Viessmann Vitodens 222-F Installation And Service Instructions For Contractors page 47

Matching the control unit to the heating system
System version 2
One heating circuit with mixer M2 and low loss header
2
1
Fig. 41
Vitodens 222-F
1
Outside temperature sensor
2
Heating circuit with mixer M2 (heating circuit 2)
3
Temperature limiter to restrict the maximum tem-
4
perature of underfloor heating systems
Function/system components
Operation with LPG
System with only one heating circuit with mixer and DHW heating
System with DHW circulation pump:
DHW circulation pump connected at internal H1 or H2 extension
System with low loss header
3
4
5
6
7 M
9
8
Commissioning, inspection, maintenance
(cont.)
Flow temperature sensor M2
5
Heating circuit pump M2
6
Extension kit, mixer M2
7
Low loss header
8
Flow temperature sensor, low loss header
9
Settings
Code
Group
82:1 "General"
00:4 "General"
—
04:0 "Boiler"
—
47