Adjusting The Oil Pressure And Checking The Vacuum - Viessmann VITOFLAME 100 Service Instructions Manual

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

Adjusting the oil pressure and checking the vacuum

The oil pressure is preset at the factory according to the oil throughput.
Readjust the oil pressure, if required.
Danfoss oil pump, type BFP 52
Suntec oil pump, type AT 2 55
8
1. Switch OFF the mains isolator and
A
2. Unscrew plug "P" A from the oil
B
C
3. Unscrew plug "V" B from the oil
D
4. Insert a pressure gauge (range
A
5. Start up the burner.
B
C
6. Read off the oil and vacuum
D
(cont.)
safeguard against unauthorised
reconnection.
pump.
pump.
This allows the oil to drain from
the oil pump.
0 40 bar) and a vacuum gauge
(range 0 1 bar).
Seal the pressure and vacuum
gauges only with copper or
aluminium gaskets or O rings.
Never use tape to seal these
joints.
The solenoid valve opens.
pressures of the pump on the
relevant gauge (vacuum should be
max. 0.35 bar given a height
differential of 3 m between the oil
pump and the bottom of the tank).
Where vacuum measures higher
than 0.35 bar, check the filter for
contamination or check the pipe
run.