© MINOTAIR Ventilation Inc. - www.minotair.com
21
(PENTACARE-V12-OWNER'S MANUAL-2019-Rev-014)
S
IZING
A
IR
D
UCTS
•
To minimize turbulence and ventilation noise, the ducts must be sized based on the
numbers in the shaded columns below, unless they have been otherwise sized by a
qualified professional. The conduit diameters are denoted in inches (in) or in
millimeters (mm).
•
The duct diameter must be proportional to the airflow established for the room.
Thus, if the airflow
has been established based on the “Min” column, then the duct
diameter should
also be sized according to the “Min” column.
If the “Max” column
or another value in-between was used than the duct must be sized according to the
“Max” column, or the adequate value in
-
between “Min” and “Max”.
If there is no in-
between value, use the “Max” value.
•
If in doubt, use the "Max" value.
For each dwelling
Recommended airflow
for each room
Air ducts diameter
for each room
cfm
l/s
in
mm
SUP
PLY
Rooms requiring a fresh air supply*
Min Max Min Max Min
Max
Min
Max
Each bedroom (one person)
10
20
5
10
5
5
125
125
Each bedroom (two persons)
20
30
10
15
5
6
125
150
Home office
10
20
5
10
5
5
125
125
Main lounging room (living room)
10
20
5
10
5
6
125
150
Each floor not already serviced by air supply
10
20
5
10
5
6
125
150
Basement if not already serviced by air supply
10
20
5
10
5
6
125
150
Optional rooms to be supplied with fresh air*
Dining room
10
20
5
10
5
6
125
150
Family room
10
20
5
10
5
6
125
150
Play room
10
20
5
10
5
6
125
150
Kitchen
(This will help the range hood work better).
10
20
5
10
5
6
125
150
Any other furnished room
10
20
5
10
5
5
125
125
EXT
RACTIO
N
Recommended rooms for stale air extraction*
Bathroom or shower
50
80
25
40
5
6
125
150
Restroom
10
20
5
10
5
5
125
125
Kitchen
(Not recommended. Use a range hood instead.)
(Minimum distance between the return grille and any cooking
surface must be 3 m (10 ft.)).
10
20
5
10
5
6
125
150
Laundry room
10
20
5
10
5
5
125
125
Basement
10
20
5
10
5
6
125
150
* Treat each room comprised in an open space as an individual room
Required fresh air supply
Write result
Main ducts
minimum diameter
cfm
l/s
cfm
l/s
in
mm
Total fresh air supply
1,2
Your
answer
Your
answer
≤
90
≤
40
6
150
1. Input this value into the microcontroller.
> 90 > 40
8
200
2. The total exhaust airflow must be identical
Table 2
–
Air ducts planning.
