Viessmann VITODENS 343-F WS4A Installation And Service Instructions Manual page 49

Further details regarding the individual steps
! Outside temperature sensor
A Solar collectors
B Collector temperature sensor
C DHW circulation pump
D DHW
Required coding
Operation with natural gas (delivered condition)
or
Operation with LPG
System version 2
One heating circuit with mixer M2 and a low loss header
Commissioning, inspection, maintenance
(cont.)
E Cold water
F Heating circuit
G Vitodens
H Vitotrol 200 or 300
Address
82:0
82:1
49