Auxiliary controls on your Zoneline
The auxiliary control terminal connects are located
behind the room cover beneath the access cover.
Turn off and unplug the unit.
Remove the room cover. See the To Remove the
Room Cover section.
To make wiring connections, insert the connectors
into the appropriate terminals on the control box.
After all desired connections have been made,
replace the access cover and room cover.
The owner is responsible for making all connections and
setting the appropriate AUX SET mode.
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
This electric heat option functions only on the AZ65 model.
When this option is ON “ ,” heat pump operation
is locked out, causing the unit to provide only electric
To set All-Electric Heat option, press MODE until an 8
appears in the first digit of the display. Press the + or - pad
to set this switch to OFF “ “ or ON “ .” This is shown in
the second digit of the display.
Press AUX SET to lock in your selection and exit AUX SET
mode, or press MODE to continue setting other functions.
The default setting for Mode 8 is OFF.
When Heat Boost is ON and outside temperatures
are between 25ºF and 46ºF, supplementary electric
heat to the heat pump operation to help maintain a
consistent, comfortable room temperature.
To set Heat Boost, press MODE until a 9 appears in the
first digit of the display. Press the + or - pad to set this
switch to OFF “ “ or ON “ .” This is shown in the
second digit of the display. Press AUX SET to lock in
your selection and exit AUX SET mode.
The default setting for Mode 9 is OFF.
All-Electric Heat (AZ65 only)
Heat Boost (AZ65 only)
Heat Boost OFF
Heat Boost ON