10
Servicing should only be performed by a Qualified Service Technician
7. Remove the 4 brass nuts and 4 lockwashers holding the flange plate to the skirt ring flange.
8. Pull the adapter tube/flange plate/burner assembly out of the combustion chamber. Take care not to
damage the spark igniter or flame sensor during the removal process.
9. Clean the flange plate and skirt ring flange surfaces to remove any portions of the old skirt ring flange
gasket.
10. Support the adapter tube/flange plate/burner assembly in a vertical position with the burner extending
downward.
11. Remove the 3 brass locknuts holding the adapter tube to the flange plate.
12. Separate the adapter tube from the flange plate.
13. Clean the adapter tube and flange plate surfaces removing any portions of the old burner gasket.
Dispose of the old burner gasket.
14. Remove the burner from the flange plate taking care not to damage the spark igniter and flame sensor.
15. Insert the new burner into the flange plate and align the notch in the burner flange with the tab in the
flange plate.
16. Install the new burner gasket over the three studs extending from the flange plate.
17. Install the adapter tube on the flange plate with the 3 brass locknuts. Torque the nuts to 60 in.lb.
18. Install the new skirt ring flange gasket on the flange plate.
19. Insert the adapter tube/flange plate/burner assembly into the combustion chamber and engage the 4
studs through the mounting holes/slots in the flange plate. Install 4 lockwashers and 4 brass nuts on the
studs and torque to 15 ft.lb.
20. Reinstall the blower and silicone gasket on the adapter tube flange using the 4 fasteners. Torque the
fasteners to 20 ft.lb.
21. Reconnect the gas valve to the blower assembly at the gas valve flange. Make sure the o-ring is
properly positioned in the flange groove before tightening the 4 retaining screws.
22. Reconnect the spark ignition cable and ground wire plus the flame sensor wire at their connection
points on the flange plate.
23. Reconnect the vacuum and pressure tubes if removed in step 3.
24. Check that all gas connections and fasteners are tight.
25. Turn on the gas supply and electricity to water heater. Turn on the water heater with the on-off switch
and allow it to ignite and run. While running, check the gas valve flange and the gasketed joints in the
combustion system for leaks.
Summary of Contents for SBL85275NE
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