34 / 44
0006080103_201309
SPECIFICATIONS FOR
PROPANE GAS USE
We think it would be useful to inform you on a few points regarding
use of liquid propane gas (L.P.G.).
• Operating costs approximate assessment
- 1 m
3
of liquid gas in gaseous phase has a lower calorific power,
of about 22,000 kcal.
- To obtain 1 m
3
of gas we need about 2 Kg or about 4 litres
of liquid gas.
• This reveals that the use of liquid gas (L.P.G.) yields
approximately the following equivalence: 22,000 kcal = 1 m
3
(in gaseous phase) = 2 kg of L.P.G. (liquid) = 4 l L.P.G. (liquid)
from which the operating cost can be assessed.
• L.P.G. has a greater calorific value than natural gas, which
means that to burn completely, L.P.G. requires higher quantities
of combustion air.
• Safety provisions
Liquefied petroleum gas (L.P.G.) in the gaseous phase has
a greater specific weight than air (specific weight relative to
air = 1.56 for propane), which means it does not disperse in
air like natural gas, which has a lower specific weight than
air (specific weight of natural gas relative to air = 0.60), but
precipitates and spreads out at ground level (as if it were a
liquid). In view of the above principle, the Italian Ministry of the
Interior has set limitations to the use of liquid gas in a specific
regulation.The most important concepts are listed below.
If the burner is installed abroad, comply with the regulations
currently in force in that country.
- Liquefied petroleum gas (L.P.G.) burners and/or boilers may
be used only in premises located above ground level and
certified toward free spaces. Installations using liquid gas
in basements or cellars are not permitted.
- Premises where liquid gas is used must have ventilation
openings which cannot be closed on their outside walls with
a surface area measuring at least 1/15 of the surface area
of the room, with a minimum of 0.5 m
2
.
- At least one third of the total opening ventilation surface area
must be in the lower part of the outside wall, flush with the
floor.
• Measures to be taken for liquid gas system to ensure
correct, safe operation.
Natural gasification, from a cylinder
bank or tank, can be used only for systems having low
power. Supply capacity at gaseous stage, depending on tank
dimensions and minimum external temperature, is shown in the
following table but only as a rough guide.
• Burner
The burner must be ordered specifically for use with liquid
gas (L.P.G.) so that it is equipped with gas valves of sufficient
dimensions to ensure correct ignition and gradual adjustment.
The valve sizing is foreseen for a supply pressure of
approximately 300 mm W.C. We suggest gas pressure be
checked at the burner by using a water column pressure gauge.
• Combustion check
To limit consumption and avoid serious trouble, adjust
combustion using the appropriate instruments. It is absolutely
essential to check that the percentage of carbon monoxide (CO)
does not exceed the maximum permitted value of 0,1 % (use a
combustion analyser or other similar instrument). Please note
that our guarantee does not cover burners operating on liquid
gas (L.P.G.) in plant for which the above measures have not
been taken.
ENGLISH
Minimum
temperature
- 15 °C
- 10 °C
- 5 °C
- 0 °C
+ 5 °C
Tank 990 l.
1.6 Kg/h
2.5 Kg/h
3.5 Kg/h
8 Kg/h
10 Kg/h
Tank 3000 l.
2.5 Kg/h
4.5 Kg/h
6.5 Kg/h
9 Kg/h
12 Kg/h
Tank 5000 l.
4 Kg/h
6.5 Kg/h
11.5 Kg/h
16 Kg/h
21 Kg/h
Summary of Contents for GI MIST 350 DSPGM
Page 2: ......
Page 40: ...38 44 0006080103_201309 WIRING DIAGRAM ENGLISH...
Page 41: ...39 44 0006080103_201309 ENGLISH...
Page 42: ...40 44 0006080103_201309 ENGLISH...
Page 43: ...41 44 0006080103_201309 ENGLISH...
Page 44: ...42 44 0006080103_201309 RAMPA PRINCIPALE ENGLISH...
Page 46: ...44 44 0006080103_201309 ENGLISH...
Page 84: ...38 44 0006080103_201309 ESPA OL ESQUEMA EL CTRICO...
Page 85: ...39 44 0006080103_201309 ESPA OL...
Page 86: ...40 44 0006080103_201309 ESPA OL...
Page 87: ...41 44 0006080103_201309 ESPA OL...
Page 88: ...42 44 0006080103_201309 ESPA OL RAMPA PRINCIPALE...
Page 90: ...44 44 0006080103_201309 ESPA OL...
Page 128: ...38 44 0006080103_201309 FRAN AIS SCH MA LECTRIQUE...
Page 129: ...39 44 0006080103_201309 FRAN AIS...
Page 130: ...40 44 0006080103_201309 FRAN AIS...
Page 131: ...41 44 0006080103_201309 FRAN AIS...
Page 132: ...42 44 0006080103_201309 FRAN AIS RAMPA PRINCIPALE...
Page 134: ...44 44 0006080103_201309 FRAN AIS...
Page 135: ......
