WWW.STIEBEL-ELTRON.COM WPF 20/27/40/52/66 | 21
A2 Integral heat pump controller IWS II
B5 Hot gas temperature sensor
B6 Frost sensor (only for ext. inst. or inst. in a room
not free from the risk of frost)
E2 Oil sump heater
F2 High pressure limiter
F7 Protective motor switch. internal
F8 Protective motor switch. external
F9 Solar pump MCB
K1 Safety contactor
K2 Compressor contactor
K4 Brine pump contactor
M1 Compressor motor
N3 Temp. controller - oil sump heater
P1 High pressure transducer
P3 Low pressure transducer
Q1 Softstart contactor
X1 Terminals
X2 LV terminal
X3 Heat pump - mains
X4 Control voltage terminals
X5 Brine pump terminals
X23 Power supply earth terminal block
X24 Power supply earth screw
X28 Plug-in connector terminal strip
X29 Plug-in connector IWS II 12-PIN
X30 Plug-in connector IWS II 3-PIN
X33 Plug-in connector IWS II 5-PIN
X34 Plug-in connector terminal strip - oil sump
heater
X35 Plug-in connector IWS II 6-PIN
Z1 Supressor elemen
Z2 Supressor elemen
14.4 Wiring diagrams for heat pump WPF WPF 52 | 66
8
X2
K1
A2
A1
6
7
Q1
2
1
6
5
4
3
L
1 1
2
1
s u B
Hei ß gas
12
10
9
8
7
H
Einfrierschutz
3
HD/ND
Solepumpe
N
5
4
3
2
1
3
4
5
L
X3
X5
A2
9
10
1 1
12
13
X1
F ü r e l h
2
1
L1
L2 L3
N
K4
6
4
2
1 3 5
K1
6
4
2
1 3 5
14
L
N
X4
euetS.txE r.
1/N /PE AC 50Hz 230V
F2
> p
2
3/N/PE AC 50Hz 400V
3/N/PE AC 50Hz 400V
3 2 1
4
5
X23
X34
N3
X23
X29
X33
X30
21
1
X24
L1
L2 L3
N
K4
A1
A2
Q1
A2
A1
T <
E2
1
2
3
Anschluss Solepumpe
L
H
Kleinspannung
BUS
B6
B6
NO
F9
Z2
6
4
2
1 3 5
br ws sw
br ws sw
3
4
5
2
1
X35
6
P
I
P
I
P3
P1
1
1
2
2
12-18V
X28
B5
M1
M
3
6
4
2
1 3 5
X24
C
T1
S
T2
R
T3
A2
A1
K2
Q1
2
4
6
5
3
1
L3
L2
L1
T1
T2
T3
K2
23
24
A1
A2
X1
1
4
Drossel
Z1
Z1/schräg rechts
Z1/schräg links
F8
5
3
1
2
4
6
T1
T2
F7
> u
M2
M1
3
Störung
26�03�01�0780�c
INSTALLATION
SPECIFICATION
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