49-120H F535, F535-230V, F535-230V UK, F535-230V AU
5
Legend Brands, Inc.
Continuous Fan-Only operation
To provide continuous unheated air, set the
CONTROL KNOB to the Fan postion. The burner does
not operate in this mode.
NOTICE:
Physically check the Dragon at least once a
day during operation. Check for leaks, and observe the
exhaust smoke to ensure that it is still clear. Adjust as
necessary for proper operation.
Turning the unit off
Turn the CONTROL KNOB to the “Off” position.
NOTICE:
Do not unplug the unit or otherwise turn off
the power until the fan stops operating, as this may
interrupt the cooling cycle. Failure to let the unit
complete the cooling cycle could damage the heat
exchanger and will not be covered under warranty.
SPECIAL INSTRUCTIONS
Unit has run out of fuel
WARNING: Replace Burner Access Cover after
restarting the unit. Do not operate the unit without
the hood securely in place. Serious injury could
result.
1. Refill tank with fuel.
2. Verify electrical supply is plugged in.
3. Set thermostat well above room temperature.
4. Switch burner to heat.
5. Loosen cover plate screws and pivot
counterclockwise (Fig. D).
6. Press/hold button per Step A (below). If it still does
not start, proceed to the next step.
7. If unit does not start after several attempts, consult
burner manual for additional instructions.
8. Once unit starts, close and secure cover plate.
Adjusting for proper combustion and
altitude
WARNING: The Dragon requires special
adjustments when operating at elevations above
6000 ft. (1830 m). These adjustments must be
completed by a qualified HVAC technician. Do not
operate the Dragon above 6000 ft. without having
the unit adjusted by a qualified HVAC technician.
The air/fuel ratio must be properly adjusted at all
times. For operation at altitudes below 6000 ft., the
air/fuel mixture may be adjusted by the end user
as follows:
Failure to follow these recommendations will void
the warranty.
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:
The AIR ADJUSTMENT DIAL (Figs. A, E) is located
on the side of the unit above the fuel filter.
1. 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).
2. 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 (see Maintenance, 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.
Step A
Flashing light
Button Click
Less than
1 second
Step B
Flashing light
Button Hold
More than
1 second
Step C
Steady light
Button Hold
15+ seconds
Fig. E: Air Adjustment Dial
Loosen center nut
to adjust air flow.
Retighten nut
when finished.
Dial adjustment:
More air
Less air
