21
Types
Adjustment for G20 and G25
Adjustment G31
Gas pressure for G20
Gas pressure for G25
Gas nozzle
Gas pressure for G31
Gas nozzle
Minimum
power
Maximum
power
Minimum
power
Maximum
power
Minimum
power
Maximum
power
ATX25
5 x AL 1.9
4.0 mb
13.0 mb
6.5 mb
17.0 mb
5 x AL 1.3
10.0 mb
25.0 mb
ATX35
7 x AL 1.9
4.0 mb
13.0 mb
6.5 mb
17.0 mb
7 x AL 1.3
10.0 mb
25.0 mb
ATX45
9 x AL 1.9
4.0 mb
13.0 mb
6.5 mb
17.0 mb
9 x AL 1.3
10.0 mb
25.0 mb
ATX60
12 x AL 1.9
4.0 mb
13.0 mb
6.5 mb
17.0 mb
12 x AL 1.3
10.0 mb
25.0 mb
ATX80
16 x AL 1.9
4.0 mb
13.0 mb
6.5 mb
17.0 mb
16 x AL 1.3
10.0 mb
25.0 mb
5.1 Changing gas
The heaters are equipped of burners with nozzles allowing the use of natural gas G20/G25 and LPG G31.
The hole of the nozzle are studied to ensure a good combustion and flame stability.
1 - Disconnect the electrical supply connector and shut off the gas supply.
2 - Disconnect the ignition and ionization cables.
3 - Unscrew the fixing nut of the gas line (1) and the screws (2) which fix the gas ramp.
4 - Replace the nozzles according the using gas (refer to the setting tables below5 - Screw the new
nozzles (3) without sealing with tightening torque of 20 Nm.
6 - Reassemble the gas ramp fixed by the 2 screws (2) then the nut of the gas line.
7 - Reconnect the ignition and ionization cables
Be careful to do not damage the gas sealing. Replace it if necessary and check the sealing.
5-COMBUSTION SETTINGS
Be careful, these interventions must be carried out by a qualified professional person
1
3
5.2 Selection table for nozzles and gas pressure :
5.3 Burner combustion settings
These interventions must be carried out by a qualified professional person
To realize this setting, it is necessary to have the following tools :
1– Calibrated flue gas analyser which reads O2 or CO2, CO, fumes temperature, ambient temperature.
2– One cross-headed screwdriver PZ2 and an hexagon key of 10.
3– One calibrated gas manometer with a scale from 0 to 60mb.
2
