Burner Description; Packaging - Weight; Max. Dimensions; Standard Equipment - Riello RS 25/M BLU FS2 Installation, Use And Maintenance Instructions

27
25 10 11
20052836
(A)
mm A B
RS 25/M BLU 1000 500
RS 35/M BLU 1000 500
(B)
(C)
mm A D
RS 25/M BLU 442 422
RS 35/M BLU 442 422
(1) Nozzle: short-long
7 6
16
15
14
13
12
D7589
C kg
485 32
485 33
F
E H I L
(1)
508 230-365 140 305 138
508 230-365 152 305 138
D7588
D88
D3831
O N V M
780 84 177 1"
1/2
780 84 177 1"
1/2
4
BURNER DESCRIPTION (A)
1 Combustion head
2 Ignition electrode
3 Screw for combustion head adjustment
4 Minimum air pressure switch
(differential operating type)
5 Flame sensor probe
6 Air pressure socket
7 Gas pressure test point and head fixing
screw
8 Screws securing fan to sleeve
9 Slide bars for opening the burner and
inspecting the combustion head
10 Servomotor controlling the gas butterfly
valve and the air damper (by means of a var-
iable profile cam mechanism).
When the burner is stopped, the air damper
will be completely closed to reduce heat loss
due to the flue draught, which tends to draw
air from the fan air inlet.
11 Areas for passage of electric cables
12 Air inlet to fan
13 Gas input pipework
14 Gas butterfly valve
15 Boiler mounting flange
16 Flame stability disc
17 Flame inspection window
18 Power switch for different operations:
automatic - manual - off
Button for:
power increase - power reduction
19 Motor contact maker and thermal cut-out
with reset button (RS 35/M BLU three-phase)
20 Motor capacitor (RS 25/M BLU single-phase)
21 Control box
22 Sockets for electrical connection
23 Air damper
24 Plug-socket on ionisation probe cable
25 Guide extensions (long head version)
26 Reset button with lockout warning
27 4-pole socket cover (see electrical panel
appendix)
Two types of burner failure may occur:
• CONTROL BOX LOCKOUT:
if the 26)(A) pushbutton lights up, it indicates
that the burner is in lockout.
To reset, press the push button.
• MOTOR LOCKOUT (RS 35/M BLU three-
phase):
three-phase electrical supply; to unblock,
press the thermal relay switch 19)(A).
PACKAGING - WEIGHT (B) - approximate
measurements
• The burners are shipped in cardboard boxes
with the maximum dimensions shown in
tab. (B).
• The weight of the burner complete with pack-
aging is indicated in tab. (B).
MAX. DIMENSIONS (C) - approximate meas-
urements
The maximum dimensions of the burner are
given in (C).
Bear in mind that, in order to inspect the com-
bustion head, the burner must be pulled back.

STANDARD EQUIPMENT

1 - Gas train flange
1 - Flange gasket
4 - Flange fixing screws M 8 x 25
1 - Thermal insulation screen
4 - Screws to secure the burner flange to the
boiler: M 8 x 25
3 - Plugs for electrical wiring
(RS 25-35/M BLU single-phase)
4 - Plugs for electrical wiring
(RS 35/M BLU three-phase)
1 - Instruction booklet
1 - Spare parts list