Checking The Heat Exchanger For Contamination - Viessmann VITOLADENS 300-W Installation And Service Instructions Manual

Commissioning, inspection, maintenance
Further details regarding the individual steps

Checking the heat exchanger for contamination

A
1. Pull plugs aCA and a-Ö from the fan.
Remove the cables from the cable
clip on the left side of the boiler.
2. Insert burner retainer A (part of the
cleaning set) into the left side of the
boiler.
40
B
(cont.)
3. Undo four nuts on burner B and
remove the burner.
4. Hook burner B into burner retainer
A or position on a suitable surface.
5. Check for heat exchanger contami-
nation. If contaminated, continue with
the following chapter.