Adjusting The Oil Pressure And Checking The Vacuum - Viessmann VITOLADENS 300-C Service Instructions Manual

Commissioning, inspection, maintenance
Further details regarding the individual steps

Adjusting the oil pressure and checking the vacuum

Oil pump; make: Danfoss,
type BFP 52
1. Insert the pressure gauge (range
0 - 25 bar) into test port "P"D
and the vacuum gauge (range 0 -
1 bar) into test port "V"C.
Note
Seal the pressure and vacuum
gauges only with copper or alumi-
nium gaskets or with O-rings.
Never use tape to seal these
joints.
2. Start the boiler.
16
(cont.)
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
contamination or check the pipe
route.
5. If required, adjust the oil pressure
for stage 1 at pressure adjusting
screw B of the oil pump (for
standard values, see page 15).
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 A of the oil pump.
9. Check the actual emission values
after adjusting the oil pressure.
10. After testing, press d.