Zanussi ZGF 647 installation manual Adaptation to different types of gas, By-pass screw

8. Adaptation to different types of gas

REPLACEMENT OF INJECTORS

•Remove the pan supports.

•Remove the burner's caps and crowns.

•With a socket spanner 7 unscrew and remove the injectors (Fig. 7), and replace them with the ones required for the type of gas in use (see table on the next page).

•With a socket spanner 7 unscrew and remove the injectors (Fig. 1), and replace them with the ones required for the type of gas in use (see table 2):

•GZ 35:

a)Auxiliary burner and the semi-rapid burners: after fitting the nozzles (Fig. 8, lett. "B") screw the provided grid filter "A" (Ø 10) on them;

b)Rapid burner:screwtheprovidedgridfilterassembly "C"(Ø 16) on it.

•Reassemble the parts, following the same procedure backwards.

•Replace the rating label (placed near the gas supply pipe) with the relevant one for the new type of gas supply. You can find this label in the package of the injectors supplied with the appliance.

Should the feeding gas pressure be different or variable compared with the required pressure, an appropriate pressure adjuster (for non-LPG) must be fitted on the gas supply pipe, in compliance with the rules in force.

ADJUSTMENT OF MINIMUM LEVEL

To adjust the minimum level of the burners, proceed as follows:

•Light the burner.

•Turn the knob on the minimum position.

•Remove the knob.

•With a thin screwdriver, adjust the by-pass screw (see Fig.9).IfchangingfromnaturalgastoLPG,completely tighten clockwise the screw, until a small regular flame is obtained.

•Finally check the flame does not go out when quickly turning the knob from the maximum position to the minimum position.

This procedure can easily be carried out, anyhow the hob has been positioned or built in the working top.

Fig. 7 FO 0392

Fig. 8 FO 0465

Fig. 9

By-pass

screw

BY-pass diameters

Burner	Ø By-pass
	in 1/100
	of mm.
Auxiliary	26
Semi-rapid	30
Rapid	38

9