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04. 02. 20. Document Number  671712

2

Nuaire | 

Western Industrial Estate 

Caerphilly 

CF83 1NA 

|

 

nuaire.co.uk

SVT28

Installation 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

The Nuaire SVT28 impulse unit comprises a high temperature axial fan 
with specially designed inlet and outlet attenuators which, along with 
the fan unit, are encased in an Aluzinc acoustic enclosure.

The Nuaire SVT28 unit comprising fan/motor assembly, and inlet & 
outlet silencers shall be certified for high temperature operation at 
400°C for 2 hours, the range shall have been type tested to EN12101-3.

The units shall be either 2 speed or inverter driven providing, low 
speed for day to day environmental ventilation and one off operation 
for emergency ventilation (S1 duty). They shall also be suitable for 
reversible operation.

Fully reversible options (i.e. similar duty in both airflow directions) are 
available, please contact Nuaire for details.

The unit shall have a unique mounting bracket, which shall enable the 
bracket to be positioned as a “first fix” component

with the unit being fitted as a “second fix” component, avoiding 
possible mechanical damage.

The Nuaire SVT28 unit shall have inlet guards for safety purposes and 
also to prevent debris being pulled through the fan.

It also has a specially designed airflow deflector to direct the jet stream 
from the fan at the required angle sufficient to overcome the natural 
buoyancy effect of the smoke (Section 4.3).

EN12101-3 compliant, refer to EC certificate of conformity,  
0086-CPR-672476.

2.1 Code Description:

SVT28 - 1 A G

     |          |  |  |

     1         2 3 4

1. Range:   

 

Impulse Axial Fan, 400°C for 2 hrs

2. Case Size:  

 

1 or 2

3. Impeller Blade Angle: 

A, B, C, D or E

3. Electrical Motor Details: 

No Suffix = 400V / 50Hz 

 

 

 

G = 460V / 60Hz 

 

 

 

J = 460V / 60Hz

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 made 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 offloading by the purchaser. 

No responsibility will be accepted for damage sustained during the 
offloading 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.

Always handle the units carefully to avoid damage and distortion. If 
mechanical aids are used to lift the unit, spreaders should be employed 
and positioned so as to prevent the slings, webbing etc. making contact 
with the casing.

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 regulations i.e. IEE, CIBSE, etc. and EN standards etc.

Before commencing installation check that all material, including 
mounting feet and optional ancillaries are available to complete the 
work. Every unit is tested and serialised at works and a test certificate 
produced, the details are also recorded on the fan side rating plate 
which should also be referred to before handling and installation. Any 
damage or deviations should be immediately reported to the seller /
supplier / agent quoting the order and rating plate details.

4.1 Fixing Support Bracket to Ceiling

The support bracket is included with the unit. Using the four slots in 
the top side of the bracket attach to the ceiling ensuring that it is firmly 
fixed and able to take the weight (100kg) of the SVT28 unit.

Unit Lifting

Summary of Contents for SVT28 Series

Page 1: ...y covers During installation 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...

Page 2: ...unit shall have a unique mounting bracket which shall enable the bracket to be positioned as a first fix component with the unit being fitted as a second fix component avoiding possible mechanical damage The Nuaire SVT28 unit shall have inlet guards for safety purposes and also to prevent debris being pulled through the fan It also has a specially designed airflow deflector to direct the jet strea...

Page 3: ... side of the bracket and unit C B A Terminal Box 55mm To adjust deflector blade A To adjust deflector blade B 2 3 5 4 Fixing Support Bracket Fixing Unit to Support Bracket Unit Dimensions Adjusting Deflector Blades 4 3 Adjusting Deflector Blades The Deflector blades are factory set for horizontal discharge default setting but can be adjusted for downward deflection using the following procedure 1 ...

Page 4: ... 30 minutes to ensure correct operation If any fault occurs the equipment should be switched off Do not re start until the fault has been rectified 7 0 SPECIFIC COMMISSIONING AND SERVICING REQUIREMENTS Motors for Smoke Extract Fans Exposure temperature time 300 C for 2 hours 400 C for 2 hours These motors are used to provide a SAFETY FUNCTION for people in the event of fire in public premises or i...

Page 5: ...his 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 office for further details Failure to maintain the unit as recommended will invalidate the warranty 10 0 END OF LIFE AND RECYCLING Where possible Nuaire use components wh...

Page 6: ...04 02 20 Document Number 671712 6 Nuaire Western Industrial Estate Caerphilly CF83 1NA nuaire co uk NOTES ...

Page 7: ...04 02 20 Document Number 671712 7 Nuaire Western Industrial Estate Caerphilly CF83 1NA nuaire co uk NOTES 7 ...

Page 8: ...tem components must have separate provision for support 4 3 Flanges and connection spigots are provided for the purpose of joining to duct work systems They must not be used to support the ductwork 4 4 In the event of RF interference the fan may increase in speed or make high pitched noises This is normal and will have no adverse effect on the fan The speed and noise will return to normal once the...

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