47
Terminals Function
Explanation
X3.1
Switched phase
Via control unit ON/OFF switch
Note
Observe the total load 1000 W of all con-
nected components.
X3.3
X3.4
Flow switch
Requires zero volt
N/O
contact:
■ Closed: Heat pump in operation
■ Open: Heat pump shut down
■ Breaking capacity 230 V~, 0.15 A
Remove jumper when connecting.
X3.6
X3.7
G
Power-OFF (factory-fitted
jumper)
Requires zero volt
N/C
contact:
■ Closed: Heat pump in operation
■ Open: Heat pump shut down
■ Breaking capacity 230 V~, 0.15 A
Remove jumper when connecting.
Note
■ No parameters need to be set
■ The compressor is "forced" off as soon as
the contact opens.
■ Subject to the power supply utility the
power-OFF signal switches off the supply
voltage of the respective working part.
■ For the instantaneous heating water
heater, the stages to be switched off can
be selected (parameter "Output for in-
stant. heating water heater at power-
OFF 790A").
■ The power supply for the heat pump con-
trol unit (3 x 1.5 mm
2
) and the cable for
the power-OFF signal can be combined
in a single 5-core cable.
■ For further information regarding power-
OFF, see chapter "Power supply".
Installation sequence
Electrical connection
(cont.)
5546 699 GB
Installation
Содержание AWT-AC 241.A04
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