GE Monogram 3900 Series Remote Thermostat Control, Resistance Heat Models, Field Wiring Terminal

Remote Thermostat Control

In some installations, control of the operation of the unit at a location remote from the unit itself may be desired. A unit mounted high in the wall or over a door, for instance, where the unit-mounted controls are inaccessible, can be connected to a wall-mounted thermostat. Other installations may use remote thermostat control for design or performance enhancement. The unit is connected to the thermostat by low-voltage wiring which permits the operation of the unit to be selected and the temperature sensed at the thermostat.

Important Notes: Remote thermostat wiring should not be run through wall case. Thermostat wiring should exit the wall below the unit and enter the unit between room cabinet and chassis. Wire molding may be used to hide thermostat wiring. If a sub-base is used, the thermostat wiring may be concealed by the sub-base. Thermostat wiring should not be run parallel to line voltage wires since induced current may cause erratic operation.

All Zoneline 2900, 3900 and 5800 Series units are adaptable to Class 2 remote low-voltage thermostat. The only additional field-supplied components are the remote thermostat and wiring necessary to connect it.

The controls on the unit are not functional when the remote control function is used.

Resistance Heat Models

The Zoneline 2900 resistance heat units may be connected to a single-stage thermostat designed for use with cooling with electric heat systems. GE offers three thermostats compatible with the 2900 Series unit.

RAK163A1 —	RAK164D1 —	RAK164P1 —
a mechanical	a solid-state	a solid-state digital
manual	digital manual	programmable
changeover	changeover	auto-changeover
thermostat	thermostat	thermostat
requiring four	requiring five	requiring five
connection wires.	connection wires.	connection wires.

The Class 2 Mode Switch (dip switch #4 on the auxiliary control board) must be set to the ON/UP mode to enable remote thermostat control. Refer to installation instructions packaged with the chassis.

Please see page 57 for installation recommendations for the remote thermostat wiring.

Compatibility of other thermostats considered for use with the GE Zoneline is the responsibility of the customer. The control voltage on the remote control conductors is 24 volts AC.

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The AC voltage may not be compatible with some solid-state thermostats.

The fan speed for the 2900 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.

Freeze Sentinel™ remains operational if the unit is connected to a remote thermostat. The unit may be connected to a Central Desk Control (CDC) system and controlled with a remote thermostat when the CDC system has the unit in operation. See page 14 for additional information on the CDC system.

Unit temperature limiting switches are not functional when unit is connected to a remote thermostat.

Field Wiring Terminal

R — 24V AC

GL — Low-Speed Fan

GH — High-Speed Fan

B— Not Used on 2900

Y— Compressor

W— Heater

C— Common — Ground

CDC	R GL GH B Y W C
		Common — Ground
		White — Heater
		Yellow — Compressor
		Black — Not Used On 2800
		Green — High-Speed Fan
		Green — Low-Speed Fan
		Red — 24V AC
		CDC Terminal

RAK806 Universal Control Cover Label

When a Zoneline unit is using a remote thermostat control, the RAK806 Universal Control Cover Label is recommended. The RAK806 is only available in a package of 10 labels. The label is placed over the control panel directing the user to the wall thermostat for operation of the Zoneline unit.

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