Replacement Parts
IMPORTANT: The following maintenance procedures are for the Flame Guard™ Safety System components and should be performed by a qualified person.
Replacement parts may be ordered through your plumber or the local distributor. Parts will be shipped at prevailing prices and billed accordingly. When ordering replacement parts, always have the following information ready:
1.model, serial, and product number
2.type of gas
3.item number
4.parts description
See pages
Removing the Burner Door Assembly
1.Turn off the gas to the water heater at the manual
2.Before performing any maintenance, it is important to
turn off the gas supply to the | Figure 22 |
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water heater at the manual |
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Gas Control Valve/ |
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gas |
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Thermostat |
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is typically located beside |
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the water heater. Note the |
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position of the |
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in the open/on position, then |
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| Sensor |
proceed to turn it off (Figure |
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VAC |
| Wires | |
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3). |
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3. Remove the outer door. | Igniter |
| White |
| Button |
| Wire |
4. Remove the two screws | Igniter |
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(1/4” nut driver) securing |
| Side) | |
Lead |
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the burner door assembly | Wire | Pilot |
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| Red | ||
to the combustion chamber |
| Tube | |
| Wire | ||
(Figure 23). | Igniter | Manifold | (Left |
| Wire | Tube | Side) |
5.Disconnect the pilot tube
(7/16” wrench), the igniter wire from the igniter lead wire, and manifold tube (3/4” wrench) at the gas control valve/thermostat. Disconnect the sensor wires (lift white lever outward, then gently pull the plug downward). Also, use needle nose pliers to disconnect the red (+) and white
Figure 23 |
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Burner Assembly | Gas Control Valve/ | Temperature Sensor |
Removal | Thermostat | Wire Connection |
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| Thermopile |
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| Wire |
Piezo Igniter Button |
| Connections |
Pilot Tube |
| Manifold Tube |
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Viewport |
| Temperature |
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| Sensor |
Outer Door |
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Not Shown |
| Burner Door |
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Burner Door Screws (2) | Manifold Component Block | |
24 |
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6.Grasp the manifold tube and push down slightly to free the manifold, pilot tube, and thermopile.
7.Carefully remove the burner door assembly from the burner compartment.
NOTE: Be sure not to damage internal parts.
Figure24A
NaturalGas(LowNox)
Burner Door Assembly
Pilot Assembly
Burner
Use brush on this surface.
Figure24B
NaturalGas(LowNox)
Burner Door Assembly
50K Models
Pilot Assembly
Burner
Use brush on this surface.
Natural Gas Burner (Ultra Low Nox)
Check the burner to see if it is dirty or clogged. The burner may be cleaned with soft paint brush (Figure 24). Do not use a wire brush or any tool that may damage the burner screen. Important: Do not use the burner if the burner screen is damaged. NOTE: Damage may be rips or holes in the burner screen. Discoloration is normal.
