45
Plug
Sensor
Type
F13
System flow temperature sensor (downstream of the buffer cylinder and mix-
er for external heat generator)
NTC 10 k
Ω
F14
Flow temperature sensor, cooling circuit (without buffer cylinder, heating cir-
cuit without mixer A1/HC1 or separate cooling circuit SKK)
NTC 10 k
Ω
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
F20
Boiler water temperature sensor, external heat generator
NTC 10 k
Ω
F21
For heat pump cascades: Swimming pool flow temperature sensor
NTC 20 k
Ω
F23
For heat pump cascades: Buffer outlet temperature sensor
NTC 10 k
Ω
aVG
KM-BUS (wires interchangeable)
Use the KM-BUS distributor (accessories) if several devices are connected.
KM-BUS subscribers (examples):
■
Mixer extension kit for heating circuit M3/HC3
■
Remote control (set heating circuit allocation on the remote control)
■
EA1 extension, AM1 extension
—
sVA
Modbus (do
not
interchange the wires)
Connection for energy meter of photovoltaic system
—
J1
Jumper for Modbus terminator
Terminator active (delivered condition)
Terminator not active
—
X18
Modbus (do
not
interchange the wires)
■
Connected at the factory: Modbus cable to the outdoor unit
or
■
Modbus distributor (accessories) if additional devices are to be connected,
e.g. Vitovent 300-F: See "Modbus distributor" installation instructions.
—
X24
Connection for LON communication module (see "LON communication mod-
ule" installation instructions)
—
X31
Coding card slot
—
a:D
A
PWM signal connection for heating circuit pump M2/HC2
—
Swimming pool heating
Note
■
Swimming pool heating is controlled via EA1 exten-
sion with KM BUS.
■
With heat pump cascades, install the swimming pool
flow temperature sensor downstream of the 3-way
diverter valve for "Swimming pool" and connect it to
terminal F21 on the controller and sensor PCB of the
lead heat pump.
■
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.)
6150148
Installation