Owner's Manual

32
Cleaning the Combustion Chamber and
Flame-arrestor
1. Follow procedure outlined in “Removing the Manifold/
Burner Assembly.”
2. Use a vacuum cleaner/shop vac to remove all loose debris
in the combustion chamber (Figure 40). Use compressed
air to clear any dust or debris that may have accumulated
in the flame-arrestor.
DOOR GASKET
FLAME ARRESTOR
COMBUSTION CHAMBER
BASE-RING
FILTER
FIGURE 40.
3. Reassemble by following the procedure under “Replacing
the Manifold/Burner Assembly.”
Replacing the Manifold/Burner Assembly
Explosion Hazard
• Tighten both manifold door screws securely.
• Remove any fiberglass between gasket
and combustion chamber.
• Replace viewport if glass is missing or
damaged.
• Replace manifold component block if missing
or removed.
• Replace door gasket if damaged.
• Failure to follow these instructions can result
in death, explosion, or fire.
WARNING
1. Check the door gasket for damage or imbedded debris
prior to installation.
2. Inspect the view port for damage and replace as required.
3. Insert the manifold/burner assembly into the burner
compartment, making sure that the tip of the manifold tube
engages in the slot of the bracket inside the combustion
chamber (Figures 41 & 42).
Pilot/Igniter-Flame Sensor Assembly
Manifold Component
Block
Pilot Tube
Igniter
Wire
Manifold Door
Retainer
Clip
FIGURE 37.
Pull the pilot tube from the pilot assembly (Figure 37).4.
IMPORTANT: Be careful not to bend or alter the position of
the pilot assembly components.
Use a screwdriver to remove the screws securing the Pilot/5.
Igniter - Flame Sensor Assembly. Keep the screws for
reattachement.
Using the old pilot/pilot tube assembly as a guide, bend the 6.
new pilot tube to match the old one. Make only the bends
closest to the pilot before going to the next step.
FIRST BEND(S)
OTHER FITTINGS
NOT SHOWN
FOR CLARITY
PILOT TUBE
SCREWS
OLD PILOT/IGNITER -
FLAME SENSOR ASSEMBLY
FIGURE 38.
Push the new pilot tube and igniter wire through the hole 7.
in the manifold door (See Figure 37). Reconnect the pilot
tube and tighten the nut securing it to the pilot assembly.
IMPORTANT: Keep the pilot orifice in the pilot when making
the connection. DO NOT operate the water heater without
the pilot orifice installed. Reattach the pilot assembly to the
manifold.
Be sure the igniter wire is positioned through the bottom 8.
opening of the manifold component block. See “Replacing
Manifold Assembly” section.
MANIFOLD COMPONENT BLOCK
PILOT TUBE
IGNITER WIRE
FIGURE 39.