Instructions for the Installer
27
5.2 Adjusting for bottled gas
Undo the screw A and push the support B fully down. Remove the nozzle C with a
spanner and fit the suitable one following the instructions in the tables referring to the
type of gas to be used. The nozzle must not be tightened with a torque of more than 3
Nm. Return the support B to its original position, so that the nozzle C is perfectly
covered.
Burner
Nominal
heat
capacity
(kW)
Regulate the air flow by moving the Venturi pipe D until the distance “X” stated in point
"5.5 Adjusting the primary air flow” is obtained and secure it with the screw A. When the
adjustments are complete, restore the seals with wax or an equivalent material.
Bottled gas – G30/G31 30/37 mbar
Nozzle
diameter
1/100 mm
By-pass
mm
1/100
Reduce
d heat
capacity
(W)
Capacity
g/h G30
Capacity
g/h G31
Auxiliary 1.05 48 30 400 76 75
Semi rapid 1.7 62 33 500 124 121
Rapid (3) 3.5 89 50 1050 254 250
Rapid (7) 2.9 80 50 1050 211 207
Rapid (6) 3.1 85 50 1050 225 221
Ultra-Rapid 4.2 98 65 1600 305 300
Internal 0.9 45 30 400 62 61
Double
Crown (4)
External 3.3 87 55 1200 240 236
Internal 0.9 45 30 400 62 61
Double
Crown (8)
External 4.0 95 55 1200 291 286
5.3 Adjusting for natural gas
The appliance is tested with G20 (2H) natural gas at the pressure of 20 mbar. To return the
appliance to the condition required to use this type of gas, proceed as described in point “5.2
Adjusting for bottled gas” but select the nozzles and adjust the primary air flow for natural gas,
as indicated in the table below and in point “5.5 Adjusting the primary air flow”.
Burner
Nominal
heat
capacity
(kW)
Natural gas – G20 20 mbar
Nozzle diameter
1/100 mm
Reduced heat capacity
(W)
Auxiliary 1.05 132 400
Semi rapid 1.7 165 500
Rapid (3) 3.5 250 900
Rapid (7) 2.9 230 1.05
Rapid (6) 3.1 240 900
Ultra-Rapid 4.2 300 1100
Internal 0.9 126 400 Double
Crown (4)
External 3.3 250 1200
Internal 0.9 126 400 Double
Crown (8)
External 4.0 140 1200
