49-120A 2014-12 Warranty 07-00424
5
Dri-Eaz Products, Inc.
SPECIAL INSTRUCTIONS
Unit has run out of fuel
WARNING: Replace Access Plate after each
adjustment. Do not operate the unit without the hood
securely in place. Serious injury could result.
1. Turn the CONTROL KNOB to the “Off” position
(Fig. C).
2. Open Burner Reset Access Plate by removing the
four retaining bolts (Fig. A).
3. Click the BURNER RESET button once quickly (Fig.
D).
4. Turn CONTROL KNOB to the Heat position. The
burner should start as normal.
5. If the burner does not start, repeat steps 1, 3–4.
6. If the burner does not start after two or three
attempts, press and hold the BURNER RESET for
15+ seconds. This initiates a system reset and will
purge the fuel line of any air.
7. The unit will resume normal operation.
Replace the Access Plate.
If unit will not reset after several attempts, contact your
Dri-Eaz distributor for assistance.
Adjusting for proper combustion and
altitude
The combustion air intake control for the furnace is
factory set for operation at altitudes ranging from sea
level to about 5000 ft. (1500 m). To assure proper
operation and maximum performance at higher altitudes,
it may be necessary to adjust the combustion air/fuel
mixture.
The best guide to proper air/fuel mixture is exhaust
color. The exhaust should always be clear. Black or
white smoke indicates an improper air/fuel mixture:
a) If the exhaust is
clear
, no adjustment is needed.
b) If the smoke is
dark
or
black
, there is not enough air
in the mixture.
c) If the smoke is
white
, there is too much air and not
enough fuel in the mixture, or there is water in the fuel
If the smoke color is either black or white, follow
these steps to adjust the air/fuel ratio.
1. The AIR ADJUSTMENT DIAL (Figs. A, E) is located
on the side of the unit above the fuel filter.
3. Loosen bolt and rotate the shutter in the appropriate
direction:
a) A
larger opening
corrects for black smoke
(allows
more air into the combustion chamber);
b) A
smaller opening corrects for white smoke
(allows
less air).
4. Tighten the dial bolt when adjustment is complete
TIP:
If the exhaust remains white even after adjusting to
the smallest opening, there is probably water in the fuel.
You may need to replace the fuel filter and/or clean the
fuel tank (p. 6).
NOTE: It is normal to see a small amount of smoke
when starting or stopping the unit.
Thermal overload protection
The unit is automatically protected against internal
overheating. If the internal temperature of the heat
exchanger exceeds a preset value, the burner will
automatically turn off. The blower will continue to
operate until the heat exchanger has cooled. Once the
exchanger has properly cooled, the burner will
automatically come back on and the Dragon will resume
normal operation.
Fig. E: Air Adjustment Dial
Loosen nut to
adjust air flow.
Dial rotation:
More air
Less air
Fig. D: Burner Reset Button
Access panel
(removed).
Burner Reset Button
(located on burner)
