Safety. Operating instructions Solenoid valve for gas VAS 6 9 Double solenoid valve VCS 6 9 DANGER. Contents WARNING CAUTION. Changes to edition 07.

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1 0 Elster GmbH Edition 0. Translation from the German 000 D F L I E DK S P GR TR CZ PL RUS H Operating instructions Solenoid valve for gas VAS Double solenoid valve VCS Cert. version 07.7 Contents Solenoid valve for gas VAS Double solenoid valve VCS... Contents... Safety.... Checking the usage... Installation... Wiring...4 Tightness test... Commissioning.... Setting the flow rate... Setting the start gas rate on VAS..L, VCS..L... Replacing the solenoid actuator, replacing the actuator cartridge... Replacing the damping unit... Replacing the circuit board.... Maintenance... Accessories...7 Pressure test points... 7 Pressure switch for gas DG..VC Cable gland with pressure equalization element. 7 Tightness control TC V... Measuring adapter.... Relief line adapter.... Bypass adapter... Replacing the adapter plate... Bypass/pilot gas valve...0 Adapter for length compensation... Technical data... Logistics... Certification... Contact...4 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 and standards in force. These instructions can also be found at Explanation of symbols,,,... = Action = Instruction Liability We will not be held liable for damage resulting from non-observance of the instructions and non-compliant use. Safety instructions Information that is relevant for safety is indicated in the instructions as follows: DAGER Indicates potentially fatal situations. WARIG Indicates possible danger to life and limb. CAUTIO 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 07.7 The following chapters have been changed: Cert. version Installation Wiring Accessories Certification -

2 Checking the usage Intended use Gas solenoid valves VAS for safeguarding gas or air on various appliances. Double solenoid valves VCS are combinations of two gas solenoid valves. This function is only guaranteed when used within the specified limits see page (Technical data). Any other use is considered as non-compliant. Type code Code Description VAS VCS Gas solenoid valve Double solenoid valve Sizes T T-product Inlet and outlet flange nominal size F A Flange to ISO 700 ASI flange 0 Inlet pressure max 00 mbar (7 psig) st valve: L quick opening, quick closing slow opening, quick closing L W Q K A S G nd valve: quick opening, quick closing slow opening, quick closing Mains voltage: 0 V AC, 0/0 Hz 0 V AC, 0/0 Hz 4 V DC 0 0 V AC, 0/0 Hz With visual position indicator and proof of closure switch and proof of closure switch for 4 V Viewing side (in flow direction): R from the right L from the left Electrical connection via cable gland B Basic E Prepared for adapter plates /P /M P M P M P M Accessories, right, inlet: screw plug pressure test point Accessories, right, interspace : screw plug pressure test point Accessories, right, interspace : screw plug pressure test point Accessories, right, outlet: screw plug pressure test point The same accessories can be selected for the left- or right-hand side Part designations VAS Solenoid actuator Flow body Connection box 4 Connection flange Proof of closure switch 4 VCS Mains voltage, electrical power consumption, ambient temperature, enclosure, inlet pressure and installation position: see type label. Osnabrück, Germany Vxx.XXXX -

3 Installation CAUTIO Please observe the following to ensure that the gas solenoid valve is not damaged during installation and operation: Important! The gas must be dry in all conditions and must not contain condensate. Sealing material and dirt, e.g. thread cuttings, must not be allowed to get into the valve housing. A filter must be installed upstream of every system. Do not store or install the unit in the open air. Dropping the device can cause permanent damage. In this event, replace the entire device and associated modules before use. Do not clamp the unit in a vice. Only secure the flange by holding the octagon with a suitable spanner. Risk of external leakage. Solenoid valves with overtravel switch and visual position indicator VAS/VCS..S or VAS/VCS..G: actuator cannot be rotated. Cleaning work on the solenoid actuator may not be performed using high pressure and/or chemical cleaning agents. This can cause moisture to get into the solenoid actuator and may lead to a dangerous failure. Install the unit in the pipe free of mechanical stress. Installation position: black solenoid actuator in the vertical upright position or tilted up to the horizontal, not upside down. In humid environments: black solenoid actuator in the vertical upright position only. Depending on the device type, the inlet pressure, the interspace pressure and the outlet pressure can be measured using pressure test points, see page 7 (Pressure ptest points). u p u Remove the adhesive label or screw cap from the inlet and outlet flange. ote direction of flow. Insert flat seal. The housing must not be in contact with masonry. Minimum clearance 0 mm (0.7"). Ensure that there is sufficient space for installation and adjustment. -

4 Wiring WARIG Attention! Please observe the following to ensure that no damage occurs: Electric shocks can be fatal! Before working on possible live components, ensure the unit is disconnected from the power supply. The solenoid actuator heats uuring operation. Surface temperature approx. C (approx. F). LV LV LV LV Plug 4 V DC: the valve does not open when the connections (+ and -) are reversed. When replacing VG..K by VAS..K/VCS..K, the plug must be rewired. LV (+) = black, LV (+) = brown, ( ) = blue 4 Use temperature-resistant cable (> 0 C). Disconnect the system from the electrical power supply. Shut off the gas supply. Wiring to E UL requirements for the AFTA market. To maintain the UL environmental rating Type, the enclosure openings shall be closed with fittings rated UL Type ; ; R; RX; S; SX; X; 4X; ; ; P; ; K or. Gas solenoid valves shall be protected by a branch circuit protective device not exceeding A. LV LV LV LV LV M0 cable gland 4 Socket = ( ), = LV (+), = LV (+) LV LV LV LV LV -4

5 LV COM Double solenoid valve: (+) if (-) a plug with socket is O fitted, only one proof of closure switch can C be connected. COM COM O C LV COM O C LV LV LV C Proof of closure switch VAS/VCS open: contacts and closed, VAS/VCS closed: contacts and closed. Indicator of proof of closure switch: red = VAS/VCS closed, white = VAS/VCS open. CAUTIO Please observe the following to ensure smooth operation: The proof of closure switch is not suitable for frequent cycling operation. Route valve and proof of closure switch cables separately through M0 cable glands or use two separate plugs. Otherwise, there is a risk of interference between valve voltage and proof of closure switch voltage. Valve: LV (+) = black, LV (+) = brown, ( ) = blue Proof of closure switch: = COM (black), = O (red), = C (brown or white) COM O C LV COM O COM O C When installing two plugs on a VAS with proof of closure switch: label the sockets and plugs to avoid confusion. Valve: = ( ), = LV (+) Proof of closure switch: = COM, = O, = C Finishing the wiring LV COM O C LV COM LV LV O O C COM C C COM O C LV COM O C LV LV LV LV COM O C COM O C LV COM O C LV LV LV -

6 Tightness test Close the gas solenoid valve. To be able to check the tightness, shut off the downstream pipeline close to the valve., max Open the solenoid valve. Setting the start gas rate on VAS..L, VCS..L The start gas rate can be set by turning the damping unit a maximum of turns. There must be a period of 0 seconds between switching the valve off and on again so that the damping is fully effective. Use a mm Allen key. Undo the screw at the V. Start mark by approx. mm, but do not unscrew completely. + V V max. x 0 + V 7 0 Replacing the solenoid actuator, replacing the actuator cartridge See operating instructions enclosed with spare part or see max Tightness OK: open the pipeline. Pipeline leaking: replace flat seal on flange. Then check for tightness once again. Unit leaking: remove the unit and return it to the manufacturer. Commissioning Setting the flow rate At the factory, the gas solenoid valve is adjusted for maximum flow rate Q. Allen key: mm. Q [%] max. min. 0 min. max. U Turns U min. max. VAS, VCS 0 VAS 7, VCS 7. VAS, VCS Screw the cap back on tight in order to prevent the actuator from being rotated. Replacing the damping unit See operating instructions enclosed with spare part or see Replacing the circuit board See operating instructions enclosed with spare part or see Maintenance CAUTIO In order to ensure smooth operation, check the tightness and function of the unit: Once per year, twice per year in the case of biogas; check for internal and external tightness, see page (Tightness test). Check electrical installations once a year in line with local regulations; pay particular attention to the PE wire, see page 4 (Wiring). If the flow rate has dropped, clean the strainer. Disconnect the system from the electrical power supply. Shut off the gas supply. 4 -

7 Pressure switch for gas DG..VC The pressure switch for gas monitors the inlet pressure, the outlet pressure and the interspace pressure. 7 7 We recommend replacing the flat seals. p p u u 0 Once the flat seals have been replaced, install the unit in the pipeline. Then check the unit for internal and external tightness, see page (Tightness test). Accessories Pressure test points Test points to check the inlet pressure p, pinterspace d pressure and outlet u pressure. Scope of p pdelivery z u p d x test points with x profiled sealing rings, Order o. 740 When retrofitting the pressure switch for gas, see enclosed operating instructions Pressure switches for gas DG..C, section entitled Mounting the DG..C.. on valvario gas solenoid valves. The switching point is adjustable via hand wheel. Adjusting range (adjusting tolerance = ± % of the scale value) Mean switching differential at min. and max. setting [mbar] ["WC] [mbar] ["WC] DG 7VC DG 40VC DG 0VC DG 00VC Deviation from the switching point during testing pursuant to E 4 Gas pressure switches: ± %. Cable gland with pressure equalization element To avoid the formation of condensation, the cable gland with pressure equalization element can be used instead of the standard M0 cable gland. The diaphragm in the gland is designed to ventilate the device, without allowing water to enter. x cable gland, Order o

8 Tightness control TC V Disconnect the system from the electrical power supply. Shut off the gas supply. The solenoid actuator cannot be rotated on solenoid valves with proof of closure switch VCx..S or VCx..G. Connect the TC to the inlet pressure connection and the interspace pressure connection of the inlet valve. Ensure that connections and on the TC and the gas solenoid valve are not reversed. TC and bypass/pilot gas valve cannot be fitted together on the same side of the double block valve. In the case of a VCx combination, it is recommended to always install the bypass/pilot gas valve on the rear of the second valve and the tightness control on the viewing side of the first valve, together with the connection box. The TC is secured using two captive combination Torx screws T0 (M4) inside the housing. Do not undo any other screws! Torx T0 Measuring adapter For the connection of the pressure switch DG..C, with a screw plug or pressure test point. Scope of delivery A p B D d A x seal p B x measuring plate d C 4 x set screws M D x screw plugs with sealing rings Order o. 740 for VAS/VCS, Order o. 740 for VAS..T/VCS..T. Relief line adapter For the connection of a relief line (½ PT, Rp ), with a screw plug or pressure test point. C 4 7 Scope of delivery A C max. 0 cm B D For more information on wiring, testing the tightness and commissioning, see enclosed Tightness control TC, TC, TC operating instructions. After completing the wiring, tightness test and commissioning for the TC, refit the housing cover on the TC. A x seal B x flange C 4 x set screws M D x screw plug with sealing ring Order o. 740 for Rp, VAS/VCS, Order o for ½ PT, VAS..T/ VCS..T. -

9 Disconnect the system from the electrical power supply. Shut off the gas supply. 4 Replacing the adapter plate Disconnect the system from the electrical power supply. Shut off the gas supply. We also recommend replacing the seal when replacing the adapter plate. 4 7 Shut off the downstream gas pipeline close to the valve <, x max Tightness OK: open the pipeline. Connection leaking: check seal. Bypass adapter For the connection of the bypass/pilot gas valve VAS. Attached the required accessories, e.g. gas pressure switch or pressure test points, as described. 0 If a bypass/pilot 7 gas valve is to be installed, please continue reading as of point in the following section entitled Bypass/pilot gas valve. To, be able x to max check the tightness, shut off the downstream pipeline as close as possible to the main valve. 0, x max Scope of delivery Tightness OK: open the pipeline. Connection leaking: check seals. A C B A x seal B x bypass plate C 4 x set screws M Order o

10 Bypass/pilot gas valve Scope of delivery A B C Pilot gas valve Pilot gas valve: at the outlet, shut off the downstream x max pipeline close to the pilot gas valve., VCS: open the first VCS valve. D, x max A x bypass or pilot gas valve VAS B x flange O-rings C 4 x connecting screws D x bypass adapter, x seal, 4 x connecting screws Bypass valve VAS : E x adapter flanges Pilot gas valve VAS 4: E x adapter flange, x adapter flange with threaded hole Disconnect the system from the electrical power supply. Shut off the gas supply. 4 E 4 7 0, x max Open the pilot gas valve. 0 Checking the bypass/pilot gas valve for tightness at the inlet and outlet 4 To be able to check the tightness, shut off the downstream pipeline as close as possible to the main valve. The, bypass/pilot x max gas valve must be closed. Bypass valve 7 0 Bypassventil öffnen. Tightness OK: open the pipeline. Connection leaking: check the sealing rings. Unit leaking: remove the valve and return it to the manufacturer., x max 7, x max 0 Open the bypass valve. 0 0,, x p x max u max 7-0

11 Adapter for length compensation For length compensation when replacing VG with VAS. Scope of delivery B VAS, VCS A x adapter for length compensation B 4 x threaded bolts C x nuts D x washers E x serrated lock washers Order o. 747 A VAS 7 to, VCS 7 to A x adapter for length compensation B x threaded bolts C x nuts D 4 x washers E x serrated lock washers VAS, Order o. 747, VAS 7, Order o. 747, VAS, Order o. 747, VAS, Order o To ensure safe grounding, fit both serrated lock washers to the same threaded bolt under the nuts. The lacquer coat on the flange connections will thus be broken open. Insert a sealing washer at both the inlet and outlet of the adapter for length compensation. C D E Technical data Gas types: natural gas, LPG (gaseous), biogas (max. 0. %-by-vol. H S) or clean air; other types of gas on request. The gas must be clean and dry in all temperature conditions and must not contain condensate. Max. inlet pressure : max. 00 mbar (7. psig). CE and FM approved and UL listed, max. inlet pressure : 00 mbar (7 psig). FM approved, non operational pressure: 700 mbar (0 psig). ASI/CSA approved: 0 mbar ( psig). The flow adjustment facility limits the maximum flow rate: 0 to 00%. VAS..L, VCS..L: start gas rate adjustment: 0 to 70%. Opening times: VAS.., VCS.. quick opening: s, VAS..L, VCS..L slow opening: up to 0 s. Closing time: quick closing: < s. Medium and ambient temperatures: -0 to +0 C (-4 to +40 F). o condensation permitted. Long-term use in the upper ambient temperature range accelerates the ageing of the elastomer materials and reduces the service life (please contact manufacturer). Storage temperature: -0 to +40 C (-4 to +04 F). Enclosure: IP. Valve housing: aluminium, valve seal: BR. ISO flange pursuant to ISO 700, P, ASI flange pursuant to ASI 0. Class A, Group safety valve pursuant to E and E, Factory Mutual (FM) Research Class: 7400 and 74, ASI Z. and CSA.. VAS /VCS Mains voltage: 0 V AC, +0/-%, 0/0 Hz, 0 V AC, +0/-%, 0/0 Hz, 4 V DC, ± 0%. Switching frequency: VAS, VCS : max. 0 x per minute. VAS..L: there must be a period of 0 seconds between switching off and on again so that the damping is fully effective. -

12 VAS /VCS Mains voltage: 0 V AC, +0/-%, 0/0 Hz, 0 V AC, +0/-%, 0/0 Hz. Switching frequency: max. x per minute. Max. temperature of solenoid coil: +0 C (+ F) above ambient temperature. Current consumption at 0 C ( F): pick-up current:. A, holding current: 0. A. VAS /VCS Duty cycle: 00%. Power factor of the solenoid coil: cos φ = 0.. Power consumption: Type Voltage Power 4 V DC 70 W VAS 0 V AC W 0 V AC W 4 V DC 7 W VAS 7 0 V AC 0 W 0 V AC W 4 V DC W VAS 0 V AC 7 W 0 V AC W 4 V DC VAS 0 V AC 00 (*) W 0 V AC 00 (*) W 4 V DC 40 W VCS 0 V AC W 0 V AC W 4 V DC 0 W VCS 7 0 V AC 0 W 0 V AC W 4 V DC W VCS 0 V AC 4 W 0 V AC W 4 V DC VCS 0 V AC 400 (0*) W 0 V AC 400 (0*) W * after opening Cable gland: M0 x.. Electrical connection: electrical cable with max.. mm (AWG ) or plug with socket to E Contact rating of proof of closure switch: Type Voltage Min. current (resistive load) Max. current (resistive load) VAS..S, 0 V AC, VCS..S 0/0 Hz 00 ma A VAS..G, 0 V DC VCS..G ma 0. A Switching frequency of proof of closure switch: max. x per minute. Switching Switching cycles* current [A] cos φ = cos φ = ,000 00, ,000 0,000 00,000 00,000 00,000 * Limited to max. 00,000 cycles for heating systems. - Air flow rate Q Air flow rate Q for a pressure loss of p = mbar (0.4 "WC) p mbar (0,4 "WC) x VAS Type Air flow rate Q [m /h] Q [SCFH] VAS 0 VAS 7 4 VAS VAS 70 VCS VCS VCS VCS Flow rate Q of the bypass/pilot gas valve The adjusting range for the bypass valve, and pilot gas valve, VAS was determined using the values measured for open flow adjustment (Q max. ) and fully reduced flow adjustment (Q min. ). p [inch WC] p [mbar] , 0, 0,4 0, 0, 0, Adjusting range = natural gas (ρ = 0.0 kg/m ) = propane (ρ =.0 kg/m ) = air (ρ =. kg/m ) Q [m /h (n)] Q [SCFH (n)]

13 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 E, E for VAS/VCS: Type VAS/VCS to VAS/VCS 70 VAS/VCS 00 to VAS/VCS Designed lifetime Switching Time [years] cycles 00, ,000 0 You can find further explanations in the applicable rules and regulations and on the afecor website ( This procedure applies to heating systems. For thermoprocessing equipment, observe local regulations. Logistics Transport Protect the unit from external forces (blows, shocks, vibration). On receipt of the product, check that the delivery is complete, see page (Part designations). Report any transport damage immediately. Storage Store the product in a dry and clean place. Storage temperature: see page (Technical data). Storage time: months in the original packaging 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 accordance 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 products VAS/VCS with product ID o. CE-00BR0 comply with the requirements of the listed Directives and Standards. Directives: 04//EU LVD 04/0/EU EMC Regulation: (EU) 0/4 GAR Standards: E:0+AC:0 E :0+A:0 The relevant product corresponds to the tested type sample. The production is subject to the surveillance procedure pursuant to Regulation (EU) 0/4 Annex III paragraph. Elster GmbH Scan of the Declaration of conformity (D, ) see SIL, PL The solenoid valves VAS are suitable for singlechannel systems (HFT = 0) up to SIL /PL d, and up to SIL /PL e when two redundant solenoid valves are installed in a double-channel architecture (HFT = ), provided that the complete system complies with the requirements of IEC 0/ISO 4. The safety function value which is actually achieved is derived by taking all components into account (sensor logic actuator). For this, the demand rate and structural measures to avoid/detect nonconformity are to be observed (e.g. redundancy, diversity, monitoring). Characteristic values for SIL/PL: HFT = 0 ( device), HFT = ( devices), SFF > 0, DC = 0, type A/category B,,,, 4, high demand mode, CCF >, β =. PFH D = λ D = = 0. x n MTTFd B op 0d VAS, VCS B0d value Sizes,700,000 -

14 FM approved Factory Mutual (FM) Research Class: 7400 and 74 Safety shut-off valves. Designed for applications pursuant to FPA and FPA. ASI/CSA approved Canadian Standards Association ASI Z. and CSA. VAS : UL listed Underwriters Laboratories UL 4 Electrically operated valves. AGA approved AGA Australian Gas Association Eurasian Customs Union The product VAS, VCS meets the technical specifications of the Eurasian Customs Union. Directive on the restriction of the use of hazardous substances (RoHS) in China Scan of the Disclosure Table China RoHS see certificates at Contact If you have any technical questions, please contact your local branch office/agent. The addresses are Elster GmbH available on the Internet or from Elster GmbH. Strotheweg, D-404 Lotte (Büren) Tel We reserve the right to make technical modifications Fax in the interests of progress. hts.lotte@honeywell.com, -4