Viessmann Vitocal 350-A Installation And Service Instructions Manual page 252

Keyword index
Keyword index
DHW heating 1...................................47
DHW heating 2...................................49
DHW reheating................................187
Diagnosis
■ Heat pump....................................152
■ Heat pump module.......................151
■ Hours run......................................157
■ LON communication module........158
■ Temperature and pressure values156
Dimensions
■ AWH-I.............................................10
■ AWH-O...........................................19
Drain..................................................17
Draining............................................166
Drain valve and air vent valve
■ Overview.......................................165
Drying buildings...............................191
Dual-mode temperature...................182
Duration
■ Operating mode changeover........174
E
EEV controller..................................151
EHE....................................................96
Electrical connection
■ General information..........................8
Electric booster heater.............187, 189
■ Maximum stage............................189
Electric heating..................................95
Enabling the compressor.................180
Energy statement.............................158
EPP....................................................10
Expanded polypropylene...................10
Ext. demand.......................................98
Ext. mixer open..................................98
External blocking........................99, 176
■ Effect............................................177
■ Pumps..........................................177
External demand..............................175
External extension...........................172
252
(cont.)
68, 75, 89, 97
External heat source
■ Dual-mode temperature................182
■ Enable..........................................182
■ For DHW.......................................183
■ Priority..........................................182
External mixer closed.........................99
F
Fault code........................................155
Fault display
■ Scanning.......................................131
Fault index
■ Display system.............................153
Fault manager..........................128, 201
Fault message...................................99
Fault messages................................133
Fill & drain facility...............................29
Fixed temperature............................195
Foundations.......................................19
Frost protection..................................29
Function components.......................208
Function description...........................30
■ DHW heating..................................32
■ Heating circuit.................................31
■ Heating water buffer cylinder..........31
■ Instantaneous heating water
heater.............................................32
■ Power-OFF.....................................34
Fuse
■ Checking.......................................167
H
Heartbeat.........................................202
Heating circuit
■ Time program...............................197
Heating circuit connection..................64
Heating circuits
■ Operating mode changeover........173
Heating curve
■ Level.............................................197
■ Slope............................................197
Heating limit.....................................169