NuAire AxTan AXH80DG-4LN User manual

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Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk 04. 04. 23. Document Number 672064
AxTân
Fire-Rated Axial Skid Assembly
Installation Manual
1.0 SAFETY INFORMATION
• The provision of the electrical supply and the connection of the unit to the electrical
supply must be carried out by a qualified electrician in accordance with latest edition of
the wiring regulations.
• Isolate from power supply before removing any covers. During installation or
maintenance ensure all covers are fitted before switching on the mains supply.
• All-pole disconnection from the mains as shown in the wiring diagram must be
incorporated within the fixed wiring and shall have a minimum contact separation of
3mm in accordance with latest edition of the wiring regulations.
• This unit must be earthed.
• Ducting must be securely fixed with screws to the spigot to prevent access to live
parts. Duct runs terminating close to the fan must be adequately protected by suitable
guards.
• Precautions must be taken to avoid the back-flow of gases into the room from the open
flue of gas or other fuel-burning appliances.
• This appliance should not be used by children or persons with reduced physical,
sensory or mental capabilities or lack of experience and knowledge, unless they have
been given supervision or instruction concerning the safe use of the appliance by a
person responsible for their safety. Children shall not play with the appliance. Cleaning
and user maintenance shall not be carried out by children.
• Other relevant safety information including that related to PPE, transportation,
installation, maintenance and operation can be found in the following instructions.
1.1 Hazard Symbols
GENERAL WARNING
Signifies a general warning regarding hazard specified by supplementary
information.
ELECTRIC SHOCK
This unit must be completely electrically isolated before any panels are
removed. Check mains supply and control connections.
ROTATING PARTS
This unit contains fast moving rotational parts which may start automatically. It
is the sole responsibility of the installer to adequately guard these components.
REFER TO INSTRUCTION MANUAL
Read and understand the installation and maintenance manual before
installing, operating or maintaining this product.

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Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk 04. 04. 23. Document Number 672064
AXTÂNInstallation Manual
1.2 Important Information
This manual contains important information on the safe and
appropriate assembly, transport, commissioning, operation,
maintenance, disassembly and simple troubleshooting of the
product.
While the product has been manufactured according to the
accepted rules of current technology, there is still a danger
of personal injury or damage to equipment if the following
general safety instructions and the warnings contained in these
instructions are not complied with.
•Read these instructions completely and thoroughly before
working with the product.
•Keep these instructions in a location where they are
accessible to all users at all times.
•Always include the operating instructions when you pass
the product on to third parties.
1.3 Personal Protective Equipment
The following minimum Personal Protective Equipment (PPE) is
recommended when interacting with Nuaire product:
•Protective Steel Toed Shoes - when handling heavy objects.
•Full Finger Gloves (Marigold PU800 or equivalent) - when
handling sheet metal components.
•Semi Fingerless Gloves (Marigold PU3000 3DO or
equivalent) - when conducting light work on the unit
requiring tactile dexterity.
•Safety Glasses - when conducting any cleaning/cutting
operation or exchanging filters.
•Reusable Half Mask Respirators - when replacing
filters which have been in contact with normal room or
environmental air.
Nuaire would always recommend a site specific risk assessment
by a competent person to determine if any additional PPE is
required.
2.0 INTRODUCTION
Mechanically ventilated smoke shafts are now a common
solution to extract smoke from high-rise properties to protect
common escape routes and maintain tenable conditions for
fire-fighting access during a fire. These systems are becoming
increasingly popular because they take up less space compared
to natural ventilation systems. In a natural shaft, the head
is terminated with an automatic opening ventilator, where
mechanical smoke shafts use extract fans, which are mounted on
the roof and connected to the riser with sheet metal ducting.
The fans are available for three phase operation only.
The units are designed for:
•S1 DUTY Day to day operation and in the event of fire a one
o emergency use.
•S2 DUTY One o emergency extract only.
The range has been designed for ease of installation onto new
or existing buildings and are EN12101-3 compliant, refer to EC
certificate of conformity, 2797-CPR-672476.
1 AxTân Unit Code: AXH80DG-4LA
2.1 Code Description
1 2 3 4 - 5 6 7 8
AX H80 DG -4 L A C4
1. Axial Type AX = Long case, foot mounted
2. Orientation H = Horizontal
V = Vertical
3. Impeller Size (cm) 80
4. Impeller blade Contact Nuaire
reference
5. Motor pole 2, 4, 6 or 8
6. Blade angle Contact Nuaire
reference
7. Attenuator location B = Both
A = Atmosphere side
R = Room Side
N - No attenuator fitted
8. Environment Blank = C3 or below
C4 = Coastal
3.0 DELIVERY & HANDLING
All equipment is inspected prior to despatch and leaves the
factory in good condition. Upon receipt of the equipment an
inspection should be conducted and any damage indicated on
the delivery note.
Particulars of damage and/or incomplete delivery should be
endorsed by the driver delivering the goods before ooading
by the purchaser. No responsibility will be accepted for damage
sustained during the ooading from the vehicle or on the site
thereafter. All claims for damage and/or incomplete delivery
must be reported to Nuaire within two days of receipt of the
equipment.
The fan impeller is carefully balanced and centralised in the fan
case, it is therefore essential that great care is exercised when
handling the unit. Check the weight on the rating plate details
before attempting to lift.

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Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk 04. 04. 23. Document Number 672064
AXTÂNInstallation Manual
Lifting points are shown in Figure 2 and always use a spreader
when lifting as shown in Figure 3 so the lifting component is
clear of the unit.
Lifting Points
2 Lifting Points
4.0 DIMENSIONS
AIRFLOW
FORM B
(1810)
85 600 350
2680
600
1374 NOM.
540
922 NOM.
(1256)
1490
936
1030 1546
87 1002
1000
2680
160
4 AXH80DG-4LN Dimensions
Lifting
Spreader
Beam
Lifting
Component
Ensure lifting
compoment is
clear of unit &
terminal box
3 Lifting Unit Using a Spreader Beam

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Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk 04. 04. 23. Document Number 672064
AXTÂNInstallation Manual
AIRFLOW
FORM B
85
3483
944
2283
800 600 600 350 1000
2339
1398 NOM.
922 NOM.
1030
540
(1256)
1012
2603
84
3483
160
5 AXH80DG-4LR Dimensions
AIRFLOW
FORM B
85 600 600 800 350
3470
2273
(2593)
916
(1256)
1398 NOM.
1009
2329
97
922 NOM.
1030
540
1000
3470
160
6 AXH80DG-4LA Dimensions

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Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk 04. 04. 23. Document Number 672064
AXTÂNInstallation Manual
AIRFLOW
FORM B
85.0 800.0 600.0 600.0 800.0 350.0
922 NOM.
1398 NOM.
540.0
4162.0
1000.0
1030.0 73.0 3166.0 996.0
385.0
1924.0
936.0
1256.0
1022.0
930.0
2244.0
7 AXH80DG-4LB Dimensions
5.0 INSTALLATION
Installation must be carried out by competent personnel,
in accordance with good industry practice, the appropriate
authority and in conformance with all statutory and governing
regulations e.g. IEE, CIBSE, COSHH, HVCA, ATEX, BSI & EN
standards etc.
Before commencing installation check that all material, including
mounting feet are available to complete the installation. Every
unit is tested and serialised at works and a test certificate
produced, the details recorded on the fan side rating plate
should also be referred to before handling and installation.
Any damages or deviations should be immediately reported to
the seller/supplier/agent quoting the order and product details
from the product rating plate.
5.1 Mechanical Installation
5.1.1 Base Feet
Initial installation requires the base mounting feet be fitted. The
base feet are supplied separately and should be fitted to the
assembly skid prior to final positioning. See Figure 8 for foot
installation.
Tighten & clamp the
top/bottom locknut &
washer to base skid base.
Height can be adjusted by
moving nut & washer up &
down along leg adjuster
Top Locknut
& Washer
Bottom Locknut
& Washer
Fit Leg Adjuster
through Skid Base
8 Base Foot Installation
Do not alter the blade angle of impeller without the
permission of Nuaire, doing so may invalidate your warranty.
Isolation - Before commencing work, make sure that any
electrical connections are isolated from the mains supply.
The list below states the main characteristics of the AXUS axial
fan range certified for operation at 300°C or 2 hours.
The unit:
•Is thermally uninsulated.
•May be used for smoke reservoir and non-smoke reservoir
applications.
•Is dual purpose i.e. suitable for day-to-day operation and
one-o emergency use.
•Flow A, motor-impeller, and Flow B, impeller-motor
operation.

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Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk 04. 04. 23. Document Number 672064
AXTÂNInstallation Manual
5.1.2 General Notes
Rotate the fan impeller by hand to ensure free and smooth
rotation and that no transit or handling damage has occurred,
observe the direction of flow/direction of rotation arrow.
Ensure the external termination box is accessible to the
electrician.
In order to ensure performance is as stated, a minimum distance
of twice the fan diameter is required between the appliance and
any bends in the ductwork.
5.1.3 Transport Brackets
Care must be taken when installing assembled axial units and
with attenuators fitted. These units are fitted with transport
brackets for extra stability when in transport and handling.
Once the unit has been finally positioned these brackets shown
(Figure 9) need to be removed prior to unit connection.
Remove transport brackets
xed either side of axial feet
9 Base Foot Installation
5.1.4 Height Adjustment
When the fan is oered up to the ducted system, check the unit
is aligned correctly. If any adjustment is required, this can be do
with the base feet as shown (Figure 10).
Height of unit can be adjusted along
the length of the foot adjuster
10 Base Height Adjustment
5.2 Electrical Installation
5.2.1 Motors
Motors are totally enclosed and protected to IP55 (Dust and low
pressure water jets). Motors comply with BS5000, EN600034
and IEC34-1.
The motors have sealed-for-life ball bearings in units up to
132mm frame size. For frame sizes of 160mm and above motors
are of the regreaseable type. Enclosures are to IP55 with class H
insulation. Motors are tested in accordance with EN12101-3.
Please note the requirements for maintenance of the motor.
Failure to comply with the recommendations will invalidate any
warranty claim.
5.2.2 Wiring
Electrical supply wiring connection is to an externally mounted
terminal box on the case exterior. The box is pre-wired to the
motor with heat-resisting cable.
5.2.3 Connection Details
Check that the voltage full load and starting current on the fan
rating label is suitable for your supply. Units for external use
require weatherproof conduit and glands.
Single speed motors below 4kW are suitable for Direct On Line
starting only.
Single speed motors 4kW and above are supplied with Star /
Delta capability but Direct On Line starting is recommended as
the simplest means for emergency equipment operation.
Two speed motors are supplied TAP or PAM single winding or
Dual Wound. All two speed types are designed for Direct On
Line starting on both speeds only unless otherwise specified.
Earthing of the axial motor is done via the axial case, where the
case is earthed to the main axial skid. It is essential that the main
axial skid is earthed prior to connecting the supply.
5.3 Wiring Diagrams
L1 L2 L3
400V 3 phase 50Hz supply
380V 3 phase 60Hz supply
460V 3 phase 60Hz supply
Fan
unit
11 Wiring - Single Speed (3kW and below) - Three Phase
460V 3 phase 60Hz supply
380V 3 phase 60Hz supply
400V 3 phase 50Hz supply
L1
L2
L3
STAR
L1 - U1
L2 - V1
L3 - W1
Link W2, U2, V2
U1
V1
W1
W2
U2
V2
12 Wiring - Star D.O.L Starting (3kW) and below) - Three Phase

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Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk 04. 04. 23. Document Number 672064
AXTÂNInstallation Manual
U1
V1
W1
W2
U2
V2
DELTA
L1 - U1 - W2
L2 - V1 - U2
L3 - W1 - V2
Note:
For all D.O.L. (Direct On Line)
operation or Inverter type Speed Control
wire in DELTA
460V 3 phase 60Hz supply
380V 3 phase 60Hz supply
400V 3 phase 50Hz supply
13 Wiring - Star/Delta Starter (4kW and above) - Three Phase
1U
1V
1W
2U
2V
2W
NOTE
HIGH SPEED
Supply: 2U 2V 2W
LINK: 1U 1V 1W
LOW SPEED
Supply: 1U 1V 1W
460V 3 phase 60Hz supply
380V 3 phase 60Hz supply
400V 3 phase 50Hz supply
Motor Terminal Box
/ Isolator
14 Wiring - Two Speed - TAP/PAM Wound Motor - D.O.L Starting
(Both speeds) - Three Phase
L1
L2
Low
Speed
High
Speed
L3
L1
L2
L3
460V 3 phase 60Hz supply
380V 3 phase 60Hz supply
400V 3 phase 50Hz supply
1U
1V
1W
2U
2V
2W
Motor Terminal Box
/ Isolator
15 Wiring - Two Speed - Dual Wound Motor D.O.L Starting
(Both Speeds) - Three Phase
6.0 Controls
6.1 Electronic Speed Control - Three Phase
Screened cable must be used, maximum length should be 30
meters. Consult our Technical Department if you wish to use
longer leads.
Inverters are configured to suit fans and control applications as
described on the Customer Order, free of charge.
L1 L2 L3
L1 PE/ N/L3 L/L2 W U V
400V 3 phase 50Hz supply
380V 3 phase 60Hz supply
460V 3 phase 60Hz supply
3 Phase only
INVERTER SPEED CONTROL
Connections
to motor
3 Phase input
Motor
3 Phase
16 Wiring - Electronic Speed Control - Three Phase
6.2 Impeller Rotation
Ensure that the impeller rotation follows the label arrow indicator
on the casing. Should the direction be incorrect on three phase
units, reverse any two of the supply leads. Care should be taken
to set correct rotation as incorrect rotation may result in damage
to the motor. Equipment should be run for approx. 30 minutes
to ensure correct operation. If any fault occurs, the equipment
should be switched o. Do not re-start until the fault has been
rectified.
For good EMC engineering practice, any sensor cables or
switched live cables should not be placed within 50mm of
other cables or on the same metal cable tray as other cables.
For specialist connections not shown always refer to the
wiring diagram supplied with the unit. In the event of query or
uncertainty contact Nuaire directly before any connection is
made.
6.3 Optional Inverter Control for F300/2 Axus Range
High temperature Axus fans F300 Series have been tested with
frequency converters to BS EN 12101-3:2015, and may be used
with suitable frequency converters under emergency fire mode
conditions providing they are operated at full speed, selected to
meet the parameters described in the table below and the fire
mode on the inverter is engaged.
Table 1
Test parameters use in/derived from test series - ref: C.6.2 (n)
Test Parameter Result
Inverter Type PWM
Filters Fitted NO
Switching Frequency 4 kHz
Ramp Up Time 30 Seconds
Maximum Peak Voltage (Vmax) 156
Maximum Peak to Peak Voltage (Vp) 436
Maximum Voltage Rise du/dt = 0.8Vp/dt (V/nS) 1.659

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Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk 04. 04. 23. Document Number 672064
AXTÂNInstallation Manual
7.0 COMMISSIONING
Axial fan 300°C for 2 hours - Motors for Smoke Extract Fans
Exposure temperature/time: 300°C for 2 hours
These motors are used to provide a safety function for people
in the event of fire in public premises or in the home. They are
therefore subject to strict constraints concerning their operating
and maintenance.
7.1 Operating Constraints
1. Check on the nameplate that the selected motor corresponds
to the maximum exposure temperature and duration.
2. After the unit has been subjected to one emergency duty
operation it must be replaced.
3. With variable speed control. Ensure that the maximum
speed never exceeds the speed of the motor supplied by
the mains and that the delivered power corresponds to the
previous definitions. The motor should be equipped with
PTC thermistors connected to the protection system during
S1 duty and switched o during S2 duty (operation during an
emergency).
These qualifications ensure the qualification of the driven fan by
the manufacturer.
8.0 MAINTENANCE
8.1 Maintenance Constraints
Regular service visits must be performed on the installation
at least every 6 months, incorporating the following checks:
1. Checking the insulation resistance (R>100 MOhms, 500V DC)
•If the drain holes are blocked, open them to eliminate any
accumulated condensation.
•If R<100 MOhms, dry the stator in an oven and check the
insulation resistance. If the fault persists, replace the stator.
•The stator must be replaced 5 years after installation or after
20,000 hours of operation.
2. Cooling check
•Ensure there is no dust or grease in the entire ventilation
circuit (housing fins, motor cover/fan if fitted driven fan).
•Ensure the motor runs normally when switched on for a few
minutes.
3. Bearing check (C3 or C4 play)
•Run the motor during each maintenance visit. When the
motor is cold, a high level of noise is caused by the texture
of the grease. This does not indicate a bearing fault.
S2 duty only:
The bearings must be replaced by an identical type every 5
years. Ensure the motor runs normally when switched on for a
few minutes.
S1 duty and Emergency in S2 duty:
1. Permanently greased bearings.
300°C / 400°C range; replace on 2 pole motors after 10,000
hours of operation and on motors with 4 poles or more after
20,000 hours.
2. Regreaseable bearings`
The information on the motor nameplates must be strictly
respected (grease quantity, grease quality and re-greasing
frequency). The bearings must be replaced after 20,000 hours of
operation.
8.2 The Run/Standby Axial fan assembly
If the axial unit is disassembled at any time it is critical that it is
reassembled in the correct orientation. Ensure the first stage fan
is positioned in front of the second stage in relation to direction
of airflow. Ensure each fan is rotating in the correct direction of
rotation as per unit label.
8.3 Back draught Damper
The back draught damper is a gravity operated damper
to prevent back draughts to the smoke shaft. These are
manufactured in heavy gauge galvanised steel and are fitted
with a pair of bolted flanges. If disassembled it is important to
reassemble with the doors opening in the direction of airflow.
8.4 Flexible High Temperature Connectors
Circular without flanges, flexible duct material is flame-proof
resistant to heat up to 130°C, chemicals, ozone, oil and grease.
The material is airtight, waterproof and tested to BS476 Part 7.
Secure to flange and ductwork with the clamping bands
provided, ensure that duct misalignment is not corrected by
the flexible connector and that it is neither too tight nor too
slack. Either condition can contribute to noise and impair fan
performance.
8.5 Maintenance Schedule
It is important that maintenance checks are recorded and that the
schedule is always adhered to. In all cases, the previous report should
be referred to. When maintaining a high temperature fan, particular
attention should be given to the Smoke Control Association & Fan
Manufacturers’ Association guide to smoke extract fan maintenance
available at smokecontrol.org.uk.
8.5.1 Routine Maintenance
•Clean all areas of unit of dust or fibres and treat any areas of
corrosion, including lifting lugs / eye bolts.
•Check all areas and ensure no damage is present on units
i.e. impeller cracked, fan cowl bent, foot cracked etc.
•Check all access doors and bolted flange connections for
leakage and if necessary bolts should be adjusted and
any replacement gasket materials should be replaced as
required.
•Check insulation resistance is adequate, it is imperative this
is checked after any prolonged shut down period.
•Check all fasteners and tighten if necessary.
•Ensure no excessive vibration.
As unserviced shaft seals and bearings can create a point of failure due
to lack of use, it is imperative that fans are “run tested” regularly as
part of the overall smoke control system tests, ideally on a weekly basis
during normal operation. A record should be kept of each test, along
with the date and time that it was conducted. The record should be
signed by a competent operative.
8.5.2 Every 3 Months
Check sealing of motor and gland plate is in good condition.

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Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk 04. 04. 23. Document Number 672064
AXTÂNInstallation Manual
8.5.3 Annually
•Thoroughly inspect the unit and its components for
corrosion, acting immediately to treat/restore any damaged
areas.
•Check all cables are in good condition and all electrical
terminals within the unit are tight.
•Check all earth connections.
•Check all cables are in good condition.
•Check bearing condition and if necessary re-grease
bearings for 160 motor frames and larger.
8.6 Motor Repair
Due to unit certification EN12101-3 and in compliance with the
construction products directive, the motor must be returned to the
motor manufacturer for replacement.
9.0 WARRANTY
The 3 year warranty starts from the day of delivery and includes
parts and labour for the first year. The remaining period covers
replacement parts only.
This warranty is void if the equipment is modified without
authorisation, is incorrectly applied, misused, disassembled, or
not installed, commissioned and maintained in accordance with
the details contained in this manual and general good practice.
The product warranty applies to the UK mainland and in
accordance with Clause 14 of our Conditions of Sale. Customers
purchasing from outside of the UK should contact Nuaire
International Sales oce for further details.
Failure to maintain the unit as recommended will invalidate
the warranty.
10.0 END-OF-LIFE AND RECYCLING
Ensure that Nuaire product is made safe from any electrical /
water / refrigerant supplies before dismantling commences.
This work should only be undertaken by a qualified person in
accordance with local authority regulations and guidelines,
taking into account all site based risks.
Where possible Nuaire use components which can be largely
recycled when the product reaches its end-of-life:
•Fans, motors, controls, actuators, cabling and other electrical
components can be segregated into WEEE recycling
streams.
•Sheet metal parts and other metallic items can be
segregated and fully recycled.
•Cardboard packaging, wood, used filters and other paper
components can be largely recycled or fully processed in
energy from waste centres.
•Remaining items can be further segregated for energy from
waste centres or, as a last resort, sent to landfill. Please
call After Sales Support for further information on items not
listed above. Ensure that Nuaire product is made safe from
any electrical supplies before dismantling commences. This
work should only be undertaken by a qualified person in
accordance with local authority regulations and guidelines,
taking into account all site based risks.
11.0 AFTER SALES AND REPLACEMENT
PARTS
For technical assistance or further product information, including
spare parts and replacement components, please contact the
After Sales Department.
If ordering spares please quote the serial number of the unit
together with the part number, if the part number is not known
please give a full description of the part required. The serial
number will be found on the identification plate attached to the
unit casing.
Repair and replacement of the defined critical components shall
only be carried out by a Nuaire authorized representative. These
fans are certified by a notified body, the substitution of a critical
component with an alternative version of this component, must
be approved by the notified body.
Telephone [phone]
[e-mail]
Technical or commercial considerations may, from time to
time, make it necessary to alter the design, performance and
dimensions of equipment and the right is reserved to make such
changes without prior notice.

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Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk 04. 04. 23. Document Number 672064
AXTÂNInstallation Manual
NOTES

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Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk 04. 04. 23. Document Number 672064
AXTÂNInstallation Manual
NOTES

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Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk 04. 04. 23. Document Number 672064
AXTÂNInstallation Manual
NOTES