Danfoss AB-PM DN 50 Технічний паспорт - Сторінка 3

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Data sheet

Mounting

Commissioning

Service and trouble

shooting

AB-PM DN 40-100

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

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.

For information on partner valve see ASV and MSV-F2 datasheet

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.

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.

Impulse tube connection

003L8151

Impulse tube connected to flow

Impulse tube connected to return

Alternative

Fig. 1 AB-PM can be connected to flow or return with

impulse tube

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?

DPCV

PIBCV

003L8151

PIBCV

003L8151

003Z0691

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