Y2
Y1
G
RC
C
RH
W1 W2
D1
D2
RS
Scom
5 pole left top connector
3 pole right top
connector
8 pole bottom connector
Cool 2
24 VAC
Thermostat Power
Y2
Y1
G
RC
C
If using the same power source
for the thermostat and heating
loads, install a jumper
across RC and RH.
Heat 1 Heat 2
RH
W1
W2
Fan
Cool 1
Energizes on a call for first stage cooling
Energizes on a call for second stage cooling
Energizes fan in accordance with the selected fan mode
24 VAC from equipment transformer
24 VAC (common) from equipment transformer
24 VAC for heating stages
Energizes on a call for first stage heating
Energizes on a call for second stage heating
Configurable auxiliary output
Configurable digital input
Configurable digital input
Remote room sensor
Sensor common
Outdoor air sensor
Mixed air sensor
0 - 10 VDC Economizer actuator output
Function
Y1
Y2
G
RC
C
RH
W1
W2
AUX
D1
D2
RS
Scom
OS
MS
EC
Terminal
OS
D2
Scom
RS
D1
Remote
Room
Sensor
OS
Remote
Outdoor
Sensor
EC
0
t
o
1
0
V
D
C
2
4
V
A
C
C
o
m
m
o
n
Aux
AUX
MS
EC AUX
Remote
Mixed Air
Sensor
Cool 2
T
6
0
0
M
E
P
_
W
ir
in
g
Figure 5: T600MEP-2 Thermostat Wiring Schematic
T600MEP-2 Programmable Economizer Thermostat Installation Instructions
3