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104463
VENT-FREE NATURAL GAS STOVE HEATER
INSPECTING
BURNERS
Check pilot flame pattern and burner flame
patterns often.
PILOT FLAME PATTERN
Figure 23 shows a correct pilot flame pat-
tern. Figure 24 shows an incorrect pilot flame
pattern. The incorrect pilot flame is not touch-
ing the thermocouple. This will cause the
thermocouple to cool. When the thermo-
couple cools, the heater will shut down.
If pilot flame pattern is incorrect, as shown
in Figure 24
• turn heater off (see To Turn Off Gas to
Appliance, page 13)
• 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.
Figure 23 - Correct Pilot Flame Pattern
Figure 24 - Incorrect Pilot Flame Pattern
Thermocouple
Pilot Burner
Pilot Burner
Thermocouple
SPECIFICATIONS
Btu (Variable) 16,000/30,000
Type Gas Natural Gas Only
Ignition Piezo
Pressure Manifold 3.5" W.C.
Inlet Gas Pressure (in. of water)
Maximum 10.5"
Minimum* 5"
Shipping Weight 28 lbs.
* For input adjustment
TECHNICAL
SERVICE
You may have further questions about instal-
lation, operation, or troubleshooting. If so,
contact DESA International’s Technical Ser-
vice Department at 1-866-672-6040. When
calling, please have your model and serial
numbers of your heater ready.
You can also visit DESA International’s
technical service web site at
www.desatech.com.
SERVICE HINTS
When Gas Pressure Is Too Low
• pilot will not stay lit
• burners will have delayed ignition
• heater will not produce specified heat
You may feel your gas pressure is too low.
If so, contact your local natural gas supplier.
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 Light-
ing Instructions, page 13.
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, Lighting Instructions,
page 13.
MANUAL LIGHTING
PROCEDURE
OPERATING
HEATER
Continued