Securing The Burner To The Boiler; Adjusting The Choke - Riello Gulliver BG6.1D Installation, Use And Maintenance Instructions

5.5

Securing the burner to the boiler

To install the burner on the boiler, do the following:
 insert the screw and two nuts 9) on the flange 1) (Fig. 6);
 if necessary, widen the holes of the insulating gasket
4) (Fig. 6);
 fix the flange 1) to the boiler door 3) (Fig. 7), using the
screws 5) and (if necessary) the nuts 2), interposing the
insulating gasket 4);
 open the boiler door and insert the choke 9) on the recir-
culating pipe 6), adjusting it according to the calibrations
in Tab. A page 18;
 insert the recirculating pipe 6) on the blast tube of the
burner 7), and fix it with the nut 8).
Boiler door must have a max. thickness of
180 mm, refractory lining included.
WARNING
6
 When the installation is complete, check the burner is
slightly tilted, as shown in Fig. 8.
D5025
20015403
8
9
3
Installation
9
2
5
7
5.5.1

Adjusting the choke

In certain applications, e.g. on boilers with three flue gas passes
or systems with particularly long flues (or flues with a wide sec-
tion), flame instability is possible due to the excessive recircula-
tion of flue gases through the recirculating pipe 1).
In these cases it is possible to adjust the choke 2) to reduce the
section through which the flue gases pass, referring to Tab. A
page 18.
D9687
Fig. 8
12 GB
4
1
9
D9618
4
1
5
D9619
1
2
m m
D5012
Fig. 6
Fig. 7
Fig. 9