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Convection+Humidif.Combi Direct 5x2/3 GN / 7-11-20 x 1/1 GN / 7-11-20 x 2/1 GN
2.8 TRANSFORMATION FOR DIFFERENT GAS TYPES.
(Cooking chamber heating burner) (Fig. 2.8A-B-C)
The appliances are usually supplied to function with the type of gas of installation KAT I3..., I2..., as
stated in our technical features label.
Exceptionally when the type of gas is not known, the oven will be supply to function in KAT II2...,
suitable for a transformation to a different kind of gas.
IN THIS CASE IF SUCH TRANSFORMATION IS NECESSARY, IT MUST BE DONE ONLY BY
QUALIFIED PERSONNEL, TRAINED BY THE MANUFACTURED WITH THE HELP OF THE
TOOLS BELOW DESCRIBED.
The cooking chamber is equipped with a heating system with burner and pre-mixed gas.
This burner is so called because it mixes air and gas
at a ratio of 1:1. It can burn without producing
harmful emissions, even when there is no more air,
usually called secondary air, normally present at the
bottom of the flame.
The system comprises:
1- A gas solenoid valve (A);
2- A Venturi unit for air extraction (B);
3- An electric fan (C);
4- A unit with 2 electrodes (D), one for ignition and
the other for flame control;
5- An electronic control box (E) for burner ignition
and flame control;
6- An electronic control box (F) for adjusting the
electric fan speed;
7- A "premix" type gas burner, positioned directly
on the electric fan.
The appliance has been tested and equipped to operate with the gas shown on the data plate on
the right-hand side of the appliance.
If connections must be made using another type of
gas, it will be necessary to transform
8 mm screwdriver, a frequency meter, a gas
flow gauge and a combustion gas analyzer,
strictly following the following warnings:
Gas connection pressure control
2.8A
2.8B).
Connection pressure is measured using a "U"-
shaped gauge, on the pressure input (C) of the gas
valve.
Connection pressures are shown in the "Gas
connection technical data" table 1.8
ATTENTION
: for the ovens model
(G) (Fig.2.8A) of the Venturi suction with the suitable one:
for LPG gas G30= Øi 18
for natural gas= Øi 22
using a 3 and
(Fig.
207G
606G
and
it's necessary to replace the fixed air regulator
45
Fig. 2.8A
Fig. 2.8B
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