Instructions for the Installer
11
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.
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.
Burner
Nominal
heat
capacity
(kW)
Bottled gas – G30/G31 30/37 mbar
Nozzle
diameter
1/100 mm
By-pass
mm
1/100
Reduced
heat
capacity
(W)
Capacity
g/h G30
Capacity
g/h G31
Semi rapid (1) 1.7 62 33 500 124 121
Rapid (2)
2.9 80 50 1050 211 207
Ultra-Rapid (3)
4.2 98 65 1600 305 300
5.3 Adjusting for town gas
Proceed as described in point “5.2 Adjusting for bottled gas” but select the nozzles and adjust
the primary air flow for town gas, as indicated in the table below and in point “5.4 Adjusting
the primary air flow”..
Burner
Nominal
heat
capacity
(kW)
Town gas – G110 8 mbar
Nozzle diameter
1/100 mm
Reduced heat capacity
(W)
Semi rapid (1) 1.7 165 500
Rapid (2)
2.9 230 1050
Ultra-Rapid (3)
4.2 300 1100
5.4 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)
Town gas – G20 20 mbar
Nozzle diameter
1/100 mm
Reduced heat capacity
(W)
Semi rapid (1) 1.7 92 500
Rapid (2)
2.9 123 1050
Ultra-Rapid (3)
4.2 145 1400
(9 pages)
(4 pages)
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