Notes On Use Of Propane (L.p.g) - baltur COMIST 36 Instrucciones

NOTES ON USE OF
PROPANE (L.P.G.)
We think it would be useful to inform
you on a few points regarding use of
liquid propane gas (L.P.G.).
1) Approximate evaluation of
running costs
3
a) 1 m of liquid gas in gaseous
state has heating power inferior by
about .000 Kcal.
b) to obtain 1 m 3 of gas about 
Kg of liquid gas are required. This is
equal to about 4 litres of liquid gas.
According to the above, it can be
deduced that by using liquid gas
(L.P.G.) the following approximate
equivalence is obtained:
.000 kcal = 1 m 3 (in gaseous
state) =  Kg of L.P.G. (liquid) =
4 litres L.P.G. (liquid). From this,
running costs can be calculated.
2) Safety measures
Liquid gas (L.P.G.) has, in it
gaseous state, a specific gravity
superior to that of air (specific
gravity of propane gas in relation
to air = 1,56) and therefore does
not disperse in air like natural gas,
which has a lower specific gravity
(specific gravity of natural gas in
relation to air = 0,60), but precipi-
tates and spreads at ground level
as if it were a liquid. In view of the
above principle, the Ministero del-
l'Interno ( Home Office) has set
limitations for use of Liquid Gas in
circular n° 41/4183 of 6 February
1975. We will look into the points
we think most important:
Minimum
temperature
Tank 990 l.
Tank 3000 l.
Tank 5000 l.
a) Liquid Gas (L.P.G.) for burners
and/or boilers can only be
used in rooms above ground
and overlooking open spaces.
Installations using liquid gas in
basements or cellars are not
permitted.
b) Rooms where liquid gas is
used must have ventilation
inlets without closing devices,
located on external walls with
a surface of at least 1/15
of the room's area and a
minimum of 0,5 m
At least one third of the entire
surface of these inlets must
be located in the lower part
of the external wall, flush with
the floor.
3) Requirements for liquid gas
plant to ensure correct operation
and safety
Natural gasification, from cylinder
unit or tank, can only be used for
low power plant. 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.
4) 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 regulation.
Our valves have dimension is
planned for use at a supply pres-
sure of about
300 mm.W.C. We suggest gas
pressure be checked at the
burner by using a water column
pressure gauge.
- 15 °C - 10 °C
1,6 Kg/h ,5 Kg/h
,5 Kg/h 4,5 Kg/h
4 Kg/h 6,5 Kg/h
0006080093_00709
5) Combustion control
 .
- 5 °C
3,5 Kg/h
6,5 Kg/h
11,5 Kg/h
71 / 139
N.B. Maximum and minimum
burner pressure (kcal/h) obviou-
sly remains that of the original
natural gas burner (L.P.G. has
heating power superior to that of
natural gas. Therefore, in order to
burn fully, it requires air quantity
in proportion to the thermal power
created).
To limit consumption and avoid
serious trouble, adjust combu-
stion by using the appropriate
instruments.
It is absolutely essential to check
that the percentage of carbon
monoxide (CO) does not exceed
maximum permitted value of 0,1
% (use a phial 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.
- 0 °C + 5 °C
8 Kg/h 10 Kg/h
9 Kg/h 1 Kg/h
16 Kg/h 1 Kg/h