Fans by Fantech Electronic Catalogue

P-11

2016

INSTALLATION DO’S AND DON’TS

Figure 4.2. - Volume control dampers

Don’t site volume control dampers or fittings too close to

attenuators as they can cause a dramatic increase in attenuator

pressure drop.

Allow for a settling duct between volume control dampers and

attenuators.

4.0 NOISE CONTROL

Figure 4.1. - Transitions

Abrupt transitions immediately adjacent to an attenuator will

cause the attenuator pressure drop to increase.

Ensure transitions close to attenuators are gradual or, better still,

remote.