03/2011 - Art. Nr. 4200 1016 4000C
22
Start up
Adjusting burner output
Oil pressure regulation
Operating check
Burner start
Before starting the burner, draw oil in
using a hand pump until the filter is
completely filled.
Then start the burner by switching on the
boiler regulator. Open the bleed screw
on the oil filter to allow the oil line to
bleed fully during the preventilation
phase. The negative pressure must not
fall below 0.4 bar. Close the bleed screw
when the filter is completely filled with oil
and oil is flowing out without bubbles.
Risk of air blast!
Continuously check CO, CO
2
and
soot emissions when adjusting the
output of the burner. Optimise com-
bustion values in the event of CO for-
mation. CO must not exceed 50 ppm.
Burner output adjustment
• Use the pressure regulator to adjust
the oil pressure in accordance with the
burner output desired. Monitor the
combustion values continuously as
you do so (CO, CO
2
, soot test). Adjust
the airflow gradually if necessary.
Optimising combustion values
Optimum combustion values can be
achieved by adjusting the position of the
baffle plate (dimension
Y
) if necessary.
Doing this can have an effect on starting
characteristics, pulsation and
combustion values.
Any reduction in scale value
Y
increases
the CO
2
value. However, starting
characteristics become harsher.
Compensate for the change in airflow if
necessary by adjusting the air flap
position.
N.B.: Observe the minimum required
flue gas temperature specified by the
boiler manufacturer and the
requirements demanded of flue gas
ducts for avoiding condensation.
Operating check
Flame monitoring must be checked for
safety as part of initial commissioning
and also after servicing or if the system
has been out of operation for any
significant period of time.
- Starting attempt with flame monitor
unlit: the automatic combustion
control unit must switch to malfunction
at the end of the safety time
- Start with flame monitor lit: the
automatic combustion control unit
must switch to malfunction after 10
seconds of preventilation
- Normal start-up: flame monitor goes
out when burner in operation: the
automatic combustion control unit
must switch to malfunction after the
restart and end of the safety time
1
Suction intake connection
2
Return connection
3
Pressure connection
4
Oil pressure gauge connection
5
Negative pressure gauge
connection
6
Oil pressure regulator
10
Solenoid valve electrical
connection
Y1 Fuel-oil
solenoid
valve
Oil pressure regulation
The oil pressure, and therefore burner
output, is adjusted using oil pressure
regulator
6
in the pump.
Turn to
- right: to increase pressure
- left: to reduce pressure
Connect a pressure gauge at point
4
(with R1/8" thread).
Checking negative pressure
The vacuum meter for checking
negative pressure must be connected to
point
5
, R1/8". Maximum permissible
negative pressure is 0.4 bar. At higher
negative pressures, the fuel oil gasifies,
which causes scraping noises in the
pump and ultimately leads to pump
damage.
Cleaning the pump filter
The filter is located under the pump
cover. To be able to clean the filter, it is
necessary to loosen the screws and
remove the cover first.
• Check the pump cover seal and
replace it if necessary.
AS47D
BFP21L3
