Joannes G50/2 oil, Инструкция по эксплуатации и обслуживанию

Страница: 68 / 169

The dimensions of the pipelines (diameter/length) are in relation to the kind of system (one/two pipelines, intake/drop)
and the features of the pump.
The diagram indicates the maximum allowed length
L
of an intake line in function of the gradient
H
of the inside diameter
of the pipeline
d
, for an atmospheric pressure of 1013 mbar and vacuum of 0.45 bar, and considering the assembly of
4 elbows, an action valve and a non-return valve.
LIGHT OIL SUPPLY
It’s recommended to avoid this solution as it might originate remarkable troubles to the burner should it not perfectly
realised. If, however, it is not possible to avoid this installation, consider what follows:
carry out only dropping
systems; modify the pump taking off the inside grain; provide for adequate air purges in the
hottest points of the pipeline and avoid the development of air cushions.
ONE-PIPE SUPPLY
TWO-PIPES SUPPLY
0
1
2
3
3
2
1
3,5
10 20 30 60 50 40 90 80 70 100
L
H’
H
INT
AKE
DROP
8
10
12
má
x.20 m
pag. 67
GB