User Manual
External Fan (Field Installed)
When connected, an auxiliary or external fan can be controlled
with the indoor fan motor on the Zoneline. Connections provide
24 V AC to energize a remote relay.
The RAKCDC accessory must be used when using an external
fan.
Central Desk Control (Field Supplied)
The Central Desk Control is a feature that allows the unit to be
made operable/inoperable from a remote location. Operation
of the feature requires that an ON-OFF switch at the remote
location be wired to the two CDC terminals on the control panel
of the Zoneline. When the remote switch is CLOSED, the unit
cannot be operated in the Fan, Cool, or Heat modes by the
control. The Freeze Sentinel and the Heat Sentinel features
remain operable. When the remote switch is Open, the unit is
fully operable by control.
The RAKCDC accessory must be used with a central desk control
system. No “Common Busing” is permitted.
Remote Thermostat
The Remote Thermostat Connectors are included with each
Zoneline.
When connected to a remote thermostat, the indoor air
temperature sensing is shifted from the unit to the remote
thermostat. For this reason, the units will operate slightly
differently when connected to a remote thermostat. The
following chart shows the unit operation when connected to a
remote thermostat.
IMPORTANT:
The Zoneline thermostat connections
provide 24 V AC only.
If using a digital/electronic wall thermostat, you must set it to
the 24 V AC setting. See the Installation Instructions for the wall
thermostat.
NOTICE:
Damage to a wall thermostat or to the Zoneline electronics can
result from improper connections. Special care must be used
in connecting the wires. No line voltage connections should be
made to any circuit. Isolate all wires in building from line voltage.
Auxiliary controls on your Zoneline
11
NOTE: The Class 2 Mode setting (Mode 6) must be set to ON “ “
for the unit to operate with a Class 2 Remote Wall Thermostat.
(See the installation instructions supplied with the remote
thermostat and mode instructions on page 9.)
12
3
R
CDC
Ext Fan
RedCDC
Ext Fan
123456
7
C
W
YB
GH
GL
R
yellow
black
white
blue
green
tan
red
Feature Heat Pump Electric Heat
Indoor Frost Control Yes Yes
Freeze Sentinel Yes Yes
Electronic Temperature Limiting No No
Switch to Resistance Heat Based
on Indoor Temperature
Determined by Remote Thermostat N/A
Switch to Resistance Heat Based
on Outdoor Temperature
Yes N/A
Reverse Cycle Defrost Yes N/A
Simultaneous Partial Resistance Heat with
Heat Pump
Yes N/A
Resistance Heat Lockout Yes N/A
“Smart Fan” Fan Cycle Fan ON/AUTO Set On Remote Thermostat Fan On/Auto Set On Remote Thermostat
Central Desk Control Yes Yes
CDC Switch
CDC Switch
CDC
CDC
CDC
R
R
R
E. Fan
E. Fan
E. Fan
Connect to external
fan relay
Connect to external
fan relay