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Video & Articles: Appliance & Equipment RepairAO Smith Gas Water Heater Burner Head Replacement 100110929 
AO Smith Gas Water Heater Burner Head Replacement 100110929
Skill Level
Total Parts Cost
$0.00Estimated Savings
$112.5004:58
- Description
This video provides step-by-step instructions for replacing the burner head on AO Smith gas water heaters. The most common reasons for replacing this part is if the water heater is not heating.
All of the information in this thermostat replacement video is applicable to the following brands: AO Smith
All of the information in this thermostat replacement video is applicable to the following brands: AO Smith
Step By Step Instructions
1
To replace the gas burner head in this a.o. smith gas water heater…
2
… you will need a 7/16th inch wrench, a 3/8th inch wrench, an adjustable wrench, a quarter-inch nut driver, and a phillips-head screwdriver.
3
Before you begin the procedure, shut off the gas supply to the unit.
4
Detach the outer burner tube assembly cover.
5
Disconnect the safety thermostat wires…
6
… as well as the spark wire.
7
Use the 7/16th inch wrench to unthread the compression nut to detach the pilot gas tube from the gas valve.
8
Use the 3/8th inch wrench to unthread the nut to release the thermocouple from the valve.
9
Now use the adjustable wrench to unthread the nut to release the main burner tube from the valve.
10
Use the quarter-inch nut driver to unthread the two mounting screws securing the burner tube assembly.
11
With the screws unthreaded, you can pull the burner tube assembly out.
12
Turn the assembly upside down…
13
… and use the phillips-head screwdriver to unthread the two mounting screws securing the burner head.
14
Set the old burner head aside
15
To install the new burner head…
16
… align it on the small bracket attached to the main burner tube…
17
… and thread the two mounting screws to secure.
18
Reinstall the burner tube assembly by…
19
… positioning it in the tank opening so the tab on the front of the assembly is inserted into the bracket in the tank cavity.
20
Thread the two mounting screws to secure the assembly.
21
Insert the pilot gas tube into the gas valve and secure with the nut.
22
Insert the main burner tube into the valve and thread the nut to secure.
23
Next, insert the thermocouple and tighten the nut.
24
Attach the spark wire to the spark igniter wire on the valve.
25
Connect the safety thermostat wires to the terminals.
26
Reinstall the burner tube assembly cover.
27
Turn the gas supply back on.
28
With the burner on, you can check the main burner tube and the pilot tube for leaks using a soap and water solution.
Description
This video provides step-by-step instructions for replacing the burner head on AO Smith gas water heaters. The most common reasons for replacing this part is if the water heater is not heating.
All of the information in this thermostat replacement video is applicable to the following brands: AO Smith
All of the information in this thermostat replacement video is applicable to the following brands: AO Smith
Step-By-Step Instructions
1
To replace the gas burner head in this a.o. smith gas water heater…
2
… you will need a 7/16th inch wrench, a 3/8th inch wrench, an adjustable wrench, a quarter-inch nut driver, and a phillips-head screwdriver.
3
Before you begin the procedure, shut off the gas supply to the unit.
4
Detach the outer burner tube assembly cover.
5
Disconnect the safety thermostat wires…
6
… as well as the spark wire.
7
Use the 7/16th inch wrench to unthread the compression nut to detach the pilot gas tube from the gas valve.
8
Use the 3/8th inch wrench to unthread the nut to release the thermocouple from the valve.
9
Now use the adjustable wrench to unthread the nut to release the main burner tube from the valve.
10
Use the quarter-inch nut driver to unthread the two mounting screws securing the burner tube assembly.
11
With the screws unthreaded, you can pull the burner tube assembly out.
12
Turn the assembly upside down…
13
… and use the phillips-head screwdriver to unthread the two mounting screws securing the burner head.
14
Set the old burner head aside
15
To install the new burner head…
16
… align it on the small bracket attached to the main burner tube…
17
… and thread the two mounting screws to secure.
18
Reinstall the burner tube assembly by…
19
… positioning it in the tank opening so the tab on the front of the assembly is inserted into the bracket in the tank cavity.
20
Thread the two mounting screws to secure the assembly.
21
Insert the pilot gas tube into the gas valve and secure with the nut.
22
Insert the main burner tube into the valve and thread the nut to secure.
23
Next, insert the thermocouple and tighten the nut.
24
Attach the spark wire to the spark igniter wire on the valve.
25
Connect the safety thermostat wires to the terminals.
26
Reinstall the burner tube assembly cover.
27
Turn the gas supply back on.
28
With the burner on, you can check the main burner tube and the pilot tube for leaks using a soap and water solution.
Applicable Product Model
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