Data Sheet for Product

ManualsBrandsSiemens ManualsControl Valves7/8" 2-Port PS43 Modulating Refrigerant Valve with Magnetic Actuator (5 Cv)

CE2N4721en

2020-12-21

Smart Infrastructure

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 à A closed when de-energized

· Robust and maintenance-free

· DN 15…32, k

values 0.6…12 m

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.

Summary of content (10 pages)

PAGE 1
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..
PAGE 2
Type summary Type reference M3FB15LX06/A M3FB15LX15/A M3FB15LX/A M3FB20LX/A M3FB25LX/A M3FB32LX Dpmax SNA Pmed kvs Accessories: ZM.. terminal housing DN 15 15 15 20 25 32 kvs AB ® A [m3/h] Δpmax AB ® A [MPa] [bar] 0.6 1.5 3.0 5.0 8.0 12.0 2.2 2.2 2.2 1.8 1.2 0.
PAGE 3
Sizing Correct valve sizing (to ensure a sufficiently large pressure drop Dpv100 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 pages 5 and 6 show the recommended pressure drop in each case.
PAGE 4
+65 -15 -20 t 0 [°C] +60 -10 tC 10 7.0 .0 5 4.0 3.0 2.0 .5 1 4721D01 +25 +30 +35 ] +50 R134a (R12) [ °C +55 25 C] + t fl[° +30 +35 +40 +45 +50 +55 +60 +65 +10 +5 0 -5 +45 +40 The example refers to 3-port hot-gas bypass control application. Selection chart Dp V1 00 [b a 1.0 .7 r] 0 .5 0 .4 0 .3 0 0.2 .
PAGE 5
Application examples The diagrams shown here are principles only, without installation-specific details. 3-port hot-gas bypass control application 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 Dpv100 across the fully opened valve (control path AB ® A) 0.
PAGE 6
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. Heat recovery Recommended differential pressure Dpv100 across the fully opened valve (control path AB ® A) 0.5 < Dpv100 < 1 bar. + + A B – 4721Z07 AB Example: Refrigeration capacity Q0 Refrigerant Condensation temperature tc Evaporation temperature t0 Liquid temperature tfl Selected valve Actual pressure drop Dpv100 67 kW R134a 50 °C 2 °C 45 °C M3FB32LX 0.
PAGE 7
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.
PAGE 8
Permissible media Medium temperature Position when de-energized Orientation Type of operation Stroke resolution DH / H100 Pressure tightness to outside Materials Dimensions and weight Pipe connections Norms and directives for organic safety refrigerants (R22, R134a, R404A, R407C, R410A, R507 etc.). Not suitable for ammonia (R717) and R723 -40...
PAGE 9
Connection terminals Warning 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. ZM101/A (DC 0...10 V or DC 0...20 V Phs) 1 2 3 4 ~ ~ Supply AC 24 V – Positioning signal + DC 0...10 V ZM111 (DC 0...20 V Phs) 1 1 2 2 3 4 5 5 6 6 3 + DC 0...20 V Phs 4 – DC 0...20 V Phs (phase cut) 5 6 ZM121/A (DC 4...20 mA oder DC 0...
PAGE 10
Dimensions Dimensions in mm 4721M01 A C H3 B H1 A H2 D H2 B L DN Type reference M3FB15LX06/A M3FB15LX15/A M3FB15LX/A M3FB20LX/A M3FB25LX/A M3FB32LX 15 15 15 20 25 32 øD [Inch] ⅝ ⅝ ⅝ ⅞ 1⅛ 1⅜ L 150 150 150 170 200 250 H1 H2 65 65 65 69 72 91 25 25 25 30 36 43 H3 A 184 80 184 80 184 80 238 100 248 100 245 100 B 84 84 84 94 94 94 C 67 67 67 84 94 98 Weight [kg] 4.3 4.3 4.3 8.9 9.5 11.4 D: Pipe connections G: Weight (incl.