Danfoss PN 16 Operating Manual - Page 8

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AFQM 2, AFQMP 2

ENGLISH

Safety Notes

Prior to assembly and

commissioning to avoid injury of

persons and damages of the

devices, it is absolutely necessary to

carefully read and observe these

instructions.

Necessary assembly, start-up, and

maintenance work must be performed

only by qualified, trained and authorized

personnel.

Prior to assembly and maintenance work

on the controller, the system must be:

- depressurized,

- cooled down,

- emptied and

- cleaned.

Please comply with the instructions of the

system manufacturer or system operator.

Disposal instruction

This product should be dismantled

and its components sorted, if possible,

in various groups before recycling or

disposal.

Always follow the local disposal regulations.

Definition of Application

The controllers AFQM 2 and AFQMP 2

are used in connection with electrical

actuators AMV(E) 55/56 and 65x for flow

limitation and temperature control of

water and water-glycol mixtures for

heating, district heating and cooling

system.

The technical data on the rating plates

determine the use

Mounting ❶

Permissible Installation Positions

All installation positions are allowed

Electrical actuator

Installation positions for electrical

actuators AMV(E) have to be observed

as well. Please see relevant Data Sheet.

Place and Scheme of Installation ❷

① Return flow

② Supply

Valve Installation ❸

1. Install strainer ① in front of valve.

2. Rinse system before installing valve.

3. Observe flow direction ② on the valve

body.

Flanges ③ in the pipeline system must

be in parallel direction, the sealing

surfaces must be clean and

undamaged.

4. Install valve.

5. Tighten screws crosswise in 3 steps up

to the maximum torque.

8 | © Danfoss | 2020.11

Actuator and Valve Mounting ❹

AMV(E) 55/56

1. Remove the connector ① by release the

bolt of actuator using Allen key 4 mm.

2. Tighten union nut ②, torque 3 Nm.

3. Install the connector ① again to

connect the spindle of actuator and

valve.

Read Instructions of AMV(E) 55/56 for

wiring and setting.

AMV(E) 65X

1. Install the actuator to the valve.

2. Tighten the nuts ② to fix the ring.

3. Connect stems ①.

4. Tigten the connector ① again to

connect the spindle of actuator and

valve.

Read Instructions of AMV(E) 65x for wiring

and setting.

Insulation

❺

DO NOT insulate the electrical

actuator!

The pressure actuator may be

insulated up to a medium temperature of 100 °C.

Leak and Pressure Tests ❻

Prior to pressure tests it is

absolutely necessary to open the

valve.

Non-compliance may cause damages at

the controller AFQM 2/AFQMP 2.

Open valve by means of the actuator:

AMV(E) 55/56

Adjust valve position manually using an

Allen key (See instructions of AMV(E) 55/56

for manual operation).

AMV(E) 65x

Manual adjustment of the valve depend

on type of the AMV(E) 65x actuator (See

instructions for particular type of AMV(E)

65x for manual operation).

When the impulse tube is installed, the

max. operating pressure of *16 bar

(PN 16) and *20 bar (PN25) must

NOT be exceeded.

*DN depended

Non-compliance may cause leaks at the

actuator.

In case of higher test pressures, remove

impulse tubes ⑧ at the valve.

Close connections at the valve with plug

G1/4 ISO 228 ⑨.

Observe nominal pressure ⑩ of the valve.

Max. test pressure is 1,5 × PN

Filling the System First Start-up ❼

First, ensure that valve is open. To open

the valve see section 5 and read

instructions for relevant type of the

actuator.

The pressure ② at the valve output may

exceed the pressure ① at the valve input

only insignificantly. Non-compliance may

cause damages at the Controller.

Differential Pressure Setting ❽

(only for AFQMP 2)

Set-point range see rating plate ①

2. Set flow rate on a motorized valve part to

about 50 %.

3. Adjustment:

• Turning to the right ② increases the set-

point (stressing the spring)

• Turning to the left ③ reduces the set-point

(un-stressing the spring)

• Set the differential pressure to the level

needed to reach desired maximum flow

4. The set-point adjuster ④ may be sealed.

5. Release the not yet used pointer ⑤, move it

to the set position and fix it with the screw

Flow Limitation Adjustment ❾

The connector between valve and actuator

should be released and the actuator

removed before the adjustment of flow

to prevent any possible damage to the

actuator.

The adjustment of the flow is made by

adjusting the valve stroke.

There are 2 possibilities:

1. Adjustment with adjustment diagram

see ❿ and ⓫.

2. Adjustment with heat meter, see ⓬.

Adjustment with adjustment

diagram ❿ ⓫

The system should not be in operation

for adjustment. Setting curves are of

informative nature. For more exact settings

use flow meter values.

Valve stroke adjustment ❾

1. Close valve by turning the adjusting

screw ① up to its stop.

2. Select diagram below necessary flow.

See AFQM 2/AFQMP 2 adjustment

diagrams ❿ ⓫.

Necessary flow

rate

Revolutions of adjust-

ing throttle

AQ30706665741801-010103