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Technical Instructions
Document Number 155-330P25
September 5, 2008
Principle of
Operation
Mechanical Design
Specifications
QAM2020.045,
QAM2020.020,
QAM2020.010,
QAE2020.005,
QAC2020U and QAP22
QAA24U and QAA25U
Installation
Accessories
Wiring
Legend:
B1 Temperature sensor
signal
B2 Setpoint signal
M Measuring, neutral
Information in this publication is based on current specifications. The company reserves the right to make changes in specifications and models as
design improvements are introduced. Products or company names mentioned herein may be the trademarks of their respective owners.
© 2008 Siemens Industry, Inc.
Siemens Industry, Inc.
Building Technologies Division
1000 Deerfield Parkway
Buffalo Grove, IL 60089
+ 1 847-215-1000
The sensor's nickel sensing element measures the air or medium temperature.
The resistance of the sensing element changes as a function of the ambient
temperature.
The QAP22 Cable Temperature Sensor sensing element is incorporated in the
1000 Ohm Nickel RTD sensors. It is a nickel resistor housed in a metal sleeve so that it
is mechanically and electrically protected. The connecting cable inside the metal sleeve
is provided with a strain relief.
•
The QAA24U and QAA25U room sensors have a temperature sensor mounted
on a circuit board.
•
The plastic housing has a detachable wall plate.
Range of use
Sensing element
Permissible ambient temperature
Cable
Intermittent (two hours/day)
Permissible ambient humidity
Connecting cable (QAP22)
Length
Range of use
Sensing element
Permissible ambient temperature
Permissible ambient humidity
Wiring screw terminals for wires of
Complete installation instructions are provided with the sensors.
AQM2000 Flange gasket kit (if adjustable depth is required for QAM2020.045 duct
point temperature sensors)
ARG70
Wall plate kit (required for wall box mounting)
Figure 1. QAP22,
QAM2020.045, QAM2020.020,
QAM2020.010 and
QAE2020.005.
Your feedback is important to us. If you have
comments about this document, please send them
to
SBT_technical.editor.us.sbt@siemens.com
–13°F to 203°F (−25°C to 95°C)
Siemens Ni1000 at 32°F (0°C)
–13°F to 203°F (−25°C to 95°C)
–13°F to 230°F (−25°C to 110°C)
95% rh 30 days
PVC, 20 AWG
6 feet (1.8 m)
32°F to 122°F (0°C to 50°C)
Siemens Ni1000 at 32°F (0°C)
32°F to 122°F (0°C to 50°C)
<85% rh
2 × 16 AWG or 1 × 12 AWG
Minimum 20 AWG
Figure 2. QAA24U.
1000 Ω Nickel RTD Sensors
Figure 3. QAA25U.
Document No. 155-330P25
Printed in the USA
Page 2
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