Assortment / System Description

Fan
-
Powe
red Box
Application examples
19
A6V10866237_en--_b_08 149 | 275
19 Fan-Powered Box
The fan powered box (a fan-supported VAV box) with two controlled air flows.
The primary air is controlled with an air damper; the fan is speed controlled.
The fan can be physically installed at two different locations: The serial fan and
the parallel fan.
● The serial fan powered box transports the overall volume flow
● The parallel fan powered box transports only the recirculating portion
The fan powered box application can be configured using a FPB (Fan Powered
Box) application type. Each FPB application type can also combine a
radiant/chilled ceiling (beam) or radiator application. The image below provides
an overview of the FFB application type with all possible HVAC components
that can be configured for a FFB application. The configuration enabled the
applicable (required) aggregate on the DXR2.
Figure: Application types for FPB applications
Key:
DXR2… Automation Station B4 Primary air temperature
B1 Return air temperature sensor R1 Room operator unit
B3 Supply air sensor D1 Presence
B6 Differential pressure sensor
(supply air)
B7 Mixed air temperature sensor
YC Chilled water cooling coils D2 Window contact
YHC Heating/cooling coils YS VAV supply air
YH Hot water heating coils or electric
heating coils
Q1 Serial or parallel fan
Plant diagram