User Manual

ManualsBrandsSiemens ManualsRefrigeration Valves (BC7)Modulating refrigerant valves with magnetic actuator, PS45, MVL661..EX

A6V11160426en

2018-02-06

Building Technologies

A6V11160426

II 3G

Operating Instruction

Modulating refrigerant

valves with magnetic

actuator, PS45

MVL661..EX

Hermetically sealed, for safety refrigerants

∂ One valve type for expansion, hot-gas and suction throttle applications

∂ Certification per ATEX Directive 2014/34/EU

∂ Test certificate: SEV 17 ATEX 0110 X

∂ Four valve sizes with k

values from 0.25 to 6.3 m³/h

∂ Selectable standard interface DC 0/2...10 V or DC 0/4...20 mA

∂ Short positioning time (< 1 s)

∂ Closed when deenergized

∂ Hermetically sealed towards outside

∂ Robust and maintenance-free

Use

Refrigerant valve MVL661..EX is a device per ATEX Directive 2014/34/EU Appendix II

from device group II category 3G that may be used per directive 99/92/EG (ATEX 137)

in zone 2 as well as gas groups IIA, IIB, and IIC, at risk of explosion by flammable

materials in the range of temperature classes T1 to T4.

The permissible ambient temperature range is -25°C to +55°C.

The housing must be protected against shock waves for a temperature range of -25 °C

≤ Tamb ≤ -15 °C. See Requirement "Environment" under Special conditions for

protection against explosion, page 9.

II 3G Ex ec IIC T4 Gc

Summary of content (14 pages)

PAGE 1
A6V11160426 II 3G Operating Instruction Modulating refrigerant valves with magnetic actuator, PS45 MVL661..EX Hermetically sealed, for safety refrigerants ∂ ∂ ∂ ∂ ∂ ∂ ∂ ∂ ∂ One valve type for expansion, hot-gas and suction throttle applications Certification per ATEX Directive 2014/34/EU Test certificate: SEV 17 ATEX 0110 X Four valve sizes with kvs values from 0.25 to 6.3 m³/h Selectable standard interface DC 0/2...10 V or DC 0/4...
PAGE 2
Type summary Type Item no. DN MVL661.15-0.4EX S55320-M106 15 MVL661.15-1.0EX S55320-M107 15 MVL661.20-2.5EX MVL661.25-6.3EX S55320-M108 S55320-M109 kvs 3 [m /h] kvs reduced 3 [m /h] 1) Χpmax [MPa] 0.40 0.25 1.0 0.63 2.5 20 2.5 1.6 6.3 25 4 Q0 E [kW] Q0 H [kW] Q0 D [kW] 47 9.2 1.7 29 5.7 1.0 117 23 4.2 74 14 2.6 293 57 10 187 37 6.
PAGE 3
Operator controls and indicators in the electronics housing If the positioning signal is interrupted, or in the event of a power failure, the valve’s return spring will automatically close control path A ↑ AB.
PAGE 4
ZC – Function Forced control input ZC Fully open G G Closed G Transfer Connections No function function ∂ ZC not connected ∂ ZC connected to G ∂ Valve will follow the Y-signal ∂ Valve will fully open control path A ⇓ AB ∂ Minimum stroke set-ting ∂ ZC connected to G0 ∂ Valve will close control path A ⇓ AB with potentiometer Rv possible Signal priority 1. Forced control signal ZC 2. Signal input Y and/or minimum stroke setting with potentiometer Rv possible.
PAGE 5
Connection type 1) Always give preference to a 4-wire connection! Product number SNA PMED STR PTR IF [VA] [W] [VA] [W] [A] 2 Wire cross-section [mm ] 2) 1,5 2,5 4,0 max. cable length L [m] 4-wire connection MVL661..EX 32 12 ″ 50 ″ 40 1,6…4 A 65 110 160 3-wire connection MVL661..
PAGE 6
Sizing For accurate valve sizing, we recommend using the "Refrigeration VASP" software sizing tool, available from your local Siemens office. Engineering notes Depending on the application, additional installation instructions may need to be observed and appropriate safety devices (e.g. pressure switches, full motor protection, etc.) fitted.
PAGE 7
II 3G Mounting notes Use only properly qualified technicians to mount and commission the valve. The same applies to replacement electronics and configuring the controller (e.g. SAPHIR or PolyCool). Comply with all requirements per EN 60079-14 for use/installation of the valve. Additional installation notes may also need be observed as well as the use of proper safety elements (e.g. pressure switches, motor protection) depending on the particular application.
PAGE 8
Connection terminals Connection diagrams Terminal assignment for controller with 4-wire connection (to be preferred!) Common transformer Separate transformer Terminal assignment for controller with 3-wire connection Common transformer Separate transformer U Indication of valve position (only if required). DC 0...10 V → 0...100% volumetric flow V100 Twisted pairs. If the lines for AC 24 V power supply and the DC 0...10 V (DC 2...10 V, DC 0... 20 mA, DC 4...
PAGE 9
II 3G Special conditions of safe use for Ex Equipment Cabling and conduits The MVL661 *** refrigerating valve are to be connected via cable and corresponding Ex certified cable glands suitable for this purpose. Cable and conduit entries The unused inlet openings with predefined breakouts locations shall be closed with separate "Ex e" sealing plugs.
PAGE 10
Disposal The valve 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 valve 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 Building Technologies / CPS Products will nor assume any responsibility.
PAGE 11
Technical data Functional actuator data Power supply AC 24 V Extra low-voltage only (SELV, PELV) Operating voltage Frequency Typical power consumption Pmed Standby Rated apparent power SNA Required fuse External supply line protection DC 24 V Signal inputs Signal outputs Positioning time Electrical connections Product data valve Operating voltage Current draw Control signal Y Impedance DC 0/2...10 V Impedance DC 0 / 4...
PAGE 12
Materials Pipe connections Dimensions and weight Norms and directives Media temperature at valve outlet (AB) Stroke resolution ΧH/H100 Hysteresis Mode of operation Position when deenergized Orientation Valve body and parts Seat / piston Sealing disk Sleeves Electromagnetic compatibility (Application) Product standard EU Conformity (CE) Electrical safety Protection class Degree of pollution Housing protection Upright to horizontal Vibration 5) Environmental compatibility ATEX directive area ATEX certific
PAGE 13
Dimensions H3 H1 H2 D H4 min. 100 mm Dimensions in mm L Type reference DN MVL661.15-0.4EX 15 MVL661.15-1.0EX MVL661.20-2.5EX MVL661.25-6.3EX DN D T M D [inch] L [mm] H1 [mm] H2 [mm] H3 [mm] H4 [mm] T [mm] M [kg] 5/8" 140 44 36 113 160 103 4.4 15 5/8" 140 44 36 113 160 103 4.4 20 7/8" 150 41 41 119 160 103 4.5 25 1 1/8" 160 40 47 126 160 103 4.
PAGE 14
ATEX label Siemens Switzerland Ltd, 6300 Zug, Switzerland Type MVL661*** / MVS661*** II 3G Ex ec IIC T4 Gc SEV 17 ATEX 0110 X WARNING – POTENTIAL ELECTROSTATIC CHARGING Revision numbers Product number Valid from rev. no. MVL661.15-0.4EX ..A MVL661.15-1.0EX ..A MVL661.20-2.5EX ..A MVL661.25-6.3EX ..A Issued by Siemens Switzerland Ltd Building Technologies Division International Headquarters Gubelstrasse 22 6301 Zug Switzerland Tel. +41 58-724 24 24 www.siemens.