PTAC Owners Manual

THERMOSTAT WIRE ROUTING

(UNDER SLEEVE, BEHIND FRONT PANEL)

A07074

R W Y O Gh Gl C

A07073

WALL THERMOSTAT TERMINAL

IMPORTANT: Only trained, qualified personnel should access electrical panel on unit

electrical accessories. Please contact your local electrical contractor, dealer, or distributor

assistance.

Thermostat Wire Routing

Thermostat wire is field supplied. Recommended wire gauge is 18 to 20 gauge solid thermostat

NOTE: It is recommended that extra wires are run to unit in case any are damaged during installation.

Thermostat wire should always be routed around or under, NEVER through, the wall sleeve.

should then be routed behind the front panel to the easily accessible terminal connector.

AUXILIARY CONTROLS

Fig. 22 – Proper Wire Routing Beneath Unit

Fig. 23 – Terminal Connector Removal and Replacement

Wiring Thermostat To Unit

Wire wall thermostat input as defined in Fig. 25.

NOTE: Terminal connector can be removed and replaced to simplify the wiring.

NOTE: For heat pump models, anytime there is a second--stage call for heating from the wall

thermostat, the unit will automatically switch over to electric heating.

Install Thermostat Wiring

1. Check to be sure power to unit is disconnected.

2. Pull terminal connector to remove.

NOTE: Terminal connector can be removed and replaced to simplify thermostat wiring.

3. Connect wires from the thermostat to terminals on unit terminal connector.

4. Reinstall terminal connector.

5. Ensure that unit is cofigured for wall thermostat enable.

6. Replace control panel label with wall thermostat label (included).

7. Restore power to unit.

NOTE: Refer to thermostat installation instructions for details on installing wall thermostat.

NOTE: For thermostats that have only one fan speed output (on or auto), the fan speed is

determined by how the terminal connector is wired. If Low fan is desired, wire the G output from

the thermostat to GL on the unit’s terminal block. If Hi fan is desired, wire the G output from the

thermostat to GH on the unit’s terminal block.

NOTE: After proper installation, if your thermostat is not working properly, refer to the Trouble

Shooting section.