Install Instructions

Installation Instructions
Document No. 538-493
Rev. 3, November, 2001
Duct Temperature Sensor,
100K ohm Thermistor
Page 1 of 2
Product Description
The single point 100K ohm Duct Temperature
Sensor assembly is inserted into the duct to provide
an input to an equipment controller. It can be
mounted on the outside of a square or round duct.
The mounting plate is made of thin steel, which can
be easily bent to conform to round or irregular
contour ducts. See Figure 1.
Figure 1. Sensor Assembly Mounted on a Round
Duct.
Contents
Shipping carton includes: Sensor assembly with
gasket, two No. 8 self-tapping screws, and two wire
connectors.
Product Number
536-811
Required Tools
•
Medium-duty electric drill with 3/8-inch and
1/8-inch (9.5 mm and 3 mm) drill bits
•
Power screwdriver with 1/4-inch hex
extension or medium, flat-blade screwdriver
Expected Installation Time
12 minutes
Prerequisites
•
Review the instructions before beginning.
•
Appropriate field wiring must be in place.
NOTE:
All wiring must comply with National
Electrical Code (NEC) and local
regulations.
Installation
1. Drill a 3/8-inch (9.5 mm) diameter hole on the
side of the duct where the sensor is to be
mounted.
NOTE:
If you cannot use the self-tapping feature of
the screws provided, use Figure 3 as a
template and drill one 3/8-inch (9.5 mm)
center hole and two 1/8-inch (3 mm)
diameter holes where the sensor should be
located.
Figure 2. Single Point Thermistor Sensor Mounted on
a Square or Round Duct.
2. Insert the sensor into the 3/8-inch hole in the
duct.
3. Secure the sensor assembly to the duct with the
two No. 8 self-tapping screws provided.