STIEBEL ELTRON WPL 10 I - 17. Troubleshooting; 17.1 Controls on the IWS; 17.2 Fan noise; 18. Maintenance

18
Fig. 16
X3 Power supply
HP Heat pump (compressor)
L, N, PE
DHC Booster heater
L, L’, N, PE
Connected
load
Terminal allocation
3.0 kW L N PE
3.2 kW L’ N PE
6.2 kW
L
L’ N PE
X26 (earth)X2NX4PEX3PE
1/N/PE~230/50
1/N/PE~230/50
Provide separate fuses for the three power
circuits heat pump, booster heater and
control.
C26_03_01_0308
Electrical connection
X4 Control terminals
Mains supply: L, N, PE
Outputs:
KOKP Collector circuit pump and N, PE
MKP Mixer circuit pump and N, PE
Pump Heating circuit 2 and N, PE
M(A) Mixer OPEN
M(Z) Mixer CLOSE
HKP Heating circuit pump and N, PE
HS 2 Heat source 2 and N, PE
ZKP DHW circulation pump and N, PE
Ext. ST Stand alone operation
Inputs:
EVU L´ Power supply company enable signal
X2 LV terminal
Pulse Pulse input heat meter measurement
B1 Temperature sensor heat pump flow
B2 Temperature sensor heat pump return
Sensor 1 Temp. sensor HP return (heat consumption)
Temp. sensor DHW cylinder (bottom)
(for solar connection)
Sensor 2 Temp. sensor HP flow (heat usage)
Temp. sensor collector (for solar connection)
T(WW) DHW temperature sensor and earth
T(2. WE) Outside temperature sensor and earth
T(A) Outside temperature sensor and earth
T(MK) Mixer circuit temperature sensor and earth
REM CON. 1 Remote control 1
REM CON. 3 Remote control 3
H BUS high
L BUS Low
BUS ground
“ + “ BUS “ + “
1/N/PE~230/50
1/N/PE~230/50
1/N/PE~230/50
1/N/PE~230/50
X2X4X3PE
WPL 7 AS
WPL 10 AS
WPL 7 IKS
WPL 10 IKS
Mains
HP
Control
HP
Mains
Control
LV
LV
Mains
HP