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Installation Instructions
Document No. 540-149
September 2, 2008
Mounting Information
Always mount the sensor vertically.
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 four inches (10 cm)
free space above and below for proper
airflow, the front cover removal tool, and the
computer 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 five
feet (1.5 m) above the finished floor.
While not recommended, if you need to mount the
sensor on exterior brick or cement-type walls, see
Accessories.
Drywall Mounting (No Rough-in), Typical
1. Mark the center (cable) hole and the mounting
hole locations, using the sensor base plate as a
template. 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 one-inch (25 mm) center hole with a hole
saw.
Page 2 of 4
1 (25.4)
4. If using screws to attach the sensor, insert two
plastic wall anchors.
5. Pull about three inches (75 mm) of the cable(s)
and/or fan switch wires through the mounting
hardware in the order shown.
Figure 3. Drywall Mounting (No Rough-in), Typical.
6. Mount the sensor base plate on the wall, noting
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. Do one of the following:
•
If the cable is terminated: Inspect the RJ-11
connector for damage.
Siemens Building Technologies, Inc.
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