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.
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 7.)
1
2
3
R
CDC
Ext Fan
Red
CDC
Ext Fan
1
2
3
4
5
6
7
C
W
Y
B
GH
GL
R
yellow
black
white
blue
gr
een
tan
re
d
Feature
Heat Pump
Electric Heat
Indoor Frost Control
Yes
Yes
Freeze Sentinel
Yes
Yes
Auto Fan Speed
No
No
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
