Data Sheet for Product

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Siemens Modulating refrigerant valves, PN 63 CE2N4717en
Smart Infrastructure 2019-11-25
b) Refrigerant valve MVS661..N for capacity control of a chiller.
4717Z08
+
-
MVS661..N
· Typical control range 10...100 %
· Energy-efficient operation with low loads
· Allows wide adjustment of condensing and
evaporating temperatures
· Ideal for use with plate heat exchangers
· Very high degree of frost protection
A larger valve may be required for low-load operation than is needed for full load condi-
tions. To ensure that the selected valve will not be too small for low loads, sizing should
take account of both possibilities.
R717 R22
t
c
\ t
o
-40 -30 -20 -10 0 10 t
c
\ t
o
-40 -30 -20 -10 0 10
00 324 265 124 00 82 68 37
20 481 488 494 481 376 124 20 101 104 107 105 81 18
40 581 590 598 605 612 618 40 108 111 114 118 120 123
60 662 673 683 693 701 708 60 104 108 112 116 119 122
R744 R134a
t
c
\ t
o
-40 -30 -20 -10 0 10 t
c
\ t
o
-40 -30 -20 -10 0 10
-20 226 149 00 27
00 262 264 241 166 20 71 74 77 66 43
20 245 247 247 246 213 40 74 78 81 85 89 92
60 67 72 76 81 85 89
R402A R401A
t
c
\ t
o
-40 -30 -20 -10 0 10 t
c
\ t
o
-40 -30 -20 -10 0 10
00 73 69 50 00 31
20 77 81 85 88 74 35 20 80 83 85 72 46
40 71 75 80 84 88 91 40 87 90 94 97 101 102
60 50 55 60 65 69 74 60 85 89 94 98 102 106
R407A R404A
t
c
\ t
o
-40 -30 -20 -10 0 10 t
c
\ t
o
-40 -30 -20 -10 0 10
00 79 67 40 00 69 63 44
20 91 95 98 102 82 30 20 70 74 78 81 68 30
40 89 94 98 102 106 110 40 61 65 70 74 78 81
60 72 77 82 87 92 96 60 36 41 46 51 55 59
R407C R407B
t
c
\ t
o
-40 -30 -20 -10 0 10 t
c
\ t
o
-40 -30 -20 -10 0 10
00 79 65 31 00 72 66 45
20 98 101 105 108 85 21 20 77 80 84 88 75 34
40 100 104 109 113 117 121 40 69 74 78 83 87 91
60 87 93 98 103 108 113 60 46 51 56 61 66 70
R507 R410A
t
c
\ t
o
-40 -30 -20 -10 0 10 t
c
\ t
o
-40 -30 -20 -10 0 10
00 72 66 47 00 116 117 91 12
20 78 81 83 86 71 33 20 125 130 133 137 120 69
40 74 78 81 84 87 90 40 119 124 129 133 137 140
60 53 57 61 64 68 71 60 90 96 101 106 110 114
· With superheat = 6 K With subcooling = 2 K ∆p upstream of evaporator = 1.6 bar
· ∆p condenser = 0.3 bar ∆p evaporator = 0.3 bar
No
te
Correction table KE
Expansion valve