AIR / GAS PRINCIPLE DIAGRAM
1
Air regulation servomotor
2
Air pressure switch
3
Maximum gas pressure switch
4
Gas supply modulating throttle valve
5
Main flame gas valve
6
Valve seal control device (integral with the control box) with pressure gauge
E
7
Safety gas valve
8
Minimum gas pressure switch
N
9
Gas pressure regulator
10 Gas filter
G
11 Anti-vibration coupling (not included)
12 Ball valve (not included)
L
13 Gas regulation servomotor
I
S
H
MEASUREMENT OF THE IONISATION CURRENT
The minimum ionisation current for the control box to run is 1.4 µA.
The burner flame generates a markedly higher current that will not
normally require any control box checks.
If you want to measure the ionisation current you have to connect
a milliammeter in series to the ionisation electrode cable, as shown
in diagram.
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0006081361_201002
N° 0002910900
REV.:08/11/2004