www.usaprocom.com
25
200241-01C
CARE AND MAINTENANCE
WARNING: Turn off heater and let cool before servicing.
CAUTION: You must keep control areas, burner, and circulating
air passageways of heater clean. Inspect these areas of heater before
each use. Have heater inspected yearly by a qualified service techni-
cian. Heater may need more frequent cleaning due to excessive lint
from carpeting, bedding material, pet hair, etc.
WARNING: Failure to keep the primary air opening(s) of the
burner(s) clean may result in sooting and property damage.
MAIN BURNER
Periodically inspect all burner flame holes with
the heater running. All slotted burner flame
holes should be open with yellow flame pres-
ent. All round burner flame holes should be
open with a small blue flame present. Some
burner flame holes may become blocked by
debris or rust, with no flame present. If so,
turn off the heater and let it cool, and remove
blockage or replace burner. Blocked burner
flame holes will create soot.
Figure 34 - Burner and Injector Holder
CLEANING BURNER PILOT AIR INLET HOLE
We recommend that you clean the unit every
2,500 hours of operation or every three months.
We also recommend that you keep the burner
tube and pilot assembly clean and free of dust
and dirt. To clean these parts we recommend
using compressed air no greater than 30 PSl.
Your local computer store, hardware store,
or home center may carry compressed air in
a can. You can use a vacuum cleaner in the
blow position. If using compressed air in a can,
please follow the directions on the can. If you
don’t follow directions on the can, you could
damage the pilot assembly.
1. Shut off the unit, including the pilot. Allow
the unit to cool for at least thirty minutes.
2. Inspect burner, pilot and primary air inlet
holes on injector for dust and dirt (see
Figure 34).
3. Blow air through the ports/slots and holes
in the burner. Also clean the pilot assembly.
4. Check the injector holder located at the
end of the burner tube again. Remove any
large particles of dust, dirt, lint, or pet hair
with a soft cloth or vacuum cleaner nozzle.
5. Blow air into the primary air holes on the
injector holder.
6. In case any large clumps of dust have now
been pushed into the burner. Repeat steps
3 and 4.
Injector
Burner
Tube
Primary Air
Inlet Holes
CAUTION: Never use a wire,
needle, or similar object to clean
ODS/pilot. This can damage ODS/
pilot unit.
Use a vacuum cleaner, pressurized air, or a
small, soft bristled brush to clean.
A yellow tip on the pilot flame indicates dust and
dirt in the pilot assembly. There is a small pilot
air inlet hole about 2" from where the pilot flame
comes out of the pilot assembly (see Figure
35). With the unit off, lightly blow air through the
air inlet hole. You may blow through a drinking
straw if compressed air is not available.
Figure 35 - Pilot Inlet Air Hole
ODS/PILOT
(Back of pilot
shown for clarity)
Pilot Air Inlet Hole
Natural Gas
Burner
Propane/LP
Gas Burner
Thermocouple
Pilot Air Inlet Hole
Ignitor
Electrode
