Viessmann Vitodens 300 Service Instructions Manual page 40

Coding
Code 1
(cont.)
Coding in Function mode
the as
delivered
condition
Address:
value
Gas type
1E:0 Natural gas operation,
defaulted by the boiler
coding card
Venting/filling
2F:0 Venting program dis-
abled
User no.
77:1 LON user number
DHW priority A1
A2:2 DHW cylinder priority
applicable to heating
circuit pump and mixer
DHW priority M2
A2:2 DHW cylinder priority
applicable to heating
circuit pump and mixer
Summer econ. A1
A5:5 * 1 With heating circuit
pump logic function
*1
Only for weather-compensated control units.
40
Coding Possible change
change
Address:
value
1E:1 LPG operation, defaulted
by the boiler coding card
2F:1 Venting program enabled
2F:2 Filling program enabled
77:2 LON user number, adjus-
to table from 1 to 99:
77:99 1 - 4 = boiler
5 = cascade
10 - ... = Vitotronic 050
99 = Vitocom
Note
Allocate each number
only once.
A2:0 Without cylinder priority
for heating circuit pump
A2:0 Without DHW cylinder
priority applicable to
heating circuit pump and
mixer
A2:1 DHW cylinder priority
only applicable to mixer
A2:3 Modulating DHW cylinder
to priority
A2:15
A5:0 Without heating circuit
pump logic function