Viessmann VITODENS 300 Service Instructions Manual page 46

Coding
Code 2
(cont.)
Coding in the delivered condition
Boiler/burner
34:0 Influence of the signal
"External demand" on
the circulation pumps:
All pumps in control
function
Coding Internal
circulation
pump
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
46
Possible change
34:1
to
34:23
Heating cir- Heating cir-
cuit pump cuit pump
Heating cir- Heating cir-
cuit without cuit with
mixer mixer
Control Control funct. Control funct.
funct.
Control Control funct. OFF
funct.
Control OFF
funct.
Control OFF
funct.
OFF Control funct. Control funct.
OFF Control funct. OFF
OFF OFF
OFF OFF
Control Control funct. Control funct.
funct.
Control Control funct. OFF
funct.
Control OFF
funct.
Control OFF
funct.
OFF Control funct. Control funct.
OFF Control funct. OFF
OFF OFF
OFF OFF
Influence of the signal
"External demand" on the
circulation pumps: see
the following table
Cylinder primary pump
Control funct.
OFF
Control funct.
OFF
Control funct.
OFF
Control funct.
OFF