Viessmann VITOCAL 242-G Installation And Service Instructions Manual page 7

Index
Index
(cont.)
Room temperature control .......................................................................... 177
Adjusting the heating curve level and slope ................................................. 178
Integral room temperature controller ........................................................... 178
Flow T excess ............................................................................................. 178
Mixer runtime.............................................................................................. 179
Mixer parameters........................................................................................ 179
Screed function .......................................................................................... 180
Mixer active zone/dead zone....................................................................... 181
Natural cooling ........................................................................................... 182
Cooling limit > T room (cooling limit temperature) ........................................ 183
Cooling curve level/slope ............................................................................ 183
Natural cooling with mixer ........................................................................... 184
Active zone/dead zone natural cooling mixer............................................... 185
Cooling mixer runtime ................................................................................. 185
Cooling mixer parameters ........................................................................... 186
Buffer cylinder control settings
Buffer cylinder ............................................................................................ 187
Buffer cylinder program............................................................................... 187
Fixed temperature ...................................................................................... 187
Hysteresis temperature............................................................................... 188
Maximum temperature ................................................................................ 188
Stop optimisation ........................................................................................ 189
Excess reaction .......................................................................................... 189
Components
Sensor resistance curves............................................................................ 191
Fuse ........................................................................................................... 192
Connection and wiring diagrams
Overview of the PCBs and connection options............................................. 193
Main connection area.................................................................................. 194
Safety chain, 400 V units............................................................................. 196
Safety chain, 230 V units............................................................................. 197
Left part of the main PCB ............................................................................ 198
Upper and lower part of the main PCB ......................................................... 200
R.h. part of the main PCB............................................................................ 202
Parts lists
Parts list Vitocal 242-G ............................................................................... 204
Parts list Vitocal 222-G ............................................................................... 210
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