Pilot Inspection Testing, Cleaning & Replacement - Bradford White LC2PV50H76N Service Manual

Condensing PV Series
Pilot Inspection, Cleaning & Replacement
Step 1. Position the gas control power
switch to the "OFF" position and
unplug the water heater from wall
outlet.
Step 2. Turn off the gas supply to the water heater.
Step 3. Remove the outer jacket door and inner door
per Service Procedure XIII on page 36.
Step 4. Disconnect the pilot tubing nut (7/16" wrench) and feedline nut (3/4" wrench) from
the gas control.
Step 5. Disconnect the igniter/flame sense wire from the gas control.
Step 6. Remove the burner assembly from the combustion chamber.
Step 7. Remove the pilot assembly from the feedline (1/4" nut driver).
Step 8. Visually inspect the igniter/flame sense wire for damage. Replace the pilot if
damage is found.
Step 9. With a multi-meter set to the ohms setting,
check the continuity through the igniter/flame
sense wire. Replace the pilot if there is no
continuity.
Step 10. Visually inspect the igniter/flame sense
electrode for deterioration. Replace the pilot
as necessary. The electrode should not be in
contact with the pilot hood. If so, carefully
adjust the electrode to a gap distance of 3/32"
(.094") from the pilot hood.
Step 11. Visually inspect the igniter/flame sense
electrode for oxidation build up. Carefully clean
any oxidation using a very fine emery cloth.
Step 12. Visually inspect the pilot tubing for kinks or
cracks. If damage is found, replace the pilot.
Step 13. Inspect the pilot tubing and pilot orifice for
blockage:
a. Remove the ferrule nut from the bottom of the pilot assembly (7/16" wrench).
b. Remove the pilot tube and pilot orifice.
c. Inspect the pilot tubing and pilot orifice for blockage. Clean or replace as
necessary.
Step 14. Reassemble pilot and install on feedline. Reinstall burner assembly to water
heater. Restore gas supply and check for gas leaks.
Step 15. To resume operation, follow the instructions located on the lighting
instruction label or the lighting instructions located in the installation and
operation manual.
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