Bradford White EF Series Service Manual page 21

Combustion System Replacement Procedure
Step 1. Fully inspect burner mounting insert gasket for the following:
a) Tears
b) Missing material
c) Cracks
If gasket is NOT affected by any of the above, gasket replacement is not required.
Step 2. Install combustion assembly using new gasket or fully inspected gasket from step 1.
Secure combustion assembly at the burner mounting insert using screws from step 6
on page 20. Tighten screws evenly.
Step 3. Reconnect wire harnesses to hot surface igniter, flame sensor, blower and gas valve.
Step 4. Reconnect PVC venting, gas supply and silicone tubing to gas valve. Turn on gas
supply to heater and check for gas leaks, repair any gas leaks found.
Step 5. Restore 120 volt power supply to water heater and confirm proper operation following
the lighting instructions on the lighting instruction label or the lighting instruction located
in the installation and operating instruction manual.
Step 6. Replace surround cover on top of
water heater.
SERVICE PROCEDURE EF-II
Combustion System Testing and Replacement
d) Dirt or debris
e) Other imperfections that would inhibit proper seal
Burner mounting
screw
(Total of 5)
Gas valve
wire harness
Gas
connection
PVC vent
connection
Burner mounting
insert
Burner tube
Burner mounting
insert gasket
Page 21
Page 21