TEC2245-4 L
ON
W
ORKS
® Network Thermostat Controller with Single Proportional Output and One-Speed
Fan Control Installation Instructions
3
Wiring
When replacing an existing thermostat controller,
remove and label the wires to identify the terminal
functions.
When replacing a TEC2245-4 Thermostat Controller,
remove the old screw terminal blocks and reinsert them
onto the PCB of the replacement thermostat controller.
The LON connection does not have a removable
terminal block. It has two screw terminals, one for each
of the two LON wires.
To wire the thermostat controller:
1.
Strip the ends of each wire 1/4 in. (6 mm) and
connect them to the appropriate screw terminals as
indicated in Table 1, and Figure 5 and Figure 6.
Note:
For more details on wiring the L
ON
W
ORKS
network, refer to the
L
ON
W
ORKS
Network Layout
Technical Bulletin (LIT-1162150).
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 L
ON
W
ORKS
communication wires to
the LON terminal block.
Note:
If inserting multiple wires into the terminals,
be sure to properly twist wires together prior to
inserting them in the terminal connectors.
5.
Reattach the thermostat controller cover to the
mounting base (top side first).
6.
Use a Phillips-head screwdriver to reinstall the
security screw on the bottom of the thermostat
controller cover.
!
CAUTION: Risk of Electric Shock.
Disconnect the 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 TEC2245-4 Thermostat Controller.
Figure 4: Removing the Screw Terminal Blocks
F
IG
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Figure 5: Terminal Blocks
3
4
5
6
7
8
10
12
13
14
15
16
Fan
24 V~
Hot
24 V~
Com
BO5
Aux
BO5
Aux
AO1
BI1
Scom
BI2
UI3
LON
LON
F
IG
:t
rm
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b
lk
s
RS
Three-Pole
Left Top Connector
Two-Pole
Right Top Connector
Six-Pole Bottom Connector
