Bulex Thema Condens AS 48-A, Руководство пользователя, Страница: 52 / 199

MAKSİCONDENSE 48-65
Notes
01/2018 46 Training 0020260859_00
3.1.4.8 New! Air pressure switch (pressure switch) for the supply air network
Supply air network/pressure switch
Detailed view of the air intake pipe/test point
As a new feature, an air pressure switch is being added to the 48
–65 kW product supply air network.
The air pressure switch ensures the supply of sufficient combustion air. At the same time, the con-
nected length of the flue gas system (resistance) is correlated to the fan output (ARA). Thanks to
this correlation, blocks in the flue pipework or overly long flue pipe works are detected. If the flue gas
system resistance is too high, the unit is switched off with an operating block. Possible status and
fault messages are:
S.33; F.33.
The unit always starts with the last measured speed value of the flue system automatic pipe length
adjustment (ARA); should this value not be sufficient, a new ARA is initiated and carried out. If this
adjustment is not sufficient, the flue pressure switch does not switch
F.33 ; now the function of the
pressure switch/fan or the condition of the flue system must be checked.
Air pressure switch
Test points/air pressure switch
Test points/air pressure switch