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Pressure reducing valve specifications
The pressure drop graphic of the pressure reducing valve is
shown below.
7
6
5
4
A
3
2
1
0
0
10
20
30
40
70% back pressure
Open outlet
A Pressure drop (bar)
B Flow rate (l/min)
The outlet flow rates in function of inlet flow and inlet pressure
are shown below.
Outlet flow (l/min)
Static inlet
pressure
(bar)
10
20
30
1
10
18
25
2
10
19
27
3
10
20
28
4
10
20
28
5
10
20
29
Installation manual
13
50
60
70
80
90
B
Inlet flow (l/min)
40
50
60
70
80
30
34
37
39
40
34
40
44
48
51
36
42
48
53
57
37
44
51
56
61
37
46
53
60
66
Field wiring diagram
EKUHW2WB
solenoid
valve
Y1S
domestic hot water tank
electrical box
100
90
42
53
60
65
E4H ........................Booster heater
71
F2B.........................Fuse booster heater
F2U.........................Fuse 5 A/250 V
K3M ........................Contactor booster heater
L .............................Live
N.............................Neutral
Q2T ........................Thermostat domestic hot water tank
Q2L.........................Thermal protector domestic hot water tank
Q3L.........................Thermal protector booster heater
Y1S.........................Solenoid valve
X1M ........................Terminal block
X5M~X7M ..............Terminal block
..........................Protective earth
...................Field wiring
Domestic hot water tank with option kit for air to water heat pump
A1
A2
unit switch box
2
Q2T
1
2
Q2L
1
X5M
X7M
F2U
X2M
13 14
Q3L
3
Q2L
E4H
4
EKUHWBB + EKUHW2WB + EKHWSU150-300B3V3
F2B
R
S
T
K3M
U
V
W
1 2 X4M
X6M
3
4
system
4P344370-1B – 2019.08
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