Baxi Commercial Division has supplied a pre-fabricated packaged boiler plant, solar thermal hot water system and a wall-hung direct fired continuous flow water heater for the new two-storey Science and IT block at Bryn Alyn School in Wrexham, Wales. The construction of this new facility forms part of Wrexham County Borough Council’s Secondary Schools Phase 2 programme which recently has seen Bryn Alyn and two other schools in the area benefit from a £20 million investment programme. Designed to minimise environmental impact, the new building employs a number of sustainable technologies and has a BREEAM rating of ‘Excellent’. Bryn Alyn is an English-speaking, community comprehensive school for 11 to16 year olds with approximately 800 students. Situated in the village of Gwersyllt, the school serves several village communities to the north west of Wrexham as well as an increasing number of pupils who choose to travel to the school from other areas.
Building services for the new Science and IT block were designed by global engineering corporation URS. The Baxi Commercial Division equipment was selected on the basis of functionality, features, size range and value.
The heating equipment was installed in the boiler room and provides space and water heating for the new building. Space heating, via underfloor and perimeter systems, is provided by a Sirius MB packaged boiler plant, with two Sirius 110kW wall-hung boilers. Baxi Commercial Division’s Potterton Commercial Sirius MB package is a complete heating system, including boilers, pumps, pressurisation system and heating controls. Factory built and tested, with only on-site assembly of the modules and connection to services required, the package enabled fast installation. This is a well-proven packaged solution with freely available design assistance and ‘plug and play’ capability simplifying site works for the contractor. Modules may be connected in a number of configurations, making them suitable for most boiler rooms – even those with restricted access and problematic layouts. Each compact module can fit through a standard doorway, simplifying transportation, manual handling and installation. With the advantages of off-site construction and availability of a 5-year warranty, these units offer both clients and installers the ultimate in fast, efficient installation. Benefits of this approach include reducing the potential for onsite security issues, minimum disruption and reduction in system downtime.
Also installed in the boiler room are an Andrews Water Heaters SOLARflo cylinder and associated equipment which are connected to the system’s solar panels mounted on the building’s flat roof. Domestic hot water is preheated by the solar collectors and the heat transferred to a non-corrosive, stainless steel, unvented cylinder. This, in turn, supplies a FASTflo wall-hung, balanced flue, continuous flow water heater which measures the incoming water flow and temperature, then modulates the burner up or down to meet the desired hot water demand, with plus or minus one degree accuracy and no stand-by heat losses. Consequently, the Andrews SOLARflo water heating system makes a significant contribution to reducing fuel consumption, running costs and carbon footprint. In addition to the glazed flat plate solar collectors and non-corrosive, stainless steel solar cylinder, the complete Solarflo package also includes solar controls, pump station, expansion vessels, first fill of heat transfer fluid and collector mounting accessories.
SOLARflo glazed flat plate collectors are Solar Key Mark Approved and, in common with the stainless steel unvented cylinders and evacuated tubes in the Andrews range, carry a 10 year guarantee.
The FASTflo model WH56 water heater supplied has a maximum flow rate of 32 litres per minute through a temperature rise of 25ºC and serves all the building’s domestic hot water requirements. Bryn Alyn School typifies the commercial or large domestic applications where a continuous supply of hot water is required and this technology ensures a fuel efficient and cost effective flow of hot water that is extremely safe to operate, whilst automatic ignition ensures that no fuel costs are incurred when the units are not in use. Accurate temperature settings from 37oC to 80oC and the constant flow of hot water reduces the risk of colonisation by harmful legionella bacteria. External adjustment of the required flow temperature and a wide range of operation and fault diagnosis information are enabled by a remote controller, designed especially for this range of heaters, which can operate just one unit, or up to six connected in series.
Baxi Commercial Division brands include Andrews Water Heaters, Baxi-SenerTec UK and Potterton Commercial, offering a diversity of technologies and equipment enabling the provision of integrated solutions from a single source.
These distinctive capabilities, together with the availability of application support and technical advice throughout the installation, characterise the benefits of the Baxi Commercial Division product range and after sales service.