31
Plug
Sensor
Type
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 Protectn device primry"
).
―
F13
Flow temperature sensor, system (downstream of the heating wa-
ter buffer cylinder and external heat generator)
NTC 10 k
Ω
F14
Flow temperature sensor, cooling circuit (heating circuit 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 source
NTC 10 k
Ω
F21
With heat pump cascades: Flow temperature sensor, swimming
pool
NTC 20 k
Ω
F23
With 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 subscriber (examples):
■
Extension kit, mixer for heating circuit M2/HC2
■
Remote control Vitotrol 200A or Vitotrol 300B (input the heating
circuit assignment 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 distrib-
utor" installation instructions).
—
X24
Connection for LON communication module (see "LON communi-
cation module" installation instructions)
—
X31
Slot for coding card
—
Installation sequence
Electrical connection
(cont.)
5700 542 GB
Installation