38
Plug
Sensor
Type
F16
Room temperature sensor, cooling circuit
■
Required for separate cooling circuit SKK
■
Recommended for heating/cooling circuit without mixer A1/HC1
NTC 10 k
Ω
F21
Collector temperature sensor
NTC 20 k
Ω
F23
Solar circuit return temperature sensor
NTC 10 k
Ω
aVG
KM BUS (wires interchangeable)
Use the KM BUS distributor (accessories) if several devices are connected.
KM BUS subscriber (examples):
■
Extension kit, mixer for heating circuit M2/HC2
■
Remote control Vitotrol 200A or Vitotrol 300B (set the heating circuit assign-
ment at the remote control)
■
EA1 extension, AM1 extension
■
Communication interface Vitocom 100, type GSM2
—
sVA
Modbus 2 (wires
not
interchangeable)
Connection for electricity meter of photovoltaic system
—
J3
Jumper for terminator Modbus 2
Terminator enabled (delivered condition)
Terminator disabled
—
J4
Jumper for setting master/slave Modbus 2
Heat pump control unit is slave
Heat pump control unit is master (delivered condition)
—
X18
Modbus 1
Connection for Viessmann appliances, e.g. Vitovent 300-F
Note
If further Viessmann appliances are to be connected to Modbus 1, plug in the
Modbus distributor (accessories) (see "Modbus distributor" installation in-
structions).
—
X24
Connection for LON communication module (see "LON communication mod-
ule" installation instructions)
—
X31
Slot for coding card
—
Swimming pool heating
Note
■
Swimming pool heating is controlled via the
EA1 extension with KM BUS.
■
Make connections to EA1 extension
only
in accord-
■
A filter circuit pump
cannot
be controlled via the heat
pump control unit.
Installation sequence
Electrical connection
(cont.)
5700 582 GB
Installation
