Wet Cleaning (Chemical Cleaning) - Buderus Logano GC 124 II Installation And Service Instructions Manual

15
Boiler inspection and maintenance
5
4
3
Fig. 34 Front view GC124 II
[1] Flame roll-out switch
[2] Flame roll-out switch cable
[3] Gas valve
[4] Gas supply pipe
[5] Boiler temperature controller
[6] Ignition module
[7] Igniter cable
[8] Gas valve cable connector
[9] Pilot line
[10] Igniter cable
1
Fig. 35 Removing burner
[1] Screw nuts (two)
[2] Screws on gas manifold on top of gas valve (four)
22
6
7
8
9
10
1
2
6 720 804 440-45.1T
2
6 720 804 440-46.1T
▶ Remove four (4) screws from gas manifold on top of gas valve.
▶ Remove two (2) screw nuts on burner tray and take out the tray.
Fig. 36 Remove top cover
▶ Remove 4 screws on sides of the top cover and lift off.
▶ Remove top boiler insulation.
▶ Unscrew cleaning cover from the venting manifold.
▶ Cover control with foil to prevent entry of metal dust into the control.
▶ Use boiler brush to clean out flue gas passages.
▶ Clean combustion chamber and bottom insulation.
▶ Replace cleaning cover, install screws, and replace insulation.

15.5.2 Wet cleaning (chemical cleaning)

For wet cleaning use a suitable cleaning agent depending on the degree
of build-up of dirt (soot or scale).
Use the same procedure as described for cleaning with brushes
( chapter 15.5.1, page 21).
Observe the directions for use of the cleaning agent. In
some case you may need use a different procedure from
that described here.
▶ Cover control with foil to prevent entry of spray into the control.
▶ Ventilate boiler room well during cleaning.
▶ Spray flue gas vents evenly with the cleaning agent.
▶ Replace and install the burner in reverse order of removal and
disassembly.
▶ Place the heating system in operation.
▶ Heat the boiler water to a temperature of at least 122°F.
▶ Take the boiler out of operation.
▶ Allow boiler to cool.
▶ Remove burner.
▶ Brush out flue gas passages.
▶ Clean combustion chamber and bottom insulation.
▶ Continue to ventilate boiler room well.
▶ Install burner.
▶ Reattach boiler jacket.
Logano GC 124 II – 6 720 804 440 (2012/11)
6 720 804 440-47.1T