Installation Instructions

Document No. 129-495
Installation Instructions
October 6, 2009
Siemens Industry, Inc. Page 3 of 4
Instructions for Option B,
Continued
Figure 3. Mounting Option B From Bottom to Top.
2. Use the No. 27 drill bit to drill holes for the
hanger straps.
3. Mount the two perforated steel strap hangers
inside the duct.
4. Position the sensor junction box on the duct
and mark the four mounting holes and center
hole. Use a No. 27 drill bit to drill the mounting
holes and a 7/8-inch (22 mm) drill bit to drill the
center hole.
5. With the sensing element still coiled, thread the
sensing element through the center hole using
a rotary movement.
6. When the sensing element has been
completely inserted into the duct, mount the
sensor junction box on the duct.
7. Carefully uncoil the sensing element, avoiding
sharp bends or kinks.
CAUTION:
When uncoiling the sensing element, do
NOT severely bend or kink the element.
The diameter of any bend should be no
less than six inches (152 mm).
8. Attach the junction box and conduit; pull wires
and terminate (see Figure 4). Replace cover.
The installation is now complete.
1. Configure the analog input (AI) point for
10K ohm thermistor input.
Figure 4. Typical Wiring Connection.
NOTE: 1. Some Siemens Building
Technologies, Inc. controllers may
require a shield termination.
2. For individual panel wiring details, refer
to the appropriate hardware manual.