Viessmann VITODENS 333, Service Instructions Manual

Page: 33 / 132

Boiler control
unit Vitotronic 050 Vitotronic 050 Vitocom
Sent time via LON
Code 7b: 1 Time received via
LON
Set code 81: 3
Time received via
LON
Set code 81: 3
Time received
via LON
Transmit outside
temperature via
LON
Set code 97: 2
Outside tempera-
ture is received via
LON
Set code 97: 1
Outside tempera-
ture is received via
LON
Set code 97: 1
—
Implementing a user check (in conjunction with the LON sys-
tem)
The communication with the system devices connected to the fault manager is
tested with a user check.
Preconditions:
& The control unit must be encoded as fault manager (code 79:1).
& The LON user number must be encoded in all control units (see page 32).
& The fault manager LON user list must be up to date (see page 32).
A
Consecutive list number
B
User number
1. Press
L
and
d
simultaneously
for approx. 2 seconds. User check
initiated.
2. Select the required user with
a
and
b
.
3. Activate checking with
d
.
Check flashes until its completion.
The display and all key illumina-
tions of the selected user flash for
approx. 60 seconds.
&
Check OK flashes during com-
munication between both
devices.
&
Check not OK flashes if there is
no communication between both
devices. Check LON connection.
4. For checking further users, proceed
as for items 2 and 3.
Further details regarding the individual steps
(cont.)
33
Initial start-up, inspection, maintenance
56
92
548
GB