Joannes G35 gas Manual De Uso Y Mantenimiento página 60

CONTROL OF THE GAS FLOW RATE AT THE START
• It is possible to achieve Ts1 by timing the safety time of no. 1 start for the no. of starts.
Example. Real safety time
• Should it result a value superior to 100 at the end of this control operate on the adjustment of opening speed of the
main valve.
SETTING THE MODULATING MULTIBLOCK VALVE
Working diagram MB-VEF
Gas-Air adjustment unit
Working diagram MB-VEF
V1 Main valve 1
V2 Main valve 2
V3 Check valve 3
V4 Check valve 4
M Working diaphragm
D Reduction point
V Ratio of setting
N Correction of "0" point
A, b, c Pressure rooms in the direction of the flow
= 1"95
Ts1 = 1"95 x 10 = 19"5
Ratio of setting
Correction of "0" point
Inlets, diagram of gas
p Pressure to the burner
Br
p Pressure to the combustion chamber
f
p Pressure to the ambient
eme
p Blowing pressure
L
1, 3, 4 Screw cap G 1/8
2, 6 Connection to the gauge, optional
5 Set screw
7, 8, 9 Impulsive lines p
pag. 57
, p , p
L F Br