Installation Instructions

Installation Instructions
Document No. 129-511
October 12, 2009
Duct Point Temperature Sensors
Item Number 129-511, Rev. BA Page 1 of 2
Product Description
The Duct Point Temperature Sensor provides
temperature input to a controller.
Product Numbers
Product
Number
Sensing Element
544-339-XX
1000 Ω Platinum (375 α) RTD
535-741-XX
100K Ω NTC
XX Insertion Length in Inches (mm)
4 4 (101.6)
8 8 (203.2)
18 18 (457.2)
Required Tools
• Drill with 13/32-inch (10.3 mm) bit
• Power screwdriver with standard screw chuck
or medium flat-blade screwdriver
• Wire cutter/stripper
Expected Installation Time
45 minutes
Prerequisite
The appropriate field wiring, within the maximum
wiring length, should be routed through the conduit.
Installation
NOTE: All wiring must comply with National Electric
Code (NEC) and local regulations.
1. Drill a 13/32-inch (10.3 mm) hole into the duct at
the desired location of the sensor. See Figure 1.
2. Remove the conduit box cover and remove
gasket. Assemble gasket onto sensor assembly.
See Figure 1.
3. Insert the sensor tube into the hole.
4. Hold the conduit box against the duct and secure
the sensor to the duct with the two No. 18-8 self-
tapping sheet metal screws supplied with the
sensor.
5. Attach the flexible conduit and field wiring to the
conduit box. Ensure that the conduit and field
wiring have enough length to allow the
installation/removal of the sensor assembly.
Figure 1. Duct Point Sensor Installation.
6. Using the wire nuts provided, attach the sensor
wires to the field wiring in the conduit box.
7. Replace the conduit box cover.
8. Connect the field wires to the controller. See
Figure 2.
The installation is now complete.