IOM – FLEXY II – 1007 – E Page 65
- Check the 230V supply v oltage of electronic boards: the
phase on terminal 01 and the neutral conductor on
terminal 02
- Check the wiring of the signal 0-10V between terminal 64
(polarity 01 of the 24V) and terminal 66 (+ coming from the
actuator)
- Check the connection of the modulating solenoid valv e
between the electronic board’s terminals 61 & 62
- Select the operating mode n°3 “output
0-330mA”:
Switch n°1 ON
Switch n°2 OFF
The m inim um press ure s ett ing m ust first
be adjusted t o e n s u r e t h at b u r n e r wi l l
safety light up, then maximum pressure
setting can be adjusted.
Any adjustment of the minimum pressure
inf luences the maximum pressure setting.
Any adjustment must be done with f lat
spanners.
Ad j u s t m e n t o f th e W 4 1 1 5 D 1 0 2 4 b o ar d ’s potentiometer:
- Connect the Multimeter with Micro-
Amps scale in serial with the
MOD U R EG.
- To prevent
hysteresis, place
the
potentiometer
called “current”
on position Min.
- Increase the
current by
turning this
potentiometer, until the desired
maximum current is obtained: here, to reach 8.0mbar, we
must apply 105mA, according to the curve below.
Ad j u s t i n g mi n i m u m p r e s s u r e s e t t i n g :
- Disconnect electrical connection to MODUREG
(=modulating solenoid valv e)
- Regulate the value of the minimum f low at 2.2mbar (f or
natural gas and at 3. 0 m bar f or Groningen gas) by t urning
the adjusting nut “Max im um pressure”.
Adjusting maximum p r essure
setting:
- By Pushing the shaft gently
downwards to the maximum
adjustment screw, y ou’ll see an approximate value of the
maximum pressure
- Reconnect the electrical
connection to MODUREG
- Regulate the value of the
maximum flow at 8.0mbar (for natural gas and at 10.4mbar
for Groningen gas) by t urning the potentiometer called
“current”, until t he desired maximum pressure.
When maximum and minimum pressures are set wire the
valve in the circuit.
- Now, check the good reaction of the assembly,
MOD U R EG + elect ronic board, by apply ing 2 V to its input
(=climatic 50 output); it must reach the minimum pressure
(2.2mbar for natural gas)
: MODULATING GAS BURNER 180 & 240kW
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