6 | © Danfoss | 2020.12
AQ16278645877002-010201
AFQM, AFQM 6
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 6 and AFQM are used in
connection with electrical actuators AMV(E) 55,
65x and 85 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
DN 40-80 T
max
≤ 120 °C
①
The controllers can be installed with
(connection neck for) electrical actuator
oriented horizontal or upwards.
DN 40-80 T
max
> 120 °C, DN 100-250
②
The controllers can be installed with
(connection neck for) electrical actuator
oriented upwards.
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.
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.
AMV(E) 85/86
1. Remove the connector
①
by release the bolt
of actuator using Allen key 4 mm.
2. Put the actuator on the valve and fixed by
tight the screw
②
using Allen key 4 mm.
3. Install the connector
①
again to connect the
spindle of actuator and valve.
Read Instructions of AMV(E) 85 for wiring and
setting.
Insulation
DO NOT insulate the electrical
actuator!
The pressure actuator may be insulated
up to a medium temperature of 100 °C.
Leak and Pressure Tests
❺
Prior to pressure tests it is absolutely
necessary to open the valve.
Non-compliance may cause damages at the
controller AFQM.
Open valve by means of the actuator:
A
AMV(E) 55/56
Adjust valve position manually using an Allen
key (See instructions of AMV(E) 55/56 for manual
operation).
B
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).
C
AMV(E) 85/86
⑤
Remove grommets.
⑥
Push.
⑦
Adjust valve position manually.
See instructions of AMV(E) 85/86 about 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
❻
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.
Flow Limitation Adjustment
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
❽
.
2. Adjustment with heat meter, see
➒
.
Adjustment with adjustment diagram
❽
The system should not be in operation for
adjustment.
Valve stroke adjustment
❼
1. Close valve by turning the adjusting screw
①
up to its stop.
2. Select diagram below necessary flow. See
AFQM 6/AFQM adjustment diagrams
❽
.
No
Necessary
flow rate
Revolutions of
adjusting throttle
3. Turn adjusting screw
①
by the No number to
the right.
The adjustment of the valve stroke is
completed.
4. The adjusting screw may be sealed (drilling).
Adjustment with heat meter
❾
1. Operate actuator manually or by control
signal to retract the stem.
See the manual operation in instructions of
AMV(E) 55/56/65x/85/86 actuator.
2. Ensure that the system or a bypass
②
is
completely open.
3. Observe indicator of heat meter.
4. Increase of flow
③
.
5. Reduction of flow
④
.
6. As soon as the heat meter shows the
required value, shortly throttle the system
and re-open.
7. Verify flow.
