Burner Description - Riello RLS 70 Installation Instruction

3.7

Burner description

1 Combustion head
2 Ignition electrodes
3 Screw for combustion head adjustment
4 Sleeve
5 Relay for oil / gas selection
6 Fan motor
7 Motors contactors and thermal cut-out with reset button
8 UV scanner
9 Terminal strip
10 Knockouts for electrical connections by installer
11 Oil / gas selector switch
12 Flame safeguard
13 Flame inspection window
14 Low air pressure switch (differential operating type)
15 Slide bars for opening the burner and inspecting the combus-
tion head
16 Safety solenoid valve
17 Low and high fire oil valves
18 Gas pressure test point and head fixing screw
6046
Technical description of the burner
19 Air pressure test point
20 Servomotor
21 Pump motor
22 Low oil pressure switch
23 Pilot attachment
24 Pump
25 Gas input connection
26 Boiler mounting flange
27 Flame stability disk
28 Screw securing fan to sleeve
Two types of burner failure may occur:
Flame relay lock-out: if the flame relay 12) (Fig. 3) pushbutton
lights up, it indicates that the burner is in lock-out.
To reset, press the pushbutton.
Motor trip: release by pressing the pushbutton on the thermal
overload 7) (Fig. 3).
8
When the burner is not operating the air damper is fully closed
in order to reduce heat loss.
D2299
Fig. 3