Finterm Joannes G 50/2 Manual De Instrucciones De Manejo Y Mantenimiento página 45

1 Shut-off valve with seal control at 1 bar and
loading loss inferior to 0,5 bar
2 Anti-vibrating joint
3 Pressure tap
4 Gas filter
5 Gas pressure regulator
6 Minimum gas pressure control device (pres-
sure switch)
7 Safety solenoid valve class A. Closing time
Tc 1"
After fitting the valve unit on the
For proper burner operation you are recommended to install the following components in sequence,
starting from the burner:
– pressure regulator;
– gas filter;
N.B. The stabiliser and the gas pressure switch vents should be connected to a pipe having the
same diameter and vented outside the boiler room in a position such as not to cause hazards
in case of gas leaks, i.e. away from windows and balconies, at a height of at least three
meters from the ground level.
The gas pipeline shall be in compliance with the current regulations and both the accessories
and the gas pipeline shall have a diameter proportional to the length of the pipeline and to the
gas supply pressure.
DIAGRAM TO DETERMINE THE GAS SUPPLY PIPE CORRECT DIAMETER
Flow rate in cu.m/h (natural gas with a density of 0,6)
FIG. 7
PRESSURE DROP in mm H O
2
Example:
Flow rate: 20 cu.m/h
Diameter: 2"
Length: 45 m
DIAGRAM OF THE GAS SUPPLY PIPELINE
10 Combustion head
11 Control device of minimum air pressure
12 Control device of maximum gas pressure (when
13 Seal control device (BY REQUEST)
BURNER STANDARD EQUIPMENT
burner, check that there are no gas leaks during the first ignition stage.
– anti-vibrating joint
– fast acting shut-off valve.
If gas with a density
of 0,6 is used, a pressure
drop of 10 mm of water
column will be obtained
8
8 Slow acting or more stages control solenoid
valve class A with inset gas flow rate control
device.
Closing time Tc ≤ 1"
9 Gas flow rate control device, usually set in the
solenoid valve 7 or 8.
the regulator 5 is not provided)
SPECIFIC WEIGHT OF OTHER GASES
0,6 . . . . . . . . . . . . . . . . . . . .
0,65 . . . . . . . . . . . . . . . . . . .
0,7 . . . . . . . . . . . . . . . . . . . .
0,75 . . . . . . . . . . . . . . . . . . .
0,8 . . . . . . . . . . . . . . . . . . . .
0,85 . . . . . . . . . . . . . . . . . . .
GB
FIG. 6
Multiply
by factor
1,00
1,04
1,08
1,12
1,16
1,28