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Document No. 540-742
Installation Instructions
January 5, 2012
Mounting Information
Locate the sensor:
• According to design specifications and local
regulations.
• Where the air circulates around it freely (not in
recessed areas or behind doors).
• Allowing a minimum of 4-inches (102 mm) free
space above and below for proper airflow, the front
cover removal tool, and the PC communication
cable.
• Away from drafts caused by doors, windows, outside
walls, air registers, pipes, return air plenums, etc.
• Away from heat sources such as strong lights,
fireplaces, direct sunlight, etc.
• On an inside wall (preferably), about 5-feet (1.5 m)
above the finished floor.
NOTE:
While not recommended, if you must mount the
sensor on exterior brick or cement-type walls, see
Table 5 for Accessories.
Drywall Mounting (No Rough-in), Typical
1.
Using the sensor base plate as a template, mark the
center (cable) hole (use a pencil to press through the
rubber insulator) and the mounting hole locations. See
Figure 2.
CAUTION:
For drywall mounting, only use the top and
.
bottom holes
1-3/8
(34.9)
2-3/8
(60.3)
1
(25.4)
3/16 (4.8)
Figure 2. Mounting and Center Hole Locations
Dimensions in Inches (Millimeters).
2.
Drill two 3/16-inch (4.8 mm) mounting holes.
3.
Cut a 1-inch (25.4 mm) center hole with a hole saw.
See Figure 2.
4.
If using screws to attach the sensor, insert two plastic
wall anchors.
5.
If necessary, use a utility knife to cut a slit through the
rubber insulator in the center hole of the sensor base
plate. Pull about 3 inches (75 mm) of the cable through
the mounting hardware in the order shown.
See Figure 3.
Page 2 of 4
1 (25.4)
Figure 3. Drywall Mounting (No Rough-in), Typical.
Mount the sensor base plate on the wall, noting
6.
the UP arrow on the stabilizer plate:
a.
Install either the two mounting screws provided,
the drive rivets provided, or spring clips, but do
not tighten.
CAUTION:
Pounding too hard or over-tightening may
cause the sensor base plate to crack or bend.
b.
Level the sensor base plate for appearance.
c.
Tighten the two mounting screws to the sensor
base plate.
7.
If the cable is terminated, inspect the RJ-11 connector
for damage.
8.
If the cable is non-terminated or if the RJ-11 was
damaged, cut the cable, leaving about 3 inches
(75 mm) on the sensor side of the drywall, and attach
an RJ-11 connector with an RJ-11 crimping tool. On
the RJ-11 connectors, ensure that pin Number 1
connects to the same wire at each end of the cable.
See Figure 4.
CAUTION:
For retrofits: Before cutting the cable, make
sure it is disconnected from the Room
Temperature Sensor (RTS) port on the
TEC/LTEC cable end.
Figure 4.
Terminating the RJ-11
Connector.
Siemens Industry, Inc.
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