Data Sheet for Product

2/10
Siemens Modulating refrigerant valves with magnetic actuator, PN 32 CE2N4722en
Smart Infrastructure 2020-12-21
Type summary
Type reference
DN
k
vs
D
p
max
S
NA
P
med
Liquid Gas
[m
3
/h] [MPa] [bar] [VA] [W]
M3FK15LX06
15
0.6
0.2 0.8
13
3
M3FK15LX15
15
1.5
13
3
M3FK15LX
15
3.0
13
3
M3FK20LX
20
5.0
16
4
M3FK25LX
25
8.0
16
4
M3FK32LX
32
12.0
20
5
M3FK40LX
40
20.0
40
10
M3FK50LX
50
30.0
40
10
Dp
max
= Maximum permissible differential pressure across the valve’s control path 1 ® 3 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 open valve (H
100
) by a differential pressure of
100 kPa (1 bar), to VDI 2173
Type reference Operating voltage Positioning signal Working range Data sheet
ZM101/A AC 24 V DC 0…10 V DC 4…8 V
N4591ZM121/A AC 24 V DC 4…20 mA DC 8…16 mA
ZM111 DC 0…20 V Phs DC 10…15 V Phs
For the ZM101/A and ZM121/A types also the DC 0…20 V Phs positioning signal is possible without
operating voltage.
The M3FK..LX.. valve and the ZM.. or ZM../A terminal housing must be ordered
separately.
When placing an order, please specify the quantity, product description and type code.
Valves and terminal housings are packed separately.
Overview table, see page 9.
Technical and mechanical 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 open. This reduces pressure losses and ensures quiet
operation.
The valves are fitted with extended female solder unions, making pipe connection easy.
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 etc.). 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 1 -> 3)
if the power is switched off or fails.
Accessories /
ZM.. terminal housing
Order
Type reference Stock number Description
M3FK15LX M3FK15LX Refrigerant valve
ZM101/A ZM101/A Terminal housing
Delivery
Rev. no.