ST22: Optional output 3 (WA3): Activation of external pellet/oil/gas boiler
ST22: Optional output 3 (WA3): Activation of electric heating element
ST23: Optional output 4 (WA4): Load-/ Unload valve Y2
3- point-actuator:
ST24: Option output 5 (WA5): Return valve Y1
3-point-actuator:
KL1: N-Load-/ Unload valve Y2
KL2: PE-Load-/ Unload valve Y2
KL3: Y1-Load-/ Unload valve Y2
KL4: Y2- Load-/ Unload valve Y2
Load valve: Phase at Y1 equates: Valve opens: large accumulator circuit
Phase at Y2 equates: Valve closes: small accumulator circuit
Unload valve: Phase at Y1 equates: Valve opens: Consumer-return to the lower accumulator
Phase at Y2 equates: Valve closes: Consumer-return to the upper accumulator
Please be mindful of the correct connection.
KL1: N- Return valve Y1
KL2: PE- Return valve Y1
KL3: Y1- Return valve Y1
KL4: Y2- Return valve Y1
Y1 equates: Valve opens: Accumulator circuit
Y2 equates: Valve closes: Boiler circuit
Please be mindful of the correct connection.
Please only use an adaptable cable with a 0.75 mm
2
cross
section.
On this output a Load- or an Unload valve can be
connected alternatively.
Please only use an adaptable cable with a 0.75 mm2 cross
section.
Please follow the local safety regulations and be mindful
of the correct connection.
An additional controller to control the switching valve Y3
and the oil/gas boiler must be installed. Please consult
the boiler manufacturer.
KL1: N-Contactor
KL2: PE-Contactor (if required)
KL3: L-Contactor
KL4: WK: Phase input
KL5: Free
KL6: L-Si-Optional output 3
(Fused by 6.3A MT on the plug board via
Si1)
Please be mindful of the correct
connection.
KL1: N-contactor
KL2: PE-contactor (if required)
KL3: L-contactor
KL4: WK: Input phase
KL5: Free
KL6: L-Si-Optional output 3
(Fused by 6.3A M at the plug
board via Si1)
Please note: The optional output WA3 may be loaded
with a power of Imax=5A. Hence: Always use a contactor
or an auxiliary relay.
Only use an electric immersion heater with an integrated
safety thermostat.
Please follow the local safety regulations and be mindful
of the correct connection.
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