OPERATING HEATER
Continued
TO SELECT HEATING LEVEL
WARNING
When running heater, set control knob at LOW, MEDIUM, or HIGH locked positions. Never set control knob between locked positions. Poor combustion may result.
CAUTION
Do not try to adjust heating levels by using the manual shut- off valve.
1.Slightly press in control knob and turn counterclockwise 
C-clockwise
LOW, MEDIUM, or HIGH positions.
IMPORTANT: Release downward pressure while turning control knob. Control knob will lock at the desired position.
Control
KnobCGN18RA
OFF
PILOT
IGN
LOW
OFF
PILOT
IGN
MED
OFF
PILOT
IGN
HIGH
OFF
CGN30D
LOW
MED
HIGH
OFF
Figure 17 - Burner Patterns
Continued
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