
3) To attach extra 30-ft lengths of duct squeeze duct end loop and insert into first duct end
loop. A maximum of three 30-ft lengths of duct can be used for a total maximum length of
90 feet. At least one 30-ft length must be connected to the unit for proper back pressure.
4) Plug unit into a dedicated 115-volt/15-amp circuit, such as the outlet for a washing machine.
OPERATING PROCEDURE:
The Attic Master controls are located on the top right side of the front of the unit. There are 3
switches (See picture):
1. On/Off Switch: 2-Position Switch, turns unit on or off.
2. Fan/Cool Switch: 2-Position Switch, turns unit fan only on or fan with compressor
on.
3. Low 30’/High 60’/90’: 2-Position Switch, turns the fan from low speed for use with a
30’ duct to high speed for use with a 60/90’ duct.
4. Condensate tank with a float switch is located in the front lower compartment of the
unit. When the tank is full a beeping alarm will sound. When removing the tank,
unplug the float jack. When replacing the tank make sure that the drain line is in the
tank and the float jack is plugged in.
IMPORTANT NOTES:
1) Always keep unit in upright position. Do not lay unit down. If the unit is laid down,
the unit must be placed upright and not turned on for at least 4 hours, or compressor
damage may occur, due to compressor oil displacement.
2) Filters should be changed as needed or at least once every 2 months. Remove filter
from slot on top of unit by turning the 2 latch screws. The filter size is 12" x 12" x 1"
(LxWxD).
3) If the air flow is blocked from the intake or exhaust grills the unit will go into alarm,
due to high pressure on the compressor. Press the High Pressure reset button on
back of unit, which will clear the alarm.
CALL 1-800-594-5665 FOR SERVICE OR QUESTIONS