Connecting the sensors
Cables with a minimum cross-section of 2 x 0.5 mm² can be connected to the terminals at the
back panel of the housing.
Connecting the actuators
Connect cables with at least 1.5 mm² suitable for damp locations to the terminals of the control-
ler output. The direction of travel needs to be checked at start-up.
4
Set mode switch to (+). Valves must open.
4
Set slide switch to (–). Valves must close.
Connecting the pumps
Connect all cables with at least 1.5 mm² to the terminals of the controller as illustrated in the corre-
sponding connection diagram (–> page 92 to 96).
Wiring plan legend (page 92 to 96):
AA Analog output 0 to 10 V
VFS Flow sensor in storage tank
AE
Analog input 0 to 10 V
VFT Flow sensor in heat exchanger
BA
Binary output
GND Ground
BA1 UP HK1 ON/OFF
GWx Limit alarm to terminal x
BA2 UP HK1 Speed reduced
GWy Limit alarm to terminal y
BA3 UP HK2 ON/OFF
ZB
Meter bus
BA4 UP HK2 Speed reduced
HK
Heating circuit
BE/V Binary input for flow rate
FW District heating circuit
AF
Outdoor sensor
TW DHW circuit
FG
Potentiometer (terminal 3 at Type 5244)
SLP Storage tank charging pump
RF
Room sensor (terminal 1 at Type 5244)
TLP
Heat exchanger charging pump
RüF Return flow sensor
UP
Circulation pump
SF
Storage tank sensor
(1: Storage tank ON; 2: Storage tank OFF)
ZP
Circulation pump
STh Storage tank thermostat
Option Type 5244 or 5257-5
(Terminal base of room panel is illustrated)
VF
Flow sensor
EB 5179 EN
91
