TEC2604-4 and TEC2604-4+PIR BACnet® MS/TP Networked Multi-Stage Economizer Thermostat
Controllers Installation Instructions
4
4.
Reattach the thermostat controller cover to the
mounting base (top side first).
5.
Use a Phillips-head screwdriver to reinstall the
security screw on the bottom of the thermostat
controller cover.
Connecting the MS/TP Bus
To connect the MS/TP Bus:
1.
Set the MS/TP address of the TEC BACnet MS/TP
Network Series Thermostat Controller per the
engineering drawings and test for bus voltage,
polarity, and isolation prior to wiring the MS/TP
Bus. Use the
Com addr
parameter to set the MS/
TP address for the thermostat controller.
Note:
The wiring rules for the MS/TP Bus differ
from the wiring rules for the N2 Bus. For more
details on wiring the MS/TP Communications Bus,
refer to the
MS/TP Communications Bus Technical
Bulletin (LIT-12011034)
.
2.
Observe the polarity when connecting the bus
wires to the thermostat controller.
3.
After the bus wires are connected to the first
thermostat controller, continue in a daisy-chained
fashion to the next thermostat controller.
Note:
The bus wiring must be twisted-pair lines.
Do not run the bus wiring in the same conduit as
line voltage wiring (30 VAC or above) or other
wiring that switches power to highly inductive loads
(such as contactors, coils, motors, or generators).
Figure 5: Wiring the TEC2604-4 or TEC2604-4+PIR Thermostat Controller
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
Configurable Digital Input 1
Configurable Digital Input 2
Remote Room Sensor
Sensor Common
Auxiliary/Outdoor Air Sensor
Remote Monitoring Supply Temperature Sensor
0 to 10 VDC Economizer Actuator Output
MS/TP Bus
Function
Y1
Y2
G
RC
C
RH
W1
W2
Aux
DI1
DI2
RS
Scom
OS
MS
EC
+, -, REF
Terminal
DI2
Scom
RS
DI1
Aux Contact (High Side Common)
• Lighting
• On/Off Actuation
• Exhaust Fan
OS
Auxiliary/
Outdoor
Air Sensor
-
+
REF
Supervisory
Controller
EC
0 to 10
VD
C
24 V
A
C
Com
m
o
n
Remote
Monitoring
Supply
Temperature
Sensor
Cool 2
F
IG:
wr
n
g
Y2
Y1
G
RC
C
RH
W1 W2
DI1 DI2
RS
Scom
Five-Pole
Left Top Connector
Three-Pole
Right Top
Connector
Eight-Pole Bottom Connector
OS
REF
-
+
MS
Aux
EC
G
Fan
Remote
Room
Sensor
