Checking Heat Output; Connection With Natural Gas H G20; Checking Primary Air In Main Burners; Technical Burners Data Table - Lotus CW-74G Guia Para La Intalación E Instrucciones De Uso

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appliances undergo careful testing: the type of gas, the operating pressure and the category are indicated on the data

plate.

The appliances must be checked in such a way as to verify that the heat output is correct:

•

The heat output (thermal power) is indicated on the data plate of the appliance.

•

Firstly, check that the appliance can be used with the type of gas supplied; then check that the indication on the

plate corresponds to the gas to be used. For converting to another type of gas, check that the type of gas complies

with what is stated in this instruction manual.

The pressure is read with a gauge (minimum resolution of 0.1 mbar) inserted in the relative pressure outlet.

Remove the hermetically closed screw and connect the gauge pipe.

After reading, put back the screw, tightening it hermetically and check for leaks.

Connection for liquid gas G30/G31

The connection pressure for liquid gas is 30 mbar with butane and 37 mbar with propane.

Check the plate, read the pressure and verify that the description of the nozzle installed corresponds to the one supplied

by the manufacturer.

Connection with natural gas H G20

The connection pressure for natural gas is 20 mbar.

Check the plate, read the pressure and verify that the description of the nozzle installed corresponds to the one supplied

by the manufacturer.

All the burners are provided with a bush for regulating the primary air which must be positioned at a distance h

indicated in the technical data table.

CW...-74G 1 burner

CW...-78G 2 burners

(max 9 kWmin.2,7kW)

Burner Injector 1/100 mm

Min. output adjustment 1/100 mm

Pilot Injector

Primary air h=mm

Consumption

RULES FOR CONVERTING AND INSTALLING OTHER TYPES OF GAS

Our appliances are tested and regulated for liquid gas (see plate inside).

The conversion or adaptation to another type of gas must be carried out by a specialized technician. The nozzles for the

various types of gas are in a packet supplied with the appliance and are marked in hundredths of mm (see the technical

data table).

After having carried out the conversion for another type of gas, it is necessary to regulate minimum output by turning

the screw to the right or to the left until the minimum heat output reaches 2,7 kW.

SUBSTITUTING THE NOZZLE IN THE MAIN BURNER

•

Remove the front fixing screws from the panel, remove the start-up cable from the piezoelectric ignition device

•

Using a suitable spanner, unscrew the nozzle and substitute it with the right one (see the technical data table).

SUBSTITUTING THE NOZZLE IN THE PILOT BURNER

The flame of the pilot burner has fixed air.

The only operation necessary is the substitution of the nozzle according to the type of gas.

It is therefore necessary to unscrew the screws as specified in the previous point; with a suitable spanner unscrew the

fitting and substitute the nozzle with a suitable one. With the right nozzle, the flame must lap the thermocouple.