Ireland's Plumbing & Heating Issue 130 May-June

FAN COIL UNITS

WITH A MOVE AWAY FROM TRADITIONAL ANGLED OR CLOSED-COUPLED FAN COIL UNITS, ALTECNIC HEAD OF OEM SALES UK & ROI MARK MOGEY DISCUSSES HOW NEW UNIT DESIGNS CAN HELP MAKE INSTALLATION AND MAINTENANCE EASIER… Designing fan coil units

Caleffi’s 149 Series pre-assembled fan coil unit.

What is a fan coil unit? A fan coil system is a decentralised HVAC system with fan coils or terminal units, at or near the occupied space serviced by central heating and cooling plants. A fan coil system can be used in many building types including hotels, multi-family residential, schools and office blocks. Fan coils are made up of an enclosure, fan and motor, coil with drain pan and a filter. Fan coils come in a wide range of configurations including wall, ceiling exposed, horizontal ceiling concealed, stacked and large capacity. Terminal units heat or cool by using hot water from a central heating plant and chilled water from a central chiller plant. The fan is powered by a small electric motor that circulates room air through the filter and coil. Four pipe fan coil systems have two water loops (hot and chilled water) throughout the building connected to each fan coil. The water loops are insulated, and providing heating and cooling with water has very low transportation

coil units can be custom made to include specific connection types and flow rates in a single assembly. This simplifies the design process for specifiers, as it subsequently saves time for installers. Due to the design of pre-assembled kits, with all elements of the kit readily joined and the kit requiring a minimum number of additional joints, the likelihood of leakages is massively reduced. From this, a cost benefit can be had, with a reduction in water usage and a reduction in potential maintenance costs. To further ensure peace of mind, the pre-assembled fan coil units are often pre-tested to certify the standard of the fan coil unit. When this is done, the quality and performance of the fan coil unit can be guaranteed, reducing the likelihood of large maintenance costs.

or pump work costs. As a result, fan coils are an energy-efficient system choice for a range of building types. However, they involve a complex and timely installation for many installers and require a great understanding of the make-up of a fan coil unit to ensure that they work effectively. How can design assist an installer? Dealing with fan coils and air handling units can be a tough matter without the right equipment. Having a pre-assembled kit for terminal units, which is compact and composed of all devices needed for its operation, can help ease installation for installers, as well as offering quick commissioning and maintenance.

Mark Mogey, Head of OEM Sales UK and ROI.

The benefits of pre-assembly

Assured quality and performance

Pre-assembled kits, unlike buying components separately, provide assurance for both installers and end-users. Through design specification, pre-assembled fan

Caleffi offers a pre-assembled fan coil unit- the 149 Series. The linear design of the unit allows for quick

72 | PLUMBING & HEATING MAGAZINE

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