Fans by Fantech Electronic Catalogue

2016

3.0 ROOF UNITS (Cont.)

Figure 3.5. - Prevailing winds

Mechanical roof ventilator units perform best if influence of prevailing wind is minimal.

Unit above ridge is exposed to crosswinds. Exhaust capacity

may be reduced due to back-pressure effects.

Roof unit relatively sheltered from prevailing winds suffers less

from back-pressure effects.

INSTALLATION DO’S AND DON’TS

P-10