Safety. Operating instructions Filter module VMF Measuring orifice VMO Fine-adjusting valve VMV DANGER. Contents WARNING CAUTION

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1 Edition. D F NL I E DK S N P GR TR CZ PL RUS H Operating instructions Filter module VMF Measuring orifice VMO Fine-adjusting valve Translation from the German Elster GmbH Contents Filter module VMF Measuring orifice VMO Fine-adjusting valve Checking the usage Intended use Type code Part designations Installation VMF with pressure switch Tightness test Commissioning VMO Maintenance Accessories Orifice plate Seal set VA Technical data Service life 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 operator. This unit must be installed and commissioned in accordance with the regulations in force. These instructions can also be found at Explanation of symbols,,,... = Action = Instruction Liability We will not be held liable for damages resulting from non-observance of the instructions and noncompliant 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. Transport On receipt of the product, check that the delivery is complete (see Part designations). Report any transport damage immediately. Storage Store the product in a dry place. Ambient temperature: see Technical data. -

2 Checking the usage Intended use valvario filter module VMF, measuring orifice VMO and fine-adjusting valve for installation in gas control and safety systems in the fields of industrial and commercial gas heat generation. VMF: with replaceable filter pad insert to protect against soiling of downstream appliances. VMO: with replaceable orifice insert. For use as a restricting or measuring orifice. : fine-adjusting valve for presetting the gas or air flow rate to gas burners or gas appliances. This function is only guaranteed when used within the specified fields of application, see also Technical data. Any other use is considered as non-compliant. Type code Code Description VMF valvario filter module VMO valvario measuring orifice valvario fine-adjusting valve Size Without inlet and outlet flange 0 Nominal inlet diameter [DN] /0 / Nominal outlet diameter [DN] R N F Rp internal thread NPT internal thread Flange to ISO p e max. 00 mbar M P xx With test points With screw plugs With pressure switch: DG 7/VC DG 0/VC DG 0/VC DG 00/VC Orifice diameter Part designations VMF,, VMO 9 VMF.. 7 Housing Type label Base plate O-ring Double block seal Connection parts ( ) 7 Pressure test point Sealing plug 9 Pressure switch DG..VC Inlet pressure p e and ambient temperature: see type label. Osnabrück, Germany VM CE-00BO Installation Installation position: install the VMF with the base plate pointing downwards or sideways, otherwise dirt can collect in the housing when replacing the filter pad. The can be installed as required; when fitting to pressure regulator VAD, VAG or VAV, the base plate must be facing the same direction as the regulator body. VMO can be installed as required. Installation position when using valvario controls: VMF is fitted upstream of the control, is fitted downstream of the control. When used as a restricting orifice, the VMO is fitted downstream of the control. VMF, VMO -

3 Installation position with inlet and outlet flanges: VMF, and VMO may be inserted at any position in the pipework. When used as a measuring orifice, the length of the inlet and outlet section of the VMO must be DN. VMF, VMO If the fine-adjusting valve is fitted downstream of a pressure regulator VAD, VAG or VAV, a differential pressure orifice with rubber seals G must be inserted at the outlet of the pressure regulator. G DN DN The housing must not touch any surrounding walls. Minimum clearance 0 mm. Sealing material and thread cuttings must not be allowed to get into the housing. A filter must be installed upstream of every system. Ensure that there is sufficient space for installation and adjustment. Do not store or install the unit in the open air. VMF with pressure switch Wiring the pressure switch DG..VC 7 CAUTION Please observe the following to ensure that the VMF, VMO or is not damaged during operation: Only secure the appliance by holding the octagon on the flange with a suitable spanner risk of external leakage. 9 0 L COM NO NC WARNING If VMF, VMO or has been delivered with two flanges and is subsequently attached to a valvario control, use the double block seal instead of the O-ring. The double block seal must be ordered separately, see [Seal set VA p. 7]. Pode ser girado em passos de 90. O anel O ring deve estar montado. -

4 Setting the pressure switch DG..VC Deviation from the switching point during testing pursuant to EN Gas pressure switches: ± %. 7 Adjusting range Mean switching (adjusting tolerance = ± % of differential at min. and max. setting the scale value) DG 7VC 7 mbar mbar DG 0VC 0 mbar mbar DG 0VC 0 0 mbar mbar DG 00VC mbar mbar 7 Unit leaking: dismantle the VMF, VMO or and return it to the manufacturer. Commissioning Setting the flow rate At the factory, the fine-adjusting valve is adjusted for maximum flow rate (00%).. V [%] 00 0 Closed CAUTION Open Do not overturn the adjusting screw, as the fineadjusting valve then can no longer be adjusted. Tightness test To be able to check the tightness, shut off the downstream pipeline as close as possible to the VMF, or VMO., p e max. N, mm Check the for leaks see [Tightness test p. ]. VMO Replacing the orifice plate Orifice plates and flow rate diagrams see [Orifice plate p. ] Shut off the gas supply. N, p e max. 7, mm N, p e max Tightness OK: open the pipeline. Pipeline leaking: check O-rings. When installing on a valvario valve or pressure regulator, check the O-ring and double block seal. 0 -

5 0 Check the VMO for tightness see [Tightness test p. ]. Accessories Orifice plate Orifice insert for installing in the plate bracket of measuring orifice VMO. The hole diameter is engraved on the orifice insert. Supply including the new seal for the base plate. Maintenance CAUTION In order to ensure smooth operation: check the VM for tightness annually, or every six months if operated with biologically produced methane. VMF Replacing the filter pad If the flow rate is correct, check for tightness see [Tightness test p. ]. If the flow rate has dropped, replace the filter pad. Disconnect the system from the electrical power supply. Shut off the gas supply., mm Orifice Hole diameter [mm] Order No. VMO D /B 79 VMO D /B 79 VMO D /B 79 VMO D /B 79 VMO D0 /B VMO D /B 79 VMO D /B 799 VMO D /B 79 VMO D /B 79 VMO D0 /B 0 79 VMO Dx /B* xx* 79 VMO D /B 79 VMO D0 /B 0 79 VMO D /B 79 VMO D /B 797 VMO D /B 79 VMO D /B 799 VMO D /B 79 VMO Dx /B xx* 79 * Hole diameter on request. Flow rate diagrams for orifice plates with a hole diameter of to mm for operation with natural gas. Pressure loss is measured at the VMO pressure taps: VMO mm mm mm Check the VMF for tightness see [Tightness test p. ]. 0, 0, 0, 0, 0, 0 V' [m /h (n)] -

6 VMO VMO mm mm mm 0 mm 0 mm mm mm mm 0, 0, 0, 0, 0, 0 V' [m /h (n)] V' [m /h (n)] VMO VMO mm mm 0 mm mm 0 mm mm mm V' [m /h (n)] V' [m /h (n)] VMO mm mm mm mm mm 0 mm V' [m /h (n)] -

7 Seal set VA When retrofitting accessories or a second valvario control, we recommend replacing the seals. Size : Seal set VA, Order No. 799, Size : Seal set VA, Order No Scope of delivery: A x double block seal, B x O-rings (flange), C x O-rings (pressure switch), D x sealing rings (test nipple/test point). B Technical data Gas types: natural gas, LPG (gaseous), biologically produced methane (max. 0. %-by-vol. H S) or air; other gases on request. The gas must be dry in all conditions and must not contain condensate. Max. inlet pressure p e : max. 00 mbar (7. psig). Ambient temperature: -0 to +0 C, no condensation permitted. Storage temperature: 0 to +0 C. Housing: aluminium. Connection flanges with internal thread: Rp to ISO 7-, NPT to ANSI/ASME. Air flow rate V' for pressure loss p: p = mbar V' min. [m /h] V' max. [m /h] , , 0, A D B C D p = 0 mbar V' min. [m /h] V' max. [m /h] , , 0, VMF Air flow rate V' for pressure loss p: Air flow rate V' [m /h] for p = mbar. p = 0 mbar VMF 0.9. VMF 7.0. VMF 0.0. VMF VMF. 7. VMF VMF 0..0 VMF 0. 0 DG..VC Diaphragm pressure switch, silicone-free. Diaphragm: NBR. Housing: glass fibre reinforced PBT plastic with low gas release. Lower housing section: AlSi. Max. test pressure: bar (9 psig), < min. Switching capacity: DG..VC, 0 V AC: I = 0.0 A at cos ϕ =, I = 0.0 A at cos ϕ = 0.. DG..VC..G, 0 V AC: I = 0.0 A at cos ϕ =, I = 0.0 A at cos ϕ = 0.. DG..C..G, V DC: I = 0.0 A. DG..VCT, 0 0 V AC: I = A at cos ϕ =, I = 0. A at cos ϕ = 0.. DG..VCT..G, < 0 V AC: I = 0. A at cos ϕ =, I = 0.0 A at cos ϕ = 0.. If the DG..VC..G (DG..VCT..G) has switched a voltage > V (> 0 V) and a current > 0. A once, the gold plating on the contacts will have been burnt through. It can then only be operated at this power rating or higher power rating. Enclosure: IP pursuant to IEC 9 with standard socket pursuant to DIN 0 and ISO 00, IP 00 with AMP plug. Safety class:. -7

8 Service life The Pressure Equipment Directive (PED) and the Energy Performance of Buildings Directive (EPBD) demand regular checks on and maintenance of heating systems, in order to ensure a high level of use in the long term, a clean method of operation and safe function. The service life on which the construction is based, hereinafter referred to simply as the service life, is compiled from the relevant standards. You can find further explanations in the applicable rules and regulations and on the afecor website ( This information on service life is based on using the product in accordance with these operating instructions. The product must be serviced at regular intervals. Once the specified service life has been reached, the safety-related functions must be checked in accordance with the section entitled Maintenance. If the product passes the aforementioned function tests, you can continue to use it until the next scheduled maintenance operation. At this point, these tests must be repeated. If the product fails one of the aforementioned tests, it must be replaced immediately. This procedure applies to heating systems. For thermoprocessing equipment, observe national regulations. Service life (based on date of manufacture) in accordance with EN, EN for VM: Service life Type [years] VM to VM Long-term use in the upper ambient temperature range accelerates the ageing of the elastomer materials and reduces the service life (please contact manufacturer). 0 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 Postfach 09, D-90 Osnabrück Strotheweg, D-90 Lotte (Büren) T +9-0 F info@kromschroeder.com,