41
Terminals
Function
Explanation
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 power
supply to the relevant components, subject to the
power supply utility.
■
For the instantaneous heating water heater, the
stages to be switched off can be selected (parameter
"Output for instant. heating water heater at pow-
er-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 disconnec-
tion
: Only connect the power-OFF signal to the
lead heat pump: See page 52.
–
Power supply with on-site load disconnection
:
Connect the power-OFF signal to all heat pumps:
See page 52.
■
For further information regarding power-OFF: see
chapter "Power supply".
In connection with Smart Grid:
Do
not
connect the power-OFF signal.
Do
not
remove jumper.
X3.8
X3.9
Type AWB(-M)-E-AC:
■
Frost stat
and/or
Contact humidistat 230 V~
■
Or
jumper
Type AWB(-M):
■
Jumper
Requires floating contact:
■
Closed: Safety chain has continuity
■
Open: Safety chain interrupted; heat pump shut down
■
Breaking capacity 230 V~, 0.15 A
Connection:
■
Connected in series if both safety components are in-
stalled
■
Insert jumper if no safety components are instal-
led.
X40.L1
Heat pump control unit power supply:
Phase L1
X40.
?
Earth conductor terminal
X40.N Neutral conductor terminal
Power supply 230 V~: See page 47 onwards.
Indoor unit: controller and sensor PCB (LV connections)
Set the required parameters during commissioning:
See page 66 onwards.
Sensors
Plug
Sensor
Type
F0.1/F0.2
Outside temperature sensor
NTC 10 k
Ω
F0.2/F0.3
Radio clock receiver (on site)
DCF
F4
Buffer temperature sensor
NTC 10 k
Ω
Installation sequence
Electrical connection
(cont.)
5790 931 GB
Installation
