25
A
B
2.
1.
3x
Fig. 15
A
Burner aperture
B
Flue gas inspection port
1.
Remove 3 split pins.
2.
Open inspection cover and remove.
3.
Clean the combustion chamber and heating surfa-
ces.
■
For normal cleaning, flush the heating surfaces
thoroughly with a jet of water.
■
For stubborn residues, surface stains or soot
deposits, cleaning agents can be used.
For this, observe the following information.
Note
–
Only use solvent-free cleaning agents. Ensure
that no cleaning agent gets between the boiler
body and the thermal insulation.
–
Remove soot deposits with alkaline cleaning
agents with surfactant additive.
–
Remove coatings and surface discolouration
(yellow-brown) with slightly acidic, chloride-free
cleaning agents based on phosphoric acid.
4.
Remove loosened deposits from the boiler. Flush
the heating surfaces thoroughly with a jet of water.
Cleaning agent manufacturer's instructions
5. Assemble in reverse order:
Check gasket for possible damage and replace if
required. Before installation, wet the gasket with
suitable lubricating paste (e.g. chloride-free lubri-
cating paste, part no. 7568157).
Position the inspection cover. Insert the split pins.
Danger
Leaks can result in poisoning through escap-
ing flue gas.
Check correct seating of seal ring and
inspection cover.
Cleaning the condensate drain system
The condensate drain system comprises
■
Condensate drain
■
Trap
■
Neutralising system
■
All hoses or pipes running between these parts
Note
Clean the inside of the condensate drain system at
least annually.
Commissioning, inspection, maintenance
Cleaning the combustion chamber and heating…
(cont.)
5839829
