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24. 02. 22. Document Number 671572
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
AVS
Installation Manual
4.0 MECHANICAL INSTALLATION
Installation must be completed by competent persons, in accordance
with good industry practice and should conform to all governing and
statutory bodies i.e. IEE, CIBSE, etc.
The units are supplied for installation into In-line ductwork (internal)
applications only. All ductwork connections must be airtight to prevent
loss of performance.
The unit has an external case side mounted control module / terminal
box and is supplied ready for connection into the electrical supply.
Typically the control is mounted on the side of the unit as standard
(AVS2-9).
The method of mounting used is the responsibility of the installer.
The
units can be mounted in any attitude
enabling alternative control
positions. Access to the blower for maintenance can still be achieved
for annual maintenance once orientation is changed, however if the
motor requires replacing, the unit will have to be lowered to ground
level if installed in non-standard configuration.
4.1 Umbilical Cord Kits (AVS1-8 Only)
As an option, an umbilical cord can be purchased for remote mounting
up to 1m away (Figure 5).
1m Umbilical Cord Kit Code: AVT-CK.
4.2 Surface Mounting Control Module (AVS1 Only)
The fan unit control module/terminal box is supplied loose for
mounting up to 1 metre away from main unit (Figure 4). The unit must
be mounted on a secure, vibration free vertical surface away from direct
heat sources or water spray.
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AVS1 Control Module
4.3 Surface Mounted Units
Utilising four matching anti-vibration (AV) mounting feet (Figure 1).
AV
mounts isolate the fan only, silencers / back draught dampers and
other "significant mass" accessories should form part of the fixed
ductwork after the flexible connection.
4.4 Units Suspended With Drop Rods
From the ceiling or in the ceiling void using four AV mounting feet
supplied, with access panel positioned for underside access (Figure 2 &
3).
4.5 Vertically Wall Mounted (Rigid) Units
Utilising the Aire-Volve Vertical Hanging Bracket kit that includes
wall hanging brackets and hinges (Figures 5 and 6). The unit case has
captive M8 nuts which can be used after removing the M8 ‘plugging’
screws. Units should always be positioned with sufficient space to allow
the access panel to extend forward.
Only suitable for topside and
underside detachable access panel units mounted indoors.
Aire-Volve Unit Size
Aire-Volve Vertical Hanging Bracket Kit
1
AVT1-VK
2
AVT2-VK
3
AVT3-VK
4
AVT4-VK
Aire-Volve Unit Size
Aire-Volve Vertical Hanging Bracket Kit
4L
AVT4L-VK
5
AVT5-VK
6
AVT6-VK
5
Typical Installation Of Vertically Wall Mounted
AVS-A(1-6) Unit Using Vertical Hanging Bracket Kit
6
Front Access Of Vertically Wall Mounted AVS-A(1-6)
Unit Using Vertical Hanging Bracket kit
4.6 Anti-Vibration (AV) Mounts
AV mounts should not be fitted to a fan/silencer assembly unless there
are flexible connectors fitted between the assembly and associated
duct work. AV mounts should be installed with the matched mounting
feet and positioned such that they carry an equal proportion of the
assembly weight. This is particularly important where fans and silencers
are installed on suspension rods. Suspension rods and fixing screws are
not supplied.
Resilient rubber anti-vibration mounting kits (NAV) are available,
the correct selection and type employed will depend on the accurate
calculation of the weight of the assembly to be supported.
The large round washers included with the NAV(2-5) are for fitting
above or below the resilient mounting as required to safeguard
the installation against break-up of, or damage to, a mounting. In
the event of a resilient mounting failure, the washer will support
the weight of the unit. Fans using size NAV 6 upwards require
supporting steelwork to be designed (by others) for suspended
applications.
AV mounts must only be subjected to compressional forces and
MUST NOT be used in a configuration that places these parts under
tension or shear force.
