Coding in the delivered condition Possible change
8A:175 Do not adjust
90:128 Time constant for calcu-
lating the adjusted out-
side temperature 21.3 h
90:1
to
90:199
Fast (low values) or slow
(high values) matching of
the flow temperature,
subject to the set value
when the outside tem-
perature changes;
1 step = 10 min
91:0 No external heating pro-
gram changeover via
external extension (only
for weather-compen-
sated control units)
91:1 The external heating pro-
gram changeover affects
the heating circuit without
mixer
91:2 The external heating pro-
gram changeover affects
the heating circuit with
mixer
91:3 The external heating pro-
gram changeover affects
the heating circuit without
mixer and the heating cir-
cuit with mixer
95:0 Without Vitocom 100
communication inter-
face
95:1 With Vitocom 100 com-
munication interface
(automatic recognition)
97:0 With LON communica-
tion module:
The outside tempera-
ture of the sensor con-
nected to the control
unit is only utilised in-
ternally (only for weath-
er-compensated control
units)
97:1 The control unit receives
the outside temperature
from the Vitotronic 050
97:2 The control unit sends
the outside temperature
to the Vitotronic 050
98:1 Viessmann system
number (in conjunction
with monitoring several
systems via
Vitocom 300)
98:1
to
98:5
System number adjusta-
ble from 1 to 5
9b:0 Minimum set boiler
water temperature for
external demand
9b:1
to
9b:127
Minimum set boiler water
temperature adjustable
from 1 to 127 °C
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