Krom Schroder VGBF Series User manual

DK S N P GR
➔www.docuthek.com
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TR CZ PL RUS H
© 2018 Elster GmbH · Edition 03.18
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.4
The following chapters have been changed:
– Checking the usage
– Installation
– Tightness test
– Maintenance
– Certification
Operating instructions
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Translation from the German
Safety
Contents
Gas pressure regulators VGBF
Gas pressure regulators VGBF............
Contents ..............................
Safety.................................
Checking the usage .....................
Intended use ...........................2
Type code .............................2
Part designations ........................2
Installation ............................
Installing the impulse line ................
Tightness test .........................
Changing the outlet pressure pd..........4
Checking the function ...................4
Replacing the spring ....................4
Maintenance ...........................5
Technical data .........................5
Designed lifetime ........................5
Logistics ..............................5
Certification ...........................6
Declaration of conformity ..................6
Eurasian Customs Union ..................6
Spring table............................6
Contact ...............................6

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Checking the usage
Intended use
The gas pressure regulator VGBF serves to maintain
a constant outlet pressure pddespite changing gas
flow rates and inlet pressures puin gas pipelines.
This function is only guaranteed when used within
the specified fields of application – see page 5
(Technical data).
Any other use is considered as non-compliant.
Type code
Code Description
VGBF Gas pressure regulator
5 – 50 Nominal size
R
F
Rp internal thread
Flange to ISO 7005
05
0
40
pu max. 500 mbar
pu max. 1 bar
pu max. 4 bar
-
-
Screw plug at the inlet
Screw plug at the inlet and outlet
V
Material for wetted parts:
Viton (without approval)
Medium: air and aggressive gases
(check compatibility with Viton)
Part designations
VGBF..FVGBF..R
10
11
2
3
3
4
4
5
6
6
7
7
8
8
99
2
Cover cap and adjusting screw
Breather screw
Impulse line connection (not on VGBF..05)
4Outlet
5Outlet (pd) measuring connection
6Arrow of direction of flow
7Inlet (pu) measuring connection
8Inlet
9Type label
0 Damping valve for VGBF 40 – 100..40
Inlet pressure pu, outlet pressure pdand ambient
temperature: see type label.
Vor dem Öffnen Feder
entspannen!
Release spring
before opening!
Avant d’ouvrir le dôme,
détendre le ressort!
VGBF
CE: 0085AQ0973
Installation
CAUTION
Please observe the following to ensure that the
gas pressure regulator is not damaged during the
installation:
– Install the unit free of mechanical stress.
– Do not clamp the unit in a vice or use it as a
lever. Risk of external leakage.
– Sealing material, cuttings and other impurities
must not be allowed to get into the regulator
housing.
– The installation location must be dry. Do not
store or install the unit in the open air.
– Dropping the device can cause permanent dam-
age. In this event, replace the entire device and
associated modules before use.
– Installation in the horizontal position, never up-
side down. VGBF 15 – 50 can also be installed
in the vertical position.
▷The outlet pressure pdis set at the factory with
the spring dome pointing vertically upwards.
VGBF 15 – 50: if installed with the spring dome
in the horizontal position, check and adjust the
outlet pressure pd, see page 4 (Changing
the outlet pressure pd).
▷ The housing must not touch any surrounding walls.
Minimum clearance 20 mm. Ensure that there is
sufficient space for installation and adjustment.
 Install a filter upstream of the unit, in order to
protect it against impurities in the pipeline.
VGBF..F
42 3
VGBF..R
42 3
5

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Installing the impulse line
VGBF 40 – 50..05 for 500 mbar
▷No external impulse line required. VGBF..05 fea-
tures an internal feedback function.
VGBF 40 – 00..40 for 4 bar
▷In order to avoid possible oscillations, a damp-
ing valve should be fitted. The damping valve is
secured to the spring dome with an adhesive
strip on delivery.
▷Impulse line: 12 × 1.5 mm.
VGBF 40 – 00
31 2
54 Push union
nut and
compression
fitting onto
the impulse
line.
VGBF 5 – 00..0 for  bar and
VGBF 5 – 00..40 for 4 bar
6 Install the impulse line and seal with an approved
sealing material.
VGBF 5 – 5R
Rp 1/4
5xDN
VGBF 40 – 50
5xDN
Rp 3/8
Tightness test
WARNING
If gas-filled spaces have been opened, check them
for tightness.
 Block the pipeline at the inlet and outlet.
 Slowly apply inlet pressure pu.
(pu≤ 1.5 × pu max., see type label)
 Slowly apply outlet pressure pd.
(pd≤ 1.5 × pd, see type table)
CAUTION
– First apply the inlet pressure p
u
– then the outlet
pressure pd.
– The inlet pressure pumust always be equal to
or higher than the outlet pressure pd.
– In the event of non-compliance with the se-
quence, the inlet pressure compensation dia -
phragm will reverse.
1. 2.
pupd
2. 1.
pupd
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76
98
1110
 Relieve the outlet pressure pd.
 Relieve the inlet pressure pu.

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Changing the outlet pressure pd
▷The outlet pressure pdis set at the factory with
the spring dome pointing vertically upwards. If
the VGBF is installed with the spring dome in
the horizontal position, check and adjust the
outlet pressure pd.
▷Use the test points on the unit only for measure-
ments of zero flow or very slight flow.
0
pd
-+
6 mm
21
43
5 Clearly mark the adjusted value of the outlet
pressure pdon the type label.
Checking the function
 Request different outputs on the burner in order
to change the flow rate.
 Close the manual valve at the inlet a little in order
to change the inlet pressure pu.
▷Despite changing flow rates and inlet pressures
pu (within the capacity range of the VGBF), the
outlet pressure pdmust remain constant
(±10–15%).
 Reduce the capacity to low-fire rate and close
the valve downstream of the VGBF.
▷ Approx. 30 seconds after the valve has been
closed, the outlet pressure pdshould not in-
crease significantly.
Check the tightness of the VGBF during operation
to detect possible leaks due to hardened rubber
materials.
54
6 If a leak is found, replace the rubber materials.
▷Selecting spare parts:
see www.adlatus.org, Part Detective.
7 Then check for tightness once again.
Replacing the spring
 Choose a spring according to the outlet pressure
range (see page 6 (Spring table)).
 Remove the cover cap.
WARNING
Risk of injury!
– The taut spring can pop out when opening the
spring dome. Therefore, decompress the spring
as far as it will go before opening. Then turn
back 5 × to relax the spring counter bearing.
6 mm
5x
53 4
7 86
VGBF 5 – 50
9 Turn down the spring counter bearing slightly.
10 11
 Ensure that the guide grooves and bars engage
in each other.
VGBF 65 – 50
9 Turn down the spring counter bearing slightly.
10 11
 Ensure that the guide groove and the cylinder
engage in each other.
VGBF 5 – 50
-+
6 mm
0
pd
1413
5 Screw on cover cap.
6 After inserting the spring, take the spring’s label
from the packaging and stick it below the type
label on the pressure regulator.
7 Clearly mark the adjusted value of the outlet
pressure pdon the type label.

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Maintenance
In order to ensure smooth operation, check the tight-
ness and function of the gas pressure regulator every
year, or every six months if operated with biogas, see
page 4 (Checking the function) and page 3
(Tightness test).
▷ Spare parts, see www.adlatus.org, PartDetective.
▷If gas-filled space has been opened, check the
tightness and function, see page 3 (Tightness
test) and page 4 (Checking the function).
Technical data
Gas type: natural gas, town gas, LPG (gaseous)
and biogas, VGBF..V for air.
Outlet pressure ranges:
The outlet pressure range is achieved through the
use of different springs (see page 6 (Spring
table)).
Rp 1/4 connection for test points or even for a
pilot gas line:
at the inlet: VGBF 15 and 25,
at inlet and outlet: VGBF 40 – 150.
Ambient temperature: -15 to +60°C,
VGBF..V: 0 to 60°C.
No condensation permitted.
Long-term use in the upper ambient temperature
range accelerates the ageing of the elastomer ma-
terials and reduces the service life (please contact
manufacturer).
Storage temperature: -15 to +40°C,
VGBF..V: 0 to 40°C.
Strainers that are possibly fitted serve as flow
conditioners.
Housing: aluminium,
diaphragms: NBR or Viton,
valve seat: aluminium,
valve stem: aluminium,
valve disc: vulcanized NBR or Viton seal.
Internal thread: Rp to ISO 7-1,
flanged connection: PN 16 to ISO 7005,
DN 15 – 50 with NPT thread,
DN 50 – 100 available with ANSI flange.
Impulse line connections: NPT.
Weight [kg]:
Type Weight Type Weight
VGBF 15R 0.9 VGBF 65F 12.0
VGBF 25R 1.9 VGBF 80F 16.1
VGBF 40R 2.9 VGBF 100F 26.0
VGBF 40F 4.8 VGBF 150F 46.5
VGBF 50F 7.7
VGBF..0
Max. inlet pressure pu max.: 1 bar.
Feedback via impulse line:
Rp 1/4 connection for DN 15 and 25,
Rp 3/8 connection for DN 40 – 150.
EN 334, Accuracy Class AC 10, Lock up pressure
class SG 30.
VGBF..40
Max. inlet pressure pu max.: 4 bar.
Feedback via impulse line:
Rp 1/4 connection for DN 15 and 25,
Rp 3/8 connection for DN 40 – 100.
EN 334, Accuracy Class AC 10, Lock up pressure
class SG 30.
VGBF..05
Max. inlet pressure pu max.: 500 mbar.
Internal feedback.
EN 88, Class A, Group 2.
Designed lifetime
This information on the designed lifetime is based on
using the product in accordance with these operating
instructions. Once the designed lifetime has been
reached, safety-relevant products must be replaced.
Designed lifetime (based on date of manufacture) in
accordance with EN 13611 and EN 88 for VGBF:
15 years.
You can find further explanations in the applicable
rules and regulations and on the afecor website
(www.afecor.org).
This procedure applies to heating systems. For
thermoprocessing equipment, observe local regu-
lations.
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 (Part designa-
tions)). Report any transport damage immediately.
Storage
Store the product in a dry and clean place.
Storage temperature: see page 5 (Technical data).
Storage time: max. 6 months before using for the
first 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.

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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.
Elster GmbH
Strotheweg 1, D-49504 Lotte (Büren)
Tel. [phone]
Fax [phone]
[email protected], www.kromschroeder.com
Spring table
Outlet pressure
pd[mbar]
Order No. Marking
VGBF 15 VGBF 25 VGBF 40 VGBF 50
5 – 12.5 75421911 75421961 75421961 75422031 –
10 – 30** 75421921 75421971 75421971 75422041 red
25 – 45 75421931 75421980 75421980 75422051 yellow
40 – 60 75421941 75421990 75421990 75422061 green
55 – 75 75421951 75422000 75422000 75422071 blue
70 – 90 75442046 75422010 75422010 75422081 black
85 – 105 75442047 75422020 75422020 75422091 white
100 – 160 75442048 75438978 75438978 75438981 black/red
150 – 230 75442049 75438979 75438979 75438982 black/yellow
220 – 350 75442050 75438980 75438980 75438983* black/green
Outlet pressure
pd[mbar]
Order No. Marking
VGBF 65 VGBF 80 VGBF 100 VGBF 150
5 – 12.5 75426160 75426230 75426310 75426450 –
10 – 30** 75426170 75426240 75426320 75426460 red
25 – 45 75426180 75426250 75426330 75426470 yellow
40 – 60 75426190 75426260 75426340 75426480 green
55 – 75 75426200 75426270 75426350 75426490 blue
70 – 90 75426210 75426280 75426360 75426500 black
85 – 105 75426220 75426290 75426370 75426510 white
100 – 160 75446329 75438984 75438987 75438990 black/red
150 – 230 –75438985 75438988 –black/yellow
220 – 350 –75428986 75438989 –black/green
* Spring set comprising two springs.
** Standard spring
Mark the new outlet pressure on the type label – adhesive label supplied.
Certification
Declaration of conformity
We, the manufacturer, hereby declare that the prod-
uct VGBF with product ID No. CE-0085AQ0973 com-
plies with the requirements of the listed Directives
and Standards.
VGBF 15 to VGBF 150:
Directive:
– 2009/142/EC – GAD (valid until 20 April 2018)
Regulation:
– (EU) 2016/426 – GAR (valid from 21 April 2018)
Standards:
– DIN EN 88-1:2011
– DIN EN 88-2:2008
– DIN EN 334:2009
VGBF 100F40:
Directive:
– 97/23/EC
The relevant product corresponds to the tested type
sample. The production is subject to the surveil-
lance procedure pursuant to Directive 2009/142/EC
AnnexII paragraph 3 (valid until 20 April 2018) and
to Regulation (EU) 2016/426 Annex III paragraph3
(valid from 21 April 2018) and for VGBF 100F40 ac-
cording to annex III, module D1 of Directive 97/23/EC.
This declaration of conformity is issued under the
sole responsibility of the manufacturer.
Elster GmbH
Scan of the Declaration of conformity (D, GB) – see
www.docuthek.com
Eurasian Customs Union
The product VGBF meets the technical specifications
of the Eurasian Customs Union.
Contact