Krom Schroder GFK Series User manual

DK S N P GR
➔www.docuthek.com
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TR CZ PL RUS H
Cert. version 10.17
© 2017 Elster GmbH · Edition 10.17
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
• , 1 ,  ,  ... = 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 06.14
The following chapters have been changed:
– Installation
– Maintenance
– Certification
– Filter pads
Contents
Operating instructions
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441001
Translation from the German
Gas filters GFK
Gas filters GFK .........................1
Contents ..............................1
Safety.................................1
Checking the usage .....................
Type code .............................2
Part designations ........................2
Type label..............................2
Installation ............................
Tightness test ..........................
Maintenance ...........................
Cleaning or replacing the filter pad ...........3
Technical data .........................
Logistics ..............................4
Certification ...........................4
Declaration of conformity ..................4
Filter pads .............................4
Contact ...............................4
Safety
Contents

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Checking the usage
Gas filter GFK is used for filtration of the fuel gas
and combustion air supply to all gas consuming
appliances.
This function is only guaranteed when used within the
specified limits– see page3 (Technical data). Any
other use is considered as non-compliant.
Type code
Code Description
GFK Gas filter
15 – 50 Nominal size
TT-product
R
F
N
A
Rp internal thread
Flanged connection to ISO 7005
NPT internal thread
ANSI flange
10
40
60
Max. inlet pressure pumax
1bar (14.5 psig)
4bar (58 psig)
6bar (87 psig)
-
-6
Screw plug at the inlet
and outlet
Pressure test point at the inlet
and outlet
Part designations
GFK..FGFK..R
11
3
22
1Housing cover
Lower housing section
Pressure test point
Type label
▷Max. inlet pressure: see type label.
D-49018 Osnabrück, Germany
GFK pu max
Installation
CAUTION
Dropping the device can cause permanent dam-
age. In this event, replace the entire device and
associated modules before use.
▷ Installation position: any, in horizontal or verti-
cal pipework – recommended: housing cover
to the side.
▷ The housing must not be in contact with masonry,
minimum distance 20mm (0.79").
> 20 mm
▷ We recommend applying a protective coating
when installing in the open air.
GFK..R
2 31
4
GFK..F
2 31
Tightness test
1 To be able to check the tightness, shut off the
downstream pipeline close to the gas filter.
N2
≤
1,2 x pu max
32
4 Tightness OK: open the pipeline.
▷Pipeline leaking: replace the seal.

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Maintenance
CAUTION
In order to ensure smooth operation: clean or re-
place the filter pad of the GFK every year, or every
six months if operated with biologically produced
methane.
When cleaning or replacing the filter pad, no dirt
may contaminate the clean gas circuit.
▷The filter pad should be changed at a pressure
gradient ≥ 20 mbar (8"WC).
▷Pressure test points on the cover:
GFK 15 to 100:
Inlet side: Rp 1/8 pressure test nipple,
Outlet side: Rp 1/8 pressure test nipple.
GFK 125 to 250:
Inlet side: Rp 1/8 plug,
Outlet side: Rp 1/8 plug.
GFK 15T to 100T:
Inlet side: Rp 1/8 plug,
Outlet side: Rp 1/8 plug.
Recommended ∆pmax. = 20 mbar
Cleaning or replacing the filter pad
1 Shut off the gas supply.
5
2 3 4
8
6
7
10 119
Clean or
replace the
filter pad.
Fit the filter
pad into the
groove in the
cover.
▷Tighten screws in a crosswise fashion and pay
attention to the torque, see table:
Type Torque [Nm]
GFK 15 5
GFK 20 5
GFK 25 8
GFK 32 8
GFK 40 8
GFK 50 8
GFK 65 8
GFK 80 20
GFK 100 20
GFK 125 60
GFK 150 60
GFK 200 80
GFK 250 80
Checking tightness and function
▷
When replacing the filter pad, the gas-filled space
in the GFK is opened. Therefore, check for tight-
ness once the filter pad has been reinstalled.
1 To be able to check the tightness, shut off the
downstream pipeline close to the gas filter.
≤
1,2 x pu max
N2
1413
15 Tightness OK: open the pipeline.
Technical data
Gas type: natural gas, town gas, LPG (gaseous),
biologically produced methane and air.
Max. inlet pressure pu max:
GFK 15 to 250: 1 bar (14.5psig),
GFK 15R to 65R: 4 bar (60psig),
GFK 15TN to 100TN: 4 bar (60psig),
GFK 40F to 100F: 6bar (87 psig).
Storage temperature: -15 to +60°C (5 to 140°F).
Ambient temperature: -15 to +80°C (5 to 176°F).
Continuous operation at high temperatures ac-
celerates the ageing of elastomer materials.
Version to DIN 3386.
Housing material:
GFK 15 to 100: AlSi.
GFK 125 to 250: sheet steel.
Connection:
GFK..R: Rp internal thread connection to ISO7-1.
GFK..F: flanged connection to ISO 7005, PN 16.
GFK..N: NPT internal thread.
GFK..A: ANSI 150 flanged connection.
Filter pad: polypropylene fleece (standard 50μm).

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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
Contact
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 for GFK: 10 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3 (Technical data).
Storage time: 6months 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.
Certification
Declaration of conformity
We, the manufacturer, hereby declare that the prod-
uct GFK, marked with product ID No.0063AU1408,
complies with the essential requirements of the fol-
lowing Directives and Standards:
Directives:
– 2009/142/EC – GAD (valid until 20 April 2018)
– 2014/68/EU
Regulation:
– (EU) 2016/426 – GAR (valid from 21 April 2018)
The relevant product corresponds to the tested type
sample.
The production is subject to the surveillance proce-
dure pursuant to Directive 2009/142/EC AnnexII
paragraph 3 (valid until 20 April 2018) and to Regula-
tion (EU) 2016/426 Annex III paragraph 3 (valid from
21 April 2018).
Elster GmbH
Scan of the Declaration of conformity (D,GB)– see
www.docuthek.com
Filter pads
With 50µm separation rate
Designation Order No.
Spare parts set GFK 15/20,
10 filter pads and 10 O-rings 71935010
Spare parts set GFK 25/32,
10 filter pads and 10 O-rings 71937010
Spare parts set GFK 40/50,
5 filter pads and 5 O-rings 71939010
Spare parts set GFK 65,
1 filter pad and 1 O-ring 74923284
Spare parts set GFK 80,
1 filter pad and 1 O-ring 74923285
Spare parts set GFK 100,
1 filter pad and 1 O-ring 74923286
Filter pad GFK 125 35448581
O-ring 308x8 for GFK 125/150 03110013
Filter pad GFK 150 35448583
O-ring 308x8 for GFK 125/150 03110013
Filter pad GFK 200/250 35448584
O-ring 430x8 for GFK 200/250 03109164
▷
Filter pads with special separation rate of 10µm
for GFK15–100 on request.