Siemens BACNET 125-5037 - Manual (Page 20)

Applications
10 Siemens Building Technologies, Inc.
Application 2561 VAV Cooling or Heating
Overview
In Application 2561, the controller modulates the supply air damper of the terminal box for
cooling and heating. In order for it to work properly, the central air-handling unit must provide
cool supply air in cooling mode and warm air in heating mode. See Figure 6.
BACnet Actuator
Controller
Modulating
Damper
Actuator
TEC2561CDR1
Air
Velocity
Sensor
Supply Air
Damper
SAFETIES
BY
OTHERS
3 4 5 6
C
Wall Switch (Opt.) N O
Spare DO or
Autozero Module (Opt.)
Spare DOs
"COMMON" Termination for all DOs
Duct Temp Sensor
(10K ohm thermistor - Opt.)
Supply Air
3 to 5 Straight Duct Diameters
required for proper sensor reading
Hi/Lo Tubing
Connections
RTS
FLN
Figure 6. Application 2561 Control Drawing.