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Danfoss Heating - Hydronic System Designs: HVAC

Hydronic Systems - Danfoss Heating - Variable Flow

AB-PM Hydronic Balancing & Control

Allow for great zone flexibility in commercial use.

When only one terminal unit is used in the zone, the AB-PM acts as a Pressure Independent Balancing Control Valve (PIBCV) that can be used to control that unit meaning no additional valves are needed.

Application for Variable Flow Systems

AB-PM DN 40-100 should be mounted in the return pipe.

The arrow on the valve body should correspond with the flow direction of the medium.

The impulse tube should be connected to the supply pipe using the included 1/4”-1/16” adaptor.

Product Characteristics

  • Pressure class: PN16
  • Maximum pressure drop across AB-PM: 4 bar
  • Temperature range: -10 to 120°C
  • Installation: in return pipe with connection via impulse tube to flow or return pipe
  • Setting range: Flow: 40-100%
  • Nominal flow at factory setting Δpr 25 kPa:
    • 5000 l/h (DN40)
    • 6500 l/h (DN50)
    • 16800 l/h (DN65)
    • 19600 l/h (DN80)
    • 21000 l/h (DN100)
  • Minimum differential pressure across valve and zone at factory setting:
    • 45 kPa (DN40, DN50)
    • 60 kPa (DN65-100)

DSE Flex, variable flow

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Capswood, Oxford Road

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DSE Flex

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