04. 02. 20. Document Number 671835
3
Nuaire |
Western Industrial Estate
|
Caerphilly
|
CF83 1NA
|
nuaire.co.uk
SQFT
Installation Manual
AV mounts available
as an ancillary item
Mounting feet
(supplied).
FLOW
FLOW
Mounting feet
(supplied).
Support beam
AV Mounts
Flexible
connector
Dampers
Fan 1
L
N
230V 1 phase 50 Hz only
Mains supply via local isolator (not shown)
X L N
Fan 2
L
X
N
Auto
change-over
control
(by others)
W1 V1
U1
W2 V2 U2
Fan 1
Fan 2
W1
U1
V1
V2
W2
U2
L1
L2
L3
Auto
control
change-over
(by others)
460V 3 phase 60 Hz supply
400V 3 phase 50 Hz supply
380V 3 phase 60 Hz supply
Mains supply via local isolator (not shown)
2
3
4
5
Horizontal Discharge - Mounting Feet (Supplied) Supported Via
A.V. Mounts
Vertical Discharge - Mounted On Support Beam Via A.V. Mounts
Wiring - Single Phase - Single Speed
Wiring - Three Phase (3kW and Below) - Single Speed
The ducting must be the same dimension as the fan for at least 1m
at the discharge of the fan before any transition. This is to allow the
free movement of the dampers and to minimise pressure losses.
We recommend the use of anti-vibration mounts to minimise the
transmission of vibration into the building structure.
Rotate the fan impeller by hand to ensure free and smooth rotation and
that no handling or transit damage has occurred, observe the direction
of flow/direction of rotation arrow and ensure that:
•
All optional accessories such as support brackets, attenuators,
guards, flexible connectors etc. are assembled to the fan.
•
Support brackets are fitted appropriate for the installed
attitude - vertical or horizontal.
•
When offering the fan to the ducted system that both inlet
and outlet connections are perfectly aligned.
It is advisable to fit flexible connectors on either side of the fan unless
there is an open-ended inlet or discharge and the fan should be
supported on AV mounts. The A.V.s should be levelled off to maximise
isolation and the flexible connectors correctly aligned with the fan at
the correct tension.
IMPORTANT
A.V. mounts isolate the fan only. Silencers / backdraught
dampers and other "significant mass" accessories should form
part of the fixed ductwork after the flexible connection.
4.2 Electrical installation
All installation work must be planned and carried out by consideration
all relevant regulations including CDM, health and safety and wiring
regulations.
Ensure the electrical supply is suitable for the fan and is suitably
protected by correctly selected fuses or MCB.
For 3 phase units, the electrical connections are made directly onto the
terminal boxes of the motors.
For single phase units, the electrical connections are made at
termination boxes at the motor mounting brackets.
Note that 3 phase motors up to 3kW (inclusive) must be wired in STAR.
Motors of 4kW and above must have DELTA as the final connection
arrangement.
4.3 Electrical installation - Motors
Motors are totally enclosed and protected to IP55 (Dust and low
pressure water jets).
Please note the requirements for maintenance of the motor. Failure to
comply with regulations will invalidate any warranty claim.
4.4 Wiring
These units are not supplied with any control or isolators, their
selection and provision is the responsibility of the specifier/contractor.
IMPORTANT
When the unit is operated in emergency mode smoke extract
operation - all controls must be bypassed.