676292-YIM-A-0111
YCCS TEC2603-4 BACnet® MS/TP Networked Multi-Stage Thermostat Controllers Installation Instructions
4
Figure 5: Wiring the TEC2603-4 Thermostat Controller
F
IG:
wr
n
g
24 VAC
Thermostat Power
Y2
Y1
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
Aux
Aux
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
Auxiliary Output
Digital Input 1 (Filter Only)
Digital Input 2 (Disabled)
Remote Room Sensor
Sensor Common
Auxiliary/Outdoor Air Sensor
Remote Monitoring Supply Temperature Sensor
CCS System Bus
Function
Y1
Y2
G
RC
C
RH
W1
W2
Aux
DI1
DI2
RS
Scom
OS
MS
+, -, REF
Terminal
DI2
DI1
Remote
Monitoring
Supply
Temperature
Sensor
Auxiliary/
Outdoor
Air Sensor
-
+
REF
Supervisory
Controller
Cool 2
Y2
Y1
G
RC
C
RH
W1 W2
DI1 DI2 RS
Scom
Five-Pole
Left Top Connector
Three-Pole
Right Top
Connector
Seven-Pole Bottom Connector
REF
-
+
MS
OS
Aux
G
Fan
Scom
RS
MS
OS
Aux Contact (High Side Common)
• Lighting
• On/Off Actuation
• Exhaust Fan
Remote
Room
Sensor
