Ariston INTESA TP23 Manuale d'uso, istruzioni per l'installazione e la manutenzione - Pagina 29

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Gas Adjustments
2
C
3
4
Supplied By www.heating spares.co Tel. 0161 620 6677
D
E
F
Soft - Light
Max Heating
Adjustment
Adjustment
5. To set the minimum power, disconnect a supply terminal "F1"
from the modureg and adjust screw "F" (ensure that the
10mm nut is held in position). Turn the screw clockwise to
increase the pressure and anti-clockwise to decrease the
pressure (displayed on the pressure gauge) corresponding to
the minimum power (see TABLE A page 28).
6. When you have completed the above operations, turn off the
hot water tap, reconnect the supply terminal to the modureg
on the gas valve, reconnect the compensation pipe and
replace the cap on the screw of the modureg.
Setting the maximum heating circuit power
7. To set the maximum heating circuit power, push the On/Off
button to the "ON" position -green light- and push the Heating
button and set the time clock and any external controls to the
"ON" position -green light. Turn the knob of the heating ther-
mostat clockwise to maximum.
8. Remove the inspection panel of the P.C.B. and fit a small
cross-head screwdriver in to the right hand potentiometer (see
below). Turn clockwise to increase the pressure or counter-
clockwise to reduce the pressure. Adjust the setting to the
required heating pressure value (displayed on the pressure
gauge), as indicated in the charts shown on pages 28.
9. Turn off the boiler by placing the main switch to the "OFF"
position.
Setting the pressure for soft-light ignition.
Disconnect the detection electrode connection close to the
P.C.B. (F
. 6.13).
IG
Start the boiler and during the ignition sequence adjust the left
hand potentiometer until the gas pressure reads the required
gas pressure (see the table on page 28).
Once the gas pressure is set turn off the boiler and re-connect
the detection electrode to the P.C.B.
NB.: It may be necessary to reset the flame failure reset a
number of times during this operation.
10. Remove the pipe from the test point and tighten the screw "C"
to the pressure test point in order to seal off the gas.
11. Carefully check the pressure test points for gas leaks (valve
inlet and outlet).
IMPORTANT!
Whenever you disassemble and reassemble the gas connec-
tions, always check for leaks using a leak detection fluid.
29