5.5 Finalizing work ....................................................44
5.6 Reading out measured values ...........................44
5.6.1
Status and sub-status ...........................................44
5.7 Changing the settings ........................................45
5.7.1 Parameter descriptions .........................................46
5.7.2 Setting the maximum heat input for central heating
operation ...............................................................48
6 Switching off the boiler ............................................................................49
6.1 Installation shutdown .........................................49
6.2 Antifreeze protection ..........................................49
7 Checking and maintenance .....................................................................50
7.1 General instructions ...........................................50
7.2 Standard inspection and maintenance
operations ...........................................................50
7.2.1 Open the boiler ......................................................50
7.2.2 Checking the hydraulic pressure ...........................51
7.2.3 Checking the expansion vessel .............................51
7.2.4 Checking the ionization current .............................51
7.2.5 Checking the transfer capacity ..............................51
7.2.6 Checking the flue gas discharge and the air
supply ....................................................................52
7.2.7 Checking combustion ............................................52
7.2.8 Checking the automatic air vent ............................52
7.2.9 Checking the siphon ..............................................53
7.2.10 Checking the burner and cleaning the heat
exchanger .............................................................54
7.3 Specific maintenance operations ......................55
7.3.1 Replacing the ionization/ignition electrode ............55
7.3.2 Replacing the 3-way valve ....................................56
7.3.3 Cleaning the plate exchanger ...............................56
7.3.4 Cleaning the domestic water cartridge ..................57
7.3.5 Replacement of the expansion vessel ..................57
7.3.6 Re-assembling the boiler ......................................58
8 Troubleshooting .......................................................................................60
8.1 Error codes ..........................................................60
8.2 Shutdowns and lock-outs ..................................60
8.2.1 Blocking .................................................................60
8.2.2 Lock out .................................................................62
210212 - 7601972-03
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