater. 
Gas Control Service Tool: BWC part number 239-45991-00. A specialized tool designed to 

remove the gas control from gas control thermal well. Available from your Bradford White 

parts supplier. 
Various Hand Tools: Pipe wrench, channel locks, open end wrenches (3/8", 7/16", 1/2"), 12" 

crescent wrench, Allen wrench set, screw drivers (common & Phillips), 1/4" nut driver, pliers 

(common & needle nose), socket set, side cutters, wire cutters, wire strippers, wire crimpers,

torpedo level, small shop vac, step ladder, flashlight, and 5 gallon pail. 

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