
154394 | A001
Contents
Warnings.......................................................1
Product description..........................................2
2.1
Internal components ...............................2
Description of internal components ............3
2.2.1
Supply and extract air
fans ........................................3
Pressure sensor fans/
filters.......................................3
Supply and extract air
filters.......................................3
Heat exchanger .........................3
Switch module...........................3
Temperature sensor....................3
Water heating battery .................3
Electrical heater .........................3
Free cooling description ...............4
Section defrosting ......................5
Internal components electrical
connection box ......................................6
Maintenance ..................................................7
3.1
Important .............................................7
Maintenance intervals .............................7
Maintenance instruction ..........................8
3.3.1
Changing supply/extract air
filter ........................................8
Checking the heat
exchanger ................................8
Checking the fans.......................9
Checking the hot water
heating battery ..........................9
Checking the electrical heating
battery ....................................9
Cleaning the extract louvres
and inlet diffusers.......................9
Checking the outdoor air
intake ......................................9
Checking the duct system ............9
Changing the internal
battery .................................. 10
Troubleshooting............................................ 11
Service ....................................................... 12