TEC22x2-3 L
ON
W
ORKS
® Networked Heat Pump Thermostat Installation Instructions
3
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.
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. See Figure 5.
Note:
If inserting multiple wires into the terminals,
be sure to properly twist wires together prior to
inserting them into the terminal connectors.
5.
Reattach the thermostat 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
cover.
Figure 5: TEC22x2-3 Thermostat Terminals
Y1
G
RC
C
RH
W1
DI1 DI2 RS
Scom
Five-Pole
Left Top Connector
Three-Pole
Right Top
Connector
Seven-Pole Bottom Connector
MS
OS
Aux
F
IG
:t
rm
_
T
E
C
2
2
x
2
_
3
L
W
Bus Terminals
ON
ORKS
2
3
4
5
6
7
11
12
13
14
15
16
10
Y2
O/B
1
8
Table 1: Terminal Identification (See Figure 5.)
Number
Label
Function
1
Y2
Energizes second-stage compressor
on a call for heating or cooling.
2
Y1
Energizes first-stage compressor on
a call for heating or cooling.
3
G
Energizes fan in accordance with
selected fan mode.
4
RC
24 VAC from equipment transformer
5
C
24 VAC (Common) from equipment
transformer
6
RH
24 VAC for heating stage
7
W1
Energizes on a call for auxiliary heat.
8
O/B
Energizes reversing valve.
Configurable to energize valve on a
call for heating or a call for cooling.
10
Aux
Auxiliary output
11
DI1
Configurable Digital Input 1
12
DI2
Configurable Digital Input 2
13
RS
Remote Room Air Temperature
Sensor
14
Scom
Sensor Common
15
OS
Auxiliary/Outdoor Air Sensor
16
MS
Remote Monitoring Supply
Temperature Sensor
Blank
Blank
L
ON
W
ORKS
Bus
Figure 6: TEC22x2-3 Thermostat General Application
DI1
DI2
If using the same power source
for the thermostat and heating loads,
install a jumper across RC and RH.
Scom
OS
Remote
Monitoring
Supply
Temperature
Sensor
Auxiliary/
Outdoor
Air Sensor
24 VAC
Thermostat Power
Y2
Y1
RC
C
Aux
Heat
RH
W1
Aux
Aux
Comp 1
Comp 2
O/B
Rev
Valve
Supervisory
Controller
F
IG
:h
tp
m
p
_
w
rn
g
G
Fan
MS
RS
Isolated Contact
• Lighting
• On/Off Actuation
• Exhaust Fan
Remote
Room
Sensor
L
W
Bus Terminals
ON
ORKS