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Vent-Axia

Centrifugal Roof fans - RBH

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Prices and stock levels correct at the time of printing (05/02/12 1:45)

Overview

Specially designed for use when high pressure characteristics are required. Centrifugal roof models are delivered on-site ready for installation, fully assembled including service isolator. The range consists of 9 sizes with duties from 0.248m /s to 4.5m /s (892m /h to 16200m /h) with high pressure development available up to 900 Pa making this range particularly suited for ducted applications.

The mounting plate is moulded with an integral fixed bellmouth to ensure optimum efficiency and precise alignment. The weather-cowl is also moulded to produce a smooth internal surface and a tough UV resistant finish. Colour: BS 10A07. Alternative colours available on request. Equally suitable for flat or inclined roofs, backward curve centrifugal roof models are suitable for kerb or purlin box mounting and feature a wide range of accessories for many different industrial applications.

Vent-Axia centrifugal roof fans are designed for either kerb or inclined fixing (max. angle 30°).

Motors

The Centrifugal roof range features a proven external rotor motor and backward curved aluminium impeller assembly selected for performance and non-overloading characteristics. The assembly is dynamically balanced to VDI 2060. The motors in this range are protected to IP44 according to BS EN 60529. Ball bearings are greased for life and are designed to run at any angle. Insulation is Class 'B' (from -30°C to +40°C). Manufacture is controlled to BS EN ISO 9001 standards.

Electrical

Single phase 220-240V Hz. Capacitor start and run. Three phase 380-415V 50Hz. A service isolator switch is provided for local isolation to meet COSHH requirements. The enclosure is protected to IP65 according to BS EN 60529, except on size 250 dia where a service switch is provided.

All motors are fitted with Standard Thermal Overload Protection (S.T.O.P), which for three phase fans should be wired into all controller circuits and into starter contactors. Most models are available with 4, 6 and 8 pole motors.

Dimensions


Fan Size a b c d Weight Kg
250 500 500 280 90 16
315/355 700 680 410 83 16/22
400/450 800 780 480 83 24/27
500/560 950 930 575 103 35/46
630/710 1230 1055 630 103 57/73



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Product Information

Features

At a Glance:

  • Specially designed for use when high pressure characteristics are required.
  • Features a proven external rotor motor and backward curved alumininium impeller assembly.
  • The unit is designed for either kerb or inclined fixing (max angle 30°). Manufacture controlled to BS EN ISO 9001.
  • Performance tested to BS 848 Parts 1 & 2.

FAQ's Answered:

  • Motor Insulation Class B
  • Maximum operating temperature 40°C
  • Standard Thermal Overload Protection
  • Bird guard
  • Speed controllable motors
  • 2 Year Guarantee

Vent-Axia are leading manufacturers and suppliers of heating, ventilation and air conditioning systems, both in the UK and around the world. For over 75 years, we have led the industry in air ventilation products, systems and services. Whatever your requirement, budget or setting, Vent-Axia can provide the solution you need. From extraction fans for the home to large commercial ventilation solutions, our wide HVAC range features a product for every air handling purpose.

Vent-Axia's popular Lo Carbon range combines all the style and durability you expect from a Vent-Axia product with even greater energy efficiency, helping you to make your property as eco friendly as possible. Together with the Lo Carbon range, our renewables range of heat pumps, demand energy recovery ventilation and heat recovery (HRV) and mechanical extract systems are also available to aid new sustainable building projects to adhere to the Code for Sustainable Homes.

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In addition to our ever-growing domestic and commercial ventilation ranges, Vent-Axia also supply air curtains, hand dryer products and fume handling/smoke fans. We can also support your air conditioning requirements.

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