Viessmann FB2B Installation And Service Instructions Manual page 55

Further details regarding the individual steps
Note
The flow rate of the heating circuit with-
out mixer must be at least 30 % greater
than the flow rate of the heating circuit
with mixer.
Function/system components
Operation with LPG
System only with one heating circuit with mixer with
extension kit for mixer with DHW heating
System with DHW circulation pump:
DHW circulation pump connection at extension AM1,
terminal A2
Commissioning, inspection, maintenance
(cont.)
Adjust Delivered con-
82:1
00:4
—
Code
dition
82:0
00:6
34:0
55