38
We reserve the right to make any changes due to technical modifications.
Commissioning and maintenance instructions Logano GE434 Gas-fired special boiler • Issue 02/2003
Buderus Heiztechnik GmbH • http://www.heiztechnik.buderus.de
Heating system inspection and maintenance
8
8.3.2 Wet-cleaning the boiler
When wet-cleaning, use a cleaning agent appropriate to
the level of contamination (soot level and encrusted
residues).
!
Ensure adequate ventilation of the boiler room.
!
Start-up the heating system.
!
Heat up the boiler water temperature to at
approx. 50 °C.
!
Close the gas shut-off valve in the gas supply pipe.
!
Disconnect your heating system from the mains
electricity supply.
!
Remove the boiler hoods, thermal insulation and
clean-out cover of the flue gas header.
!
Remove the gas burner, see Chapter 8.3.1
"Cleaning the boiler with cleaning brushes", page 36.
!
Brush out severely encrusted hot gas flues, see
Chapter 8.3.1 "Cleaning the boiler with cleaning
brushes", page 36.
!
Cover the control device with foil. Spray must not
enter the control device.
!
Place cleaning rags onto the bottom plate to absorb
any spray agent run-off.
!
Evenly spray hot gas flues from the top and the sides
with cleaning agent Fig. 19 and Fig. 20).
!
Only spray cleaning agent into the hot gas flues.
Fig. 19
Wet-cleaning the boiler
Fig. 20
Wet-cleaning the boiler
PLEASE NOTE
!
For wet-cleaning (chemical cleaning),
observe the operating instructions of
the relevant cleaning equipment and
the cleaning agent.
It may be necessary to vary the wet-
cleaning process from that described
here.