Data Sheet for Product

Page 2 of 3 Siemens Industry, Inc.
• VAV with Hot Water Reheat (only one reheat
valve) (Application 2523—similar to 2023 with
one reheat valve)
• VAV Series Fan Powered with one stage of
Electric Reheat (Application 2524—similar to
2024 with one stage of electric reheat)
• VAV Parallel Fan Powered with one stage of
Electric Reheat (Application 2526—similar to
2026 with one stage of electric reheat)
• Slave Mode (Application 2473)
Control algorithms are preprogrammed. The
controller is ready to operate after selecting the
application and assigning the unit’s controller
address. If desired, the operator may adjust the air
volume set points in cfm (I/s), room temperature set
points, and other parameters.
Hardware
Controller Board
The ATEC consists of an electronic controller, a
differential pressure transducer, and a damper
actuator assembly. This controller provides all
wiring terminations for system and local
communication and power. The cable from the
room sensor (purchased separately) connects to an
RJ-11 jack on the controller. All other connections
are removable terminal blocks.
The ATEC Base VAV Controller has no external,
wireable I/O. The ATEC VAV with Reheat
Controller, however, has additional I/O: 2 AI/DIs and
2 DOs.
In addition to controlling the integrated damper
actuator, the controller interfaces with the following
external devices (purchased separately):
• Averaging air velocity sensor provided by
VAV terminal unit manufacturers.
• Room temperature sensor with optional set
point dial and night override button.
• Service and commissioning tools.
Room Sensor
The room sensor connection to the controller board
consists of a quick-connect RJ-11 jack. This
streamlines the installation and reduces controller
start-up time. See the Room Temperature Sensors
Technical Specification Sheet (149-312P25) for
more information.
Differential Pressure Sensor
The Differential Pressure Sensor (purchased
separately) is easily connected to the box's air-
velocity sensing elements to provide measurement
of the differential pressure. The measured value is
converted to actual airflow in cfm (I/s) by the ATEC
controller.
ATEC Specifications
Controller & Actuator
Power Requirements:
Power Source
Frequency
Power Consumption
Base:
24 Vac +/-
15%
50/60 Hz
3.5 VA
Reheat:
24 Vac +/- 15%
50/60 Hz
3.5 VA plus loads
Operating Temperature
Range
+32°F to 122°F
(0°C to 50°C)
Shipping & Storage
Temperature Range
-13°F to 158°F
(-22°C to 70°C)
Humidity Range 5 to 95% rh (non-condensing)
Regulatory Compliance UL/CUL 916 PAZX/PAZX7
(Enclosed Energy
Management)
FCC Part 15, Class B
CSA-Std. C22.2 No 205
CE Mark; C-Tick
Dimensions
5-9/16”H x 2-15/16”W x 4-3/16”D
(142 mm x 75 mm x 106 mm)
Weight 1.26 lbs (.572 kg)
Actuator Torque
Run time for 90º
opening or closing at:
50 Hz
60 Hz
Nom. Angle of Rotation
Max. Angle of Rotation
44 lb.-in. (5Nm)
108 sec.
90 sec.
90°
95°
Actuator Shaft Size
Minimum Shaft Length
3/8" to 5/8" (8 to 16 mm) Dial
1/4" to 1/2" (6 to 13 mm) Sq.
3/4" (20 mm)
Transformer Requirements and Recommended
Voltages
Type Class 2, 24 VAC, 50/60 Hz, SELV, PELV