Viessmann FB2B Installation And Service Instructions Manual page 82

Code 2
General
(cont.)
Coding in the delivered condition
79:1 With LON communication
module: Control unit is
fault manager (only for
weather-compensated
control units)
7b:1 With LON communication
module: The control unit
transmits the time (only
for weather-compensa-
ted control units)
7F:1 Detached house (only for
weather-compensated
control units)
80:6 A fault message is dis-
played, providing a fault
is active for at least 30 s
81:1 Automatic summer/win-
ter time changeover
82:0 Operation with natural
gas
86:0 Do not adjust
87:0 Do not adjust
88:0 Temperature displayed in
°C (Celsius)
8A:175 Do not adjust
8F:0 All control elements
active
82
Possible change
79:0 Control unit is not fault
manager
7b:0 Does not transmit time
7F:0 Apartment building
Separate adjustment of
holiday program and time
program for DHW heating,
as option
80:0 Immediate fault message
80:2 Minimum fault duration
to until fault message occurs,
80:199 adjustable from 10 s to
995 s; 1 step ≙ 5 s
81:0 Manual summer/winter
time changeover
81:2 Use of the radio clock
receiver (automatic recog-
nition)
81:3 With LON communication
module: The control unit
receives the time
82:1 Operation with LPG (only
adjustable if coding
address 11:9 has been
set)
88:1 Temperature displayed in
°F (Fahrenheit)
8F:1 All control elements locked
out
8F:2 Only standard settings can
be controlled