Replacement Parts - American Water Heater Flame Guard Safety System Installation Instructions And User 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 page 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. 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 skirt
(Figure 22).
5. Disconnect the
thermocouple (left-hand
thread), pilot tube, the
igniter wire from the igniter
button, and manifold tube
at the thermostat. (Figure
21.) 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 22
Burner Assembly
Removal
Gas Valve /
Thermostat
Thermocouple
Manifold
Tube
Viewport
Manifold
Door
Manifold
Screw (2)
Figure 21
Igniter
Button
U N I T R O L
WARNING
READ ALL INSTRUCTIONS
BEFORE LIGHTING
T
N
S
Left Hand
Thread
Pilot
Thermocouple
Tube
Manifold
Tube
Piezo
Igniter
Button
Pilot Tube
U N I T R O L
WARNING
READ ALL INSTRUCTIONS
BEFORE LIGHTING
T
N
S
Two Piece Wire
Connector
Removing the Burner from the
Manifold Assembly
Natural Gas Burner (Low Nox)
1. Take off the burner by removing the two (2) screws
located 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 23A).
Figure 23A
Natural Gas (Low Nox)
Burner Assembly
Burner
Thermocouple
Retainer Clip
Burner
Igniter
Wire
L.P. Gas Burner
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 23B).
Figure 23B
L.P. Gas Burner
Assembly
Burner
Pilot Assembly
Manifold Door
Assembly
Two Piece Wire
Connector
Manifold
Door
Gasket
Pilot Bracket
Pilot Assembly
Thermocouple
Manifold Door
Assembly
Pilot Assembly
Screws
Manifold Door
Manifold Door
Assembly
Gasket
Two Piece Wire
Connector
Screws
Thermocouple
Pilot Bracket
Retainer Clip
Igniter Wire
Pilot
Tube
Manifold
Tube
Thermocouple
Viewport
Pilot
Tube
Manifold
Tube
Igniter Wire
Pilot
Tube
Manifold
Tube
Thermocouple
Viewport
21