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The ventilation control lever is located on the left
side of the Zoneline unit, behind the front case
panel.
To access the ventilation control lever, remove
the front panel by removing the filter, taking out
the four front screws, the upper two screws from
the top of the panel and the shipping screws on
each side, if present. (Discard the four side shipping
screws, if present).
When the lever is in the CLOSE position, only the air
inside the room is circulated and filtered.
When the lever is in the OPEN position, some
outdoor air will be drawn into the room. This
will reduce the heating or cooling efficiency.
To close the vent, push the vent lever handle
down, pull it forward and lock it up in place.
To open the vent, push the vent lever handle
down, push it back and lock it up in place.
Energy Tip: Keep the vent control in the CLOSE
position. The room air will be filtered and circulated.
NOTE: Ventilation openings are not intended to be
the source of make-up air for building ventilation
systems due to the additional heating and cooling
loads generated.
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Consumer Support Troubleshooting Tips Care and Cleaning Operating Instructions Safety Instructions
Other features of your Zoneline.
About Heat Pumps (on some models)
Heat pumps can reduce operating costs by
exchanging heat from the outside air—even
when the outside temperature is below freezing—
and releasing that heat indoors.
To get the best economic benefit from your heat
pump, don’t change the room thermostat setting
very often. Raising the heat setting 2–3 degrees
will cause the Zoneline to use its electric heating
elements in order to reach the new temperature
setting quickly.
There is a three minute minimum compressor run
time at any setting to prevent short cycling.
The indoor fan motor starts before the compressor
and stops after the compressor cycles off.
The electric heating elements use much
more electricity than heat pumps and cost
more to operate.
Ventilation Control
Close
On/Off Switch
The unit on/off switch is located on the front
of the Zoneline.
To turn on the unit, press the top of the switch in.
To turn off the unit, press the bottom
of the switch in.
NOTE: The on/off switch does not remove power
from the unit.
ON/OFF
switch
Do Not Operate the Air Conditioner (cool mode) in Freezing Outdoor Conditions
Air conditioners are not designed for use when
freezing outdoor conditions exist. They must not be
used in freezing outdoor conditions.
Open
Vent control (push
lever down and
pull forward or
back to operate)