14 Products that perform | Service that delivers | People that care Introducing our range of commercial boilers Our boilers come in all shapes, sizes and materials. And we’re here to help you find the right fit. Each product is different and has its own unique qualities. You can use this guide to browse through our range of wall hung and floor standing boilers, and read on to find out more about the different types of boilers available. Condensing or non-condensing Condensing boilers use the latent heat from flue gases (condensate) to work in the heating system, rather than being wasted. This improves efficiencies. However, for these boilers to condense, return temperatures from the system need to be less than 55°C, otherwise they will only achieve marginally higher efficiencies than a high efficiency non-condensing boiler. Non-condensing boilers are not able to condense. They offer high efficiencies but will never be able to match the efficiencies possible from condensing boilers. They are often used for replacement projects, as the flues on older atmospheric boiler systems are not able to cope with the condensate produced from a condensing boiler. However, since the introduction of the Energy-Related Products Directive (ErP) all boilers below 400kWmust now be condensing to comply with the efficiency criteria. Floor standing or wall hung On the floor or off the wall, you can decide. Wall hung boilers have many benefits and are sometimes favoured for their convenience of use. In the domestic world nearly all boilers are wall hung due to their size and the space available in a home. They are often smaller than floor standing boilers and easier to handle. They can be installed on an existing wall or, if the wall can’t support the weight of the boiler, floor standing frames can be used. They can be installed side by side in a cascade arrangement and the availability of matching pipe kits can simplify installation. For large heat demands it is not possible to match with a single wall hung boiler – the largest output available from our wall hung boiler range is currently 146kW. Floor standing boilers, however, sit directly on the floor. They were traditionally heavier, but with improvements in boiler design, our Wessex ModuMax mk3 floor standing boiler weighs in at less than 1kg per kW output on the larger models. They too can come with optional pipework kits and can be installed in modular arrangements vertically or horizontally (depending on the boiler). Pre-mix or pressure jet/power flame The majority of new boilers have a pre-mix combustion system. They use a fan to mix fuel and air prior to entering the burner. Whereas a pressure jet boiler, or power flame/forced draught as they are also known, uses a fan to pressurise the combustion air prior to mixing with the fuel at the burner head. Modular or single large output Modular boilers are designed as an alternative to large single boilers and offer an efficient approach to heating requirements, especially when combined with a modern control system. Using sequence control in a modular boiler system, you can optimise boiler operation and closely match the building load. Each module can be a separate boiler sat side by side, or as a vertical arrangement with one module above another like our Upton or Wessex ModuMax boilers. This makes them compact and lightweight, often able to fit through a standard doorway. They are suited to a multitude of projects, but particularly those with space and weight restrictions such as city centres, housing developments, rooftop, and basement plant rooms. Modular boilers provide a flexible and secure approach to heating solutions, with each module providing a percentage of the total system load. In the event of one module failing or for service/ maintenance periods, the other modules are available to provide continuity of heat. Large output boilers may provide all the heat required for a building from a single boiler. These will take longer to heat up and depending on the building’s heat loads can waste energy due to variances in heat demand throughout the day. Larger output boilers may be better suited to projects with consistently high loads or combined technologies with integrated thermal stores, such as district heating schemes. Taking advantage of longer periods at higher loads, fewer large output boilers on suitable projects can simplify installation with less system and controls connections required. Modular boilers You can find out more about the load matching benefits possible using modular boilers on pages 16 to 17. What type of boiler can you choose from? BOILERS
RkJQdWJsaXNoZXIy NTAwMTk1