Filter
Top Products
107902-01D
14
For more information, visit www.desatech.com
For more information, visit www.desatech.com
IGNITOR
PILO
T
LO
O
F
F
HI
CAUTION: Do not try to adjust heating levels by
using the equipment shutoff valve.
Figure 22 - Control Knob In
The OFF Position
Figure 23 - Pilot
Shutting Off Heater
1. Turn control knob clockwise
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 control knob clockwise
Clockwise
to the PILOT position.
OPERATING HEATER
Continued
1. Remove front panel (see Figure 10, page 8).
2. Follow steps 1 through 5 under Lighting Instructions.
3. With control knob pressed in, strike match. Hold match to
pilot until pilot lights.
4. Keep control knob pressed in for 30 seconds after lighting
pilot. After 30 seconds, release control knob. Follow step 8
under Lighting Instructions.
5. Replace front panel.
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. The thermostat adjusts the amount of gas
flow to the burner. This increases or decreases the burner flame
height. At times the room may exceed the set temperature. 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 heat level between HI and LO.
Note:
The thermostat sensing bulb measures the temperature of
air near the heater cabinet. This may not always agree with room
temperature (depending on housing construction, installation
location, room size, open air temperatures, etc.). Frequent use of
your heater will let you determine your own comfort levels.
THERMOSTAT
CONTROL OPERATION
1. STOP! Read the safety information, page 13, column 2.
2. Make sure equipment shutoff valve is fully open.
3. Turn control knob clockwise
Clockwise
to the OFF position
(see Figure 22).
4. Wait five (5) minutes to clear out any gas. Then smell for
gas, including near the floor. If you smell gas, STOP! Fol-
low “B” in the safety information, page 13, column 2. If
you don’t smell gas, go to the next step.
5. Turn control knob counterclockwise
C-clockwise
to the PILOT
position. Press in control knob for five (5) seconds
(see Figure 22).
Note:
You may be running this heater for the first time
after hooking up to gas supply. If so, the control knob may
need to be pressed in for 30 seconds or more. This will al-
low air to bleed from the gas system.
6. With control knob pressed in, push down and release igni-
tor button. This will light pilot. The pilot is attached to the
front of burner. The pilot can be seen through the glass panel.
If needed, keep pressing ignitor button until pilot lights.
Note:
If pilot does not stay lit, refer to Troubleshooting,
pages 17 through 19. Also contact a qualified service per-
son or gas supplier for repairs. Until repairs are made, light
pilot with match. To light pilot with match, see Manual
Lighting Procedure.
7. Keep control knob pressed in for 30 seconds after lighting
pilot. After 30 seconds, release control knob.
• If control knob does not pop up when released, contact a
qualified service person or gas supplier for repairs.
Note:
If pilot goes out, repeat steps 3 through 7. This heater
has a safety interlock system. Wait one (1) minute before
lighting pilot again.
8. Turn control knob counterclockwise
C-clockwise
to desired
heating level. The main burner should light. Set control
knob to any heat level between HI and LO.
Control Knob
Ignitor Button
Pilot Burner
Ignitor Electrode
Thermocouple
OPERATING HEATER (Thermostat Control Blue Flame and Infrared Models)
Lighting Instructions
To Turn Off Gas To Appliance
Thermostat Control Operation
Manual Lighting Procedure
LIGHTING
INSTRUCTIONS
TO TURN OFF GAS
TO APPLIANCE
MANUAL LIGHTING
PROCEDURE