CE2N4721en 2018-04-17 Building Technologies s 4 721 ACVATIX™ Modulating refrigerant valves with magnetic actuator‚ PS43 M3FB..LX.. Soldered connection‚ hermetically sealed ∑ Modulating control valve for hot-gas applications for capacity control of refrigeration units and heat recovery systems ∑ For organic safety refrigerants ∑ AC 24 V operating voltage or power signal DC 0…20 V Phs (phase cut) ∑ Selectable electrical interface ZM.. with DC 0…10 V, DC 4…20 mA or DC 0…20 V Phs positioning signal ∑ High resolution and control accuracy ∑ Short positioning time (< 1 s) ∑ Port AB‡ A closed when de-energized ∑ Robust and maintenance-free ∑ DN 15…32, k vs values 0.6…12 m 3 /h Use The M3FB..LX.. 3-port and 2-port valves with magnetic actuators are used for modulating capacity control of refrigeration units and for heat recovery systems. They may be used as hot gas diverting or 2-port valves. Suitable for organic safety refrigerants such as R22, R134a, R404A, R407C, R507, etc.2 / 10 SiemensModulating refrigerant valves with magnetic actuator‚ PS43CE2N4721en Building Technologies2018-04-17 Type summary Type referenceDNk vs ǻp max S NA P med AB Æ AAB Æ A [m 3 /h][MPa][bar][VA][W] M3FB15LX06/A 150.62.222266 M3FB15LX15/A151.52.222266 M3FB15LX/A153.02.222266 M3FB20LX/A205.01.818266 M3FB25LX/A 258.01.2124010 M3FB32LX 3212.00.884010 D p max = Maximum permissible differential pressure across the valve’s control path AB Æ A valid for the entire actuating range S NA = Rated apparent power for transformer selection P med = Typical power consumption k vs = Nominal flow rate of cold water through the fully opened valve (H 100 ) by a differential pressure of 100 kPa (1 bar), to VDI 2173 Type reference Operating voltagePositioning signal Working rangeData sheet ZM101/AAC 24 VDC 0…10 VDC 4…8 V N4591 ZM121/A AC 24 VDC 4…20 mADC 8…16 mA ZM111 -DC 0…20 V Phs DC 10…15 V Phs For ZM101/A and ZM121/A the DC 0…20 V Phs positioning signal without operating voltage is also possible. Valve body and magnetic actuator form one integral unit and cannot be separated. When placing an order, please specify the quantity, product description and type code. Type referenceStock numberDescriptionQuantity M3FB20LX/AM3FB20LX/AModulating refrigerant valve with magnetic actuator2 ZM101/AZM101/ATerminal housing2 Valves and terminal housings are packed separately. Overview table, see page 10. Technical design The armature or magnetic core is designed as a floating component within the pressure system, so that no external shaft gland is required. The leakage losses common with moving parts are thus avoided. The valve cross-section allows for easy flow whether the valve is fully or only partially opened. This reduces pressure losses and ensures quiet operation. The control signal is converted in the ZM../A terminal housing into a phase cut signal, which generates a magnetic field in the coil. This causes the only moving part, the armature, to change its position in accordance with the interacting forces (magnetic field, counter-spring, hydraulics). The armature responds rapidly to any change in signal, transferring the corresponding movement directly to the control disc, enabling fast changes in load to be corrected quickly and accurately. The force of the counter-spring closes the valve automatically (control path ports AB ‡ A) if the power is switched off or fails. Accessories: ZM.. terminal housing Ordering Example: Delivery Rev. no.3 / 10 SiemensModulating refrigerant valves with magnetic actuator‚ PS43CE2N4721en Building Technologies2018-04-17 Sizing Correct valve sizing (to ensure a sufficiently large pressure drop D p v 100 across the fully open valve) is the key to the correct operation of a refrigeration unit. All the components must be coordinated, and this can be ensured only by the refrigeration specialist. The application examples on pages5 and6 show the recommended pressure drop in each case. Nominal capacity in kW at evaporation temperature t 0 = 5 °C Refrigerant R407C (R22)R134a (R12)R404A / R507 ǻp v100 Valve typeCondensation temperature t c [°C] 504030504030504030 0.5 barM3FB15LX06/A4.54.03.63.83.32.93.73.32.9 M3FB15LX15/A11108.99.58.37.29.28.17.2 M3FB15LX/A222018191714181614 M3FB20LX/A373330322824312724 M3FB25LX/A595348514438494338 M3FB32LX898072766757746558 1 bar M3FB15LX06/A 6.25.64.95.34.63.95.14.54.0 M3FB15LX15/A161412131110131110 M3FB15LX/A312825262320262320 M3FB20LX/A524641443833433833 M3FB25LX/A837466706152696153 M3FB32LX1251119910692781039180 4 barM3FB15LX06/A11.49.98.49.27.55.89.68.37.0 M3FB15LX15/A282521231915242118 M3FB15LX/A575042463829484135 M3FB20LX/A958370766348806958 6 barM3FB15LX06/A13118.9107.65.8119.47.7 M3FB15LX15/A332822251915282319 M3FB15LX/A655545503829554739 M3FB20LX/A1089274836348927864 8 barM3FB15LX06/A14118.99.87.6129.97.7 M3FB15LX15/A3528222419302519 M3FB15LX/A6956454938604939 M3FB20LX/A115947481631008264 D p V100 = Differential pressure across the fully opened valve (control path AB Æ A) at a volumetric flow V 100 Refrigeration capacity Q 0 Selection table for approximate valve size4 / 10 SiemensModulating refrigerant valves with magnetic actuator‚ PS43CE2N4721en Building Technologies2018-04-17 The example refers to 3-port hot-gas bypass control application. 4 7 2 1 D 0 1 +10 +5 0 -5 -10 -15 -20 -25 -30 -35 -40 +10 +5 0 -5 -10 -15 -20 -25 -30 -35 -40 +10 +5 0 -5 -10 -15 -20 -25 -30 -35 -40 t 0 [ ° C ] +5°C Q 0 [ k W ] m [ k g / h ] 100 200 300 400 600 1000 2000 4000 6000 10000 20000 40000 5 6 8 10 15 20 30 40 50 60 80 100 150 200 300 400 500 600 800 1000 R134a (R12) R407C (R22) R404A R507 (R502) t 0 [ ° C ] t 0 [ ° C ] . . D p V 1 0 0 [ b a r ] t f l[ ° C ] + 2 5 + 3 0 + 3 5 + 4 0 + 4 5 + 5 0 + 5 5 + 6 0 + 6 5 + 4 0 + 4 5 + 5 0 + 5 5 + 6 0 + 6 5 M 3 F B 1 5 L X 1 5 / A t f l[ ° C ] + 2 5 + 4 5 + 5 0 + 5 5 + 6 0 + 6 5 + 4 0 + 3 5 + 3 0 k v s 1 , 5 M 3 F B 1 5 L X 0 6 / A k v s 0 , 6 M 3 F B 1 5 L X / A k v s 3 M 3 F B 2 0 L X / A k v s 5 M 3 F B 2 5 L X / A k v s 8 M 3 F B 3 2 L X k v s 1 2 + 65 +5 5 +4 5 + 35 +25 + 6 5 + 6 0 + 5 5+ 5 0 + 4 5 + 4 0+ 3 5 + 3 0 + 2 5 1 0 7 . 0 5 . 0 4 . 0 3 . 0 2 . 0 1 . 5 1 . 0 0 . 7 0 . 5 0 . 4 0 . 3 0 . 2 0 . 1 5 t C [ ° C ] D p V 1 0 0 [ b a r ] +6 5 + 55 +45 + 35 +2 5 + 6 5 + 6 0 + 5 5 + 5 0 + 4 5 + 4 0 + 3 5+ 3 0 + 2 5 t C [ ° C ] D p V 1 0 0 [ b a r ] + 65 + 55 +4 5 + 35 + 25 + 6 5 + 6 0 + 5 5 + 5 0 + 4 5 + 4 0+ 3 5+ 3 0+ 2 5 t C [ ° C ] 1 0 7 . 0 5 . 0 4 . 0 3 . 0 2 . 0 1 . 5 1 . 0 0 . 7 0 . 5 0 . 4 0 . 3 0 . 2 0 . 1 5 1 5 1 0 7 . 0 5 . 0 4 . 0 3 . 0 2 . 0 1 . 5 1 . 0 0 . 7 0 . 5 0 . 4 0 . 3 0 . 2 0 . 1 5 1 5 t f l[ ° C ] + 2 5 + 3 0 + 3 5 D p V k v s 2 0 ( M 3 F K 4 0 L X ) k v s 3 0 ( M 3 F K 5 0 L X ) 24 t 0 = Evaporation temperature [°C] t c = Condensation temperature [°C] t fl = t c – degree of subcooling [°C] Q 0 = Refrigeration capacity [kW] m= Mass flow of refrigerant [kg/h] D p v100 = Admissible differential pressure [bar], installation-specific k vs = Nominal flow rate [m 3 /h] of cold water through the fully opened valve (H 100 ) by a differential pressure of 100 kPa (1 bar) Selection chart5 / 10 SiemensModulating refrigerant valves with magnetic actuator‚ PS43CE2N4721en Building Technologies2018-04-17 Application examples The diagrams shown here are principles only, without installation-specific details. For accurate control of evaporators from 0…100 % refrigeration capacity. ∑ Suitable for test rooms, laboratory systems, small chilled water units and DX evaporators with a refrigeration capacity of up to approx. 40 kW. Recommended differential pressure D p v100 across the fully opened valve (control path AB Æ A) 0.5 < D p v100 < 1 bar (see selection chart) 4 7 2 1 Z 0 4 + – AB A B Refrigeration capacity Q 0 Refrigerant Condensation temperature t c Evaporation temperature t 0 Liquid temperature t fl Selected valve Differential pressure D p v100 across valve 24 kW R22 40 °C + 5 °C 35 °C M3FB15LX/A 0.7 bar The control valve throttles the capacity of a compressor stage. The hot gas is injected directly into the evaporator allowing capacity control from 100 % to approximately 0 %. ∑ Suitable for use in large refrigeration systems in air conditioning applications, to prevent unacceptable fluctuations in temperature between compressor stages. The differential pressure D p v100 across the fully opened valve is determined by the condensation pressure at low load minus the pressure upstream of the evaporator. If no details are provided, the differential pressure D p v100 can be assumed to be 4 bar. 4 7 2 1 Z 0 5+ – A AB Refrigeration capacity Q 0 ,one compressor stage Refrigerant Condensation temperature full/low load t c Evaporation temperature full load/low load t 0 Liquid temperature t fl Differential pressure D p v100 (from R22 vapor table) Selected valve Actual capacity, approx. 30 kW R22 45 / 35 °C 5 / 15 °C 40 / 30 °C 5.6 bar M3FB15LX/A 40 kW The control valve throttles the capacity of a compressor stage. The gas is fed to the suction side of the compressor and cooled by a re-injection valve. Capacity control ranges from 100 % to approx. 10 %. ∑ Suitable for large refrigeration systems for air conditioning, with several compressors or compressor stages, and where the evaporator and compressor are some distance apart (attention must be paid to oil return). The differential pressure D p v100 across the fully opened valve is determined by the condensation pressure at low load minus the suction pressure. If no details are provided, the differential pressure D p v100 can be assumed to be 6 bar. 4 7 2 1 Z 0 6 + – A AB Refrigeration capacity Q 0 of one compressor stage Refrigerant Condensation temperature full/low load t c Evaporation temperature full load/low load t 0 Liquid temperature t fl Differential pressure D p v100 ( from R22 vapor table ) Selected valve 40 kW R22 45 / 35 °C 2 / 10 °C 40 / 30 °C 6.5 bar M3FB15LX/A 3-port hot-gas bypass control application Indirect hot-gas bypass Direct hot-gas bypass6 / 10 SiemensModulating refrigerant valves with magnetic actuator‚ PS43CE2N4721en Building Technologies2018-04-17 The hot-gas diverting valve may be used for modulating recovery of the heat from the condenser, even in the event of high differential pressures. Recommended differential pressure D p v100 across the fully opened valve (control path AB Æ A) 0.5 < D p v100 < 1 bar. 4 7 2 1 Z 0 7 + – + A B AB Example: Refrigeration capacity Q 0 Refrigerant Condensation temperature t c Evaporation temperature t 0 Liquid temperature t fl Selected valve Actual pressure drop D p v100 67 kW R134a 50 °C 2 °C 45 °C M3FB32LX 0.7 bar Mounting notes Mounting instructions are enclosed with the valve: ∑ Nr. 35548 (refrigerant valve) ∑ Nr. 35541 (ZM.. terminal housing) C 4 7 2 1 Z 0 1 ∑ The refrigerant valves can be mounted in any orientation, but upright mounting is preferable. ∑ Arrange the pipework in such a way that the valve is not located at a low point in the plant where oil can collect. ∑ The pipes should be fitted in such a way that the alignment does not distort the valve connections. Fix the valve body so that that it cannot vibrate. Vibration can lead to burst connection pipes. ∑ Before soldering the pipes, ensure that the direction of flow through the valve is correct. ∑ The pipes must be soldered with care. To avoid dirt and the formation of scale (oxide), inert gas is recommended for soldering. ∑ The flame should be large enough to ensure that the junction heats up quickly and the valve does not get too hot. ∑ The flame should be directed away from the valve. ∑ During soldering, cool the valve with a wet cloth, for example, to ensure that it does not become too hot. ∑ Port B must be sealed off when a 2-port valve (control path AB Æ A) is used. ∑ The valve body and the connected pipework should be lagged. ∑ The actuator must not be lagged. 4 7 2 1 Z 0 2 Always switch off the power supply before connecting or disconnecting the ZM.. terminal housing. Installation notes The hot-gas control valves are maintenance-free. The low friction and robust design make regular maintenance unnecessary and ensure a long product life. The valve cannot be repaired. It has to be replaced as a complete unit. Heat recovery Caution Repair7 / 10 SiemensModulating refrigerant valves with magnetic actuator‚ PS43CE2N4721en Building Technologies2018-04-17 Disposal The device is considered electrical and electronic equipment for disposal in terms of the applicable European Directive and may not be disposed of as domestic garbage. ∑ Dispose of the device through channels provided for this purpose. ∑ Comply with all local and currently applicable laws and regulations. Warranty Application-specific technical data must be observed. If specified limits are not observed, Siemens will not assume any responsibility. Technical data Functional actuator data Power supply Extra low-voltage only (SELV, PELV) Operating voltage 1) AC 24 V + 15 % / -10 % Frequency50…60 Hz Typical power consumption P med refer to «Type summary» table Rated apparent power S NA refer to «Type summary» table Required fuse I F 1.6…2.5 A, slow External supply line protectionFuse slow max. 10 A or Circuit breaker max. 13 A Characteristic B, C, D according to EN 60898 or Power source with current limitation of max. 10 A Input Positioning signalZM101/ADC 0…10 V or DC 0…20 V Phs (phase cut) ZM121/ADC 4…20 mA or DC 0…20 V Phs ZM111DC 0…20 V Phs Input resistanceDC 0…10 V> 100 k W Input resistanceDC 4…20 mA< 150 W Positioning timePositioning time< 1 s Electrical connectionsCable entry2 x Pg11 (ZM101/A, ZM121/A) Connection terminalsmax. 1 x 4 mm 2 wire cross-section Min. wire cross-section0.75 mm 2 Functional valve dataPermissible operating pressureMax. 4.3 MPa (43 bar) 2) Max. differential pressure D p max AB Æ A AB Æ B refer to «Type summary» table 0.8 MPa (8 bar) Leakage rate D p = 0.1 MPa (1 bar) AB Æ A AB Æ B max. 0.05 % of k vs -value max. 0.5 % k vs Valve characteristic (stroke, k v )linear (to VDI / VDE 2173), optimized in low opening range8 / 10 SiemensModulating refrigerant valves with magnetic actuator‚ PS43CE2N4721en Building Technologies2018-04-17 Permissible mediafor organic safety refrigerants (R22, R134a, R404A, R407C, R410A, R507 etc.). Not suitable for ammonia (R717) and R723 Medium temperature-40...120 °C Position when de-energizedAB Æ A closed Orientationany Type of operationmodulating Stroke resolution D H / H 100 > 1 : 200 (H = stroke) Pressure tightness to outsidehermetically sealed (fully welded, no static or dynamic seals) MaterialsHousing componentssteel / CrNi steel Seat / inner valvebrass / CrNi steel Pipe connectionsinternally soldered, CrNi steel Dimensions and weightDimensionsrefer to «Dimensions» Weightrefer to table in « Dimensions » Pipe connectionsSleevesinternally soldered sleeves Norms and directivesElectromagnetic compatibility (Application) For residential, commercial and industrial environments Product standardEN60730-x EU Conformity (CE)CA2T4721xx 3) EAC ConformityEurasian conformity for all M3FB.. Housing protection Upright to horizontalIP54 to EN 60529 Environmental compatibility The product environmental declaration contains data on environmentally compatible product design and ssessments (RoHS compliance, materials composition, packaging, environmental benefit, disposal). Pressure Equipment DirectivePED 2014/68/EU Pressure AccessoriesScope: Article 1, section 1 Definitions: Article 2, section 5 Fluid group 2: Fluid group 1 4): DN 15…32 DN 15…25 without CE-marking as per article 4, section 3 1) No operating voltage is required for the DC 0…20 V Phs power positioning signal. 2) To EN 12284, checked with 1.43 x operating pressure at 62 bar 3) The documents can be downloaded fromhttp://siemens.com/bt/download . 4) The manufacturer as well as the operator is obliged to comply with all legal requirements while handling with media belonging to fluid group 1. General environmental conditions Operation EN 60721-3-3 Transport EN 60721-3-2 Storage EN 60721-3-1 Climatic conditions Class 3K6Class 2K3Class 1K3 Temperature -25...55 °C-25...70 °C-5...45 °C Humidity 10...100 % r.h.< 95 % r.h.5...95 % r.h.9 / 10 SiemensModulating refrigerant valves with magnetic actuator‚ PS43CE2N4721en Building Technologies2018-04-17 Connection terminals If a ZM../A terminal housing is used with DC 0…20 V Phs (phase cut), AC 24 V must not be connected! Always switch off the power supply before connecting or disconnecting the ZM.. terminal housing. 1 2 3 4 5 6 ~ ~ – + – + Supply AC 24 V Positioning signal DC 0...10 V DC 0...20 V Phs (phase cut) DC 0...20 V Phs ~ ~ – + – + Supply AC 24 V Positioning signal DC 4...20 mA DC 0...20 V Phs (phase cut) ZM101/A (DC 0...10 V or DC 0...20 V Phs) ZM121/A (DC 4...20 mA oder DC 0...20 V Phs) 4 7 2 1 Z 0 3 e n twisted pairs ZM111 (DC 0...20 V Phs) 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 Connection diagrams Refer to data sheet N4591 for the ZM.. terminal housings Warning10 / 10 SiemensModulating refrigerant valves with magnetic actuator‚ PS43CE2N4721en Building Technologies2018-04-17 Dimensions Dimensions in mm 4 7 2 1 M 0 1 D A B H 3 H 1 H 2 H 2 C L B A DNø DLH1H2H3ABCWeight Type reference [Inch][kg] M3FB15LX06/A 15 ǫ 15065 25 18480 84 674.3 M3FB15LX15/A 15 ǫ 15065 25 18480 84 674.3 M3FB15LX/A15 ǫ 15065 25 18480 84 674.3 M3FB20LX/A 20 Ǭ 17069 30 23810094 848.9 M3FB25LX/A25 1ǩ 20072 36 24810094 949.5 M3FB32LX 32 1Ǫ 25091 43 24510094 9811.4 D: Pipe connections G: Weight (incl. packaging) Revision numbers Type referenceValid up to rev. No. M3FB15LX06/A ..D M3FB15LX15/A ..D M3FB15LX/A ..D M3FB20LX/A ..E M3FB25LX/A ..E M3FB32LX ..F Issued by Siemens Switzerland Ltd Building Technologies Division International Headquarters Theilerstrasse 1a 6300 Zug Switzerland Tel. +41 58-724 24 24 www.siemens.com/buildingtechnologies © Siemens Switzerland Ltd, 2011 Technical specifications and availability subject to change without notice.Next >