Unical !DEA AB 24, Руководство по установке и обслуживанию

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25
ENGLISH
Installation Instructions
gas valve !Dea aC 23 - !Dea aC 23 PlUs
The following instructions are intended
exclusively for Unical ag sp.a. author-
ised service personnel.
3.12 - aDJUsTing THe BURneR
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
- PRESSURES table).
Attention, during these operations do
not take any samples in domestic hot
water mode.
socket
pressure
OUTPUT
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 by removing
the screw cap ‘’Q’’ and turning screw “S” below
CLOCKWISE to increase it, ANTICLOCKWISE
to decrease it.
3) Conclusion of the basic calibrations
- once the gas valve minimum and maximum pres-
sure values are checked and top-up is required
(points 1-2):
- disable the timed “calibration” function by switch-
ing 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.
P
Q
R
P
R
Q
S
2) Minimum output adjustment
- Operate the boiler in “calibration” mode at MINI-
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”.
- Correct it if needed by turning (with a screwdriver)
the screw
“R”;
CLOCKWISE to increase it, ANTI-
CLOCKWISE to decrease it.
S
P