As heat pumps become increasingly popular in Irish new build and deep retrofit projects, domestic hot water performance must be considered as part of the complete heating system design. Effective heat pump performance depends on the cylinder, controls and wider heating system being correctly sized, specified and commissioned.

For construction managers and project teams, optimum performance requires attention at every stage of the build from initial specification to installation, commissioning and final handover.

Grant’s new Quick Recovery (QR) Cylinder range has been developed to work with the award-winning Grant Aerona R290 air source heat pump and support efficient low-temperature operation. Supported by Grant’s free Heating Design & Specification Service, the range forms part of an integrated heating package, helping to support correct specification and reliable system performance.

Accurate specification
Cylinder selection should consider anticipated occupancy, bathrooms, simultaneous demand, flow rates and heat pump output, not storage capacity alone. Recovery time is equally important as oversizing the cylinder can increase cost, space requirements and standing heat loss, while undersizing may result in insufficient hot water when it’s needed most.

Heat-transfer capability is critical because cylinders designed for higher-temperature boilers may not perform effectively with a low-temperature heat pump. Grant’s Quick Recovery Cylinders feature a high-surface-area coil manufactured from DN25 stainless steel tubing to optimise heat transfer and support rapid recovery. High-performance insulation helps minimise standing heat loss, while the duplex stainless-steel inner shell supports long-term durability.

Early design coordination and installation
Early manufacturer engagement can help identify sizing, compatibility, plant space and installation requirements before construction begins.

Through its Heating Design & Specification Service, Grant uses planning drawings and project information to specify the Aerona R290 heat pump, QR cylinder, underfloor heating and smart controls as a fully integrated system. This helps architects, consultants and contractors coordinate cylinder dimensions, access, pipework, electrical requirements, controls and maintenance provision, while helping to minimise late design changes that could affect project costs or system performance.
Available in capacities from 150 to 300 litres, the QR cylinder range includes standard, slimline, Smart pre-plumbed and Smart integrated configurations to suit different property layouts and installation requirements. Grant’s Smart pre-plumbed models incorporate factory-fitted components to reduce work on site and support more consistent installation, particularly across multi-unit developments.

Commissioning the system & handover
Grant provides on-site commissioning at no additional cost for every Grant Aerona R290 heat pump installed. This allows Grant’s technical team to check that the heat pump and associated system technologies, including the QR cylinder and controls, have been correctly set up to support efficient operation.

As part of the process, Grant also provides commissioning and relevant system information, giving construction teams assurance that the completed installation has been properly configured before occupation, while providing a useful reference for property owners and those responsible for future maintenance.

By maintaining oversight from specification through to handover, construction professionals can help minimise avoidable changes and callbacks while supporting reliable long-term performance of the complete integrated heating system.

Think Heating. Think Grant.
Visit grant.ie for further information on Grant’s innovative product range.

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Michael McDonnell Managing Editor of Irish Construction Industry Magazine & Plan Magazine

Email: michael@irishconstruction.com      WWW.MCDMEDIA.IE