Viessmann VITODENS 300 Service Instructions Manual page 50

Coding
Code 2
(cont.)
Coding in the delivered condition
7b:1 * 1 Send time via LON
7F:1 * 1 Detached house
80:1 With a 5 second time
delay for fault message;
message will be issued,
if a fault persists for at
least 5 seconds
81:1 Automatic summer/win-
ter time changeover
82:0 Operation with natural
gas
88 :0 Temperature displayed
in Celsius
8A:175 Never adjust
90:128 Time constant for calcu-
lating the adjusted out-
side temperature
21.3 hours
*1
Only for weather-compensated control units.
50
Possible change
7b:0 Do not send time via LON
7F:0 Apartment block
Separate adjustment for
holiday program and time
program for DHW heat-
ing, as option
80:0 Without time delay
80:2 Time delay adjustable
to from 10 to 995; 1 step =
80:199 5 s
81:0 Manual summer/winter
time changeover
81:2 The radio clock module
will be recognised auto-
matically
81:3 Accept time via LON
82:1 Operation with LPG (only
adjustable if coding ad-
dress 11:9 has been set;
see page 91)
88 :1 Temperature display in
Fahrenheit
90:0 Fast (low values) or slow
to (high values) matching of
90:199 the flow temperature,
subject to the set value
when the outside tem-
perature changes;
1 step = 10 min.