Elster Kromschroder VMF 115, Kromschroder VMF 110, Kromschroder VMF 225, Kromschroder VMF 120, Kromschroder VMF 125 Technical Information
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Filter module VMF
Technical Information · GB
3.1.0.20 Edition 02.11
• Safe gas cleaning using filter pad and strainer
• Easy installation into a system in conjunction with valVario valves and
regulators
• Installation in any position, even with optional pressure switch
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Contents
Filter module VMF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Examples of application. . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1.1 valVario double block valve with pressure regulator VCD
and VMF fitted to a forced draught burner . . . . . . . . . . . . . . . . . 4
1.1.2 valVario double block valve with variable air/gas ratio
control VCV and VMF fitted to a forced draught burner . . . . . . . 4
1.1.3 Industrial burner with staged control. . . . . . . . . . . . . . . . . . 4
1.1.4 Industrial burner with continuous control . . . . . . . . . . . . . . .5
2 Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Flow rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1 Calculating the nominal size . . . . . . . . . . . . . . . . . . . . . 7
4 Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.1 Type code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5 Project planning information . . . . . . . . . . . . . . . . . . . . . . 9
5.1 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.1 Seal set VA 1 – 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.2 Filter pad set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
7 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
7.1 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7.1.1 VMF..R. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7.1.2 VMF..N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
7.1.3 VMF 240F . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
8 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2
VMF · Edition 02.11
t
= To be continued
Application
1 Application
VMF2..1-4 VMF2..R..M
The filter module VMF is designed for cleaning the gas and air
flow to gas burners or gas appliances. It is suitable for use in
gas control and safety systems in all sectors of the iron, steel,
glass and ceramics industries, and also in all areas of private
and commercial heat generation.
It can easily be adapted to different pipes thanks to various
flange shapes for the individual valVario valve sizes. Its modular design allows assembly with valVario valves or regulators
making it possible to construct space-saving gas systems.
3
Forced draught gas burner with valVario controls
VMF · Edition 02.11
Roller hearth furnace
Application
4
1.1 Examples of application
1.1.1
valVario double block valve with pressure regulator VCD
and VMF fitted to a forced draught burner
VCD
VMF
This type of control is used on one-stage forced draught burn-
ers or in one-stage boilers, it is also suitable for use with a
mechanical or electronic air/gas ratio control system.
1.1.2 valVario double block valve with variable air/gas ratio
control VCV and VMF fitted to a forced draught burner
VCV
VMF
p
F
1.1.3 Industrial burner with staged control
VAG
VMV
EKO
BIC
EKO
LEH
AKT
VMF
VAS
+VBY
IC 40 + BVA
M
The high output impulse at the burner generated by this type
of control produces a uniform temperature distribution and
good circulation of the furnace or kiln atmosphere, e.g. in heat
treatment furnaces in the iron and non-ferrous metal industries
or kilns for heavy clay and fine ceramics. The required lambda
value can be set using the fine-adjusting valve VMV and the
air adjusting cock LEH. Using the filter module VMF, the gas
flow upstream of the gas valve VAS is cleaned.
p
L
With this type of continuous control, the mixture setting is
maintained over a wide control range while at the same time
preventing air deficiency.
VMF · Edition 02.11
Application > Examples of application
1.1.4 Industrial burner with continuous control
5
Three-
point
step
VMF
IC 20 + BVA
VAS
M
VAG
VMV
BVA
EKO
ZIO, BIO, BIOA
EKO
LEH
Using the filter module VMF, the gas flow upstream of the
gas valve VAS and the air/gas ratio control VAG is cleaned.
The gas/air mixture is set using the fine-adjusting valve VMV.
A constant mixture setting is maintained over a wide control
range while at the same time preventing air deficiency. This
type of control is used on boilers with multi-stage or infinitely
adjustable forced draught burners.
VMF · Edition 02.11
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