P
A
R
T
I: INST
ALLA
TION
12
Overall dimensions (mm)
Standard burners
* S = measure referred to burners fitted with standard blast tube
L = measure referred to burners fitted with extended blast tubeOMU
Recommended boiler drilling jig and burner flange
DN
A(S*) A(L*) B(S*) B(L*)
C
D
±5mm
E
±5mm
F
G
H
J
K
L
M
N
Omin Oma
x
P
Q
R
S
T
W
X
Y
NG/LG550
25/32
843
943
253
353
590
671
245
426
165 178 384 241 384 M10 247
157
192
174
552
377
175
69
543
533
155
40
843
943
253
353
590
744
318
426
165 178 384 241 384 M10 247
157
192
174
552
377
175
69
553
533
155
50
843
943
253
353
590
744
318
426
165 178 384 241 384 M10 247
157
192
174
552
377
175
69
603
533
155
