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10 Installation instructions and Owner’s Manual
Figure 16
CAUTION: Do not try to adjust heating level by using
equipment shutoff valve.
WARNING: When running heater, set control knob at
“LO” or “HI” locked positions. Poor combustion and
higher levels of carbon monoxide may result if heater
is operated with control knob positioned between
locked positions.
IMPORTANT: Release downward pressure while turning
control knob. Control knob must be locked at the
desired position.
TO TURN OFF GAS TO APPLIANCE
SHUTTING OFF HEATER:
1. Turn control knob clockwise to the OFF position.
2. Turn off equipment shutoff valve.
SHUTTING OFF BURNER ONLY (PILOT STAYS LIT)
1. Turn control knob clockwise to the PILOT/IGN
position.
INSPECTING BURNER
Check pilot flame pattern and burner flame pattern often.
PILOT FLAME PATTERN
Figure 17 show a correct pilot flame pattern. Figure 22
shows an incorrect pilot flame pattern. The incorrect
pilot flame pattern is not touching thermocouple. This
will cause the thermocouple to cool. When the thermo-
couple cools, the heater will shut down. If pilot flame
pattern is incorrect, as shown in Figure 22:
• Turn heater off (see To Turn OFF Gas to Appli-
ance, page 10 for non-thermostat models).
• See Troubleshooting, pages 12 and 13.
Figure 22
CLEANING AND MAINTENANCE
WARNING: Turn off heater and let cool before
servicing.
CAUTION: You must keep control areas, burner and
circulation air passageways of heater clean. Inspect
these areas of heater before use. Have the heater
inspected yearly by a qualified service person. Heater
may need more frequent cleaning due to excess lent
from carpeting, bedding material, pet hair, etc.
Control Knob
Figure 17