RADIATION TABLES
The output of a radiator is measured in square feet of radiation. To determine the number of square feet of radiation in a radiator:
1.Measure the height of the radiator.
2.Count the number of columns in a section.
3.Count the number of sections.
Multiply the total number of sections by the number of square feet per section as shown in the following tables:
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2 COL |
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7 SECTIONS |
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Column Type Radiators |
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SQ. FT. RADIATION PER SECTION |
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Height |
One |
Two |
Three |
Four |
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Inches |
Column |
Column |
Column |
Column |
Window |
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13 |
— |
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3 |
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16 |
— |
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33⁄4 |
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36” |
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18 |
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21⁄4 |
3 |
41⁄4 |
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20 |
11⁄2 |
2 |
— |
— |
5 |
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22 |
— |
— |
3 |
4 |
— |
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23 |
12⁄3 |
21⁄3 |
— |
— |
— |
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26 |
2 |
22⁄3 |
33⁄4 |
5 |
— |
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32 |
21⁄2 |
31⁄3 |
41⁄2 |
61⁄2 |
— |
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38 |
3 |
4 |
5 |
8 |
— |
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45 |
— |
5 |
6 |
10 |
— |
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SIZE SHOWN 28 SQ. FT. RADIATION |
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5 TUBE |
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7 SECTIONS |
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Tube Type Radiators
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SQ. FT. RADIATION PER SECTION |
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Height |
Three |
Four |
Five |
Six |
Window |
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Inches |
Tube |
Tube |
Tube |
Tube |
Seven Tube |
38” |
14 |
— |
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21⁄2 |
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17 |
— |
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3 |
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20 |
13⁄4 |
21⁄4 |
22⁄3 |
3 |
32⁄3 |
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23 |
2 |
21⁄2 |
3 |
31⁄2 |
— |
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26 |
21⁄3 |
23⁄4 |
31⁄2 |
4 |
43⁄4 |
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32 |
3 |
31⁄2 |
41⁄3 |
5 |
— |
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38 |
31⁄2 |
41⁄4 |
5 |
6 |
— |
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SIZE SHOWN 35 SQ. FT. RADIATION
Wall Type Radiators
167⁄8
1311⁄16
Wall radiators are measured by their height, length and thickness. The following shows the number of square feet of heating surface per section:
SQ. FT. RADIATION PER WALL RADIATOR SECTION
Type of |
Height |
Length or |
Thickness |
Heating Sq. Ft. |
Section |
Inches |
Width, In. |
Inches |
Radiation |
SIZE SHOWN 5 SQ. FT. RADIATION
5-A |
135⁄16 |
165⁄8 |
27⁄8 |
5 |
7-A |
135⁄16 |
217⁄8 |
27⁄8 |
7 |
7-B |
217⁄8 |
133⁄16 |
31⁄16 |
7 |
9-A |
185⁄16 |
291⁄16 |
27⁄8 |
9 |
9-B |
291⁄16 |
185⁄16 |
311⁄16 |
9 |
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