Fans by Fantech Electronic Catalogue

P-19

2016

INSTALLATION DO’S AND DON’TS

Don't allow high velocity air to pass through grilles.

Do ensure velocities through supply and exhaust air grilles are

low by increasing the grille size or number of grilles.

Size ductwork for constant static pressure to each grille, thus

eliminating or minimising the need for balancing damper

adjustment (which can generate excessive noise).

4.0 NOISE CONTROL (Cont.)

Figure 4.17. - When noise generated by grilles can cause a problem