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PDX SERVICE PROCEDURE IV
Blower Testing and Replacement
Step 1. Position gas control power switch to the “OFF” position.
Step 2. Unplug blower power cord from wall outlet.
Step 3. Disconnect vent system from exhaust adapter on top of
blower.
Step 4. Remove exhaust adapter from blower (blade screw driver)
and retain for use on new blower
Step 5. Unplug cord sets from blower.
Step 6. Remove vertical air intake bracket.
Step 7. Disconnect vertical air intake from blower.
Step 8. Remove the three blower mounting screws
(¼" nut driver).
Step 9. Remove blower with gasket from water heater.
Blower Mounting
Screws
Blower
Cord Sets
Step 10. Clean any debris from jacket head of water heater.
Step 11. Set new blower with gasket in place using locating pins on
blower flange to line up with location holes in jacket head.
Be sure not to damage gasket.
Step 12. Secure blower in place using mounting screws from step 8.
Step 13. Slide vertical air intake tee onto blower.
Step 14. Re-install vertical air intake bracket.
Step 15. Re-install exhaust adapter from step 4.
Step 16. Reconnect vent system to exhaust adapter.
Step 17. Reconnect cord sets from step 5.
Step 18. Plug blower power cord into wall outlet.
Step 19. Position gas control power switch to the “ON” position.
Step 20. Verify proper blower operation.
Locating Pins
on blower flange
Pin location holes in
jacket head
Remove exhaust adapter
and retain for use on
new blower.
Blower removal
Blower Installation
Page 21
PDX Series
Vertical air intake
bracket
Vertical air intake
21