Viessmann FB2B Installation And Service Instructions Manual page 53

Further details regarding the individual steps
System version 2
One heating circuit with mixer M2 and a low loss header
wQ
wP
1 Vitodens 242-F
2 Outside temperature sensor
3 Heating circuit with mixer M2
4 Temperature limiter for limiting the
maximum temperature of underfloor
heating systems
5 Flow temperature sensor M2
6 Heating circuit pump M2
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:
Commissioning, inspection, maintenance
4
5
6
2
1
7
M
9
8
7 Extension kit for one heating circuit
with mixer M2
8 Low loss header
9 Flow temperature sensor, low loss
header
wP Solar collectors
wQ Collector temperature sensor
(cont.)
3
Code
Adjust Delivered con-
dition
82:1 82:0
00:4 00:6
53