11
GENERAL
A
Ø
L
b
Blast tubes must not exceed the specified lengths by more than 20%.
a
Do not re-use old burners if their blast tube lengths are below those specified in the table.
If you are installing a new boiler but re-using an old bur-
ner, always perform the following checks:
- Make sure that the performance of the old burner is
adequate for the requirements of the boiler
- Make sure that the length and diameter of the burner’s
blast tube are as specified in the following table
b
When you finish installing the burner in the boiler,
fill the gap between the burner’s blast tube and the
refractory material in the door with the ceramic insu-
lation (A) supplied with the boiler.
45°
45°
A
A
Ø
BURNER PLATE
RTQ 3S
r
boilers have burner plates with holes
arranged to accept the recommended burners. The fol-
lowing table shows the dimensions of the holes.
L < S
S
L
IMPORTANT NOTES FOR BURNER
INSTALLATION
Before fixing the burner to the boiler, make sure that:
- The door opens the right way (see the relevant sections
for details on how to reverse the door).
- The length (L) of the burner fixing bolts is less than
(S), i.e. the total depth of the seal, plates and washer.
Longer bolts can cause the door to warp, compro-
mising its ability to seal the boiler hermetically and
permitting the release of combustion fumes.
To ensure correct burner installation, also refer to the
burner’s own manual.
DIMENSIONS
(mm)
RTQ 3S
91
115 166 217 255 318 349 448 511 575 639 766 896 1100 1300 1600 2100 2400
L min.
170 170 170 215 215 240 240 260 260 275 275 280 325 340 365 375 375 375
Ø hole in door 140 140 160 180 180 180 180 185 185 205 205 205 260 280 300 350 350 350
DIMENSIONS
(mm)
RTQ 3S
91
115 166 217 255 318 349 448 511 575 639 766 896 1100 1300 1600 2100 2400
Ø
140 130 140 165 165 165 165 165 165 185 185 185 185 205 205 265 230 300
A
120 120 131 158,5 158,5 158,5 158,5 158,5 158,5 195 195 195 195 195 195 260 255 260
Threads
M8 M8 M8 M8 M8 M8 M8 M8 M8 M12 M12 M12 M12 M12 M12 M16 M16 M18
