Indoor Unit: Controller And Sensor Pcb (Lv Connections) - Viessmann Vitocal 200-A Installation And Service Instructions Manual

Installation sequence
Electrical connection
Terminals Function
X3.8 Type AWO(-M)-E-AC:
X3.9 Frost stat
■
and/or
Contact humidistat 230 V~
Or jumper
■
Type AWO(-M)/AWO(-M)-E:
Jumper
■
X40.L1 Heat pump control unit power supply:
Phase L1
X40.
?
X40.N Neutral conductor terminal

Indoor unit: Controller and sensor PCB (LV connections)

Set the required parameters during commissioning:
See page 62 onwards.
Sensors
Plug Sensor
F0.1/F0.2 Outside temperature sensor
F0.2/F0.3 Radio clock receiver (on site)
F4 Buffer temperature sensor
F6 Cylinder temperature sensor, top
(X25.5/X25.6)
F7 Cylinder temperature sensor, bottom
(X25.7/X25.8)
F11 Contact humidistat 24 V
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
40
(cont.)
Earth conductor terminal
Explanation
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 51.
– Power supply with on-site load disconnection:
Connect the power-OFF signal to all heat pumps:
See page 51.
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.
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.
Power supply 230 V~: See page 46 onwards.
Type
NTC 10 k
Ω
DCF
NTC 10 k
Ω
NTC 10 k
Ω
NTC 10 k
Ω
―
NTC 10 k
Ω