WIR 2
TO SELECT HEATING LEVEL
CAUTION: Do not try to adjust heating levels by using the equipment shutoff valve.
The thermostatic control used on this model turn on and off the burner. The thermostat used on this heater senses the room temperature. At times the room may exceed the set tempera- ture. 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 2 comfort level between HI and LOW. All plaques will turn off and on.
Note: The thermostat sensing bulb measures the temperature of air near the heater cabinet. This may not always agree with room temper- ature (depending on housing construction, installation location, room size, open air tem- peratures, etc.) Frequent use of your heater will let you determine your own comfort levels.
Control Knob
TO TURN OFF GAS TO APPLI-
ANCE
Shutting off burner only (pilot stays lit)
Turn thermostat control knob clockwise 
to the PILOT position.
Shutting off heater
Turn thermostat control knob clockwise 
to the OFF position.
INSPECTING HEATER
Check pilot flame pattern and burner flame pattern often.
PILOT FLAME PATTERN
Figure shows a correct pilot flame pattern. Figure 13 shows an incorrect pilot flame pat- tern. The incorrect pilot flame is not touching the thermocouple. This will cause the thermo- couple to cool. When the thermocouple cools, the heater will shut down.
If pilot flame pattern is incorrect, as shown in figure 14.
•turn heater off (see above, to turn off the gas to appliance )
•see troubleshooting, pages 16 through 18
Note: the pilot flame on natural gas units will have a slight curve, but flame should be blue and have no yellow or orange color.
fig.13
Fig.12 Burner Patterns
fig. 14
12
