www.desatech.com
116557-01A
6
8. When burner remains lit, set heater at the desired
heat level by slightly depressing the control knob
and turning it counterclockwise to the MED or
HI settings (see Figure 5, page 5).
9. If burner goes out, turn off gas. Slightly depress
and turn control knob fully clockwise to OFF.
Check fuel supply. If adequate fuel is available,
restart heater beginning at step 1, page 5.
FLAME PATTERNS
Figure 6 shows a correct flame pattern. The burner
flame is mostly blue with a slight yellow coloring
on the ends.
Figure 7 shows an incorrect flame pattern. The
flame is mostly yellow. The incorrect flame pattern
results from low gas pressure or from flashback.
CAUTION: Running heater
below specified input rating may
cause flashback. During flash-
back, the burner flame is mostly
yellow. The flame will burn inside
the burner tube, causing a roar-
ing noise. If flashback occurs,
turn heater off. After burner tube
cools, restart the heater.
OPERATION
Continued
TO STOP HEATER
1. Tightly close propane supply valve on propane
tank(s). Allow heater to burn remaining fuel
in hose.
2. Shut off burner. Do this by pushing in the
control knob and turning clockwise to the OFF
position.
TO RESTART HEATER
1. Wait five minutes after stopping heater.
2. Restart heater by following
To Start Heater,
page 5.
WARNING: Review and un-
derstand the warnings in the
Safety Information
section, page
2. They are needed to safely op-
erate this heater. Follow all local
codes when using this heater.
200,000 BTU/HR HEATER
TO START HEATER
1. Before lighting pilot fully close the ball valve
(turn knob fully clockwise).
2. Fully open the valve on the propane cylinder and
wait 15 seconds before proceeding to step 3.
3. Depress red button on safety pilot valve admit-
ting gas to the heater. Then push and release
the ignitor button until the pilot lights.
Slight Yellow
Coloring on
Flame Ends
Burner
Tube
Blue
Flame
Figure 6 - Correct Flame Pattern at High
Position
Yellow
Flame
Flame Inside
Burner Tube
(makes
roaring
noise)
Blue
Flame
Figure 7 - Incorrect Flame Pattern During
Flashback
