Calling Up Coding Level 2; General - Viessmann FB2A Installation And Service Instructions For Contractors

Code 2

Calling up coding level 2

Note
■ In coding level 2, all codes are acces-
sible, including the codes from coding
level 1.
The following lists only those codes
not accessible in coding level 1.
■ Codes that have no function due to the
heating system equipment level or the
setting of other codes are not dis-
played.
■ Heating systems with one heating cir-
cuit without mixer and one heating cir-
cuit with mixer:
The heating circuit without mixer is
designated with "Heating circuit 1"
and the heating circuit with mixer with
"Heating circuit 2".
If the heating circuits were given indi-
vidual designations (see page 28), the
selected designation and "HC1" or
"HC2" appears instead of the above.
1. Press OK and
approx. 4 s.
2. Press OK and
approx. 4 s.

General

Coding
Coding in the delivered condition
No access to the coding
11:≠9
addresses for the param-
eters of the combustion
controller
52:0 Without flow temperature
sensor for low loss
header
54:3 Never adjust
72
simultaneously for
simultaneously for
3. "Coding level 2"
4. Select group of required coding
address:
■ "General"
■ "Boiler"
■ "DHW"
■ "Solar"
■ "Heating circuit 1/heating circuit
2"
5. Select coding address.
6. Select value according to the follow-
ing tables and confirm with "OK".
7. If you want to reset all codes to the
delivered condition:
Select "Standard setting" in "Cod-
ing level 2".
Note
The codes from coding level 1 are
also reset.
Possible change
11:9 Access open to the coding
addresses for the parame-
ters of the combustion con-
troller
52:1 With flow temperature sen-
sor for low loss header
(automatic recognition)