Burner Description; Packaging - Weight; Max. Dimensions; Standard Equipment - Riello RLS 28 Installation, Use And Maintenance Manual

D2536
(A)
inch A B
RLS 28 39 31 / 32 " 24 13 / 16 " 19
RLS 38
39 31 / 32 " 24 13 / 16 " 19
RLS 50 39 31 / 32 " 24 13 / 16 " 19
(B)
RLS A B C
28 18 23 / 32 " 18 21 / 32 " 22 13 / 16
38 18 23 / 32 " 18 21 / 32 " 22 13 / 16
50 18
23 / 32 " 18 21 / 32 " 22 13 / 16
(C)
D2534
C lbs
11 / 16 " 95
99
11 / 16 "
11 / 16 " 101
D88
D E F G
" 7 1 / 2 " 5 1 / 2 " 13 27 / 32 " 6 7 / 16
" 7 29 / 32 " 5 31 / 32 " 13 27 / 32 " 6 7 / 16
" 8 1 / 2 " 5 31 / 32 " 13 27 / 32 " 6 7 / 16
D1118
D495
H I L M
" 31 7 / 8 " 4 1 / 4 " 6 5 / 8 " 1 1 / 2 "
" 31 7 / 8 " 4 1 / 4 " 6 5 / 8 " 1 1 / 2 "
" 31 7 / 8 " 4 1 / 4 " 6 5 / 8 " 1 1 / 2 "
4
BURNER DESCRIPTION (A)
1 Combustion head
2 Ignition electrodes
3 Screw for combustion head adjustment
4 Sleeve
5 Low air pressure switch
(differential operating type)
6 Air pressure test point
7 Gas pressure test point and head fixing screw
8 Screw securing fan to sleeve
9 Slide bars for opening the burner and inspecting the
combustion head
10 Pump
11 Safety solenoid valve
12 Low and high fire oil valves
13 Servomotor
14 UV scanner
15 Plate with four hole knock-outs for flexible hoses and
electrical cable routing.
16 Air inlet to fan
17 Gas input connection
18 Boiler mounting flange
19 Flame stability disk
20 Flame inspection window
21 Oil / gas selector switch
22 Fan motor contactor and thermal overload with reset
button (RLS 50 three-phase)
23 Flame safeguard with lock-out pilot light and lock-out
reset button
24 Power switch for different operations:
automatic - manual - off
Button for:
power increase - power reduction
25 Burner terminal strip
26 Low oil pressure switch
27 Pump motor
Two types of burner failure may occur:
• Flame safeguard lock-out :
if the flame relay 23)(A) pushbutton lights up, it indi-
cates that the burner is in lock-out.
To reset, press the pushbutton.
• Motor trip (RLS 50 three-phase):
Release by pressing the pushbutton on the thermal
overload 22)(A).
PACKAGING - WEIGHT (B)
ments
• The burners are shipped in cardboard boxes with the
maximum dimensions shown in table (B).
• The weight of the burner complete with packaging is
indicated in Table (B).
MAX. DIMENSIONS (C)
ments
The maximum dimensions of the burners are given in
(C).
Note that if you need to examine the combustion head,
the burner must be pulled backward on the slide bars and
turned upward.
The maximum dimension of the burner, without the cover,
when open is given by measurement H.

STANDARD EQUIPMENT

1 - Gas train flange
1 - Flange gasket
4 - Flange fixing screws
4 - Screws to secure the burner flange to the boiler:
3 / 8
W x 1"
1 - Adaptor G 1 / 8 " / 1 / 8 " NPT
1 - Instruction booklet
1 - Spare parts list
- Approximate measure-
- Approximate measure-