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Commercial Kitchen Ventilation


The requirements placed on kitchen ventilation systems are tighter than ever


before with catering businesses demanding higher filtration levels to cope with the grease laden environment and longer duct runs to aid installation.


For this reason is it important for wholesalers


to stock robust reliable kitchen fans that will not fail in high temperatures. Kitchen fans need to feature motors designed and tested for operation at elevated temperatures (70°C or higher) whilst being operated at a speed lower than its maximum. If a fan is not manufactured specifically for this environment the fan’s motor is likely to fail prematurely due to overheating. Luckily, ventilation manufacturers have been working hard to improve commercial kitchen fan efficiency while ensuring they are robust enough for challenging kitchen conditions. Vent-Axia’s innovative


EKF Kitchen Box Fan Range was the first fan to adopt energy efficient long-life EC (Electronically Commutated Permanent Magnet) motors for a high temperature commercial kitchen application. This marks a significant development for kitchen fan evolution since typically kitchen fans use AC motors to cope with the elevated temperatures experienced in commercial kitchens which do not offer the same high efficiency.


High temperatures EC motors are regularly used in low temperature applications to improve the energy efficiency of fans but they have not traditionally been compatible with high temperature applications. However, the clever design of this new breed


of kitchen fan features an external rotor motor with a shaft out design to drive the impeller. This means that the motor is positioned outside the grease laden airstream which keeps it cooler and cleaner allowing the hospitality sector to benefit from the energy efficiency of an EC motor in a hot kitchen environment; up to 120°C continuous in duct temperature. Additional safety features ensure that if the


temperature goes beyond this maximum and the fan’s motor becomes hot, it will slow down


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to prevent damage to the electronics. EC motors also have the advantage of a longer life than the AC equivalent as their high efficiency means less stress and wear.


In conjunction with the EC motors these


features reduce the Kitchen Box Fan’s energy and running costs by up to 44% when compared to AC motor fans with a transformer speed control. This means kitchen operators can expect a return on the extra investment required to capitalise on this new technology in as little as 12 months – great news for wholesalers to pass onto electrical contractors.


Higher filtration levels With indoor air quality a hot topic, today the requirements placed on kitchen ventilation systems are tighter than ever before with catering businesses demanding higher filtration levels to cope with the grease laden environment and longer duct runs to aid installation. With restricted space, kitchen installations can often prove tricky. With this in mind manufacturers have ensured these new kitchen fans are flexible to install as well as offering reduced running costs and high energy efficiency. For example, Vent-Axia’s EKF


Range is designed for internal or external mounting as standard, duct connections can be made in any direction, blowing straight through, or turning through 90°C with the ducts positioned either vertically, horizontally or both with no loss of performance. This means that one unit can be used for almost any duct installation arrangement, internal or external making life easier for electrical contractors. In the current financial climate


The EC motors in Vent-Axia’s Kitchen Box Fan reduce energy and running costs by up to 44% when compared to AC motor fans.


To further improve efficiency these kitchen fans also feature backward curved impellers and an integral potentiometer that provides full manual speed control; ensuring that the system is not over ventilating resulting in wasted energy.


updating a kitchen fan might not be the first thing a kitchen operator thinks of. However, with this new breed of energy efficient kitchen fan on the market, it is now possible to replace old fans easily and economically. With the host of benefits this new technology offers, electrical contractors should find it easier to upsell the latest fans to kitchen operators. By upgrading kitchen ventilation, electricians


can offer not only reduced energy bills but also better comfort for kitchen staff, helping ensure a healthy working environment.


www.vent-axia.com


With restricted space, kitchen installations can oſten prove tricky. With this in mind manufacturers have ensured these new


kitchen fans are flexible to install as well as offering reduced running costs and high energy efficiency.


June 2018 electrical wholesaler | 21


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