Bradford White RG130T*N Series Service Manual page 20

SERVICE PROCEDURE RG-V
Gas Valve Testing and Replacement
(White Rodgers)
Step 7. Removal of gas valve.
a) Disconnect main burner feedline, pilot tube and thermocouple from
gas valve & remove burner from combustion chamber.
NOTE: Feed line nut for natural gas control uses right hand threads,
LP control uses left hand thread.
b) Remove piezo bracket with piezo igniter
(refer to SERVICE PROCEDURE RG-IV) from gas valve.
c) Remove gas valve from water heater, rotating counter
clockwise using a control body wrench or a length of ½"
NPT pipe threaded into inlet of control.
Step 8. Installation of gas valve.
a) Install new gas valve using a control body wrench or a length
of ½" NPT pipe threaded into inlet of control.
DO NOT OVER TIGHTEN. Use caution not to damage cast aluminum body of
gas valve. Be certain not to damage the bundled wire leads.
NOTE: Gas valve must be installed in proper upright position to assure the
b) Reattach piezo bracket with piezo igniter to gas valve.
c) Reattach main burner feedline, pilot tube and thermocouple to gas valve.
NOTE: Feedline nut for natural gas control uses right hand threads, LP
control uses left hand thread.
d) Gather wire leads of gas valve and piezo igniter and secure alongside of
feedline using new wire tie provided.
e) Connect gas supply piping to inlet of control. Use back up wrench on
wrench boss of control, never use back up wrench on body of control.
Step 9. Reinstallation of inner door assembly.
a) Prior to reinstallation of inner door, fully inspect inner door gasket for the following:
> Tears
> Missing Material
> Cracks
> Dirt or debris
If the gasket is not affected by any of the above, gasket replacement will not be required. If replacement is
required, replace using new gasket kit following the instructions provided with kit.
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feedline will align properly at the inner door flange. DO NOT OVER TIGHTEN.
If control is turned past proper alignment, do not reverse direction to align.
> Gasket adhesion to inner door
> Other imperfections that will inhibit proper seal
> Material left on combustion chamber