Maintaining exact conditions within these rooms is often critical to the smooth running of the entire operation. Recently, we have seen an increase in the use of the ISU series of Under Ceiling Units serving electrical switch rooms.

There has been a substantial change in how electrical switch rooms, electrical control rooms, etc are treated for cooling or ventilation. They are no longer just serviced by a couple of wall mounted prop fans, operating off a thermostat set to 28˚C allowing flow thru ventilation.

According to Temperzone Product Manager, Gordon Stewart, “Switch rooms have now become a lot more sophisticated. While they are being filled with more and more heat generating equipment, the exterior has not grown accordingly. Therefore, there is little space inside to provide a good distribution of conditioned air via the traditional ductwork and grille distribution arrangement, creating quite a challenge.

“The solution is to have the ISU Fan coil fixed under the ceiling and positioned along the length of the building. This will provide good air flow distribution to all the switch gear within the room. This has also worked very well on portable switch rooms, where the equipment has been installed, the switch room is transported to the site and then commissioned. The attached sketches show how the units are being installed within the switch room.”

Temperzone has recently installed several of these ISU Series units in some of the harshest conditions in Australia. Major global organisations BHP Billiton and Fortescue Metals have welcomed the ISU Series solution in several of their installations.

The Series 2 ISU / OSA series will operate in cooling mode, in ambient conditions of up to 50˚C, making them ideal for those remote locations. Power supply is available in either single or 3 phase. With no ductwork to supply or install and no grilles to air balance, the installation cost is less than the ducted equivalent.

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