Installation and operating instruction
Oil condensing boiler WTC-OB 18-B
9 Servicing
83311002 1/2018-03 La
76-132
9.5 Cleaning the heat cell
Observe notes on servicing [ch. 9.1].
When cleaning use only plastic brushes (no metal brushes). Make sure that no
residues can enter any existing condensate lift pump and / or neutralisation device.
Cleaning the combustion chamber
Place burner into service position B [ch. 9.4.2].
Check combustion chamber
1
for soiling and clean if necessary.
1
Refit the burner [ch. 9.4.2].
Cleaning the heat exchanger
Remove insulation.
Remove disc nuts
1
.
Remove service cover
2
.
Remove turbulator
3
.
Check the heat exchanger
4
for contamination and clean, if necessary
Check gasket
5
and replace if necessary.
1
2
3
4