Form I-RA/D 350/500, Page 28
Maintenance
Continued
Cleaning Model
RA/RAD 350
Model RA/RAD 350 - Removing Soot and
Ash from the Combustion Chamber, Heat
Exchanger and Flue Pipe
1. On the burner end of the heater, remove the access panel un-
derneath the service tray.
• Pull the door panel straight out from the heater.
NOTE: Size 350 heaters manufactured prior to October
2004 had single-piece doors the width of the cabinet.
On Size 350 heaters with single-piece outer and in-
ner doors, it is necessary to disconnect the ue pipe
to remove the door panels. Turn the latches 1/4 turn to
remove outer door panel.
2. Remove the inner access panel (exhaust cover).
• Using a 1/2” wrench, remove the nuts and
washers from the inner exhaust cover.
• Pull the cover directly off the studs.
3. Clean the combustion chamber and heat
exchanger tubes. (Refer to the illustration on
page 27.) Clean the ue pipe.
• Use a stiff brush.
• Remove ash from both ends with a shop vacuum.
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.
4. Check Gaskets
• Check all access panel gaskets. If replacement
gasket(s) are needed, use gasket identical to the
original equipment.
5. Re-assemble
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