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Service Procedure III:
Burner Tube Inspection and Replacement
Burner Tube Inspection
Step 1.
Inspect burner tube as follows (Acotech metal fiber mesh burner).
a) Outer fiber mesh should be uniform with no tears or deterioration.
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
Note:
Provide the model and serial number for the correct replacement burner.
Step 1.
Fully inspect burner flange gaskets, igniter and flame sensor gaskets for the following:
a) Tears
b) Missing material
c) Cracks
d) Dirt or debris
e) Other imperfections that would inhibit proper seal
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 previous page.
Step 4.
Carefully reinstall flame sensor with gasket and spark rod with gasket and secure with screws from step 7 on
previous page. Reconnect wire harnesses to sensor and igniter.
Step 5.
Reconnect wire harnesses to blower motor and to gas valve.
Step 6.
Reconnect PVC intake 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.
Heater components may be HOT when performing the following steps in this procedure. Take necessary precaution
to prevent personal injury.
WARNING
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