91
GB
RESERVED FOR THE INSTALLER
INSTRUCTIONS FOR ADJUSTMENT TO FUNCTIONING WITH GAS
DIFFERENT TO THAT OF CALIBRATION
PRESCRIPTIONS
The appliances of category II2H3+ are
usually calibrated for functioning with G20
methane gas and are adjustable to functio-
ning with liquid gas G30-G31.
GAS UNIT DISMANTLING AND NOZZLES
CHANGE
To adapt the water heater to a gas diff erent
from that of calibration, the main nozzle of
the burner and of the pilot must be repla-
ced.
NOTE:
The nozzles for the adjustment of functio-
ning with gas diff erent to that of calibra-
tion, must be expressly requested by the
dealer, if not provided with the appliance.
We recommend proceeding after having di-
smantled the gas unit.
10
16
GAS UNIT DISMANTLING
• Disconnect the cables of the fumes pro-
tector; disconnect the piezo ignition cable
and remove the gas valve thermostat pro-
be from the sheath.
• Remove the gas unit by slightly pulling it to
the outside and turning it (see fi g 18) until
full removal of the burner
1
2
3
4
5
6
7
8
1
2
10
5
6
7
8
4
9
3
1. gas valve
2 temperature regulation
knob
3 1/2” G gas connection
4 piezo igniter
5 thermocouple
6 ignition electrode
7 pilot burner
8 main burner
9 main burner nozzle
10 gas valve support
17
To Next Page
Loading...
