Approvals, Conformities, Certifications - afriso Flow-Control 3/K Notice Technique

4.3 Function
The burner pump draws the fuel oil from the tank via the filter and the
check valve installed in the product and delivers it to the nozzle. The
amount of oil exceeding the nozzle capacity is pumped via the return line
into the float chamber. While the liquid level gradually increases in the
float chamber, the oil is de-aerated by the de-aeration valve.
When the oil reaches a level of approximately 20 - 30 mm above the bot-
tom, the floats begin to operate and actuate the bypass valve, thus deliv-
ering the de-aerated return oil to the suction line.
This way, the system only withdraws the amount of oil from the tank via
the filter which is actually needed for combustion. This prolongs the ser-
vice life of the filter. The maximum possible service life can be obtained
with the long filter insert made of sintered plastic (Optimum).
The major part of the volume flow to the tank consists of de-aerated fuel
oil and a small portion of fuel oil from the tank which may still contain air.
A
Fig. 5: Example Flow-Control 3/K HT with filter
4.4

Approvals, conformities, certifications

The product is TÜV-tested (report no. S 133 2013 E2).
Product description
B
C
A. Q
Tank
B. Q
Flow
C. Q
Return
D
D. Q
Nozzle
Flow-Control
= Q
Nozzle
EN
9