Viessmann FB2A Installation And Service Instructions For Contractors page 64

Code 1
Boiler
(cont.)
Coding in the delivered condition
Service status
24:0 No "Service" display
Filling/venting
2F:0 Venting program/fill pro-
gram disabled
Ext. pump blocking
32:0 Influence of the signal
"External blocking" on cir-
culation pumps: All
pumps in control function
Note
Generally, the burner will be blocked when signal "External blocking" is enabled.
Value Internal circu-
address lation pump
32: ...
0 Control funct.
1 Control funct.
2 Control funct.
3 Control funct.
4 Control funct.
5 Control funct.
6 Control funct.
7 Control funct.
8 OFF
9 OFF
10 OFF
11 OFF
12 OFF
13 OFF
14 OFF
15 OFF
64
Possible change
24:1
2F:1
2F:2
32:1
to
32:15
Heating circuit
pump
Heating circuit
without mixer
Control funct.
Control funct.
Control funct.
Control funct.
OFF
OFF
OFF
OFF
Control funct.
Control funct.
Control funct.
Control funct.
OFF
OFF
OFF
OFF
"Service" display (the
address is automatically
set and must be manually
reset after a service has
been carried out)
Venting program enabled
Fill program enabled
Influence of the signal
"External blocking" on cir-
culation pumps: See the
following table
Heating circuit
pump
Heating circuit
with mixer
Control funct.
Control funct.
OFF
OFF
Control funct.
Control funct.
OFF
OFF
Control funct.
Control funct.
OFF
OFF
Control funct.
Control funct.
OFF
OFF
Circulation
pump for cylin-
der heating
Control funct.
OFF
Control funct.
OFF
Control funct.
OFF
Control funct.
OFF
Control funct.
OFF
Control funct.
OFF
Control funct.
OFF
Control funct.
OFF