Manualshelf

Installation Instructions

ManualsBrandsSiemens ManualsSensors TemperatureOutdoor Air Temperature Sensors, Technical Specification Sheet
12
Installation Instructions
Document No. 129-461
September 10, 2009
Outdoor Air Temperature Sensor
Item Number 129-461, Rev. CA
Product Description
The outdoor air sensor provides a temperature input to a
controller.
Product Number
Product Number Sensing Element
QAC2030U
10K
Ω
NTC Type II
QAC2032U
10K
Ω
NTC Type III
QAC2012U
1K
Ω
Pt (385
α
)
QAC2020U
1K
Ω
Ni Siemens
QAC2021U
1K
Ω
Ni JCI
Required Tools
• Power screwdriver with standard screw chuck or
medium flat-blade screwdriver
• Wire cutter/stripper
• Drill and drill bits
Expected Installation Time
Two hours
Prerequisites
• Review these instructions before beginning.
• The appropriate field wiring within the maximum
wiring run length for the individual field panel or
equipment controller should be pulled through
the conduit to a utility box near the sensor
location.
• Verify the distance between the utility mounting
box and the outlet end of the pulling elbow. If the
distance is less than 22 inches (56 cm), follow
Option A. If the distance is greater than 22
inches (56 cm), follow Option B.
• The preferred sensor location is the north side of
the building, in the shade. The sensor must be
protected from direct or indirect sunlight and
drafts from exhaust outlets, etc.
Installation
NOTE: All wiring must comply with National Electrical
Code (NEC) and local regulations.
Option A Installation
1. Use an existing opening or drill an opening through
the outside wall for 1/2-inch (13 mm) rigid conduit.
The sensor must be located three to six inches
(7.5 cm to 15 cm) from the wall.
2. Feed the sensor leads through the rigid conduit to
the utility box located on the inside of the building.
Thread the sensor onto the rigid conduit as shown
in Figure 1.
3. Rotate the sensor so that the shield points down
and shades the sensing element from direct and
indirect sunlight.
4. Connect the sensor leads to the field wiring inside
the utility box. See Figure 1.
5. Connect the field wiring to the controller as shown
in the wiring diagram. See Figure 3.
The installation is now complete.
Figure 1. Outside Air Sensor, Option A Installation.

Summary of content (2 pages)