Adjusting The Air Volume (Static Burner Pressure) - Viessmann Vitoladens 300-W Service Instructions For Contractors

Further details regarding the individual steps
3. Press K and d simultaneously for
approx. 2 s.
"Relay test" is shown in the dis-
play.
After approx. 4 s the display shows
"Burner st 1 ON".
4. Where vacuum measures higher
than 0.35 bar, check the filter for con-
tamination and check the pipe route.
5. If required, adjust the oil pressure for
stage 1 at pressure adjusting screw
C of the oil pump (for standard val-
ues, see page 15).

Adjusting the air volume (static burner pressure)

A
1. Start the boiler.
2. Remove plug A from the test port.
3. Connect the U-shaped pressure
gauge to test port A.
4. Press K and F simultaneously
until "Speed stage 1" and a value
between 1 and 255 are displayed.
Commissioning, inspection, maintenance
(cont.)
6. Check the actual emission values
after adjusting the oil pressure.
7. Select burner stage 2 with a.
"Burner st 1 + 2 ON" is shown on the
display.
8. If required, adjust the oil pressure for
stage 2 at pressure adjusting screw
D of the oil pump.
9. Check the actual emission values
after adjusting the oil pressure.
10. After testing, press d.
5. Change the value with a/b until
the static burner pressure displayed
by the U-shaped pressure gauge and
the CO flue gas content correspond
2
to the values in the table on
page 15.
6. Confirm the set value with d.
Note
The control unit changes automati-
cally to burner stage 2. The display
shows "Speed stage 1 + 2" and a
value between 1 and 255.
7. Repeat steps 4 and 5 for burner stage
2.
8. Check the set values.
17