Riello GI/EMME 1400, Manual

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20162463 20 GB
Installation
5.11 Light oil supply
5.11.1 Hydraulic system
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.
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. 17)
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.
Tab. J
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.
ATTENTION
The fuel supply line must be installed by qualified
personnel, in compliance with current standards
and laws.
CAUTION

Make sure that the hoses to the pump supply
and return line are installed correctly.
ATTENTION
Follow the instructions below:

Tighten the flexible hoses with the supplied
gaskets.

During the installation, hoses must not be
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.
ATTENTION
Before starting the burner make sure that the
return pipe line is not clogged. Any obstruction
would cause the pump seals to break.
Fig. 17
D1376
G/M 1400 2000 3000 4500
H
m
L m
Øi
14
Øi
16
Øi
16
Øi
18
Øi
G 1/2”
Øi
G 3/4”
Øi
G 3/4”
Øi
G 1”
+ 2.0 55 70 40 60 25 85 55 130
+ 1.5 45 65 35 55 23 80 50 120
+ 1.0 40 60 30 50 20 70 45 110
+ 0.5 35 50 25 45 18 65 40 100
0 30 45 20 40 15 60 35 90
- 0.5 25 40 18 35 12 50 30 80
- 1.0 20 35 15 30 10 45 25 70
- 1.5 15 30 13 25 8 35 20 60
- 2.0 10 25 10 20 5 30 15 45
- 3.0 5 15 5 10 3 15 10 25