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Checking the air-tightness of the gas joints is effectuated by means of soap solution bubble test of the
connection points (or other safe methods without using open flame). Appearance of bubbles indicates gas
leakage.
.
7.5
Connecting the appliance to the LPG cylinder
7.5.1. Before connecting the appliance to LPG cylinder make sure that your appliance is adjusted to work
with this type of gas. Otherwise it is necessary to render it (see p. 7.10, page 15).
7.5.2. The LPG cylinder must necessarily be equipped with a reduction unit with vapor phase stabilization
pressure 300 mm w.g., and the vapor phase output at least 1 m
ATTENTION!
Usage of reduction units with stabilization pressure different from 2.9 kPa is PROHIBITED.
7.5.3. The length of a flexible hose for connecting the appliance should be not more than 2.5 m and the
inner diameter not less than 12 mm. A flexible hose for gas supply should be resistant to the supplied gas at
set temperature and pressure. Rules of flexible hoses installation are given in p. 7.6.
7.5.4 The flexible hose must be connected to the fitting 6 (see scheme 1, 2 page 6), after removing the
protective gag from it.
7.5.5. A gas stop valve should be installed by the appliance's inlet. The stop valve must be easily
accessible. It is also recommended to install a gas filter by the appliance's inlet
7.5.6. After the mounting termination, it is necessary to check the joints and the entire length of the
connecting hose for air-tightness (see p.7.4.6).
7.5.7. In order to avoid accidents it is PROHIBITED TO:
- store gas cylinders and lay hoses under direct sunlight, next to heat sources (ovens, stoves, radiators and
other heating appliances);
- heat the gas cylinders with flame or heating appliances;
- use damaged gas cylinders.
7.5.8. It is recommended to store gas cylinders in a special metal cabinet to restrict access of children or
other unauthorized persons.
7.6. Rules of flexible hoses installation
7.6.1 Flexible hoses applied for the appliance's connection, should be certified for
the appropriate use.
Upon their working lifespan termination they should be obligatory replaced..
7.6.2. If the appliance is connected by means of the flexible hoses, it is necessary to
take into account the following rules of mounting:
- do not twist the hose relative to the longitudinal axis;
- prevent the hose from bending close to the tips: the length of hose's area next to the scaling-off, which
shouldn't be subject to bending shall be not less than 50 mm;
- The hose's bending radius, as measured by the external forming shall be not less than 90 mm.
It is recommended to:
-
use angle connections and adapters to avoid hoses fractures next to the tips
-
use interval supports when long hoses are mounted;
-
At rectilinear arrangement mount the hoses with sagging.
Technical staff manual
3
/h.
20
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