Johnson Controls TEC2004-4 Installation Instructions Manual page 4

Wiring
CAUTION: Risk of Electric Shock.
! Disconnect power supply before making
electrical connections to avoid electric
shock.
CAUTION: Risk of Property Damage.
Do not apply power to the system before
!
checking all wiring connections. Short
circuited or improperly connected wires
may result in permanent damage to the
equipment.
IMPORTANT: Make all wiring connections in
accordance with local, national, and regional
regulations. Do not exceed the electrical ratings of
the thermostat controller.
When replacing an existing thermostat controller,
remove and label the wires to identify the terminal
functions. When replacing a thermostat controller of the
same model, simply remove the old screw terminal
blocks and reinsert them onto the PCB of the
replacement thermostat controller.
Terminal
Y1 Energizes on a Call for First-Stage Cooling
Y2
Energizes on a Call for Second-Stage Cooling
G Energizes Fan in Accordance with the Selected Fan Mode
RC
24 VAC from Equipment Transformer
C 24 VAC (Common) from Equipment Transformer
RH 24 VAC for Heating Stages
W1
Energizes on a Call for First-Stage Heating
W2 Energizes on a Call for Second-Stage Heating
Aux
Auxiliary Output
DI1
Configurable Digital Input 1
DI2 Configurable Digital Input 2
RS
Remote Room Sensor
Scom
Sensor Common
OS Auxiliary/Outdoor Air Sensor
MS
Remote Monitoring Supply Temperature Sensor
EC
0 to 10 VDC Economizer Actuator Output
Y2 Y1 G
Cool 1
Cool 2
Fan
24 VAC
Thermostat Power
Figure 5: Wiring the TEC2004-4 or TEC2004-4+PIR Thermostat Controller
4 TEC2004-4 and TEC2004-4+PIR Multi-Stage Economizer Wireless Thermostat Controller
Installation Instructions
Function
RH W1 W2
RC C
Heat 1 Heat 2
If using the same power source
for the thermostat and heating loads,
install a jumper across RC and RH.
To wire the thermostat controller:
1. Strip the ends of each wire 6 mm (1/4 in.) and
connect them to the appropriate screw terminals as
indicated in Figure 5.
Note: If multiple wires are inserted into the screw
terminals, be sure to properly twist the wires
together prior to inserting them into the screw
terminals.
2. Carefully push any excess wire back into the wall.
Note: 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 cover to the mounting base (top side
first).
5. Use a Phillips-head screwdriver to reinstall the
security screw on the bottom of the cover.
See Figure 5 for information on wiring the thermostat
controllers.
Five-Pole
Left Top Connector
Y2
Eight-Pole Bottom Connector
EC
Aux Contact (High Side Common)
• Lighting
• On/Off Actuation
• Exhaust Fan
RS
EC Aux DI1 DI2
Aux
Remote
Room
Sensor
Three-Pole
Right Top
Connector
Y1 G RC C
RH W1 W2
Aux DI1 DI2 RS
OS MS
Scom
OS
Scom
Remote
Auxiliary/
Monitoring
Outdoor
Supply
Air Sensor
Temperature
Sensor