Combustion Head Setting; Burner Start-Up Cycle - Riello RDB3.2 VORT 58 Installation, Use And Maintenance Instructions

8.8

Combustion head setting

To adjust the combustion head, proceed as follows:
 Loosen the two screws in the ring slots.
 Turn the blast tube to regulate it, until the end of the slotted
ring centres up with the notch shown in the Tab. E on
page 19 and Tab. F on page 20.
Turn in a clockwise direction:
in order to increase the volume of air entering the combus-
tion chamber and thus diminishing its pressure. There is a
reduction of CO2 and the adhesion of the flame to the air dif-
fuser disc improves.
(Setting advisable for ignitions at low temperatures).
Turn in an anticlockwise direction:
in order to reduce the volume of air entering the combustion
chamber and thus increasing its pressure. The CO2
improves and the adhesion of the flame to the diffuser tends
to reduce. (This setting is not advisable for ignitions at low
temperatures).
 Tighten the two screws.
8.9

Burner start-up cycle

Normal
Thermostat
Motor
Ignition transformer
Valve
Flame
Lock-out lamp
Lock out is indicated by a lamp on the control box (3, Fig. 1 on
page 8)
3226
Start-up, calibration and operation of the burner
~ 12s
D4268
Lock-out due to failure to light
~ 12s
22 GB
Screw
Slotted ring
0
Shutter
Screw Blast tube
~ 5s
Fig. 20
D5229
Fig. 21