Checking The 0-Point Setting Of The Blast Tube Connection - Viessmann Vitoflame 100 Service Instructions Manual

Further details regarding the individual steps
Readjusting stage 1

Checking the 0-point setting of the blast tube connection

This adjustment is only required if optimum combustion characteristics are not ach-
ieved with the standard values for burner settings (see chapter of the same title).
Commissioning, inspection, maintenance
1. Change service switch G to
position II (automatic mode) and
close the cover flap.
2. Adjust the burner at service switch
G to stage 1.
3. Remove the cover from the servomo-
tor.
4. Change the air volume by turning the
adjusting screw at switch cam ST1
(see Fig. in chapter "Checking the
setting of the air damper servomo-
tor"):
■ Turn clockwise → more air
■ Turn anti-clockwise → less air
Note
Adjust the switch cam ST1 little by lit-
tle (fine adjustment). The selected
value of switch cam BV must not be
lower than that of switch cam ST1
and must not be greater than that of
switch cam ST2.
After each adjustment of
switch cam ST1, briefly turn the
burner to stage 2 and then back to
stage 1.
5. Fit the cover over the servomotor.
(cont.)
11