OPERATING HEATER
Continued
TO SELECT
HEATING LEVEL
INFRASTAT MODELS VP16ITA AND VP22ITA ONLY
WARNING: When running heater, set control knob at the 1, 2, 3 or 4 locked positions. Never set control knob between locked positions. Poor combus- tion and higher levels of carbon monoxide may result.
CAUTION: Do not try to ad- just heating levels by using the equipment shutoff valve.
1.Slightly press in plaque control knob on right side of heater and turn counterclock-
wise 
to the desired position. IMPORTANT: Release downward pressure while turning control knob. Control knob will lock at the desired position.
2.For standard models (T), turn thermostat control knob on left side of heater to any set- ting between LO and HI. For infrastat models (ITA), set thermostat control knob at the 1, 2, 3 or 4, locked positions. Note: When burn- ers cycle on, (from LO to HI or one locked positions to another) a “click” will be heard. When the burners light, a “whoosh” noise will be heard.
Plaque |
| |
Control Knob VP16ITA | VP22ITA | |
| 3 |
|
2 | 4 |
|
1 |
|
|
3 | 4 |
|
|
| |
2 |
|
|
1 |
|
|
4 |
| |
3 |
|
|
2 | 1 |
|
|
| |
4 |
|
|
3 | 1 |
|
2 |
| |
Figure 26 - Burner Patterns, Models
VP16ITA and VP22ITA
TO TURN OFF GAS
TO APPLIANCE
Shutting Off Heater
1.Turn thermostat control knob clockwise 
to the OFF position.
2.Turn off all electric power to the appliance if service is to be performed.
Shutting Off Burner Only (pilot stays lit) Turn thermostat control knob clockwise 
to the PILOT position.
THERMOSTAT
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 ex- ceed the set temperature. If so, the burner will shut off. The burner will cycle back on when room temperature drops below the set tempera- ture. For standard models (T), the control knob can be set to any heating level between 1 and 5. All plaques will turn off and on. For infrastat models (ITA), the control knob can be set at the 1, 2, 3 or 4 locked positions for the desired comfort level. The number of plaques selected 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 tem- perature (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.
MANUAL LIGHTING
PROCEDURE
1.Remove front panel (see Figure 7, page 8).
2.Follow steps 1 through 5 under Lighting Instructions, page 16.
3.With thermostat control knob pressed in, strike match. Hold match to pilot until pilot lights.
4.Keep thermostat control knob pressed in for 30 seconds after lighting pilot. After 30 seconds, release control knob. Follow step 8 under Lighting Instructions, page 16.
5.Replace front panel.
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