Viessmann Vitocal 350-A Installation And Service Instructions Manual page 127

Further details regarding the individual steps
Heating circuit 2
Heating circuit 3
DHW (DHW cylinder)
Swimming pool
Electric heater (instanta-
neous heating water
heater, accessory)
Heat pump
Defrosting
Lag heat pumps (cas-
cade)
External heat source
Note
The relevant symbols on the display are
animated if the compressor or pumps are
running.
Integrating a heat pump control unit into a LON
The LON communication module
(accessory) must be plugged into the
heat pump control unit (see page 89).
Commissioning, inspection, maintenance
Aim
Venting
Venting
Venting
Function check
Function check
Function check
Function check
Function check
Note
Configuration and setting parameters
can also be carried out without the com-
missioning assistant (see page 169,
separate menu tree and operating
instructions).
Note
The data transfer via the LON system
can take several minutes.
(cont.)
System characteristics
Heating circuit pump 2 or 3 is
started. Open/close mixer every
5 min.
Secondary pump and cylinder
primary pump are started.
Diverter valve for central/DHW
heating is changed over every
minute, or the circulation pump
for cylinder heating is started.
Secondary pump is started.
Swimming pool output is
switched on/off every minute.
Secondary pump is started.
Immersion heater regulates to
35 °C flow temperature.
Fan and secondary pump are
started. Heat pump is regulated
to a return temperature to the
heating circuit of 30 °C.
Heat pump is defrosted.
External heat pumps are regula-
ted to a return temperature to the
heating circuit of 30 °C.
External heat source is regula-
ted to a flow temperature to the
heating circuit of 35 °C.
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