TEC22x4-3 L
ON
W
ORKS
® Networked Multi-Stage Economizer Thermostats Installation Instructions
4
Connecting the L
ON
W
ORKS
Network
The wiring rules for the L
ON
W
ORKS
network differ from
the wiring rules for the Metasys® N2 Bus and the
BACnet® Master-Slave/Token Passing (MS/TP) Bus.
For more details on wiring the L
ON
W
ORKS
network,
refer to the
L
ON
W
ORKS
Network Layout Technical
Bulletin (LIT-1162150)
.
To connect the thermostat to the L
ON
W
ORKS
network:
1.
Connect the L
ON
W
ORKS
network wires to the
L
ON
W
ORKS
network terminal block on the
thermostat (Figure 5, Figure 6, and Figure 7).
Note:
There is no polarity when connecting the
L
ON
W
ORKS
network wires to the thermostat; however,
we recommend keeping the polarity consistent
throughout the network.
2.
After the L
ON
W
ORKS
network wires are connected
to the first thermostat, continue in a daisy-chained
fashion to the next device.
Note:
The L
ON
W
ORKS
network wiring must be twisted-
pair lines.
Do not run the L
ON
W
ORKS
network 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).
The L
ON
W
ORKS
network requires proper termination
and biasing at the end of a segment (a segment is a
physically continuous length of wire). The thermostat is
not equipped with the ability to provide this termination;
therefore, it cannot be located at the physical end of a
L
ON
W
ORKS
network segment unless a terminator is
attached. Refer to
L
ON
W
ORKS
Network Layout
Technical Bulletin (LIT-1162150)
for end-of-line
solutions.
Setup and Adjustments
Thermostat Operation Overview
Thermostat User Interface Keys
The TEC22x4-3 thermostat user interface consists of
five keys on the front cover (as illustrated in Figure 8).
The function of each key is as follows:
•
Use the
YES/SCROLL
key to:
-
confirm menu selections and to advance to the
next menu item
-
stop the Status Display Menu from scrolling
and to manually scroll to the next parameter on
the menu
Note:
When the thermostat is left unattended for
45 seconds, the thermostat display resumes scrolling.
•
Use the
NO
key to decline a parameter change and
to advance to the next menu item.
Figure 7: Thermostat to Network Connection
Supervisory
Controller
Twist wires together
before inserting them into
the terminals.
F
IG
:L
O
N
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L
W
ON
ORKS
Network Wires
L
W
ON
ORKS
Network
Terminal Block
L
W
Bus Terminals
ON
ORKS
Figure 8: Front Cover of Thermostat
70.0ºF
Room Temp
YES
NO
Backlit, plain text
LCD is easy to read
in any condition.
Five keys on the thermostat
make operation easy and intuitive.
LEDs indicate
system activity.
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IG
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