The product may be installed in suction lines of supply systems for liquid fuels
• In single conduit systems with and without a return line.
• If you change from a two conduit to a single conduit system, the dimensions of the suction
line must be adapted.
• Recommendation: Install a fuel oil deaerator.
In a double conduit system, you must observe the following
• As a result of the higher vacuum, you may experience noises and disruptions and damage
to the pump. Determine the pressure loss. Maximum suction pressure of the burner pump
∆p
= -400mbar.
Pump
• In tank systems or battery tanks with a return line, if the withdrawal system malfunctions
(e.g. due to contamination), the return flow may cause varying levels and, because of this,
result in overfilling.
• For water protection reasons, a single conduit system is always preferable. This applies
especially to systems with no retention facility. If a two conduit system is necessary for
technical reasons, the return line must be outside the retention facility, e.g. with secure
connections.
The product may also be installed:
• In suction lines behind pump units with an operating tank.
• In domes of underground tanks.
In suction lines
will be exceeded, for example, due to thermal expansion of an enclosed volume of operating
medium.
This pressure increase can be limited by the following measures:
Installation of a suction kit
Installation of a pressure compensation valve
enclosed section of piping if a non-return valve is installed.
See installation and operation instructions for "Pressure
compensation valve", part-no. 15 550 50.
Installation in a dome
Install the Diaphragm-controlled anti-siphon device horizontally so that the top with the
ventilation opening for the membrane faces downward. This allows any condensation that
forms to run out.
Recommendation: Install a filter.
Installation behind pump units with an operating tank.
The actual height difference ∆X is the difference between the installation position of the
HS-V.2 behind the pump unit and the lowest point in the suction line.
START-UP
The product is ready for use.
If a pressure test has to be carried out in the piping before the supply system is put into
operation (e.g. according to BS 5410-1), a test pressure of max. 6 bar can be applied. A
vacuum test according to TRÖl - Section 7.2.3.2 is recommended. "Leak test with vacuum"
(see Figure 3).
• Check that the product is installed properly
• Check that the product and the connection do not leak within the scope of the recurring
checks of the supply system. Repair leaks!
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you cannot rule out that the permitted working pressure
on the oil tank with no non-return valve VTK-3).
that limits pressure increase in an
Artikel-Nr. 15 513 50 c