Viessmann VITODENS 242-F Installation And Service Instructions Manual page 74

Commissioning, inspection, maintenance
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 to restrict the
maximum temperature of underfloor
heating systems
5 Flow temperature sensor M2
6 Heating circuit pump M2
Function/system components
Operation with LPG
System with only one heating circuit with mixer, with
extension kit for mixer with DHW heating
System with DHW circulation pump:
DHW circulation pump connected at internal exten-
sion H1 or H2
System with low loss header
74
4
5
6
2
1
7
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
M
Code
Adjust
82:1
00:4
—
04:0
Group
"General"
"General"
—
"Boiler"