23
Replacement Parts
IMPORTANT:
The following maintenance procedures are
for the Flame Lock
®
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 30-31 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/temperature knob to the “OFF”
position (Figure 19A).
3. Remove the outer door.
4. Remove the two screws
(1/4” nut driver) securing
the manifold door assembly
to the combustion chamber
(Figure 23).
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.
Also use needle nose pliers
to disconnect the red (+)
and white (-) thermopile
wires from the gas control valve/thermostat. See
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 thermopile.
7. Carefully remove the manifold assembly from the
burner compartment.
NOTE:
Be sure not to damage internal parts.
Removing the Burner from the
Manifold Assembly
Natural Gas Burner (Low Nox) & L.P. Burner
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 24A).
Igniter
Wire
Red
Wire
(Left
Side)
Pilot
Tube
Manifold
Tube
Igniter
Button
Figure 22
Gas Control Valve/
Thermostat
Igniter
Lead
Wire
White
Wire
(Right
Side)
VAC
Figure 24A
Natural gas (Low NOx) and L.P.
Burner Assembly
Thermal Switch
Viewport
Manifold Door Assembly
Manifold Door
Gasket
Manifold Tube
Manifold Component
Block
Pilot
Bracket
Igniter Wire
Screws
Burner
Pilot/Thermopile Assembly
Manifold Tube
Manifold Door
Assembly
Pilot Tube
Thermopile Connector
Pilot/Thermopile
Assembly
L.P. Gas Cast Iron 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. Gently, 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 23
Burner Assembly
Removal
Manifold Screw (2)
Manifold Component Block
Manifold Door
Thermal Switch
Pilot Tube
Manifold Tube
Viewport
Thermopile and
Switch Wire
Connections
Piezo Igniter Button
Gas Control Valve/Thermostat
VAC
Outer Door
Not Shown
Screws
Screws
Burner
Manifold Component
Block
Manifold Door
Assembly
Igniter Wire
Pilot
Tube
Manifold
Tube
Viewport
Thermopile
Thermopile
Retainer Clip
Pilot Assembly
Pilot Bracket
Manifold Door
Gasket
Figure 24B
L.P. Gas Burner/
Manifold Burner Assembly
Thermal Switch
