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Table 2. LTEC Wiring Diagram.
Pin
Wire
1 L
W
Net
ON
ORKS
2 L
W
Net
ON
ORKS
3 Power/ Service
4 Common
5 Setpoint/Ovrd
6 Room Temp
Table 3. TEC Wiring Diagram.
Pin
Wire
1 Not Used
6 TX/RX
3 Room Temp/
Setpoint,
Override
4 Common
5 TX/RX
2 GND
9.
Plug the terminated cable into the RJ-11 port on the
back of the printed circuit board (PCB).
10. Feed the extra cable back through the hole in the
rubber insulator.
11. Snap the sensor front to the sensor base plate:
a.
Hook the sensor front to the bottom latches.
b.
Push the top of the sensor front into place until it
latches.
12. Tighten the sensor retaining screw with an Allen
wrench. See Figure 3.
13. Connect the sensor to the RTS port on the TEC/LTEC.
The installation is now complete.
LTEC Temperature Scale Selection
LTEC sensors are factory-set for Fahrenheit temperature
scale. To display temperature in Celsius degrees, snip the
jumper (G) as shown in Figure 5.
G
˚
F
Figure 5. LTEC Room Sensor Jumper Location.
Siemens Industry, Inc.
1
Pair 1
2
3
Pair 2
4
5
Pair 3
6
1
Pair 1
6
3
Pair 2
4
5
Pair 3
2
˚
C
Electrical Box and Rough-in Mounting,
Typical
1.
If a locator is attached to the rough-in device, remove
1
the locator by removing the two screws and lightly
2
3
rocking the locator to pull it free.
4
5
2.
Untie the twist tie and pull about three inches (75 mm)
6
of the sensor cable into the space.
3.
If you have a single-sensor electrical box, install the
electrical box adapter plate. See Figure 6.
If you have a double-sensor electrical box,
install the required mounting plate(s).
1
If you use a universal adapter kit for a retrofit job,
6
install the multi-slotted plate in place of the electrical
3
4
box adapter plate. See Figure 6.
5
2
Figure 6. Electrical Box and Rough-in Mounting,
4.
Pull the cable from the wall, through the required
mounting hardware in the order shown.
5.
Install the two sensor mounting screws provided but do
not tighten.
6.
Mount the sensor base plate on the wall, noting the UP
arrow on the stabilizer plate:
a.
Level the sensor base plate for appearance only.
b.
Tighten the two mounting screws to the sensor
base plate.
CAUTION:
Over-tightening may cause the sensor base
plate to crack or bend.
7.
Continue with Drywall Mounting (No Rough-in,
Typical), Steps 7 through 13.
The installation is now complete.
Document No. 540-742
Installation Instructions
January 5, 2012
Typical.
Page 3 of 4
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