Heat accumulator .......................................................................................................57
Domestic hot water .....................................................................................................58
Differential controller ..................................................................................................64
Controller installation ...........................................................................................................67
Wall installation ...........................................................................................................67
Panel installation ........................................................................................................68
Installation onto boiler ...............................................................................................69
Room unit DD2+ .........................................................................................................72
Burner connection ......................................................................................................75
Controller malfunction..........................................................................................................77
Technical data......................................................................................................................78
Declaration of conformity .....................................................................................................79
Warranty ..............................................................................................................................80
Hydraulic schemes ............................................................................................................399
7