A.O. Smith TWI 35-200, Installation, User And Service Manual

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11.4.1 Clean the burner
Caution
Be careful, the burner can be hot
Caution
Always replace the seal after removal of the burner
Note
Mind the ground cable!
Remove the burner:
1.
Close the gas control valve, refer to Installation diagram 8.3.
2. Disconnect the hoses (4, 5) from the air inlet pipe.
3. Remove the secure pin (3) to disconnect the air supply pipe.
4. Pull the air supply pipe (1) out of the water heater.
5. Loosen the 4 screws and disconnect the gas supply pipe (7).
6. Disconnect the hose (8) from the gas control valve (9).
7. Loosen the three bolts (7) to disconnect the gas control valve (9).
8. Take the gas control valve out of the water heater.
Fig. Remove the air supply pipe and gas control valve.
9. Loosen the four nuts to disconnect the fan (10) and the burner (11).
10. Take the fan and burner out of the combustion chamber.
11. Remove the flame rod (12). Do a visual check on the flame rod.
12. Remove the spark plug (13). Do a visual check on the spark plug.
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V1.1, 18-02-2019
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