Manual

920-087-02(9-03)

AppendixA: RemoteThermostatUnit Installation

RemoteThermostatSelection& WiringGuidelinesfor

PackagedTerminalAirConditioners

Follow the instructions and recommendations of the thermostat

manufacturer for installation and wiring. Do not use a conventional

heat pump thermostat with emergency electric heat selection for

our heat pumpunits. Our units make an automatic decision about

turning on electric heat if the heating demand cannot be met by the

heat pump due to low outdoor temperatures.

Manual Changeover Thermostat

For Heat Pump equipped units: A single stage, heat/cool

thermostat with aterminalfor a reversingvalve operation isrequired.

Terminal "B" should be continuously energized in the heat mode

and terminal "G" should be energized whenever there is a call for

heating or cooling. Typically, a heat/cool thermostat designed for

use with electric heat systems will meet the above requirements.

NOTE: This unit is designed for use with a single stage thermostat only. Improper application of the thermostat may result in property

damage, personal injury or death.

Honeywell Thermostat Terminal Designation:

TERMINAL LETTER OPERATION CONTACT MADE

Y Cooling During call for cooling.

W Heating During call for heating.

G Fan Continuous if the slider is inthe "Fan" position,otherwise, intermittent.

C Common Terminal For thermostats requiring a common terminal

R 24 V to the thermostat Directly from the transformer

B (Heat Pump units Only) Reversing Valve Made continuously during call for heating.

For Non-Heat Pump equipped units: A single stage cooling and heating thermostat is required. Terminal "G" should be

energized whenever a call for heating or cooling is made. Typically a heat/cool thermostat designed for use with electric heat

systems will meet this requirement.

SimplifiedWiringExample

Unit Terminal Board

* A-Suffix models do not have a "C" terminal

0 @ _ v _ ® B 01

--T.plca,PTAO,PT.P..lti

[_ -- Wall thermostat

Thermostat Terminals

NOTE: It isthe installer'sresponsibilityto ensurethat all control wiring connectionsare made inaccordance with the installationinstructions.

Improper connection of the thermostat control wiring and/or tampering with the unit's internalwiring can void the equipment warranty and

may result in property damage, personal injury or death. Other manufacturer's PTACsand even older Fdedrich models may have different

control wire connections. Questions concerning proper connectionsto the unit should be directedto the factory.