Viessmann Vitoladens 300-W Service Instructions For Contractors page 54

Codes
Code 2
(cont.)
Coding in the delivered condition
Burner
F8:-5 For operation in reduced
room temperature mode,
the set room temperature
will be raised (up to the
temperature limit set by
coding address F9) to a
value that is subject to the
outside temperature, if
the outside temperature
falls below -5 °C, see
example on page 86.
Observe the setting of
coding address A3.
F9:-14 Below an outside temper-
ature of -14 °C, the set
room temperature will be
raised to the value selec-
ted as set room tempera-
ture, if the system oper-
ates with the standard
room temperature, see
the example on
page 86
FA:20 Raising the set flow tem-
perature for the transition
from reduced room tem-
perature to standard
room temperature mode
by 20%, see the example
on page 87
Fb:30 Duration for raising the
set flow temperature (see
coding address FA):
60 min, see the example
on page 87
54
Possible change
F8:+10 Temperature limit for can-
to celling reduced mode,
F8:-60 adjustable from +10 to -60
°C
F8:-61 Function disabled
F9:+10 Limit for raising the set
to room temperature to the
F9:-60 value selected for standard
mode adjustable from +10
to -60 °C
FA:0 Raising the set flow tem-
to perature for the transition
FA:50 from reduced room tem-
perature mode to standard
room temperature mode,
adjustable from 0 to 50%
Fb:0 Duration for raising the set
to flow temperature adjusta-
Fb:150 ble from 0 to 150 (corre-
sponds to 0 to 300 min)