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Technical description of the burner
3
3.7
Overall dimensions
The dimensions of the burner are shown in Fig. 2.
Bear in mind that inspection of the combustion head
requires the burner to be opened and the rear part drawn
back on the guides.
The dimensions of the open burner are indicated by
dimension O.
mm
A
RS 64/E MZ
533
(1) Blast tube: short-long
3.8
Firing rates
Fig. 3
The maximum output is chosen within area A.
The minimum output must not be lower than the minimum limit
of the diagram.
Fig. 4
20022445
F
B
D
E
300
490
640
250 - 385
H
I
L
(1)
179
352
222
A
A
Warning
The firing rate was obtained considering a room temperature of
20 °C and an atmospheric pressure of 1013 mbar (approx. 0 m
above sea level), with the combustion head adjusted as shown
in Ch. 4.6.
8
GB
L
F
N
E
O
M
N
O
V
2"
134
870
221
D3903
The firing rates were obtained in spe-
cial test boilers, according to EN 676
regulations.
Fig. 4 indicates the diameter and
length of the test combustion chamber.
Example
Output 407 kW (350 Mcal/h):
diameter 50 cm,
length 1.5 m.
The coupling is ensured when the
boiler is EC type-approved; for boilers
or ovens with combustion chambers of
very different dimensions compared to
D497
those shown in the diagram of Fig. 4,
preliminary checks are recommended.
A
B
D3906
Fig. 2
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