INSTaLLaTION
Power supply
36
| WPL 15 IKS | WPL 25 IK
www.stiebel-eltron.com
11.2.4 Control voltage
26
�0
3�
01
�1
76
2
X4 Control voltage (control outputs)
HKP
Mz
MA
EVU
MKP
L
Heating circuit pump and N (X25), PE
Mixer closed
Mixer open
Enable signal
Mixer circuit pump and N (X25), PE
X30 Control voltage to external unit
L, N, PE
!
Material damage
Energy efficient circulation pumps must not be connected
directly to the heat pump manager. Use an external relay
with a breaking capacity of at least 10 A/250 V AC or our
relay set WPM-RBS.
f
f
Route cables and leads through the strain reliefs.
f
f
Check the function of the strain relief fittings.
11.2.5 Low voltage, BUS cable and service
26
�03
�0
1�
17
63
X2 Low voltage
Fernb. 3
Heating circuit pump and N (X25), PE
Fernb. 1
Mixer closed
T(MK)
Mixer circuit temperature sensor and earth (X26)
T(A)
Outside temperature sensor and earth (X26)
T(Puffer)
Buffer cylinder sensor
CaN bus (for remote control and ISG)
+
Power supply (not for ISG)
⊥
Ground
L
Low
H
High
X5 BUS cable to external unit
BUS G
BUS –
BUS +
X6 Service (for customer support)
G
Ground
H
High
L
Low
f
f
Route cables and leads through the strain reliefs.
f
f
Check the function of the strain relief fittings.