44
Terminals
Function
Explanation
■
With heat pump cascades
–
Power supply without on-site load disconnect:
Only connect the power-OFF signal to the lead heat
pump.
–
Power supply with on-site load disconnect:
Con-
nect the power-OFF signal to all heat pumps.
■
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
Only for heat pumps
with
a cooling
function:
■
Frost stat
and/or
Contact humidistat 230 V~
■
Or
jumper
For heat pumps
without
a cooling
function:
■
Jumper
Requires floating
N/C
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~
Indoor unit: Controller and sensor PCB (extra low voltage (ELV) connections)
Set the required parameters during commissioning:
See page 66 onwards.
Sensors
Plug
Sensor
Type
F0
Outside temperature sensor
NTC 10 k
Ω
F4
Buffer temperature sensor
NTC 10 k
Ω
F6
(X25.5/X25.6)
Cylinder temperature sensor, top
NTC 10 k
Ω
F7
(X25.7/X25.8)
Cylinder temperature sensor, bottom
NTC 10 k
Ω
F11
Contact humidistat 24 V
Or
jumper
Note
■
System with buffer cylinder for heating water/coolant:
If cooling takes place over multiple heating/cooling circuits, provide a con-
tact humidistat for each heating/cooling circuit.
Connect multiple contact humidistats in series.
■
If a 230 V~ contact humidistat (connection to X3.8/X3.9) is used for cooling,
insert a jumper
, otherwise the heat pump will not start (message
"CA Pro-
tectn device primry"
).
―
F12
Flow temperature sensor, heating circuit with mixer M2/HC2
NTC 10 k
Ω
Installation sequence
Electrical connection
(cont.)
6150148
Installation
