High Temperature Roof Fans (RDM)

Designed to comply with the latest EU regulations for Ventilation units the new RDM range of roof extract fans from Vent-Axia are suitable for both general ventilation and kitchen ventilation with in-duct temperatures of up to 120°C.

Motors
High performance centrifugal impeller with backward curved blades directly fitted to a premium efficiency IE3 motor protected to
IP55. The motor is fitted with PTC Thermistors as standard and is designed for best operation through a frequency inverter with sine filters. Balanced statically and dynamically according to DIN ISO 1940. Meets the efficiency requirements of Regulation EU1253/2014 ErP Lot 6 for ventilation units.

Performance
The fan performance is tested in accordance with ISO 5801.

Electrical
All models are suitable for 380-415 / 3 / 50 electrical supply.

Sound
Sound measurements are made in accordance with DIN 45635-38. Inlet side is in accordance with ISO 5136 as an in-duct figure.

Discharge side is in accordance with DIN 45635-1 and BS848 part 2 as a free field figure.

Accessories
Flat roof upstand
Manufactured from galvanised sheet steel with sound absorbing and thermal lining.

Inclined roof upstand
Upstand for inclined roof made of aluminium sheet, provided with sound and thermal insulation, available in steps of 5 degrees from 5 to 45 degrees roof pitch - to be advised at time of order.

Intake flexible connection
Flanged flexible connection to prevent the transmission of vibration to other parts of the installation. Flange dimensions are in accordance with DIN 24 155 - 2.

Protection grid for intake
Use in installations with an open inlet.

Inlet silencer
The tubular inlet silencer has a square flange on the side nearest to the roof unit for bolting to the respective flat roof upstand. It slides inside the upstand, while the opposite end can take either additional ducting or an inlet cone.

The exterior skin is made of galvanised sheet steel, and the interior of galvanised perforated plate. The cavity between them is filled with nonflammable acoustic material.

There is no central core of material, so any pressure loss will be insignificant.

Stock Ref dB 63 125 250 500 1k 2k 4k 8k
475820 7 0 3 5 10 14 13 8 7
475821 8 2 4 6 12 16 14 10 8
475822 12 2 4 8.5 17 20 15 12 10
475823 13 3 5 9 17 21 15 12 10
475824 13 3 5 10 18 22 16 12 10

For full details please contact Technical Support 0344 856 0595.

Click here for technical information, within our Online Product Selector. After, select your required fan model from the list to display Performance, Sound, Dimensions and Electrical Data.

 

 

Raadpleeg de tab Downloads voor technische informatie

 

 

ESTIMATED RUNNING COSTS

Calculate estimated running costs for this product using the tool below.
For average costs*, leave the default values in place or enter your own figures in the boxes to recalculate.
Where a product has multi speeds, a typical installation has been used for the below calculations. *Running cost does not include the use of the heater on the heater model


pence
(Your current electricity cost in pence per hour. This will be listed on your electric bill)
hours
(The average number of hours per day fan to run in Trickle mode)
hours
(The average number of hours per day fan to run in Boost mode)

Based on the inputted figures, estimated running costs would be:

Overview

Designed to comply with the latest EU regulations for Ventilation units the new RDM range of roof extract fans from Vent-Axia are suitable for both general ventilation and kitchen ventilation with in-duct temperatures of up to 120°C.

Motors
High performance centrifugal impeller with backward curved blades directly fitted to a premium efficiency IE3 motor protected to
IP55. The motor is fitted with PTC Thermistors as standard and is designed for best operation through a frequency inverter with sine filters. Balanced statically and dynamically according to DIN ISO 1940. Meets the efficiency requirements of Regulation EU1253/2014 ErP Lot 6 for ventilation units.

Performance
The fan performance is tested in accordance with ISO 5801.

Electrical
All models are suitable for 380-415 / 3 / 50 electrical supply.

Sound
Sound measurements are made in accordance with DIN 45635-38. Inlet side is in accordance with ISO 5136 as an in-duct figure.

Discharge side is in accordance with DIN 45635-1 and BS848 part 2 as a free field figure.

Accessories
Flat roof upstand
Manufactured from galvanised sheet steel with sound absorbing and thermal lining.

Inclined roof upstand
Upstand for inclined roof made of aluminium sheet, provided with sound and thermal insulation, available in steps of 5 degrees from 5 to 45 degrees roof pitch - to be advised at time of order.

Intake flexible connection
Flanged flexible connection to prevent the transmission of vibration to other parts of the installation. Flange dimensions are in accordance with DIN 24 155 - 2.

Protection grid for intake
Use in installations with an open inlet.

Inlet silencer
The tubular inlet silencer has a square flange on the side nearest to the roof unit for bolting to the respective flat roof upstand. It slides inside the upstand, while the opposite end can take either additional ducting or an inlet cone.

The exterior skin is made of galvanised sheet steel, and the interior of galvanised perforated plate. The cavity between them is filled with nonflammable acoustic material.

There is no central core of material, so any pressure loss will be insignificant.

Stock Ref dB 63 125 250 500 1k 2k 4k 8k
475820 7 0 3 5 10 14 13 8 7
475821 8 2 4 6 12 16 14 10 8
475822 12 2 4 8.5 17 20 15 12 10
475823 13 3 5 9 17 21 15 12 10
475824 13 3 5 10 18 22 16 12 10

For full details please contact Technical Support 0344 856 0595.

Technical

Click here for technical information, within our Online Product Selector. After, select your required fan model from the list to display Performance, Sound, Dimensions and Electrical Data.

 

Downloads

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