System Version 2 - Viessmann VITODENS 222-F Service Instructions Manual

Outdoor Reset Programming Unit
Installation Examples
Legend
1 Vitodens 222-F
2 Outside temperature sensor
3 Heating circuit with mixing valve M2
(heating circuit 2)
4 Temperature limiter for limiting the maximum
temperature of underfloor heating systems
5 Supply temperature sensor M2
6 Heating circuit pump M2
7 Extension kit for one heating circuit with
mixing valve M2
8 Low loss header
9 Supply temperature sensor, low loss header
34
(continued)
Vitodens 222-F B2TB 19 and 35 Service

System version 2

One heating circuit with mixing valve M2 and a low loss
header
Function/system components
Operation with LPG
System only with one heating
circuit with mixing valve with
extension kit for mixing valve
(without unregulated heating
circuit) with DHW heating
System with DHW
recirculation pump:
DHW recirculation pump
connection at extension AM1,
terminal A2
System with low loss header
Code
Adjust Factory set
condition
82:1 82:0
00:4 00:6
-- 34:0
04:0 04:1