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0006081544_201408
ENGLISH
SPECIFICATIONS FOR PROPANE
USE
• 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.
• Safety provisions
Liquid propane gas (L.P.G.) in the gaseous form 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). Therefore, the Italian Ministry of the
Interior set limits on the use of liquid propane gas in memorandum
no. 412/4183 dated February 6 1975, of which we sum up the most
important concepts below.
-
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 are
not allowed in underground or semi-underground premises.
- 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
entire area of these inlets must be located in the lower part
of the external 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. Gas
supply capacity on the basis of tank size and minimum outdoor
temperature are shown in the table below, as an approximate
indication only.
• 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 dimen
-
sions to ensure correct ignition and gradual adjustment. The
valve sizing is foreseen for a supply pressure of approximately
300 mm W.C. You are recommended to check the burner gas
pressure using a water column manometer.
Minimum and maximum burner power (Kcal/h) is the one
with natural gas fuel. L.P.G. has greater heating capacity
than natural gas, which means that for a correct combustion
it requires a quantity of air proportionate to the heating power
produced.
TBML....MC and ME burners can also work with LPG without
adjusting the combustion head.
• C o m b u s t i o n c h e c k
To limit consumption and avoid serious trouble, adjust combus-
tion 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).
The warranty does not cover burners burning liquid gas
(L.P.G.) in installations in which these measures have not
been taken
.
Minimum
temperature
- 15 °C - 10 °C
- 5 °C
- 0 °C + 5 °C
990 l tank
1.6 Kg/h 2.5 Kg/h 3.5 Kg/h 8 Kg/h 10 Kg/h
3000 l tank
2.5 Kg/h 4.5 Kg/h 6.5 Kg/h 9 Kg/h 12 Kg/h
5000 l tank
4 Kg/h 6.5 Kg/h 11.5 Kg/h 16 Kg/h 21 Kg/h
Summary of Contents for TBML 80 MC
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