Controller And Sensor Pcb (Sensors) - Viessmann Vitocal 300-A Installation And Service Instructions Manual

Electrical connections, heat pump control unit
Terminals Function
X3.17 MCB/fuse F1 6.3 A (slow)
X3.18
X3.18 Heat pump control unit power supply:
Phase L1
X1.1 Earth conductor connection
X2.1 Neutral conductor connection
X5/X7 Connections for heat pump control
cable 230 V~

Controller and sensor PCB (sensors)

Set the required parameters during commissioning:
See from page 56.
Plug Sensor/component
F0.1/F0.2 Outside temperature sensor
F0.2/F0.3 Radio clock receiver (accessories)
F4 Buffer temperature sensor
F6 Cylinder temperature sensor, top
(X25.5/X25.6)
F7 Cylinder temperature sensor, bottom
(X25.7/X25.8)
F8 Secondary circuit flow temperature sensor
(X25.9/X25.10)
F11 Contact humidistat 24 V
Note
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
F13 Flow temperature sensor, system (downstream of the heating water buffer
cylinder and external heat generator)
F14 Flow temperature sensor, cooling circuit (heating circuit without mixer A1/HC1
or separate cooling circuit SKK)
F16 Room temperature sensor, cooling circuit
Required for separate cooling circuit SKK
■
Recommended for heating/cooling circuit without mixer A1/HC1
■
F20 Boiler water temperature sensor, external heat generator
F26 Buffer temperature sensor, cooling
KM BUS (wires interchangeable)
aVG
Use the KM BUS distributor (accessories) if several devices are connected.
KM BUS subscriber (examples):
Mixer extension kit for heating circuit M3/HC3
■
Remote control Vitotrol 200A or Vitotrol 300B: Set heating circuit assign-
■
ment at the remote control.
EA1 extension, AM1 extension
■
Communication interface Vitocom 100, type GSM2
■
Modbus 2 (wires not interchangeable)
sVA
Connection for photovoltaic system electricity meter
(cont.)
Explanation
Power supply 230 V~
–
Installation sequence
Type
NTC 10 k
Ω
DCF
NTC 10 k
Ω
NTC 10 k
Ω
NTC 10 k
Ω
Pt500A
(PTC)
—
NTC 10 k
Ω
NTC 10 k
Ω
NTC 10 k
Ω
NTC 10 k
Ω
NTC 10 k
Ω
NTC 10 k
Ω
—
—
37