Siemens POL220 Series - Page 4

Document No. 125-1902
User Guide
June 26, 2018
Page 4 of 16 Siemens Industry, Inc.
NOTE: QFM2160U Combination Temperature/
Humidity Sensors must be powered by an
external 24 Vac power supply.
CO
2
Sensor – Demand Control
Ventilation (DCV)
1. Mount the QPA2000 CO
2
Sensor in an area with
unobstructed air circulation. See QPA…Series
Indoor Air Quality Room Sensors Installation
Instructions (129-435).
2. Connect the sensor to the IAQ and COM
terminals of the controller. See Figure 4.
NOTE: CO
2
sensors must be powered by an
external 24 Vac power supply.
Powering the Economizer
Controller
To power the Economizer Controller, connect a
24 Vac external power supply source.
Figure 5. Connecting to Power Supply Source.
Damper Actuator Connection to the
Economizer Controller
1. Connect the appropriate Siemens OpenAir
Damper Actuator to the controller actuator input
as shown.
2. Select the appropriate modulating (2 to 10 Vdc)
spring return damper actuator to operate the
Economizer damper. See Table 1.
Figure 6. Damper Actuator Connections.
Table 1. Damper Actuator Selection.
Damper Actuator
Part Number
Torque Rating
Description
GQD151.1P
20 lb-in
Spring Return, 2 to 10 Vdc Signal, Plenum-rated
GMA151.1P
62 lb-in
Spring Return, 2 to 10 Vdc Signal, Plenum-rated
GCA151.1P
160 lb-in
Spring Return, 2 to 10 Vdc Signal, Plenum-rated
Figure 7. Economizer Control Adjustments.