Light Oil Supply - Riello GI/EMME 1400 Installation, Use And Maintenance Instructions

5.11

Light oil supply

Explosion danger due to fuel leaks in the
presence of a flammable source.
Precautions: avoid knocking, attrition, sparks and
heat.
Make sure the fuel shut-off valve is closed before
performing any operation on the burner.
The fuel supply line must be installed by qualified
personnel, in compliance with current standards
and laws.
ATTENTION
5.11.1 Hydraulic system
 Make sure that the hoses to the pump supply
and return line are installed correctly.
CAUTION
Follow the instructions below:
 Tighten the flexible hoses with the supplied
gaskets.
 During the installation, hoses must not be
ATTENTION
stressed with twisting.
 Position hoses so that they cannot be
stepped on or get into contact with hot parts
of the boiler and so that they allow burner
opening.
 Finally, connect the other end of the flexible
hoses to the suction and return line ducts.
Before starting the burner make sure that the
return pipe line is not clogged. Any obstruction
would cause the pump seals to break.
ATTENTION
The pump vacuum should not exceed a maximum of 0.45 bar (35
cm Hg). Beyond this limit, gas is released from the fuel.
Oil pipes must be completely airtight.
G/M 1400
H
Øi
m
14
+ 2.0 55
+ 1.5 45
+ 1.0 40
+ 0.5 35
0 30
- 0.5 25
- 1.0 20
- 1.5 15
- 2.0 10
- 3.0 5
20160907
Installation
2000
Øi Øi
16 16
70 40
65 35
60 30
50 25
45 20
40 18
35 15
30 13
25 10
15 5
When the tank is at a level lower than the burner, the return line
should terminate at the same level as the suction line.
In this case a non-return valve is not required.
Should however the return line arrive over the fuel level, a non-
return valve is required. This solution however is less safe than
previous one, due to the possibility of leakage of the valve.
Key (Fig. 18)
H = Difference of level
L = Total line length
Øi = Inside pipe diameter. The copper pipes with internal
diameter of 14 and 16 mm, can be replaced with G 1/2"
and G 3/4" steel pipes.
3000
L m
Øi Øi
18 G 1/2"
60 25
55 23
50 20
45 18
40 15
35 12
30 10
25 8
20 5
10 3
20 GB
4500
Øi Øi
G 3/4" G 3/4"
85 55
80 50
70 45
65 40
60 35
50 30
45 25
35 20
30 15
15 10
D1376
Fig. 18
Øi
G 1"
130
120
110
100
90
80
70
60
45
25
Tab. J