Gas Connection - Joannes G35 gas Manual De Uso Y Mantenimiento

GAS CONNECTION

The unit shall be provided with the accessories in compliance with the current regulations. It is always recommended
the use of a filter. Do not exert mechanical efforts on the components and therefore use a flexible joint, a pressure
stabiliser and a shutoff cock at the entrance of the thermal power plant. The main-laying has to be done with a rigid
pipe. Eventual flexible pipes have to be homologated. Also consider the necessity of the spaces required for the
maintenance of the burner and of the boiler.
After fitting the valve unit on the burner, check that there are no gas leaks during the first ignition stage.
DIAGRAM TO DETERMINE THE GAS SUPPLY PIPE CORRECT DIAMETER
Flow rate in cu.m/h (natural gas with a density of 0.6)
PRESSURE DROP mm H O
2
Example
Flow rate: 20 m /h
3
Diameter: 2''
Length: 45 m
If gas with a density of 0.6
is used, a pressure drop of
10 mm of water column
will be obtained.
PIPELINE IN INCHES
SPECIFIC WEIGHT OF OTHER GASES
0,6 . . . . . . . . . . . . . . . . . . . . . . . . . . . .1,00
0,65 . . . . . . . . . . . . . . . . . . . . . . . . . . .1,04
0,7 . . . . . . . . . . . . . . . . . . . . . . . . . . . .1,08
0,75 . . . . . . . . . . . . . . . . . . . . . . . . . .. 1,12
0,8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1,16
0,85 . . . . . . . . . . . . . . . . . . . . . . . . . . 1,28
pag. 51
Multiply by
factor