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The following instructions are intended
exclusively for
Unical AG Sp.A. author-
ised service personnel.
1) Maximum output adjustment
- Operate the boiler in “calibration” mode at MAXI-
MUM OUTPUT (see 3.11.1).
- Once the burner is on check that the “MAXIMUM”
pressure value corresponds to that indicated in
the table “NOZZLES - PRESSURE”.
- Should it not correspond, correct it
(see calibration procedure Cap. 4.4)
3) Conclusione delle tarature di base
- once the gas valve minimum and maximum pres
-
sure values are checked
- disable the timed “calibration” function by switching
off the
main
switch.
- Remove the flexible tube from the pressure
gauge and close the pressure socket screw
again.
-
Check that there are no gas leaks.
2) Regolazione alla potenza minima
- Operate the boiler in “calibration” mode at MIN-
MUM OUTPUT (see 3.11.1)
- Once the burner is on check that the “MINIMUM”
pressure value corresponds to that indicated in
the table “NOZZLES - PRESSURE”.
- Should it not correspond, correct it
(see calibration procedure Cap. 4.4)
All boilers leave the factory already cali
-
brated and tested, however in the event
the gas valve recalibration is required:
- Loosen the needle screw
‘’P’’
located inside the
pressure socket at gas valve outlet and connect
a pressure gauge with reference to the figure.
- Check the supply pressure value (see NOZZLES
Attention, during these operations do not take
any samples in domestic hot water mode.
- PRESSURES table).
Reading value
Maximum / minimum pressure
3.12 - ADJUSTING THE BURNER
