Data sheet
AB-PM DN 40-100
VD.HR.D1.02 | 3
© Danfoss | 2018.01
Alternative
PIBCV
+
003Z0691
003L8151
Fig. 1 AB-PM can be connected to flow or return with
impulse tube
Impulse tube connected to flow
Impulse tube connection
DPCV
003L8151
Impulse tube connected to return
PIBCV
003L8151
Mounting
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 ¼”-1/16”
adaptor (
003L8151
).
Alternatively, the impulse tube can be connected
to a partner valve, such as ASV-BD or MSV-F2
1)
.
Using a partner valve offers additional service/
troubleshooting functions such as flow
verification, shut-off etc.
If the impulse tube is connected to the supply
pipe the AB-PM functions as a differential
pressure controller with flow limitation. The
impulse tube can also be connected to the
return pipe (upstream from the AB-PM) or to
the red test plug with adapter
003Z0691
. In
that case the AB-PM will function as a pressure
independent control valve with 100% authority.
1)
For information on partner valve see ASV and MSV-F2 datasheet
Service and trouble
shooting
The valve can be manually shut off for service
purposes, up to 16 Bar.
AB-PM is equipped with 3 test plugs for flow
verification, service and trouble shooting.
When filling the system make sure to open the
supply valve before opening the return valve.
The pressure on the upper side of the membrane
(impulse tube) should always be higher than the
pressure on the lower side of the membrane (at
the valve)
Flush the impulse tube and ensure the HVAC
system is de-aired before starting the system.
For the setting procedure please refer to the
operating instructions enclosed with the
product.
It is recommended that an FV filter be installed in
the system supply pipe.
Commissioning
Please check the following if the valve does not
function correctly:
1. Is the flow direction through the valve correct?
2. Is the impulse tube fitted correctly and are any
test plugs open?
3. Is the valve shut-off open? (see operating
instructions)
4. Is the available pressure big enough?