Elster Kromschroder Linear flow control VFC User manual

DK S N P GR
➔www.docuthek.com
D GB F NL I E
TR CZ PL RUS H
© 2016 Elster GmbH · Edition 01.16
Safety
Please read and keep in a safe place
Please read through these instructions
carefully before installing or operating. Following the
installation, pass the instructions on to the opera-
tor. This unit must be installed and commissioned
in accordance with the regulations and standards
in force. These instructions can also be found at
www.docuthek.com.
Explanation of symbols
• ,  ,  ,  ... = Action
▷= Instruction
Liability
We will not be held liable for damage resulting from
non-observance of the instructions and non-com-
pliant use.
Safety instructions
Information that is relevant for safety is indicated in
the instructions as follows:
DANGER
Indicates potentially fatal situations.
WARNING
Indicates possible danger to life and limb.
CAUTION
Indicates possible material damage.
All interventions may only be carried out by qualified
gas technicians. Electrical interventions may only be
carried out by qualified electricians.
Conversion, spare parts
All technical changes are prohibited. Only use OEM
spare parts.
Changes to edition 0.5
The following chapters have been changed:
– Checking the usage
– Installation
– Technical data
Contents
Operating instructions
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0548
Translation from the German
Linear flow control VFC
Linear flow control with
actuatorIFC
Linear flow control VFC..................
Linear flow control with actuatorIFC ......
Contents ..............................
Safety.................................
Checking the usage .....................
Type code .............................2
VFC part designations ....................2
IFC part designations .....................3
IC 30 part designations ...................3
Installation ............................
Wiring ................................4
Tightness test ..........................4
Setting the flow rate ....................4
Accessories ...........................5
Fastening set IC-BVG../VFC................5
Adapter set IC30/VFC....................5
Seal set for sizes 1 and 3 ..................5
Maintenance ...........................5
Technical data .........................5
Logistics ..............................5
Certification ...........................6
Declaration of conformity ..................6
Eurasian Customs Union ..................6
Contact ...............................6
Safety
Contents

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Checking the usage
VFC
The linear flow control is designed to adjust volumes
of gas and cold air on various appliances. The VFC
with actuator IC20/IC30/IC40 (IFC) is suitable for
regulating flow rates for control ratios up to 25:1
in modulating or stage-controlled combustion pro-
cesses.
Linear flow control VFC and actuator IC20 or IC40
can be supplied separately or assembled. IC30 is
supplied separately.
This function is only guaranteed when used within
the specified limits – see also page5 (Technical
data). Any other use is considered as non-compliant.
Type code
Code Description
VFC
IFC
Linear flow control
Linear flow control with actuator


Size 1
Size 3
TT-product
0
5
0
5
40
50
65
-
Inlet flange: DN 10 (3/8")
DN 15 (½")
DN 20 (¾")
DN 25 (1")
DN 40 (1½")
DN 50 (2")
DN 65 (2½")
no inlet flange
/0
/5
/0
/5
/40
/50
/65
/-
Outlet flange: DN 10 (3/8")
DN 15 (½")
DN 20 (¾")
DN 25 (1")
DN 40 (1½")
DN 50 (2")
DN 65 (2½")
no outlet flange
R
N
F
Rp internal thread
NPT internal thread
ISO flange
05 pu max. 500 mbar
-08
-5
-0
-5
-
-40
Cylinder size
P
M



4
-
Accessories, right, inlet
Plug
Pressure test point
Pressure switch for gas DG 17VC
Pressure switch for gas DG 40VC
Pressure switch for gas DG 110VC
Pressure switch for gas DG 300VC
No accessories
Code Description
P
M
-
-
-
-4
-
Accessories, right, outlet
Plug
Pressure test point
Pressure switch for gas DG 17VC
Pressure switch for gas DG 40VC
Pressure switch for gas DG 110VC
Pressure switch for gas DG 300VC
No accessories
The same accessories can be selected for the left-
or right-hand side.
/0
/40
Actuator IC 20
Actuator IC 40
-07
-5
-0
-60
Running time [s]/90°:
7.5
15
30
60
W
Q
A
Mains voltage:
230 V AC, 50/60 Hz
120 V AC, 50/60 Hz
100 – 230 V AC, 50/60 Hz


Torque:
2.5 Nm
3 Nm
T
E
D
A
Three-point step control
0 (4) – 20 mA, 0 – 10V
continuous control
Digital input
4 – 20 mA analogue input
R0 1000 Ohm feedback
potentiometer
no speci-
fication
-I
Mounting actuator with electrical
connection:
outlet side
inlet side
VFC part designations
1
2
3
Test point for inlet pressurepu
Test point for outlet pressurepd
Adjusting spindle

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IFC part designations
1
2
3
Actuator IC20/40
Linear flow control VFC
Fastening set IC20/40
IC 0 part designations
Actuator IC 30 is only supplied separately to linear
flow control VFC.
3
4
1
2
Actuator IC30
Position indicator
3 x M16 plastic cable glands (enclosed)
4Allen key (enclosed)
VFC type label
▷
Inlet pressurepu, differential pressuredp and
ambient temperature– see type label.
www.kromschroeder.com
Osnabrück, Germany
Tamb
pu max
dpmax
CE-0063CO1153
0°
30° 60°
90°
VFC
Installation
CAUTION
Please observe the following to ensure that the
VFC is not damaged during installation:
– Sealing material, thread cuttings and other im-
purities must not be allowed to get into the
housing. Install a filter or dirt trap upstream of
every control.
– The installation location must be dry. Do not
install the unit in the open air.
– Use approved sealing material only.
– Install the VFC in the pipe free of mechanical
stress.
– Do not clamp the unit in a vice or use it as a lever.
Only secure the flange by holding the octagon
with a suitable spanner. Risk of external leakage.
– Installation position for IFC../20 and IFC../40:
vertical or horizontal, never upside down.
– Installation position for VFC with IC30: as re-
quired.
– Max. inlet pressure pumax. 500mbar.
▷ The VFC and IC can be assembled before or
after the VFC has been installed in the pipework.
▷The fastening set for the assembly of VFC and
IC is delivered separately– see page5 (Ac-
cessories).
▷The IC may be installed rotated by 180°.
▷The mounted actuator IC must not be rotated.
▷ Actuator IC is supplied in the closed position(0°)
and linear flow controlVFC in the open posi-
tion(90°).
 In order to mount the actuator, turn the VFC to
the closed position(0°) manually.
Mounting IC 0 or IC 40
32

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Mounting IC 0
4
32
Installing the VFC with flanges in the pipe
> 20 mm
5 64
23 1
Installing the VFC without flanges in the pipe
> 20 mm
4 5 6
7 98
23 1
Wiring
Electrical connection of the IC, see enclosed Actua-
tor IC20/IC30/IC40 operating instructions or go to
www.docuthek.com.
Tightness test
▷Shut off the gas supply.
 Close off the outlet of the VFC with a blanking
plate or close the solenoid valve for gas down-
stream of theVFC.
The VFC is in the closed position once the IC has
been installed:
 Set the IC20, IC30 in Manual mode, or the
IC40 using BCSoft, to 100% open position, see
enclosed Actuator IC20/IC30/IC40 operating
instructions or go to www.docuthek.com.
N21,5 x pu max
3
4 Tightness OK: remove the blanking plate or open
the solenoid valve for gas downstream of the
VFC.
5 Once the tightness test has been carried out
successfully, move the VFC to the closed posi-
tion once more using the actuatorIC.
▷ Pipeline leaking: replace O-ring on flange, see
page 5 (Seal set for sizes 1 and 3). Then
check for tightness once again.
▷Unit leaking: remove the unit and return it to the
manufacturer.
Setting the flow rate
CAUTION
When setting a higher flow rate, do not turn the
adjusting spindle further than the stop (= maximum
flow rate). It must not be unscrewed completely.
The VFC is set to the maximum flow rate at the
factory.
▷
Check the VFC for tightness after each adjust-
ment of the adjusting spindle, see page 4
(Tightness test).
▷ The flow rate can be adjusted using the adjusting
spindle (2.5Allen key) in the base plate:
turning it clockwise will reduce the flow rate,
turning it anti-clockwise will increase the flow
rate.
–+
▷ The VFC is controlled by the IC, see enclosed
Actuator IC20/IC30/IC40 operating instructions
or go to www.docuthek.com.

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Accessories
Fastening set IC-BVG../VFC
For the assembly of VFC and IC20 or IC40. The
fastening set is fitted at the factory or delivered en-
closed as an additional item.
Order No.: 74921082
Adapter set IC0/VFC
For the assembly of VFC and IC30. The adapter set
is delivered enclosed as an additional item.
Order No.: 74340194
Seal set for sizes  and 
▷
When retrofitting accessories or a second
valVario control or when servicing, we recom-
mend replacing the seals.
A
C
B
A
D
▷Order No. for
size 1: 74921988,
size 3: 74921990.
▷Scope of delivery:
A2 x O-rings (flange),
B2 x O-rings (pressure switch),
for test point/screw plug:
C2 x sealing rings (flat sealing), 2x profiled seal-
ing rings,
D1 x double block seal; this is not required for
VFC.
Maintenance
In order to ensure smooth operation, check the tight-
ness and function of the VFC every year, or every six
months if operated with biogas.
▷After carrying out the maintenance work, check
for tightness, see page4 (Tightness test).
▷
The VFC suffers little wear and requires little
servicing.
Technical data
Gas type: natural gas, LPG (gaseous), biogas
(max. 0.1 %-by-vol. H2S) or clean air; other types
of gas on request. The gas must be dry in all
temperature conditions and must not contain
condensate.
Control ratio: 25:1.
Leakage rate: < 2% of kVS value.
Max. inlet pressure pumax.: 500 mbar (7.25 psi).
Running times:
IC 20: 7.5 s, 15 s, 30 s, 60 s
IC 30: 30 s, 60 s
IC 40: 4.5 s – 76.5 s.
Connection flanges: Rp internal thread pursuant
to ISO7-1.
Housing material: aluminium,
control cylinder: aluminium,
flow restricting cylinder: POM/aluminium,
seal: HNBR/NBR.
Ambient temperature: -20 to +60°C (-4 to +140°F).
Storage temperature: -20 to +40°C (-4 to +104°F).
Logistics
Transport
Protect the unit from external forces (blows, shocks,
vibration). On receipt of the product, check that the
delivery is complete, see page2 (VFC part des-
ignations). Report any transport damage immediately.
Storage
Store the product in a dry and clean place.
Storage temperature: see page5 (Technical data).
Storage time: 6months in the original packaging
before using for the first time. If stored for longer
than this, the overall service life will be reduced by
the corresponding amount of extra storage time.
Packaging
The packaging material is to be disposed of in ac-
cordance with local regulations.
Disposal
Components are to be disposed of separately in
accordance with local regulations.

Elster GmbH
Postfach 28 09, D-49018 Osnabrück
Strotheweg 1, D-49504 Lotte (Büren)
T [phone]
F [phone]
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Contact
If you have any technical questions, please contact
your local branch office/agent. The addresses are
available on the Internet or from ElsterGmbH.
We reserve the right to make technical modifications
in the interests of progress. [e-mail], www.kromschroeder.com
Certification
Declaration of conformity
We, the manufacturer, hereby declare that the product
VFC, marked with product ID No. CE-0063CO1153,
complies with the essential requirements of the fol-
lowing Directives and Standards:
Directives:
– 2009/142/EC
Standards:
– EN 13611
The relevant product corresponds to the type tested
by the notified body 0063.
The production is subject to the surveillance proce-
dure pursuant to Directive 2009/142/EC AnnexII
paragraph3.
Elster GmbH
Scan of the Declaration of conformity (D,GB)– see
www.docuthek.com
Eurasian Customs Union
The product VFC meets the technical specifications
of the Eurasian Customs Union.
Contact