Cleaning The Sight Glass In The Boiler Door; Checking The Mixer For Ease Of Operation And Tightness; Adjusting The Burner - Viessmann VITOPLEX 100 Service Instructions Manual

Further details regarding the individual steps
The total hardness of the feed and top-
up water must not exceed a sum of all
alkaline earths of ≤ 0.02 mol/m

Cleaning the sight glass in the boiler door

Note
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.

Adjusting the burner

For burner adjustment, see the
separate burner documentation.
Adjust the maximum oil or gas through-
put of the burner to the rated boiler heat-
ing output.
Commissioning, inspection, maintenance
The pH value should be between 9 and
10.5.
3
.
3. Check the mixer for leaks. Replace
the O-ring gaskets if the mixer is leak-
ing.
4. Snap the motorised lever into place.
Rated heating
output
kW
780
950
1120
1350
1700
2000
(cont.)
Pressure drop on
the hot gas side
Pa mbar
350 3.5
500 5.0
300 3.0
400 4.0
450 4.5
600 6.0
17