Installation
2-2
750-297
Profire E/LNE Series Manual
2.3 — Combustion Chamber Recommendations and E Refractory Dimensions
The combustion chamber dimensions should be proportioned to the heating load of the boiler.
2.3.1 - Watertube Boiler Dimensions
* Dimension is for oil applications. Dimension will be less for gas only applications.
Burner
Size A B C D E F G
Combustion
Chamber
Min. Width
Combustion
Chamber Min.
Length
84 10 19 19 31.5* 64 3.5 23 38 74
105 10 19 23 31.5* 64 3.5 23 46 84
126 10 19 24 31.5* 64 3.5 23 50 90
147 12 22 25 31.5* 64 3.5 23 55 100
168 12 27.5 27 37* 78 3.5 31 60 108
210 12 27.5 30 37* 78 3.5 31 70 120
252 15 31.5 30 37* 78 3.5 31 84 132
294 15 31.5 32 42* 87 3.5 33 84 144
336 18 34.6 34 42* 87 3.5 33 86 152
378 18 34.6 36 42* 87 3.5 33 92 160
420 18 34.6 38 42* 87 3.5 33 96 170
FIGURE 2-1. Combustion Chamber Dimensions (Watertube Boiler)
BLOCK INSULATION
45°
B
C (MIN)
A
C
L
BURNER
STANDARD
FIREBRICK
FLOOR
E
D
1-1/2" + A
G
F