HearthRite HR18MN-1, Owner'S Operation And Installation Manual

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13
Figure 22 - Correct Pilot Flame
Pattern
Figure 23 - Incorrect Pilot Flame
Pattern
Figure 25 - Incorrect Burner
Flame Pattern
Figure 24 - Correct Burner Flame
Pattern
BURNER FLAME PATTERN
Figure 24 shows a correct burner
flame pattern. Figure 25 shows an
incorrect burner flame pattern. If
burner flame pattem is incorrect,
as shown in Figure 25.
turn heater off (see To Turn Off
Gas to Appliance. page 11 for
non-thermostat models or page
12 for thermostat models)
see Troubleshooting. pages 14
through 16
CLEANING ODS/PILOT AND
BURNER
Use a vacuum cleaner,
pressurized air. or a small, soft
bristled brush to clean.
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 com-
pressed air no greater than 30 PSl.
Your local computer store, hard-
ware 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 direc-
tions 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, and pilot for dust
and dirt.
3. Blow air through the ports/slots
and holes in the burner.
Also, clean the pilot assembly. A
yellow tip on the pilot flame indi-
cates dust and dirt in the pilot
assembly. There is a small pilot air
inlet hole about two inches from
where the pilot flame comes out of
the pilot assembly (see Figure 26).
With the unit off, lightly blow air
through the air inlet hole. You may
blow through a drinking straw if com-
pressed air is not available.
Figure 26 - Pilot Inlet Air Hole
CLEANING HEATER CABINET
Air Passageways
Use a vacuum cleaner or
pressurized air to clean.
Exterior
Use a soft cloth dampened with
a mild soap and water mixture.
Wipe the cabinet to remove dust.
MANUAL LIGHTING
PROCEDURE
1. Remove lower front panel (see
Figure 7 page 7).
2. Follow steps 1 through 5
under Lighting Instructions on
page 12.
3. With control knob pressed in,
strike match. Hold match to
pilot until pilot lights.
4. Keep control knob pressed in for
30 seconds after lighting pilot. After
30 seconds, release control knob.
Follow step 8 under
Lighting
Instructions on page 12.
5. Replace lower front panel.
INSPECTING BURNER
Check pilot flame pattern and
burner flame pattern often.
PILOT FLAME PATTERN
Figure 22 shows a correct pilot
flame pattern. Figure 23 shows an
incorrect pilot flame pattern. The
incorrect pilot flame is not touching
thermocouple. This will cause the
thermocouple to cool. When the
thermocouple cools, the heater will
shut down. If pilot flame pattern is
incorrect, as shown in Figure 23.
turn heater off (see To Turn Off
Gas To Appliance. page 11 for
n o n - t h e r m o s t a t m o d e l s o r
page 12 for thermostat models)
see Troubleshooting. pages 14
through 16.
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 person. Heater may
need more frequent cleaning due to
excessive lint from carpeting, bedding
material, pet hair, etc.
CLEANING AND
MAINTENANCE
THERMOSTAT
CONTROL OPERATION
The thermostatic control used on
these Models differs from standard
thermostats. Standard thermostats
simply turn on and off the burner.
The thermostat used on this heater
senses the room temperature. At
times the room may exceed the set
temperature. If so, the burner will shut
off. The burner will cycle back on
when room temperature drops below
the set temperature. The control
knob can be set to any heat
level between HI and LO.
NOTE
: The thermostat sensing bulb
measures the temperature of air near
the heater cabinet. This may not al-
ways agree with room temperature
(depending on housing construction,
installation location, room size, open
air temperatures, etc.)Frequent use of
your heater will let you determine
your own comfort levels.
OPERATING YOUR HEATER
Continued