BSEE-SEP21-PG24-25 Boilers_Layout 1 23/08/2021 14:16 Page 24
BSEE
Ensuring thorough commissioning of new heating equipment is essential to achieve optimum performance and avoid an energy performance gap, says Neville Small, Key Accounts Director at Baxi Heating. So why not make it part of the specification?
heat-related emissions in buildings and support businesses in meeting their environmental commitments. But gaps between the intended and actual performance of the heating system can be holding some businesses back from achieving their goals.
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So how to avoid this? One answer is to prioritise commissioning before final handover.
Let’s consider boilers, which are a key component of the plant room in most commercial buildings, whether the sole provider of heat or, increasingly, working alongside renewable technologies in hybrid systems.
When specifying new condensing boilers, the efficiency credentials will likely be one of the deciding factors. But it’s important to remember that boilers – like all heating technologies – will only perform as intended if they are installed and maintained correctly. And it’s the quality- focused commissioning process that ensures that the installation is set up
eating system design is evolving rapidly as building services
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correctly both to the manufacturer recommendations and to the specification.
Vital process
So let’s recap on who can carry out commissioning and what it involves. The procedure is carried out by certified professionals, typically the manufacturer’s specialist engineers. During a boiler commissioning, a series of installation checks are
BOILERS & HOT WATER Closing the performance gap
carried out to confirm that the system is installed in accordance with the specification and manufacturer instructions. Operational testing makes sure that the system operates safely and responds correctly in all conditions. Full performance testing then ensures that the boiler performs as intended. A robust commissioning process will identify any potential issues or mistakes at the outset and enable them to be caught and fixed prior to handover.
Equally importantly, commissioning provides certainty that the product and system will operate safely. The comprehensive checks that form part of boiler commissioning will ensure both the predicted high performance from the equipment and its safe operation. These safety tests confirm that it responds in a safe and controlled manner during failures or shutdowns. It should be noted that
commissioning is a legal requirement to ensure adherence to Building Regulations and Gas Safe guidelines For specifiers and building services engineers, commissioning provides assurance that the specified output, efficiency and emission levels will be achieved. This in turn ensures optimum performance for maximum efficiency and energy savings, all of which benefits building owners and occupants.
Mind the gap
Given the evident benefits of commissioning, why the need for a renewed focus on its inclusion? As commissioning takes place at the end of installation, there can be a tendency to rush the process on projects that have fallen slightly behind schedule.
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24 BUILDING SERVICES & ENVIRONMENTAL ENGINEER SEPTEMBER 2021
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