Viessmann Vitodens 222-F Installation And Service Instructions For Contractors page 5

Index
(cont.)
9. Function description
10. Connection and wiring dia-
grams
11. Commissioning/service
reports
12. Specification
13. Certificates
14. Keyword index
Putting the control unit into the service position ................................. 96
■
Draining the boiler on the heating water side ..................................... 96
■
Checking the outside temperature sensor .......................................... 97
■
Checking the boiler water temperature sensor, cylinder temperature
■
sensor or flow temperature sensor of low loss header ....................... 98
Checking the flue gas temperature sensor ......................................... 99
■
Checking the temperature limiter ........................................................100
■
Checking the fuse ............................................................................... 101
■
Mixer extension kit .............................................................................. 101
■
Checking the Vitotronic 200-H (accessories) ......................................102
■
Control unit ............................................................................................ 103
Weather-compensated heating mode .................................................103
■
Constant temperature heating mode .................................................. 103
■
DHW heating ...................................................................................... 103
■
Boosting DHW heating ....................................................................... 103
■
Internal extensions .................................................................................104
Internal H1 extension ..........................................................................104
■
Internal H2 extension ..........................................................................105
■
External extensions (accessories) ......................................................... 106
AM1 extension .................................................................................... 106
■
EA1 extension .................................................................................... 107
■
Control functions ....................................................................................108
External operating program changeover ............................................ 108
■
External blocking ................................................................................ 109
■
External demand ................................................................................ 109
■
Venting program ................................................................................. 109
■
Fill program .........................................................................................109
■
Screed drying ..................................................................................... 110
■
Raising the reduced room temperature .............................................. 111
■
Reducing the heat-up time ................................................................. 112
■
Assigning heating circuits to the remote control .................................... 113
Electronic combustion control unit ......................................................... 113
Connection and wiring diagram
Connection and wiring diagram
................................................................................................................ 117
................................................................................................................ 118
Declaration of Conformity ...................................................................... 120
................................................................................................................121
internal connections ......................... 115
-
external connections ........................ 116
-
Index
5