Oil Pressure Adjustment And Vacuum Check - Viessmann Vitoflame 200 Service Instructions Manual

Initial start−up, inspection and maintenance
Further details regarding the individual steps

Oil pressure adjustment and vacuum check

The oil pressure is preset at the factory according to the oil throughput.
Adjust the oil pressure if necessary.
C
Danfoss oil pump, type BFP 31
C
Suntec oil pump, type AL 35
6
1. Isolate mains electricity supply
and safeguard against
unauthorised reconnection.
2. Unscrew drain plug P A from oil
pump.
3. Unscrew drain plug V B from oil
A
pump.
B
This allows the oil to drain from
the oil pump.
4. Insert a pressure gauge (range
0 25 bar) and a vacuum gauge
(range 0 1 bar).
Seal pressure and vacuum gauges
only with copper or aluminium
gaskets or O rings. Never use
sealing tape.
5. Start up burner.
Solenoid valve opens.
6. Read off oil and vacuum pressures
of the pump on the relevant
A
gauges (vacuum should be max.
B
0.35 bar given a head of 3 m
between oil pump and bottom of
tank).
Where vacuum measures higher
than 0.35 bar, check filter for
cleanliness or pipe run.
(cont.)