6
Commissioning ........................................................................................42
6.1
Control panel .......................................................42
6.2
Check points before commissioning ................43
6.2.1
Preparing the boiler for commissioning .................43
6.2.2
Hydraulic circuit .....................................................43
6.2.3
Electrical connections ...........................................43
6.3
Commissioning the boiler ..................................43
6.4
Gas settings ........................................................45
6.4.1
Gas circuit .............................................................45
6.4.2
Checking combustion ............................................45
6.4.3
Setting the air/gas ratio .........................................48
6.5
Finalizing work ....................................................49
6.6
Parameter descriptions ......................................50
7
Switching off the boiler ............................................................................52
7.1
Installation shutdown .........................................52
7.2
Antifreeze protection ..........................................52
8
Checking and maintenance .....................................................................53
8.1
General instructions ...........................................53
8.2
Standard inspection and maintenance
operations ...........................................................53
8.2.1
Open the boiler ......................................................53
8.2.2
Checking the hydraulic pressure ...........................54
8.2.3
Checking the expansion vessel .............................54
8.2.4
Checking the ionization current .............................54
8.2.5
Checking the DHW transfer capacity ....................55
8.2.6
Checking the flue gas discharge and the air
supply ....................................................................55
8.2.7
Checking combustion ............................................55
8.2.8
Checking the automatic air vent ............................55
8.2.9
Checking the condensate trap ..............................56
8.2.10
Checking the burner and cleaning the heat
exchanger .............................................................57
8.3
Specific maintenance operations ......................58
8.3.1
Replacing the ionization/ignition electrode ............58
8.3.2
Replacing the 3-way valve ....................................59
8.3.3
Cleaning the plate heat exchanger .......................59
8.3.4
Cleaning the domestic water cartridge ..................60
8.3.5
Replacement of the expansion vessel ..................60
8.3.6
Re-assembling the boiler ......................................61
02092014 - 7619497-02
3