Danfoss VX Solo II Series Instructions For Installation And Use Manual page 23

Instructions for installation and use
Differential pressure controller TD200
This type of differential pressure controller is preset from factory and
should not be adjusted afterwards.
Differential pressure controller AVPB-F
The self-acting differential pressure controller AVPB-F with flow
limitation reduces the fluctuating pressure in the district heating
network to a small and invariable operating pressure in the substa-
tion and thereby ensures the best possible operating conditions.
The control valve opens on falling differential pressure to maintain
constant differential pressure, and closes on rising differential pres-
sure or when set max. flow is exceeded.
The differential pressure controller is preset from factory and should
not be adjusted afterwards.
The controller has a control valve with adjustable flow restrictor and
flow setting is being done by the adjustment of the flow restrictor
position.
The controller is equipped with excess pressure safety valve, which
protects the actuator from too high differential pressure.
Please see enclosed instructions,
AVPB-F
Danfoss District Energy
VX Solo II substations
Flow setting
Flow setting is being done by the adjust-
ment of the flow restrictor position.
VI.GP.P2.02
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DKDHR