Product Overview

The example refers to 3-port hot-gas bypass control application.
Selection ch
art
4721D01
+10
+5
0
-5
-10
-15
-20
-25
-30
-35
-40
+10
+5
0
-5
-10
-15
-20
-25
-30
-35
-40
+10
+5
0
-5
-10
-15
-20
-25
-30
-35
-40
t
0
[
°
C
]
+5°C
Q
0
[
k
W
]
m
[
k
g
/
h
]
1
0
0
2
0
0
3
0
0
4
0
0
6
0
0
1
0
0
0
2
0
0
0
4
0
0
0
6
0
0
0
1
0
0
0
0
2
0
0
0
0
4
0
0
0
0
5
6
8
10
15
20
30
40
50
60
80
100
150
200
300
400
500
600
800
1000
R134a
(R12)
R407C
(R22)
R404A
R507
(R502)
t
0
[
°
C
]
t
0
[
°
C
]
.
.
Δ
p
V
1
0
0
[
b
a
r
]
t
f
l
[
°
C
]
+
2
5
+
3
0
+
3
5
+
4
0
+
4
5
+
5
0
+
5
5
+
6
0
+
6
5
+
4
0
+
4
5
+
5
0
+
5
5
+
6
0
+
6
5
M
3FB
15
L
X15
/A
t
f
l
[
°
C
]
+
2
5
+
4
5
+
5
0
+
5
5
+
6
0
+
6
5
+
4
0
+
3
5
+
3
0
k
vs
1,
5
M
3FB
15
L
X06
/A
k
vs
0,
6
M
3FB
1
5
L
X/A
k
v
s
3
M
3FB
2
0
L
X/
A
k
v
s
5
M
3FB
2
5
L
X/
A
k
v
s
8
M
3F
B
32
L
X
k
vs
12
+
6
5
+
5
5
+
4
5
+
3
5
+
2
5
+
6
5
+
6
0
+
5
5
+
5
0
+
4
5
+
4
0
+
3
5
+
3
0
+
2
5
1
0
7
.
0
5
.
0
4
.
0
3
.
0
2
.
0
1
.
5
1
.
0
0
.
7
0
.
5
0
.
4
0
.
3
0
.
2
0
.
1
5
t
C
[
°
C]
Δ
p
V
1
0
0
[
b
a
r
]
+
6
5
+
5
5
+
4
5
+
3
5
+
2
5
+
6
5
+
6
0
+
5
5
+
5
0
+
4
5
+
4
0
+
3
5
+
3
0
+
2
5
t
C
[
°
C
]
Δ
p
V
1
0
0
[
b
a
r
]
+
6
5
+
5
5
+
4
5
+
3
5
+
2
5
+
6
5
+
6
0
+
5
5
+
5
0
+
4
5
+
4
0
+
3
5
+
3
0
+
2
5
t
C
[
°
C
]
1
0
7
.
0
5
.
0
4
.
0
3
.
0
2
.
0
1
.
5
1
.
0
0
.
7
0
.
5
0
.
4
0
.
3
0
.
2
0
.
1
5
1
5
1
0
7
.
0
5
.
0
4
.
0
3
.
0
2
.
0
1
.
5
1
.
0
0
.
7
0
.
5
0
.
4
0
.
3
0
.
2
0
.
1
5
1
5
t
f
l
[
°
C
]
+
2
5
+
3
0
+
3
5
Δ
p
V
k
v
s
2
0
(
M
3
F
K4
0
L
X)
k
v
s
3
0
(
M
3
F
K5
0L
X)
24
t
0
= Evaporation temperature [°C]
t
c
= Condensation temperature [°C]
t
fl
= t
c
– degree of subcooling [°C]
Q
0
= Refrigeration capacity [kW]
m = Mass flow of refrigerant [kg/h]
Δp
v100
= Admissible differential pressure
[bar], installation-specific
k
vs
= Nominal flow rate [m
3
/h] of cold water through
the fully opened valve (H
100
) by a differential
pressure of 100 kPa (1 bar)
4 / 10
Siemens Modulating refrigerant valves with magnetic actuator‚ PS43 CE2N4721en
Building Technologies 03.05..2011