Form I-RA/D 350/500, Page 30
Cleaning Model
RA/RAD 500
Model RA/RAD 500 - Removing Soot and
Ash from the Combustion Chamber, Heat
Exchanger, and Flue Pipe
1. Open the doors on the turning box end.
• Turn the outer door latches 1/4 turn.
• Remove the door panels by lifting upward and outward on the
door handle
• Using a 1/2” wrench, remove the nuts and washers from
the inner doors.
• Swing the doors open.
2. Open the access panel located beside the service tray.
• Turn the outer door latches 1/4 turn.
• Pull the panel up and out from the heater.
• Using a 1/2” wrench, remove the nuts and washers from
the inner access panel.
• Pull the cover directly off the studs.
3. Disconnect the ue pipe from the ue collar.
4. Clean the combustion chamber (page 29), heat exchanger
tubes, and the ue pipe.
• Use a stiff brush.
• Remove ash with a shop vacuum.
Disconnect the Flue
Pipe
Remove the Outer
and Inner Access
Panels
WARNING: The ash that is removed from this heater
may contain heavy metal compounds that are
environmentally undesirable and should be disposed
of in a conscientious manner.
5. Check Gaskets
• Check all access panel gaskets. If replacement gasket(s) are
needed, use gaskets identical to the original equipment.
6. Re-assemble
Replacing the Compressed Air Filter
Locate the compressed air lter.
• Remove the wing nut, the cover plate, and the lter.
• Properly discard the old lter and replace with a new
lter (Reznor P/N 107216, Wix Filter No. 43274, or
NAPA No. 2374).
• Fasten with cover and wing nut.
Compressed
Air Filter
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