Bradford White UPV Series Service Manual page 27

UPV Service Procedure VII – Gas Control Testing and Replacement
Gas Control Removal from Water Heater
Step 1. Position gas control power switch to the "OFF"
position and unplug the water heater from
power supply.
Step 2. Drain the water heater to a point below the gas control level.
Step 3. Turn OFF gas supply to water heater and disconnect gas
piping from gas control.
Step 4. Disconnect the wire harnesses from gas control.
Step 5. Remove the outer jacket burner access door.
Step 6. Disconnect the main burner feedline, swing counter-
clockwise away from the gas control.
Step 7. Disconnect the pilot tube from gas control and move away from
gas control.
Step 8. Remove the gas control from the water heater by rotating
counter-clockwise. DO NOT use a wrench on the gas control
body, damage to the gas control may occur. If necessary, use
a length of ½" NPT pipe threaded into gas inlet of gas control.
Gas Control Installation Into Water Heater
Step 1. Install new gas control into water heater by rotating clockwise. DO NOT use a wrench on the
gas control body, damage to the gas control may occur. If necessary, use a length of ½"
NPT pipe threaded into gas inlet of gas control.
Step 2. Reattach main burner feedline, pilot tube and thermopile wire.
Step 3. Reconnect gas supply piping to inlet of gas control and check for leaks.
Step 4. To resume operation, follow the instructions located on the lighting instruction label or the
lighting instructions located in the Installation and Operation Manual.
115 volt potential exposure.
Use caution to avoid personal injury.
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WARNING
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