Specifications

37
GT-PCS Split Units - 60Hz Puron
®
Created: 29 Aug., 2013
Electrical - Thermostat Wiring
Thermostat Installation
The thermostat should be located on an interior wall in a
larger room, away from supply duct drafts. DO NOT locate
the thermostat in areas subject to sunlight, drafts or on
external walls. The wire access hole behind the thermostat
may in certain cases need to be sealed to prevent erroneous
temperature measurement due to air infi ltration through the
wall cavity. Position the thermostat back plate against the
wall so that it appears level and so the thermostat wires
protrude through the middle of the back plate. Mark the
position of the back plate mounting holes and drill holes with
a 3/16” (5mm) bit. Install supplied anchors and secure plate
to the wall. Thermostat wire must be 18 AWG or larger wire.
Wire the appropriate thermostat as shown in Figure 26 or on
the wiring diagram contained in the unit. Practically any heat
pump thermostat will work with these units, provided it has
the correct number of heating and cooling stages.
 CAUTION! 
 CAUTION! 
CAUTION! Refrigerant pressure activated water
regulating valves should never be used with
manufacturer’s equipment.
CAUTION! A communicating service tool (ACDU01A) must
be used to confi gure and diagnose this system.
Figure 26: Connection to thermostat and Air Handler/
Furnace
Low Air Temperature Sensor Installation
An LT2 (Low Air Temperature) sensor is shipped with the
compressor section.
Mount the LT2 sensor in the air handler. On the DXM2 in the
compressor section, clip the VIO jumper (see diagram) and
connect the violet leads from LT2 sensor to the clipped violet
leads on the DXM2 board.
Figure 28: DXM2 LT2 VIO Connection
Figure 27: LT2 Sensor Location
Do not install
LT2 sensor
on this tube
Place LT2 here
using a 5/8” clip
PN: 17B0032N03
Non CLM
Typical Thermostat
Compressor
Compressor Stage 2
Non CLM
Typical
Air Handler
Y1
Y2
O
R
G
C
Y1
Y2
DXM2 Board
Compressor
Section
Electric Heat
W
Reversing Valve O
24Vac Hot
R
Fan
G
24Vac Common
C
AL1
Alarm
E
Electric Heat
L
W2
W1
Y1
Y2
O
R
G
C
LT2
Sensor
LT2
LT2
Air Coil Freeze
Protection
Note: LT2 sensor is shi
pp
ed on both TES and TEP.
with GT-PCS unit.