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24. 02. 22. Document Number 671572
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
AVS
Installation Manual
4.9 Fitting Matched Silencers
Ensure that the attenuator pods are in the correct orientation
(Figure 16).
To change orientation of attenuator pod just roll silencer
over 180° before fitting and use fixing brackets.
Correctly align fixing brackets halves (Figure 17) and assemble using M8
cap head bolt and nut supplied with bracket. Tighten bolts to ensure a
full seal between silencer and unit is achieved (Figure 18).
Airflow
Fan unit outlet
Fan unit inlet
Attenuator inlet
pod configuration
Attenuator outlet
pod configuration
Airflow
16
Typical Side Section View Of Outlet Silencer, Floor Mounted Unit And Inlet Silencer
17
Silencer Alignment Brackets
18
Installed AVS Silencer
4.10 AVSCP Constant Pressure Range
Ecosmart constant pressure extract fans are supplied to control the
static pressure at the fan inlet.
This set up is suitable for the majority of applications. However, when
ancillaries with high pressure losses are fitted to the fan’s inlet side, the
low pressure tapping needs to be moved from the fan chamber to a
location upstream of the ancillaries (Figure 19).
Failure to do this will
result in excessive pressure being applied to the dampers at the
rooms when the system is running in trickle mode.
19
Constant Pressure Arrangement
Riser
Ancillaries e.g.
Silencer, Filter,
Heat Recovery
Unit
Riser
Inlet
Pressure
Branch
Balancing
Damper
Branch
Balancing
Damper
Extract Fan
To atmosphere
High Low
Pressure
Sensor
Flexible tubing
New Pressure Tapping
Airflow
Airflow
