29
ENGLISH
Installation Instructions
The following instructions are intended exclusively
for
authorised service personnel
.
- Remove the cap and insert the CO2 analysis probe in the
flue gas sample point of the intake/exhaust terminal, see
chap. 3.11.2.
All boilers leave the factory already calibrated and
tested, however in the event the gas valve recali-
bration are required:
1) Maximum output adjustment
- Operate the boiler in “calibration” mode at MAXIMUM OUT-
PUT (see 3.11.1)
- Once the burner is on check
that the CO
2
“MAXIMUM” value corresponds to that indicated
in the table “NOZZLES - PRESSURE”.
- if it does not correspond, correct it by turning the screw
“S”
CLOCKWISE to decrease it, ANTICLOCKWISE to increase
it.
3.12 - ADJUSTING THE BURNER
2) Minimum output adjustment
- Operate the boiler in “calibration” mode at MINIMUM OUTPUT
(see 3.11.1)
- Once the burner is on check that the CO
2
“MINIMUM” value
corresponds to that indicated in the table “NOZZLES - PRES-
SURE”.
- Correct it if needed by turning (with a screwdriver) the screw
“R”;
CLOCKWISE to increase it, ANTICLOCKWISE to de-
crease it
(S)
ADJUSTMENT SCREW
MAXIMUM OUTPUT
(R)
ADJUSTMENT SCREW
MINIMUM OUTPUT
