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Figure 2: Minimum Installation Clearances To Combustible Materials (Inches)
TABLE 2: RATING DATA
NOTE 1: Listed clearances comply with American National
Standard NFPA 31, Standard for the Installation of Oil Burn-
ing Equipment.
NOTE 2: CL Series boilers can be installed in rooms with
clearances from combustible material as listed above. Listed
clearances cannot be reduced for alcove or closet installa-
tions.
NOTE 3: For reduced clearances to combustible material,
protection must be provided as described in the ANSI/NFPA
31 standard.
C
A
Above
B
Front
Chimney
Connector
D
Rear
E
Sides
6 24 18 6 6
Boiler Model
No. *
Burner
Capacity
DOE Heating
Capacity
I=B=R NET Ratings
Minimum Chimney
Requirements
AFUE %
GPH MBH
Water
MBH
Steam
MBH
Water
MBH
Steam
MBH
Steam
Sq. Ft.
Round
In. Dia.
Rectangle
In. x In.
Height
Ft.
Water Steam
CL3-091(W) 0.65 91 80 --- 70 --- --- 6 8 x 8 15 86.0 ---
CL3-091(S) 0.65 91 --- 78 --- 56 233 6 8 x 8 15 --- 84.1
CL3-105(W) 0.75 105 91 --- 79 --- --- 6 8 x 8 15 85.1 ---
CL3-105(S) 0.75 105 --- 90 --- 68 283 6 8 x 8 15 --- 83.8
CL3-140(W) 1.00 140 120 --- 104 --- --- 6 8 x 8 15 83.6 ---
CL3-140(S) 1.00 140 --- 119 --- 89 370 6 8 x 8 15 --- 82.7
CL4-126(W) 0.90 126 111 --- 97 --- --- 7 8 x 8 15 85.8 ---
CL4-126(S) 0.90 126 --- 108 --- 81 338 7 8 x 8 15 --- 84.1
CL4-175(W) 1.25 175 152 --- 132 --- --- 7 8 x 8 15 84.2 ---
CL4-175(S) 1.25 175 --- 149 --- 112 467 7 8 x 8 15 --- 83.5
CL4-210(W) 1.50 210 179 --- 156 --- --- 7 8 x 8 15 83.1 ---
CL4-210(S) 1.50 210 --- 177 --- 133 554 7 8 x 8 15 --- 82.6
CL5-168(W) 1.20 168 147 --- 128 --- --- 8 8 x 8 15 85.7 ---
CL5-168(S) 1.20 168 --- 144 --- 108 450 8 8 x 8 15 --- 83.7
CL5-245(W) 1.75 245 210 --- 183 --- --- 8 8 x 8 15 83.0 ---
CL5-245(S) 1.75 245 --- 207 --- 155 646 8 8 x 8 15 --- 82.5
CL5-280(W) 2.00 280 238 --- 207 --- --- 8 8 x 8 15 82.5 ---
CL5-280(S) 2.00 280 --- 235 --- 176 733 8 8 x 8 15 --- 82.3
* Boiler Model Sufx: (W) = Water, (S) = Steam