35
IT
CH
GB
IE
CHECKING PRIMARY AIR TO THE MAIN BURNERS AND PILOT NOZZLES
All the burners are fitted with an air regulator by means of which the primary air can be varied thanks to an adjustable
bush that can be locked with a screw. In the “Burner Technical Data” table you will find the approximate values for the
“h” parameter (primary air). The flow of primary air must be regulated so there is no detachment of the flame when the
burner is cold or a return of the flame when the burner is hot.
The pilot air is regulated when the appliance is tested and inspected for the gas it is set for.
If you are going to change to a different type of gas, regulate the air by means of the adjusting bush until the flame stops
sputtering and becomes an intense blue colour.
“BURNERS” TECHNICAL DATA TABLE
Burner max 7 kW -min 1,8 kW
12.68 kWh/KG
G30
BUTANE
30 mbar
12.87 kWh/KG
G31
PROPANE
37 mbar
9.45 kWh/m
3
st.
G20
NATURAL GAS H
20 mbar
Burner injector 1/100 mm
Min. output adjustment 1/100 mm
Pilot Injector 1/100 mm
Consumption
Primary air h=mm
130
65
20
kg/h 0,552
open
130
65
20
kg/h 0,543
open
195
regolabile
30
m
3
st./h 0,740
1
Burner max 10 KW-min 2,3 kW
Burner injector 1/100 mm
Min. output adjustment 1/100 mm
Pilot Injector 1/100 mm
Consumption
Primary air h=mm
155
75
20
kg/h 0,788
open
155
75
20
kg/h 0,777
open
230
adjustable
30
m
3
st./h 1,058
1
Oven burner max. 4 kW -min 1,15 kW
Burner injector 1/100 mm
Min. output adjustment 1/100 mm
Consumption
Primary air h=mm
103
50
kg/h 0,315
7,5
103
50
kg/h 0,311
7,5
160
adjustable
m
3
st./h 0,423
6
RULES FOR CONVERTING AND INSTALLING FOR OTHER TYPES OF GAS
Our appliances are tested and regulated with liquid gas (see data plate).
The conversion or adaptation to another type of gas must be carried out by a specialised technician. The nozzles for the
various types of gas are supplied in a packet and are marked in hundredths of mm (see “burners” technical data table).
CHANGING THE OPEN RING NOZZLES
Main nozzles (Fig. C):
Take the rungs off, remove the burners and trays, with a size 12 spanner substitute the nozzles with the appropriate
ones, regulate the primary air (h) (see the “burner” technical data table) unscrewing the securing screw. Once regulated,
tighten the screw, adjust the minimum flame by turning the screw to the right or left until the thermal power reaches 1.8
for the 7 kW burner and 2.3 kW for the 10 kW burner.
Caution: If liquid gas is being used the minimum adjustment screw must be locked right down.
Pilot nozzles (Fig. D):
Take the rungs off, remove the burners and trays, with a size 8 spanner loosen the nozzle holder unit, with a size 11
spanner unscrew the nozzle holder all the way, with a slotted screwdriver unscrew the pilot nozzle and replace it with
the appropriate one and tighten right down.
Put everything back in place and regulate the air by means of the adjusting bush until the pilot flame stops sputtering
and becomes an intense blue colour.
CHANGING THE OVEN BURNER NOZZLE
To change the oven nozzle proceed as follows:
•
Remove the bottom oven panel;
•
Unscrew both securing screws from the burner (see Fig. E), pull it out and unhook it,
•
Substitute the nozzle using a suitable spanner (2) (see the “Technical Data” table).
•
After this procedure, fix the burner again.
•
Regulate the air regulating bush (4) to the corresponding value given in the “technical data” table, unscrewing
the securing screw with relative check nut, regulate the minimum by turning the screw (Fig. F, 1) to the right or
