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Safety Instructions Operating Instructions Care and Cleaning Troubleshooting Tips Consumer Support
Heat Sentinel
When this switch is enabled
(UP)
, it turns ON
the heat sentinel protection feature. With the
switch disabled
(DOWN)
, the heat sentinel is
de-activated. This feature automatically provides
cooling without user interface. This helps to
prevent an excessively hot room by turning the
air conditioner ON at 85°F and OFF at 80°F.
Heat Sentinel
Heat Boost (AZ3900 only)
When this switch is enabled
(UP)
and outdoor
temperatures are between 25°F and 46°F, heat
pump only operation is locked out. This setting is
used to provide supplementary heat to the heat
pump operation in conditions where the heat
pump only operation is not sufficient to maintain
a consistent, comfortable room temperature.
NOTE: This is an auxiliary switch for AZ2900 models and
must remain in the (DOWN) position.
BOOST (Heat Boost Operation)
Auxiliary Controls—Terminal Connections
The auxiliary controls are located behind the
room cabinet beneath the access cover.
Remove the room cabinet. See the
To Remove the Room Cabinet
section.
Remove the screw from the access cover.
To make wiring connections, insert the wires
into the bottom of the terminals and tighten
screws securely.
After all desired connections have been
made, replace the access cover and room
cabinet.
The owner is responsible for making all
connections and setting the appropriate
dip switches.
CAUTION:
Improper wiring may damage the Zoneline
electronics. No common busing is permitted.
Damage or erratic operation may result.
A separate wire pair must be run from each
separate controlling switch to each individual
Zoneline.
4
3
2
1
External Fan
Central Desk Control
Common - Ground
White - Heater
Yellow - Compressor
Black - Solenoid
Green - High Speed Fan
Green - Low Speed Fan
Red - 24 V AC only