Install Instructions

8
Heating system inspection and maintenance
Logano G234X - Technical specifications are subject to change without prior notice.
40
Cleaning the boiler:
B Remove the boiler cover and heat insulation, check for
damage.
B Unscrew cleaning cover from the draft diverter.
B Cover control unit with foil to prevent entry of metal
dust into the control unit.
B Use boiler brush to clean out flue gas passages.
B Clean combustion chamber and bottom panel.
B Screw cleaning cover into place and replace insulation.
B Install boiler cover.
Fig. 46 Cleaning the hot flue passages
1 Cleaning brushes
2 Thermal insulation
3 Foil cover of the control unit
8.5.2 Wet cleaning (chemical cleaning)
For wet cleaning use a cleaning agent appropriate for the
degree of soiling (soot or scale).
Follow the same procedure as for cleaning with brushes
(Æ page 39).
B Remove the boiler cover and heat insulation, check for
damage.
B Unscrew cleaning cover from the draft diverter.
B Cover the control panel with foil to prevent spray
getting into the control panel.
B Ventilate boiler room well.
B Spray cleaning agent evenly into the heat exchanger
heater passages.
B Carry out the burner assembly and installation in
reverse order to their removal and disassembly
(Æ page 39).
Fig. 47 Wet-cleaning the boiler
B Start up the heating system.
B Heat up the boiler to a boiler water temperature of at
least 122 °F (55 °C).
B Shut down the heating system.
B Allow boiler to cool.
B Remove the burner (Æ page 39).
B Brush out the heat exchanger heater.
B Clean combustion chamber and bottom panel.
B Ventilate boiler room well again.
B Install or clean the burner (Æ page 41).
B Screw cleaning cover into place and replace insulation.
B Install boiler cover.
Observe the operating instructions of the
cleaning agent. Under some circumstances
you may have to proceed differently from the
method described here.