Bradford-White Corp MI30T*F service manual GAS Control DISASSEMBLY/REASSEMBLY

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Rotate knob counter-clockwise
to the “OFF” posistion.

The BradfordWhite

DEFENDER

Safety System®

SERVICE PROCEDURE RG-VI

Gas Control

Testing, Disassembly & Replacement (Honeywell)

GAS CONTROL DISASSEMBLY/REASSEMBLY

Step 1. Rotate knob of the Gas Control to the “OFF” position. Step 2. Turn off gas supply to water heater.

Step 3. Disconnect gas supply line from Gas Control. Step 4. Disconnect piezo igniter wire.

Step 5. Remove inner door assembly following SERVICE PROCEDURE RG-I, steps 1 through 3c. Step 6. Remove Gas Control cover screw.

Gas Control cover screw

Step 7. Depress both tabs on the top of the Gas Control cover and pull to remove.

CAUTION

Use caution not to bend or damage valve body pins when removing or installing Gas Control cover.

Valve body pins

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Contents Service Manual Bradford White Introduction White Rodgers/Robertshaw Gas Valve Troubleshooting Chart Honeywell Gas Control Troubleshooting Chart Honeywell Gas Control Troubleshooting Chart Defender Installation of Inner Door With Gasket Combustion chamber Closed Circuit Thermocouple Testing White Rodgers Control Closed Circuit Thermocouple Testing Robertshaw ControlThermocouple Replacement White Rodgers/Robertshaw Gas Valve Open Circuit Thermopile Testing Honeywell Gas Control PILOT/ELECTRODE Assembly Inspection Cleaning and Replacement Piezo IGNITER, Electrode Testing and Replacement DefenderGas Valve Testing and Replacement White Rodgers/Robertshaw Line PressureThermocouple Testing Magnet Assembly Testing White Rodgers ControlMagnet Assembly Testing Robertshaw Control ECO Energy Cut Off Testing Combination THERMOSTAT/GAS Valve ReplacementWrench Boss Position thermocouple, pilot tube and Piezo wire Honeywell Gas Control Testing, Disassembly, and Replacement Thermopile Testing Temperature Sensor Testing DefenderDetermine Water Temperature Inside Tank Sensor Resistance at Various TemperaturesGAS Control DISASSEMBLY/REASSEMBLY Temperature sensor Wire routing clip Disconnect Use caution not to bend or damage valve body pins Pull in this direction Temperature sensor Insertion stick GAS Control Replacement Defender Combustion chamber Main Burner Inspection, Adjustment Cleaning and Replacement Cast Iron Burner AdjustmentPosition thermocouple/thermopile Pilot tube and Piezo wire Burner Cleaning Resettable Thermal Switch Continuity Testing Resettable Thermal Switch Replacement Over Tighten ScrewsScreenLok Flame Arrestor Cleaning Feedline NutDIP Tube Inspection and Replacement Anode Inspection and Replacement Generic Parts List Parts@bradfordwhite.com Techserv@bradfordwhite.com