25
4. How to Use
Wind speed control
Discharge wind speed adjustment procedure
①
Measure the wind speed at the opening.
Start the exhaust blower with the ventilator operation key, and fully open the
windowpane. Then, measure the wind speed at the center of each segment, which is
derived by dividing the opening area (of windowpane) by 16
*1
as shown in Fig.4-2, with
an anemometer.
Fig 4-2
*1 For applications which must comply with “Ordinance on Prevention of Organic Solvent
Poisoning” and “Ordinance on Prevention of Hazards Due to Specified Chemical
Substances”, the 16-division measurement is mandatory. On the other hand, for
applications other than above, the wind speed at the center of each segment which is
obtained by dividing the opening area (of windowpane) in the half open position by 8 is
measured.
②
Calculate the average value of 16 measurements in accordance with the formula shown
below, and compare the value with the standard discharge air quantity for applicable
product type (P. 40,
“Specifications”). If the values differ, align them by adjusting the
damper handle at the overhead discharge air duct.
Q
A V
60
[
Formula 1
]
Q: Wind quantity [m
3
/min]
A: Opening area [m
2
]
V: Wind velocity [m/s]