2
Siemens
A6V11681604_enUS_b
Smart Infrastructure
2022-05-25
Use
The Economizer Controller works in combination with a range of sensors, damper actuators,
thermostat, fans and compressors to make use of unconditioned outside air to cool a
building and improve inside air quality.
Features
● Flexible sensor inputs accept Type II NTC 10K or 0-10 Vdc standard sensors, or
Siemens QFM2160U or QFR9530 combination temperature/humidity sensor for enthalpy
control
● Can be used with Siemens OpenAir® damper actuator GQD, GMA or GCA series
● 24Vac digital inputs for indication of occupancy, 3-stage Cooling Stage input, Shutdown,
Heat Conventional, Heat Pump Changeover (HP(B)/HP(O)) or Preoccupancy
● 24Vac relay outputs (digital) for 3-stage Cooling Stage output, Exhaust Fan, VFD On/Off
(Variable Speed Supply Fan Enable), System Alarm output (Title 24) or Energy
Recovery Ventilation (ERV)
● Anti-freeze protection
● Fault detection and alarming
● Brownout protection
Technical Design
The Economizer Controller has 7 analog inputs, 2 analog outputs, 5 digital inputs, 4 digital
outputs, an RS485 port and a USB host interface. POL224.00 is additionally equipped with a
housing (front and rear, snap-on design), three LEDs, three operation buttons and inbuilt
HMI. Customers can operate on the device directly if no mobile application is connected.
