Ducting Information
General
When planning the path for ducting to the outside, keep in mind the following guide- lines:
- Minimize use of elbows and transitions in ductwork as to maximize air flow to out- side of building. An efficient airflow path contributes to the overall efficiency of the Vent Hood.
-DCS recommends the use of “smooth wall” ducting, not flexible ductwork.
-Transitions are required from rectangular to round ducting
(see transitions as shown below)
- Duct tape may be used at ducting joints.
DCS-IVH-48 Requirements
- DCS recommends the use of 10” round ducting which provides 78.6 In.2 of sur- face area.
-See Duct Accessories below on for ratio to 10” transition.
-Alternate duct sizes in rectangular style may be used. If a rectangular duct style is used, the duct must equal at least 78.6 In.2 for best results. (Example- 3 1/4”x 24” duct = 78 In.2)
-Maintain consistent ducting square area as to avoid reduced air flow. [ie.- With a
DCS-IVH-36 Requirements
-DCS recommends the use of 7” round ducting which provides 34.7 In.2 of surface area.
-Alternate duct sizes in rectangular style may be used. If a rectangular duct style is used, the duct must equal at least 34.7 In.2 for best results
Duct Accessories
-Wall Caps and Roof Caps must have free open area equal to duct size diameter.
-Note that a Sealed Back Draft Damper may reduce air delivery.
-Transition for right, left or rear air discharge also available.
| 10" |
|
|
| 11" |
|
| 101/2" |
185/8" | 4 | 5 |
| /8" |
Vertical Duct Transition for 48" I
11
