29
Internal unit: Luster terminals (signal and safety connections)
Set the required parameters during commissioning:
See from page 50.
Terminals
Function
Explanation
X3.1
Switched phase
Via control unit ON/OFF switch
Note
Observe the total load 1000 W of all connected compo-
nents.
X3.3
X3.4
Flow switch
Requires floating
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 (jumper fitted at the fac-
tory)
Requires floating
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.
■
The power-OFF contact signal switches off the supply
voltage to the relevant function components, subject
to power supply utility.
■
For the instantaneous heating water heater, the
stages to be switched off can be selected (parameter
"Output for Instant.htg wtr heater at power-OFF
790A"
).
■
The power supply for the heat pump control unit
(3 x 1.5 mm
2
) and the cable for the power-OFF signal
can be combined in a single 5-core cable.
■
With heat pump cascades
–
Power supply without on-site load disconnect
:
Only connect the power-OFF signal to the lead heat
pump: See page 37.
–
Power supply with on-site load disconnect
: Con-
nect the power-OFF signal to each heat pump: See
page 38.
■
Further information on power-OFF: See chapter
"Power supply".
In connection with Smart Grid:
Do
not
connect the power-OFF signal.
Do
not
remove jumper.
Installation sequence
Electrical connection
(cont.)
5700 542 GB
Installation
