Operation Manual

T600MSx-3 Multi-Stage Thermostat Installation Instructions 3
To wire the thermostat:
1. Strip the ends of each wire a 1/4 in. (6 mm) and
connect them to the appropriate screw terminals as
indicated in Figure 5.
2. Carefully push any excess wire back into the wall.
Seal the hole in the wall with fireproof material to
prevent drafts from affecting the ambient
temperature readings.
3. Reinsert the screw terminal blocks onto the PCB.
4. Reattach the thermostat cover to the mounting
base (top side first).
Note: Use a Phillips-head screwdriver to reinstall the
security screw on the bottom of the thermostat cover.
Figure 5: Terminal Blocks
Y2
Y1 G RC
CRHW1W2
D1 D2 RS
Scom
5 pole left top connector
3 pole right top
connector
7 pole bottom connector
OS
MS
AUX
1
2
345
6
7
8
10 11 12 14
15
16
13
F
I
G
:
T
6
0
0
M
S
x
_
t
r
m
b
l
k
Table 1: Terminal Identification (See Figure 5.)
Number Label Function
1Y2Energizes on a call for second-stage
cooling.
2Y1Energizes on a call for first-stage
cooling.
3GEnergizes fan in accordance with
selected fan mode.
4RC24 VAC from equipment transformer
5C24 VAC (Common) from equipment
transformer
6RH24 VAC for heating stage
7W1Energizes on a call for first-stage
heating.
8W2Energizes on a call for second-stage
heating.
10 Aux Auxiliary output
11 DI1 Configurable Digital Input 1
12 DI2 Configurable Digital Input 2
13 RS Remote Room Temperature Sensor
14 Scom Sensor Common
15 OS Outdoor Air Sensor
16 MS Not Used
Figure 6: Wiring the T600MSx-3 Thermostats
Cool 2
24 VAC
Thermostat Power
Y2 Y1
GRCC
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
D2
Scom
RS
D1
Remote
Room
Sensor
OS
Remote
Outdoor
Sensor
Aux
AUX
Cool 2
F
I
G
:
T
6
0
0
M
S
x
_
w
i
r
Isolated Contact
- Lighting
- On/Off Actuation
- Exhaust Fan