Replacement Parts - American Water Heater 6510381 Installation Instructions And Use & Care Manual

Replacement Parts

The following maintenance procedures are for the
Flame Guard ® Safety System components and should
be performed by a qualified service technician.
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 27-28 for a list of available repair parts.
Removing the Manifold Assembly
1. Turn off the gas to the water heater at the manual
shut-off valve (Figure 3).
2. Depress the dial stop and turn the gas control knob on
the combination gas control valve/thermostat clockwise
to the "OFF" position (Figure 19).
3. Remove the outer door.
4. Remove the two screws
securing the manifold
door assembly to the
combustion chamber
(Figure 22).
5. Disconnect the
thermocouple (right-hand
thread), pilot tube, the
igniter wire from the igniter
button, the two connectors
attached to the thermal
switch, and manifold tube
at the thermostat. (Figures
22 & 23.) Note: L.P. gas
systems use reverse (left-
hand) threads on the manifold tube.
6. Grasp the manifold tube and push down slightly to free
the manifold, pilot tube, and thermocouple.
7. Carefully remove the manifold assembly from the
burner compartment. Be sure not to damage internal
parts.
Figure 23
Burner Assembly
Removal
Gas Valve /
Thermostat
Manifold
Tube
Thermocouple
Viewport
Manifold
Screw (2)
Figure 22
Dial Stop
U N I T R O L
WARNING
READ ALL INSTRUCTIONS
BEFORE LIGHTING
T
N
S
Right-Hand
Thread
Thermocouple
Thermal
Manifold Tube
Switch Wires
Piezo
Igniter
Button
Pilot Tube
U N I T R O L
WARNING
READ ALL INSTRUCTIONS
BEFORE LIGHTING
T
N
S
Thermal Switch
Manifold
Two Piece Wire
Door
Connector
Removing the Burner from the
Manifold Assembly
Natural Gas Burner (Low Nox)
1. Take off the burner by removing the two (2) screws lo-
cated underneath the burner.
2. Check the burner to see if it is dirty or clogged. The burner
may be cleaned with soap and hot water (Figure 24).
Figure 24A
Natural Gas (Low Nox)
Burner Assembly
Burner
Thermocouple
Retainer Clip
Pilot Assembly
Igniter
Button
Burner
Igniter
Wire
Pilot
L.P. Gas Burner
Tube
1. Separate the pilot bracket from the L.P. burner by
removing screw.
2. Loosen set screw located on top of the L.P. burner near
the manifold door. Carefully, pull the burner away from the
manifold door assembly.
3. Check the burner to see if it is dirty or clogged. The burner
may be cleaned with soap and hot water (Figure 24B).
Figure 24B
L.P. Gas Burner
Assembly
Burner
Pilot Assembly
Thermocouple
Retainer Clip
Manifold Door
Assembly
Two Piece Wire
Connector
Manifold
Door
Gasket
Pilot Bracket
Thermocouple
Manifold Door
Assembly
Pilot Assembly
Screws
Manifold Door
Manifold Door
Assembly
Gasket
Two Piece Wire
Connector
Screws
Pilot Bracket
Thermal Switch
Igniter Wire
Pilot
Tube
Manifold
Tube
Thermocouple
Viewport
Pilot
Tube
Manifold
Tube
Thermal Switch
Igniter Wire
Pilot
Tube
Manifold
Tube
Thermocouple
Viewport
21