Vanguard VN18A, VN18TA, VP16A, VP16TA, VP26A, VP26TA, VN30A, VN30TA, VP16ITA, VP22ITA Installation Manual page 17

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 combustion and
higher levels of carbon monox-
ide 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.
C-clockwise
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 mod-
els (ITA), set thermostat control knob at the
1, 2, 3, or 4, locked positions. Note: When
burners 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
1
2
3
4
Figure 26 - Burner Patterns, Models
VP16ITA and VP22ITA
113052-01A
Shutting Off Heater
1. Turn thermostat control knob clockwise
2. Turn off all electric power to the appliance
Shutting Off Burner Only (pilot stays lit)
Turn thermostat control knob clockwise
to the PILOT position.
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 tempera-
ture (depending on housing construction, instal-
lation location, room size, open air tempera-
tures, etc.) Frequent use of your heater will let
you determine your own comfort levels.
VP22ITA
1. Remove front panel (see Figure 7, page 8).
2. Follow steps 1 through 5 under Lighting In-
3. With thermostat control knob pressed in,
4. Keep thermostat control knob pressed in
5. Replace front panel.
www.desatech.com
TO TURN OFF GAS
TO APPLIANCE
to the OFF position.
Clockwise
if service is to be performed.
THERMOSTAT
OPERATION
MANUAL LIGHTING
PROCEDURE
structions, page 16.
strike match. Hold match to pilot until pi-
lot lights.
for 30 seconds after lighting pilot. After 30
seconds, release control knob. Follow step
8 under Lighting Instructions, page 16.
Clockwise
17