Danfoss AFP 2/VFG 22 (221) User manual

© Danfoss | 2018.01 VI.LI.H1.02 | 1
ENGLISH Differential Pressure Controller AFP 2 / VFG 22 (221) www.danfoss.com Page 7
AFP 2 / VFG 22 (221) DN15-250
Operating Guide
This document is included in the scope of delivery. The latest document version is available on virtus.danfoss.com

2 | © Danfoss | 2018.01 VI.LI.H1.02
AFP 2 / VFG 22 (221) DN15-250
Tmax ≤ 150 °C
①
Tmax > 150 °C
②
5-95 % RH
no condensing
MAINTENANCE
FREE
AF (2×)*
DN 15-50
Tmax = 150 °C
Bellows
VFG2, VFG21
AFP 2 AFP 2
1×
V1, V2 (630 cm2)
AF (2×)*
Bellows
VFG2
DN 15-50
Tmax = 200 °C
Piston
VFG22, VFG221
DN 65-250
Tmax = 150 °C
AF (2×)*
AFP 2 AFP 2
1×
V1, V2 (630 cm2)
AF (2×)*
DN 65-250
Tmax = 200 °C
Bellows
VFG 22
*Available from Q4 2018
adapter 003G1780adapter 003G1780
3 mm SW13, 19, 36, 46
❷
❶

© Danfoss | 2018.01 | 3
VI.LI.H1.02
AFP 2 / VFG 22 (221) DN15-250
①①
②
③
②
①
②
①SW46
Max 100-120 Nm
③
②
Turn
till
end
Pull out
④
⑤
⑦
Hold
Fix
Release
for ½ turn
⑥
❸
❹
❺

4 | © Danfoss | 2018.01 VI.LI.H1.02
AFP 2 / VFG 22 (221) DN15-250
①
①
G ⁄
AF
⑤
③
①
②
④
①
②
④
②
②
②
②
④
③
②
②
③
T < 120 °C T > 120 °C
⑧
T > 150 °C
⑥
⑦
SW 19
40 Nm
SW 13
SW 19
40 Nm
❿
❾
❽
❻❼

© Danfoss | 2018.01 | 5
VI.LI.H1.02
AFP 2 / VFG 22 (221) DN15-250
②
EN - GJL-250
(GG-25)
VFG/VFGS PN 16
VFG PN 25
EN-GJS-400
(GGG-40.3)
VFG PN 40
EN-GP-240-GH
(GS-C 25)
③
①
②
⑥
⑤
④
①
①
④
③
②
①
①∆p = 1-3 bar
Type: AFP 2
Code Nr.: 003G5650
∆p: 1-3 bar,
Tmax: 150 °C
Area (cm2): 80
SW46
Max 100-120 Nm
①
②
Turn
till
end
Hold
Fix
Release
for ½ turn
⑤
④
Pull out
③
⑥
⓫
⓬
①
⓭

6 | © Danfoss | 2018.01 VI.LI.H1.02
AFP 2 / VFG 22 (221) DN15-250
298
Ø 140
Seal pot V2
78
110
SW 22
ø60
Shut off valveCompression fitting
SW19
40
Ø10
G⁄
L
H
B
VFG DN 15-50
240
Ø 89
Seal pot V1
⑥
⑤
⑦
L
B
H
VFG 22(1) DN 65-250
HV
⑧
2x
SW36
SW36
AFP 2 Actuator
ØA
HA
⓮
DN 15 20 25 32 40 50
L
mm
130 150 160 180 200 230
B213 213 239 239 241 241
H267 267 304 304 323 323
Size
ØA HA
Weight
(cm2)
mm
(kg)
80 175 485 10
160 228 505 13.5
320 295 505 20.5
630 300 630 36
Total installation height of the controller (VFG 22(1) valve
+ AFP 2 pressure actuator) is sum of HVand HA
⓭
DN L B H HV
Weight
PN 16 PN 25 PN 40
mm
kg
65 290 220 345 285 24 25 26
80 310 220 345 285 29 30 32
100 350 260 405 345 47 48 50
125 400 260 425 365 60 62 60
150 480 325 515 455 105 108 130
200 600 360 605 545 204 210 260
250 730 420 675 615 343 353 375
Adapter
003G1780

© Danfoss | 2018.01 | 7
VI.LI.H1.02
AFP 2 / VFG 22 (221) DN15-250
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 instructions
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 controller is used for differential pressure
control of water and water glycol mixtures for
heating, district heating and cooling systems.
The technical data on the label plates determine
the use.
Scope of Delivery ❶
*) Impulse tube AF, accessory
Assembly
Admissible Installation Positions ❷
①media temperatures up to 150 °C:
Can be installed in any position.
②media temperatures > 150 °C.
Installation permitted only in horizontal
pipelines with the actuator oriented
downwards.
Installation Location and Installation
Scheme ❸
Return mounting ①
Flow mounting ②
Valve Installation ❹
1. Install strainer ①before the controller.
2. Rinse system prior to installing the valve.
3. Observe flow direction ②on valve body.
Flanges ③in the pipeline must be in
parallel position and sealing surfaces
must be clean and without any
damage.
4. Install valve.
5. Tighten screws crosswise in 3 steps up to the
max. torque.
Actuator Installation ❺
The actuator stem must be screwed
into the valve stem.
1. Remove the spindle protection cup
2. Align the actuator stem with the valve stem,
connect both stems and turn gently the whole
pressure actuator clockwise with both hands,
until the stems are fully connected (valve stem
fully screwed into the actuator stem).
3. Release the uninon nut by pulling out the
blocking spring.
4. Tight the union nut
5. Release the pressure actuator by turning it
counter clockwise for approximately half a
turn.
6. Observe the position of impulse tubes
connection to the valve and align the
actuator accordingly.
7. Hold the actuator in the position and tight
the union nut to the valve with 100- 120 Nm
torque.
Impulse Tube mounting ❻
• Which impulse tubes to use?
The impulse tube set AF (2×) ❻① can be
used: Order No.: 003G1391
or use the following pipes:
Stainless steel Ø 10×0.8
DIN 17458,
DIN 2391
Steel Ø 10×1 DIN 2391
Copper Ø 10×1 DIN 1754
• Connection of impulse tubes ❻② in the
system
Installation in return flow ③
Installation in supply flow ④
Connection to the valve ❼
1. Remove plug ①at the valve.
2. Screw in threaded joint G 1/4 ②with copper
seal, Torque 40 Nm.
- or -
Connection to the Pipeline ❽①
No connection downwards/upwards ②, could
bring dirt/air into an impulse tube.
1. Cut pipe in rectangular sections ③and
deburr.
2. For copper pipe:
insert sockets ④on both sides.
3. Verify the correct position of the cutting
ring ⑤.
4. Press impulse tube ⑥into the threaded joint
up to its stop.
5. Tighten union nut ⑦Torque 40 Nm.
When installing seal pots ❽⑧, please
observe the Installation Instructions
for the seal pots.
Insulation ❾
For media temperatures up to 120 °C the
pressure actuator may be insulated ①.
Dismounting ❿
Danger
Danger of injury by hot water
Prior to dismounting depressurize system or
use shut off valves on the impulse tubes!
Carry out dismounting in reverse order to
mounting.
Leak and Pressure Test ⓫
To prevent damages on the
diaphragm pressure must be
constantly and simultaneously
increased at the + and − connection ①
until the max testing pressure is
reached.
In case of higher test pressures, remove impulse
tubes at the pipelines ①.
Observe nominal pressure ②of the valve.
Max. test pressure must not exceed the plant
testing pressure and must always be lower than
1.5 × PN
Non-compliance may cause damages at the
actuator or valve.
Filling the System, Start-up ⓬
The return flow pressure ①must not
exceed the supply flow pressure ②.
Non-compliance may cause damages at the
controller ③.
1. Open shut-off devices ④that are possibly
available at the impulse tubes.
2. Slowly open valves in the system.
3. Slowly open shut-off devices ⑤in the supply
flow.
4. Slowly open shut-off devices ⑥in the return
flow.
Putting out of Operation
1. Slowly close shut-off devices ⑤in the supply
flow.
2. Slowly close shut-off devices ⑥in the return
flow.
Differential Pressure Setting ⓭
Set-point range see rating plate ①
1. Start-up of system, see section ⓬.
2. Set flow rate on a motorized valve ③over
which the differential pressure is controlled,
to about 50 % ②
3. Adjustment
• Observe pressure indicators ④.
• Turning to the right ⑤increases the set-
point (stressing the spring)
• Turning to the left ⑥reduces the
set-point (un-stressing the spring)
4. The set-point adjuster ⑦may be sealed.
5. Release the not yet used pointer ⑧, move it
to the set position and fix it with the screw
Dimensions ⓮
Flanges:connection dimensions acc. to DIN 2501, seal form C

8 | © Danfoss | DHS-SRMT/SI | 2018.01 73695590 / VI.LI.H1.02
Danf
oss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products
already on order pro
vided that such alterations can be made without subsequential changes being necessary eady agreed.
All trademarks in this material are property of the respec
tive companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.
AFP/VFG 2(21) DN 15-250