INSTALLATION
Mounting
www.stiebel-eltron.com WPF basic | 27
Connections X4: Control unit
L N R RC L L’ N L N PE
S
ON
KS
Kühlen
1 2 3 4 5 6 7 8 9 10 11 12 13
B1
B1
26�03�01�1612
Mains supply: L, N, PE
Outputs:
S Control output for the WPAB
ON Compressor signal
KS Brine pump signal
Cooling Cooling mode
MKP Mixer circuit pump and N, PE
Pump 2. Heating circuit and N, PE
M(A) Mixer open
M(Z) Mixer closed
HKP Heating circuit pump and N, PE
Control inputs:
EVU Power supply utility enable signal
!
Material losses
Only connect energy efficient circulation pumps ap-
proved by us.
When using energy efficient circulation pumps not ap-
proved by us, an external relay with a breaking capacity
of at least 10A/250VAC or our relay set WPM-RBS is
required.
Part no.:
UP 25/7.0 E 232942
UP 25/7.5 E 232943
UP 25/7.5 PCV 235949
UP 30/7.5 E 233947
WPKI-HK E 233602
WPKI-HKM E 233603
Connections X2: Low voltage
1 2 3 4 5 6 7 8 9 10 11 12 13
B1
B1
L N R RC L L’ N L N PE
S
ON
KS
Kühlen
1 2 3 4 5 6 7 8 9 10 11 12 13
B1
B1
26�03�01�1613
B1 Temperature sensor heat pump flow
B2 Temperature sensor heat pump return
T (WW) DHW temperature sensor and earth
T(A) Outside temperature sensor and earth
T(MK) Mixer circuit temperature sensor and earth
Fernb. 1 Remote control 1
Fernb. 3 Remote control 3
H BUS high
L BUS low
BUS ground
“ + “ BUS “ + “
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