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Summary of Contents for Elektrogas VMR Series
- Page 1 VMR-OTN Safety solenoid valves for gas Fast opening and fast closing type DN8 … DN150 elektrogas.com EE161 -0108...
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Page 2: Table Of Contents
ELEKTROGAS – TECHNICAL MANUAL VMR-OTN Safety solenoid valves for gas Fast opening and fast closing type Contents Description ………………………………………….. 2 Features …………………………………………….. 2 Functioning and application ………………………. Accessories and optionals ………………………… 4 Technical specifications …………………………… 4 Gas flow chart (pressure drop) …………………… 6 Ordering information ………………………………. -
Page 3: Functioning And Application
ELEKTROGAS – TECHNICAL MANUAL Functioning and application The VMR type valve is a safety shutting device using auxiliary power supply. When it is de-energized, the spring pushes on the seal disc, keeping the gas passage closed. Now, the inlet chamber is under the gas line pressure, and it forces on the disc too, improving the seal. -
Page 4: Accessories And Optionals
ELEKTROGAS – TECHNICAL MANUAL Accessories and optionals A fine mesh filter is provided, to prevent dirty contamination of the seal seat. However, an external strainer must be installed upstream of the valve. Brass models are available without internal filter only. - Page 5 ELEKTROGAS – TECHNICAL MANUAL Fig.3 Tab. 2 Material and Power Flow factor Overall dimensions Weight connections consumption @230VAC [m³/h] [mm] [Kg] CuZn AlSi Rp 1/4 0,55 66,5 0,27 Rp 3/8 Rp 1/2 Rp 3/8 20/25 ( Rp 1/2 20/25 (...
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Page 6: Gas Flow Chart (Pressure Drop)
ELEKTROGAS – TECHNICAL MANUAL Gas flow chart (Pressure drop) dP [mmH O] 5000 3000 4000 5000 5000 4000 3000 2000 4000 3000 2000 3000 2000 1000 2000 1000 1000 1000 DN 150 DN 125 DN 100 DN 80 DN 65 Rp 2 Rp 1½... - Page 7 ELEKTROGAS – TECHNICAL MANUAL When the flow read on the diagram is referred to operating pressure instead of standard conditions, the pressure drop ∆p read on the diagram must be multiplied for the factor: (1+ relative pressure in bar) Example: In the 2”...
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Page 8: Ordering Information
ELEKTROGAS – TECHNICAL MANUAL Ordering information Tab.4 Material and Connections 230V 110V CuZn AlSi 200 mbar 360 mbar 200 mbar 360 mbar 200 mbar 200 mbar Rp 1/4 VMR01OTN VMR01OTN.B VMR01OTN.C VMR01OTN.D Rp 3/8 VMR02OTN VMR02OTN.B VMR02OTN.C VMR02OTN.D Rp 1/2 VMR12OTN VMR12OTN.B... -
Page 9: Standards And Approvals
ELEKTROGAS – TECHNICAL MANUAL Standards and approvals The valve design meets current European approval requirements regarding safety shut-off functions on gaseous fuels. These products conform with the Gas Appliances Directive (90/396/EEC) and the certification has been issued by the notified body: GASTEC CERTIFICATION B.V. -
Page 10: Installation, Adjustment And Servicing
ELEKTROGAS – TECHNICAL MANUAL Installation, adjustment and servicing To assure a proper and safe operation, as well as a long life of the valve, the installation procedure and a periodical servicing are very important topics and the following instructions should be always fulfilled. - Page 11 ELEKTROGAS – TECHNICAL MANUAL ELECTRICAL CONNECTION (IEC 730-1) Valve is provided with terminal box or standard plug (see tab. 4) for the electrical connections. To connect the valve do the following: Terminal box version: - Using a screwdriver remove the box cover.
- Page 12 ELEKTROGAS – TECHNICAL MANUAL FLOW RATE ADJUSTMENT (Vmax) Flow rate may be adjusted from 0 cubic meters/h to the maximum (excepting 4", 5", 6" and brass models). To perform regulation do the following: 1. Remove coil fastener cap. 2. Using a 4 mm Allen wrench, remove the locking dowel.
- Page 13 ELEKTROGAS – TECHNICAL MANUAL EXTERNAL INSPECTION Turn off all power before servicing any part of the system. Check the conditions of the plug/box gasket. If gasket is deteriorated, replace it with a new one. Check the electrical connections are clean, dry and correctly tightened.
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