PLAN THE DUCT RUN
1.Make a sketch of the total system. Identify the type of each fitting and the length of straight pipe.
2.Enter your run into the 'DuctLength Chart'in the next section.
Example I |
|
|
|
| Example 2 |
__ | _.5"to 6" Transition | to 6" Transition | |||
|
| 2' of 6" | ound |
| |
|
|
|
|
| Elbow |
|
|
|
|
| 2'of 6" Round |
|
| \ | .6' Elbow | 6" Elbow | |
| ' | \ | 6" Round | ||
|
| 4' of 6" Round | )_" | ||
|
| 6" Elbow | ;"Elbow | ||
|
|
|
|
| 4'of 6" Round |
. | 6 of 6 Round |
|
6" WallCap
31/4" X10"Transition
10' of 3¼"x 10"Straig | C,..,. |
DUCT LENGTH CHART
1. Elbows, wall caps and other fittings are shown in the table on page length. Each fitting value must be added to the amount of straight overal! straight duct equivalent length.
2. Using the examples above:
3 with their equivalent straight duct duct length used, to determine the
ExampleI | DuctFitting No.ofFittings | TotalEquivalent | Example2 |
|
|
| |
| DuctFitting | No.ofFittings | TotalEquivalent | ||||
| Equivalent |
| Equivalent |
| |||
| Length |
|
| Length |
|
|
|
5"to6"Transition | 1 | 1 | 1 | 5"to6"Transition | 1 | 1 | 1 |
6"Straight | "f | 2+4+6= 12 | 12 | 6"Straight | t | 2+4+6+4= 16 | "t6 |
6" Elbow | 5 | 2 | 10 | 6"Elbow | 5 | 3 | 15 |
6"WallCap | 0 | 1 | 0 | 6"to31/'x10": | 1 | 1 | 1 |
|
|
|
| Transition | |||
Total |
|
| 23 | 31/4x10, ,Straight | 1 | 10 | 10 |
|
|
|
| 31/4"x 10"WallCap | 0 | 1 | 0 |
|
|
|
| Total |
|
| 43 |
INSTALL THE DUCT HARDWARE
1. Using good quality ducting material, install per these instructions. Follow the General Considerations page 1, Do'sand Don'ts box on page 4, and
2