TEC22x4-3 L
ON
W
ORKS
® Networked Multi-Stage Economizer Thermostats 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 in 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: Terminal Blocks
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
MS
OS
Aux
F
IG
:e
co
n
_
te
rm
EC
L
W
Bus Terminals
ON
ORKS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Figure 6: Wiring the TEC22x4-3 Thermostats
F
IG
:T
E
C
2
2
x
4
_
w
rn
g
24 VAC
Thermostat Power
Y2
Y1
RC
EC
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
DI2
DI1
Remote
Monitoring
Supply
Temperature
Sensor
Auxiliary/
Outdoor
Air Sensor
Supervisory
Controller
Cool 2
G
Fan
Scom
RS
MS
OS
Isolated Contact
• Lighting
• On/Off Actuation
• Exhaust Fan
Remote
Room
Sensor
2
4
V
A
C
C
o
m
m
o
n
0
-1
0
V
D
C
L
W
Bus Terminal
ON
ORKS
Table 1: Terminal Identification (See Figure 5.)
Number
Label
Function
1
Y2
Energizes on a call for second-stage
cooling.
2
Y1
Energizes on a call for first-stage
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 first-stage
heating.
8
W2
Energizes on a call for second-stage
heating.
9
EC
0 to 10 VDC Economizer Actuator
Output
10
Aux
Auxiliary output
11
DI1
Configurable Digital Input 1
12
DI2
Configurable Digital Input 2
13
RS
Remote Room Temperature Sensor
14
Scom
Sensor Common
15
OS
Auxiliary/Outdoor Air Sensor
16
MS
Mixed Air Temperature Sensor
Blank
Blank
L
ON
W
ORKS
Bus