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Idiomas disponibles
Idiomas disponibles
D3900
(A)
mm
A
B
RS 64 MZ
1200
520
(B)
E
(C)
O
mm
A
B
D
RS 64 MZ
533 300 490 640 250 - 385 179 352 222 870 134 221
(1) Blast tube: short-long
D7837
C
kg
580
42
L
F
N
F
E
H
I
L
(1)
D7628
D88
A
B
D3906
O
N
V
M
2"
3
DESCRIPTION (A)
1 Combustion head
2 Ignition electrode
3 Screw for combustion head adjustment
4 Sleeve
5 Minimum air pressure switch
(differential operating type)
6 Flame sensor probe
7 Air pressure test point
8 Gas pressure test point and head fixing
screw
9 Screw securing fan to sleeve
10 Slide bars for opening the burner and
inspecting the combustion head
11 Servomotor controlling the gas butterfly
valve and air gate valve (by means of a vari-
able profile cam mechanism).
When the burner is stopped the air gate valve
will be completely closed to reduce to a mini-
mum heat loss due to the flue draught: the lat-
ter tends to draw air from the fan suction inlet.
12 Plate with 4 hole knock-outs for electrical
cable routing
13 Air inlet to fan
14 Gas input pipework
15 Gas butterfly valve
16 Boiler mounting flange
17 Flame stability disk
18 Flame inspection window
19 Control box with lock-out pilot light and lock-
out reset button
20 Power switch for different operations:
automatic - manual - off
Button for:
power increase - power reduction.
21 Plugs for electrical connections
22 Air gate valve
23 Plug-socket on ionisation probe cable
24 Motor contact maker and thermal cutout with
reset button
25 Engine protection
Two types of burner failure may occur:
• CONTROL BOX LOCK-OUT:
if the control box 19)(A) pushbutton lights up,
it indicates that the burner is in lock-out.
To reset, press the pushbutton.
• MOTOR LOCKOUT:
three-phase electrical supply; to unblock,
press the thermal cutout switch 24)(A).
PACKAGING - WEIGHT (B)
measurements
• The burners are shipped in cardboard boxes
with the maximum dimensions shown in table
(B).
• The weight of the burner complete with pack-
aging is indicated in table (B).
MAX. DIMENSIONS (C)
- Approximate mea-
surements
The maximum dimensions of the burner 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 give by measurement
H.
STANDARD EQUIPMENT
1 - Gas train flange
1 - Flange gasket
4 - Flange fixing screws M 10 x 35
1 - Thermal insulation screen
4 - Screws to secure the burner flange to the
boiler: M 12 x 35
5 - Fairleads for electrical connections
1 - Engine protection (with fixing screws)
1 - Plugs unit
1 - Instruction booklet
1 - Spare parts list
- Approximate
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