Bradford White EF Series Service Manual page 23

Heater components may be HOT when performing the following steps in this procedure.
Take necessary precaution to prevent personal injury.
Burner Tube Inspection
Step 1. Inspect burner tube as follows:
a) Visually inspect ceramic fiber mesh, mesh should be uniform in appearance
without large gaps, tears or fraying. Mesh should have uniform pattern allowing for
unrestricted gas flow.
b) Gently squeeze burner tube, Burner tube should feel firm without any soft areas
around the sides or at the bottom.
c) Visually inspect inside burner tube, Burner tube should be intact with no areas of
deterioration. Ports should be free of any debris.
Step 2. If burner tube is affected by any of the above, replacement is required. Refer to burner
tube replacement procedure below.
Burner Tube Replacement Procedure
Step 1. Fully inspect burner flange gaskets, igniter and flame sensor gaskets for the following:
a) Tears
b) Missing material
c) Cracks
If gaskets are NOT affected by any of the above, gasket replacement is not required.
Step 2. Install burner tube with gaskets into burner mounting insert. Be sure gasket surfaces
are free of debris.
Step 3. Reconnect the blower/gas valve/transition assembly to burner mounting insert. Secure
using nuts from step 8 on page 22.
Step 4. Carefully reinstall flame sensor with gasket and hot surface igniter with gasket and
secure with screws from step 7 on page 22. Reconnect wire harnesses to sensor and
igniter.
Step 5. Reconnect wire harnesses to blower motor and to gas valve.
Step 6. Reconnect PVC venting, gas supply and silicone tubing to gas valve. Turn on gas to
heater and check for gas leaks, repair any gas leaks found.
Step 7. 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 8. Replace surround cover on top of water heater.
SERVICE PROCEDURE EF-III
Burner Tube Inspection and Replacement
WARNING
d) Dirt or debris
e) Other imperfections that would inhibit proper seal
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