13
Installation
Oil Connection
Oil Pressure Control (Feed)
Oil connection
Hoses are used for connection to the oil
lines and stop valves. The hoses must
be installed according to the applicable
standards (relieved of tensile load, free
of distortion) to avoid kinking and
exclude the danger of breakage. Take
care when mounting the oil lines to
bring their ends as close to the burners
as possible and to arrange them in a
way that the boiler door and the burner
can be swung out without any obstruc-
tion.
Refer to the technical documentation for
the line dimensions for the feed and
return lines from the stop valves to the
tank.
Oil filter
A filter must be installed upstream of the
pump to protect the oil pressure pump
and the hydraulic system.
Installation options
• Two-line installation
(separate feed and return lines without
delivery pump)
• Ring line system
(with delivery pump and gas-air sepa-
rator)
Oil hose aplication area
Burner type
DN
length
[mm]
double sided
connection
bending radius
min. R [mm]
E 10
25
1500
R 1"
250
Instrument mounting
Prior to adjusting the burner make sure
to mount the test pressure gauges for
measuring the feed pressure (Item 2)
and return pressure (Item 1).
A vacuum gauge and pressure gauge
are mounted to the oil pump for measu-
ring the oil pressure.
NOTE:
After the burner has been taken
into operation the gauges must be
removed again and the connections
sealed with suitable means. If the gau-
ges are mounted to remain on the bur-
ner they should be fitted with stop
valves.
Oil pressure control (feed)
The feed pressure is controlled by
means of the pressure regulator instal-
led in the pump and should be set at
approx. 25 to 30 bar depending on bur-
ner output and nozzle make. The pres-
sure regulator is operated by turning its
screw. Make sure to fill the pump with
oil prior to taking into operation.
Pump bleeding
Open the feed and return stop valves
and ensure the ring line (if any) is in
operation. Reduce the oil pressure at
the pressure regulating valve. Turn on
the pump by pressing the contactor.
Check the pump for proper direction of
rotation. Check for proper oil delivery
and absence of leaks in the hydraulic oil
system. For bleeding the pump open
the pressure gauge connection, for
example. When taking the burner into
operation proceed by gradually increa-
sing the pressure to operating level (25-
30 bar).
Checking the pressure (oil suction
pressure)
The maximum permissible vacuum is
0.2 bar. At higher vacuum levels the fuel
oil will tend to gas evolution which may
lead to operating trouble. In the ring line
mode of operation the pump oil pres-
sure is not allowed to exceed 5 bar.
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