Data Sheet for Product

2/20
Siemens Modulating refrigerant valves with magnetic actuator, PS45 CE2N4714en
Smart Infrastructure 2021-08-02
Type summary
Type reference
DN
k
vs
k
vs
reduced
1)
∆p
max
Q
0
E
Q
0
H
Q
0
D
[m
3
/h]
[m
3
/h]
[MPa]
[kW]
[kW]
[kW]
MVL661.15-0.4 15
0.40
2.5
38
11
1.6
0.25
24
6.9
1.0
MVL661.15-1.0 15
1.0
96
27
4.1
0.63
61
17
2.6
MVL661.20-2.5 20
2.5
242
69
10
1.6
155
44
6.6
MVL661.25-6.3 25
6.3
610
176
26
4
387
111
16
MVL661.32-10 32
10
1.6
969
279
41
6.3
610
176
26
MVL661.32-12 32
12
0.2
2) 2)
49
8
2) 2)
33
1)
63% of k
vs
, refer to "k
vs
reduction" on page 4
2)
MVL661.32-12.0 is only approved for suction throttle applications
k
vs
Nominal flow rate of refrigerant through the fully open valve (H
100
) at a differential pressure of
100 kPa (1 bar) to VDI 2173
Q
0
E Refrigeration capacity in expansion applications
Q
0
H Refrigeration capacity in hot-gas compressor bypass applications
Calculated base: Isentropic efficiency of 0.67
Q
0
D Refrigeration capacity in suction throttle applications and ∆p = 0.5 bar
Q
0
With R448A at t
o
= -10°C and t
c
= 45°C
The pressure drop across evaporator and condenser is assumed to be 0.3 bar each, and 1.6 bar
upstream of the evaporator (e.g. spider).
The capacities specified are based on superheating by 6 K and subcooling by 2 K.
The refrigeration capacity for various refrigerants and operating conditions can be
calculated for the 3 types of application using the tables on page 15 .
For accurate valve sizing, we recommend the valve selection program "Refrigeration
VASP".
ASR70 extends the application range of valves for refrigerant temperatures at the valve
inlet below 0° C. Typical applications pump systems with CO
2
refrigerant machines.
Direct mounting on refrigerant valve, no adjustments.
See data sheet A6V11858863.
The PTC conductive heating element is
supplied complete with Mounting
Instructions A6V11858868.
Ordering
Valve body and magnetic actuator form one integral unit and cannot be separated.
If the valve’s electronics become faulty, the entire electronics housing must be replaced
by spare part ASR61, supplied complete with mounting instructions (74 319 0270 0).
See table on page 20.
Accessories
PTC conductive heating
element ASR70
Example:
Product number
Stock number Designation
MVL661.15-0.4
MVL661.15-0.4
Refrigerant valve
Spare parts
Rev. no.