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Remote Thermostat Control
Heat Pump Models
The Zoneline
®
6100 Series heat pump units may be
connected to a single-stage cooling/two-stage heating
thermostat designed for use with heat pump systems.
GE offers two thermostats compatible with the
6100 series units:
RAK148D1 —
solid-state digital
thermostat
requiring six
connection wires.
RAK148P1 —
solid-state digital
programmable
thermostat
requiring six
connection wires.
Please see page 55 for installation recommendations
for the remote thermostat wiring. Compatibility of other
thermostats considered for use with the GE Zoneline
unit is the responsibility of the customer.
The control voltage on the remote control conductors is 24 VAC.
The remote thermostat-Class 2 option (Mode 6 in the
auxiliary control setting) must be turned ON to enable remote
thermostat control. Refer to installation instructions packaged
with the chassis.
The fan speed for the 6100 Series in remote thermostat
operation is selected by the connection of the fan wire from
the thermostat to either the HIGH or LOW terminal on the
unit. See the sketch of the unit terminals for the location of
the HIGH and LOW fan speed terminals. Operating the unit in
low fan speed reduces the operating sound level of the unit.
Field Wiring Terminal
R — 24V AC GL — Low-Speed Fan
GH — High-Speed Fan B — Reversing Valve
Y — Compressor W — Heater
C — Common
Feature Heat Pump Electric Heat
Indoor Frost Control Yes Yes
Freeze Sentinel
™
Yes Yes
Heat 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
Resistance Heat
with Heat Pump No 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
R
GL
GH
B
Y
W
C
Common
White — Heater
Yellow — Compressor
Black — Reversing Valve
Green — High-Speed Fan
Green — Low-Speed Fan
Red — 24V AC
CDC Terminal
R
GL
GH
B
Y
W
C
Common — Ground
White — Heater
Yellow — Compressor
Black — Reversing Valve
Green — High-Speed Fan
Green — Low-Speed Fan
Red — 24V AC
Resistance Heat Models
Heat Pump Models
CDC
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
above chart shows the unit operation when connected
to a remote thermostat.
Boost heat option should NOT be used with remote
thermostat operation since this will cause the unit to
switch to resistance heat when outdoor temperatures
are below 46ºF.