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Abbey Hill Academy undergo boiler refurbishment

The EFA provided funding for the school's refurbishment project which was completed by Hamworthy Heating

Posted by Hannah Vickers | January 22, 2017 | Facilities management

Abbey Hill Academy, facing risk of a complete boiler breakdown with equipment over 25 years old, was in urgent need to find a replacement. After the completion of a site survey, a system consisting of Hamworthy cast iron condensing boilers and direct-fired water heaters was identified as best solution to be fitted to the existing heating system. Financing was secured by a successful bid from the Condition Improvement Fund provided by the Education Funding Agency (EFA) available for academies and sixth-form colleges.

Abbey Hill Academy is a school for children with learning difficulties based in Stockton-on-Tees. The facility consists of three buildings providing a comfortable learning atmosphere for around 300 students aged 11 to 19 years. Two old cast iron sectional non condensing boilers were supplying heating and hot water for the main Stephenson Building consisting of 18 classrooms for around 160 students. Old atmospheric water heaters installed in the same building, delivered hot water to showers, sinks, basins and the main kitchen. 

Philip McHale, Premises & Facilities Manager at Abbey Hill Academy as part of the Horizons Specialist Academy Trust, was looking for a cost-effective solution and Hamworthy had the answer.

 

“The priority was to find a boiler that was energy efficient, would reduce costs, could be fitted to the existing system and came with a complete package of supply to commission,” said Philip. “I checked a lot of boiler manufacturers and found Hamworthy’s website to be useful with the offer of a free site survey. We were pleased that we got to meet both Steve Johnson, area sales manager and Stuart Turner, the national sales manager. Both had a genuine interest in our project.”

Two Purewell VariHeat cast iron condensing boilers with a combined output of 360kW were chosen to replace the two old non-condensing cast iron sectional boilers. With heat exchangers made from the same robust material, big waterways and an upgrade to condensing models, the boilers offer long-term reliability, compatibility to the existing heating system while profiting from up-to-date technology for best efficiency.

The hot water supply was met by the installation of two Dorchester DR-FC Evo direct fired condensing water heaters to replace old water tanks, delivering a total output of 1,192 litres per hour.

Philip added:“We updated the old tank fed system that delivered poor hot water pressure to mains fed. There has been a vast improvement in hot water pressure and it has also improved our Legionella management. The web based control system enables us to manage the usage of the boilers, saving us energy.”

The water heaters have an anti-legionella safety function, which means water will be heated for a period at a high temperature (e. g. 65°C for one hour) to prevent the risk of legionella bacteria forming in the vessel. Additionally, the recirculation pump can be set to run to ensure the whole system is purged. Built in controls allow this task to be performed on a regular basis, ensuring water stays legionella-free and safe.

After the installation, commissioning of the newly installed boilers and water heaters was carried out by a Hamworthy-approved service engineer. This not only ensured that they were set up for optimised performance, but also improved their warranty terms, covering parts plus labour for two years from commissioning.

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