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For more information, visit www.desatech.com
For more information, visit www.desatech.com
18
OPERATING HEATER Thermostatically-Controlled Models
Lighting Instructions (Cont.)
To Turn Off Gas To Appliance
Thermostat Control Operation
Manual Lighting Procedure
OPERATING HEATER
Continued
CAUTION: Do not try to adjust heating levels by
using the equipment shutoff valve.
5. Turn control knob counterclockwise
C-clockwise
to the PILOT
position. Press in control knob for five (5) seconds (see Fig-
ure 27).
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.
• If control knob does not pop out when released, contact
a qualified service person or gas supplier for repairs.
6. With control knob pressed in, press and release ignitor but-
ton. This will light pilot. The pilot is attached to the front
burner. If needed, keep pressing ignitor button until pilot lights.
Note:
If pilot does not stay lit, contact a qualified service
person 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.
Note:
If pilot goes out, repeat steps 3 through 7. This heater
has a safety interlock system. Wait one (1) minute for sys-
tem to reset before lighting pilot again.
8. Turn control knob counterclockwise
C-clockwise
to desired
heating level. The burners should light. Set control knob to
any heat level between HI and LO.
L
O
HI
O
F
F
P
i
l
o
t
Figure 27 - Control Knob and Ignitor Button Location
Figure 28 - Pilot
Control Knob
Ignitor Button
Thermocouple
Ignitor Electrode
Pilot Burner
Ignitor Electrode
Pilot
Burner
TO TURN OFF GAS TO APPLIANCE
Shutting Off Heater
Turn control knob clockwise
Clockwise
to the OFF position.
Shutting Off Burners Only (pilot stays lit)
Turn control knob clockwise
Clockwise
to the PILOT position.
THERMOSTAT CONTROL OPERATION
The thermostat control knob can be set to any comfort level
between HI and LO. The thermostat will gradually modulate
the heat output and flame height from higher to lower settings,
or pilot, in order to maintain the comfort level you select. The
ideal comfort setting will vary by household depending upon the
amount of space to be heated, the output of the central heating
system, etc.
Note:
Selecting the HI setting with the control knob will cause
the burner to remain fully on, without modulating down in most
cases.
1. Follow steps 1 through 5 under Lighting Instructions, pages
17 and 18.
2. Depress control knob and light pilot with match.
3. Keep control knob pressed in for 30 seconds after lighting
pilot. After 30 seconds, release control knob. Now follow
step 8 under Lighting Instructions, column 1.
MANUAL LIGHTING PROCEDURE
Propane/LP
Natural Gas