17
Cleaning the sight glass in the boiler door
Check the gaskets and hose connection
for leaks.
Checking the mixer for ease of operation and tightness
1. Remove the motorised lever from the
mixer handle.
2. Check the mixer for ease of opera-
tion.
3. Check the mixer for leaks. Replace
the O-ring gaskets if the mixer is leak-
ing.
4. Snap the motorised lever into place.
Checking the Vitoair draught stabiliser (if installed)
Release the latch on the control disc. The control disc must swing freely during
burner operation.
Adjusting the burner
Burner service instructions or
separate documentation from the
burner manufacturer.
Adjust the maximum oil or gas through-
put of the burner to the rated boiler heat-
ing output.
Rated
heating
output
Pressure drop on the
hot gas side
kW Pa mbar
150 60 0.6
200 120 1.2
250 130 1.3
310 230 2.3
400 250 2.5
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5692 701 GB
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