14
Figure 17 - Correct Pilot Flame
Pattern
Figure 18 - Incorrect Pilot Flame
Pattern
BURNER FLAME PATTERN
Figure 19 shows a correct burner flame
pattern. Figure 20 shows an incorrect
burner flame pattern. If burner flame is
incorrect:
l
Turn heater off (see TO TURN OFF
GAS TO APPLIANCE)
l
See
troubleshooting
Figure 19 - Correct Flame Pattern
with heater set to High Flame
Figure 20 - Incorrect Flame Pattern
with heater set to High Flame
CLEANING AND MAIN-
TENANCE
WARNING:
Disconnect power be-
fore attempting any maintenance or
cleaning to reduce the risk of fire , elec-
tric shook or personal injury. Turn off
heater and let cool before cleaning.
Figure 21 - Control Module Access
DISCONNECT FAN
1. Remove screws from the fan bracket
panel, pull the fan bracket panel out
to remove. Disconnect two wires
from fan T-stat Switch.
2. Mark or tag each wire removed for
its exact reconnection. Remove the
four screws from the fan. When
installing, reverse the steps above.
(See Figure 22 and Figure 25)
Figure 22 - Fan Access
CLEANING BURNER INJECTOR
HOLDER AND PILOT AIR INLET HOLE
We recommend that you clean the unit
every 2,500 hours of operation or every
three months.
The primary air inlet holes allow the
proper amount of air to mix with the
gas. This provides a clean burning
flame. Keep these holes clear of dust,
dirt, lint, and pet hair. Clean these air
inlet holes prior to each heating
season. Blocked air holes will create
soot. We recommend that you clean the
unit every three months during opera-
tion and have heater inspected yearly
by a qualified service person.
DISCONNECT WIRING OR CONTROL
MODULE
1. Remove screws from the rear con-
trol panel, take out thermostat sens-
ing bulb from the clip, then discon-
nect the wires from control module.
2. Remove two screws and hex nuts,
securing control module. When
installing, reverse the steps above.
(See Figure 21 and Figure 25)
CAUTION:
Label all wires prior to
d i s c o n n e c t i o n wh e n s e r v i c i n g
controls. Wiring errors can cause im-
proper and dangerous operation.
Verify proper operation after servicing.
WARNING:
Failure to keep pri-
mary/air openings of burners clean
may result in sooting and property
damage.
CAUTION:
You must keep control
areas, burner, and circulating air pas-
sageways 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, bed-
ding material, pet hair, etc.
INSPECTING FLAME PATTERN
Check pilot flame pattern and burner
flame patterns often.
PILOT FLAME PATTERN
Figure 17 shows a correct pilot flame
pattern. Figure 18 shows an incorrect
pilot flame pattern. The incorrect pilot
flame is not touching the thermocouple.
This will cause the thermocouple to
cool. When the thermocouple cools, the
heater will shut down. If pilot flame pat-
tern is incorrect, as shown in Figure
18.
l
Turn heater off (see TO TURN
OFF GAS TO APPLIANCE)
l
See
troubleshooting
Summary of Contents for SSU320RHL-B
Page 22: ......
