Viessmann VITODENS 100-W Manual page 61

Routine Servicing Instructions
Start-up the boiler
1. Open gas shut-off valve and switch
on mains voltage.
Checking all gas equipment for soundness at operating
pressure
Gefahr
Escaping gas leads to a risk of
explosion.
Check gas equipment for
soundness.
Final checks
1. Check that the flue terminal in is
good condition and clear of any
obstructions.
Service Instructions
(Fortsetzung)
2. Check the operation of the appli-
ance.
2. Return all appliance and external
controls (if fitted) to their original
settings.
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