165
5790 733 - 07
Vitocrossal 300 CA3 Series 2.5 to 6.0 Installation/Service
Coding in the factory set condition
Possible change
“Alternate heating time”
27:15
Alternate heating time 15 min The
DHW tank without priority is heated at
most for the duration of the set cyclical
heating duration if the DHW tank with
priority is already heated up.
27:5
to
27:60
Adjustable from 5 to 60 min.
“Alternate pause time”
28:3
Alternate pause time 3 min After the
selected cyclical heating duration for the
DHW tank without priority has expired,
the rise in collector temperature is
captured during the cyclical pause time.
28:1
to
28:60
Adjustable from 1 to 60 min..
Coding Level 2
“Heating Circuit ...” Group
“Solar” Group
(continued)
Coding
Coding in the factory set condition
Possible change
“Remote control”
a0:0
Without remote control.
a0:1
With Vitotrol 200, recognized
automatically.
a0:2
Recognized automatically with
Vitotrol 300.
“Blocking remote control”
a1:0
All possible settings at the remote
control can be accessed.
a1:1
Only comfort mode can be set at the
remote control.
“Storage tank priority”
a2:2
Tank priority for heating circuit pump
and mixing valve.
a2:0
Without storage tank priority applicable
to heating circuit pump and mixing valve
a2:1
Storage tank priority only applicable to
mixing valve.
a2:3
to
a2:15
Modulating priority applies to mixing
valves, i.e. the heating circuit receives
a reduced amount of heat.
“Temperature limits frost protection function”
a3:2
Outdoor temperature below 34°F (1°C):
Heating circ pump switched on.
Outdoor temperature above 37°F (3°C):
Heating circ pump switched off.
a3:–9
to
a3:15
Heating circuit pump ON/OFF
(see the following table).
CAUTION
If a value below 34°F (1°C) is selected, there is a risk
that pipes outside the thermal envelope of the house
could freeze up. Standby mode in particular should be
taken into consideration, e.g. during holidays.
