Changing The Combustion Adjustment Elements. Models Ed260, Ed340, Ed460 And Ed660 - GIRBAU ED460 Installation Instructions Manual

5.4.2. Changing the combustion adjustment elements. Models ED260, ED340, ED460 and ED660

Changing the type of fuel gas requires modifying the combustion adjustment elements: the injector and the
Venturi. (Figure 5.6.)
This should be carried out as follows:
 Remove the back cover (ED260 and ED340) or the
intermediate back cover (ED460 and ED660) as appropriate.
 Replace the gas injector (A) with the appropriate injector for
the new type of gas (see injector values in the table in Section
4.3.1).
 Change the position of the Venturi (B) in accordance with
Measurement E in the enclosed table. Set the position of the
Venturi using the screw C.
 On models ED460 adapted for propane gas, the gas deflector
(D) must also be fitted. (Except for machines installed in
Australia, see next paragraph).
Australian Machines: On ED260 and ED460 models adapted for
propane gas, the 120º gas deflector (D) must also be fitted.
CAUTION!
THE GAS VALVE ADJUSTMENT MUST BE LEFT UNALTERED.
 Replace and secure ALL the covers.
Start up the machine and select a program with temperature to cause the burner to ignite (see

directions in Chapter 8).
 Based on the result of the analysis of the combustion gases, if necessary, adjust the position of the
Venturi until the correct amount of combustion is obtained.
Adjusting the position of the Venturi
TYPE OF GAS
NATURAL
PROPANE 37 mbar / 14.85 in.wc
PROPANE 50 mbar / 20.07 in.wc
Adjusting the position of the Venturi (Australian machines only)
TYPE OF GAS
NATURAL
PROPANE
Connecting the machine
ED260 ED340 ED460
mm mm
(in) (in)
30 25
(1.18) (0.98)
30 13
(1.18) (0.51)
30 13
(1.18) (0.51)
ED260 ED340 ED460
mm mm
(in) (in)
30 25
(1.18) (0.98)
30 13
(1.18) (0.51)
ED660
mm mm
(in) (in)
25 25
(0.98) (0.98)
30 25
(1.18) (0.98)
30 15
(1.18) (0.59)
ED660
mm mm
(in) (in)
25 25
(0.98) (0.98)
30 25
(1.18) (0.98)
57
Fig. 5.6
Code No. 549758
Rev. nº 10/0418