American Water Heater 381T1546NOX Water Heater User Manual


 
9
Servicing should only be performed by a Qualied Service Technician
BLOWER AND BURNER ASSEMBLY
BURNER REPLACEMENT:
1. Turn off the gas supply and electricity to the water heater and remove the blower cover.
2. Disconnect the spark ignition cable and ground wire plus the flame sensor wire at their connection points
on the flange plate.
3. Disconnect the hose tubes, power supply and PWM (Pulse-Width Modulation) control to the blower.
4. Disconnect the gas line near the gas valve.
5. Remove the 4 brass locknuts and 4 flat-washers holding the flange plate to the skirt ring flange.
6. Pull the blower and burner assembly out of the combustion chamber. Take care not to damage the
spark igniter or flame sensor during the removal process.
7. Clean the flange plate and skirt ring flange surfaces to remove any portions of the old skirt ring flange
gasket.
Burner
Skirt Ring
Flange Gasket
Flange
Plate
Silicone
Gasket
Blower
Spark Igniter
Flame
Sensor
Burner
Gasket
Gas Control
Valve
Blower
Flange
Brass Locknuts (3)