Manual ACV BMV (page 5 of 48) (English, Dutch, French)

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BMV3 / BMV4 / BMV5 : 662Y1000 • A

Figure 10

Figure 11

One-line system Pure two-line system

max

3,5 m

Figure 12

One-line system Pure two-line system

2.7. Oil supply

The construction and installation of the system is to be car-

ried out according to DlN 4755. Local regulations are to be

observed. The oil line is to be installed to the burner such

that the oil hoses can be connected without any constrain.

An oil lter with a quick-close valve is to be installed in the

connection on the suction side. A return check valve is to be

installed in the return ow line. The burner can be operated

in a 1 and 2 pipe system. The burner is delivered for a 2-pipe

system as standard. The vacuum in the suction line may not

exceed 0.4 bar. With a suction height of more than 3.5 m, an

oil circulation pump must be installed. With operation with

an oil circulation pump or if the oil tank is located higher than

the burner pump, the burner must be operated as a 1-pipe

system. If the burner is operated as a 1-pipe system, the re-

turn ow R must be closed at the burner pump and screw G

must be removed (see g. 11).

The pressure in the oil line may not exceed 1.5 bar. After com-

plete installation of the oil lines, a leak test must be carried

out with a pressure of min. 5 bar according to DlN 4755. The

burner may not be connected during the leak test.

2.8. Oil pipes dimensions (see. fig. 12)

Nominal thermal output

of the boiler (kW)

25 35 45

Internal pipe Ø (mm) 4 4 4

H* (m)

Max. length of the oil piping (m)

0 30 30 20

1 30 23 15

2 23 16 10

*H = max. intake height in m (low sulphur fuel oil EL, oil temperature >10

°C, up to 700 m above sea level, 1 filter, 1 check valve, 6x 90° bends).

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ACV BMV Manual

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