Data sheet
AB-PM DN 40-100
4 | VD.HR.D1.02
© Danfoss | 2018.01
Fig. 2 Staged commissioning – 1st stage : ensuring Δp and flow for each zone
Fig. 3 Staged commissioning – 2nd stage : Installation of terminal units
DPCV: several fancoils with
individual room control
PIBCV: zone control for
one terminal unit
DPCV: Zone control
for several fancoils
Heating/
cooling
station
Zone 1
Zone 2
Zone 3
Application
-variable flow systems
AB-PM DN 40 to 100 is the ideal solution for
applications where a so called staged installation,
hand over and commissioning is used. In such
cases, the 1
st
stage is installation of backbone
piping without terminal units. AB-PM is used as
DPCV with flow limitation, ensuring the specified
design pressure and flow to each zone. The 2
nd
stage is then the installation of terminal units.
Typical applications are shopping malls and shell
& core office buildings.
The AB-PM ensures the required flow for each
zone and maintains hydronic balance in the
system.
In the 2
nd
stage of commissioning the installation
of terminal units can be done. Optionally the
AB-PM can be changed from differential pressure
controller to pressure independent control valve.
This allows flexibility when designing the zones.
If only one terminal unit is used in the zone, the
AB-PM as a PIBCV can be used to control that
unit and no additional valves are needed.
Zone 4
Zone 5
Zone 6