Worcester launches Greenstar i

The Greenstar i
The Greenstar i

Worcester, Bosch Group has unveiled the latest gas-fired combi boiler to join its range. The Greenstar i boasts enhanced performance and A-rated annual efficiency, alongside a host of features derived from installer feedback.

Improving on the features of the Greenstar i Junior, which remains the UK’s best-selling condensing boiler, the new model is available in combi outputs of 25kW and 30kW, and has been developed to deliver improved water performance in small to medium sized properties with one bathroom.

Ahead of the forthcoming Energery-related Products requirements, Worcester’s new addition is fully compliant thanks amongst other things to the inclusion of a low energy circulating pump. The modulating pump within the boiler will vary the flow rate through the boiler and heating system in relation to the number of open thermostatic radiator valves’s. Additionally, the established WB3 silicon heat exchanger within the boiler has an extra-large surface area for enhanced heat exchange efficiency, while an optional ‘plug and play’ weather compensation kit makes it easy to add a level of climate control to the system.

In response to the challenge posed by frozen condensate in the winter months, the Greenstar i has been engineered to contain a larger condensate siphon – ensuring an uninsulated, externally routed condensate pipe connected to the new boiler will not freeze in sustained temperatures of -15°C for up to 48 hours.

To simplify installation, the Greenstar i is delivered with a pre-assembled wall frame with positive ‘click’ engagement and mounting hooks and with the same dimensions as the Greenstar i Junior, replacements will be simple. Additionally, all components within the boiler are serviceable from the front, and there is no requirement to dismount the boiler from the wall to service its expansion vessel, or to break the combustion chamber seal to access the fan. A Benchmark menu within the boiler control software also simplifies completion of the Benchmark logbook.

The Greenstar i with the cover off

The Heatronic control panel showcases an all-improved interface, with text descriptions or error codes which are communicated through the enhanced control panel, enabling homeowners to communicate more effectively with engineers and installers.

The Greenstar i is also available in a range of system variants, of nine, 12, 15, 18, 21 and 24 kW, enabling installers to provide precise sizes dependent on a property’s needs. The compact design also ensures the boiler’s suitability for a variety of locations including kitchens, utility rooms, bathrooms, airing cupboards, lofts or garages.

Martyn Bridges, director of marketing and technical support at Worcester, Bosch Group, said: “Feedback from installers has been crucial in the development of our product strategy for the Greenstar i. Ultimately, we’re filling a gap in the market for a low energy boiler, with high output and improved hot water flow rates, while maintaining all of the features which have made the Greenstar i Junior so popular amongst installers.

“One in 20 UK homes is fitted with a Greenstar i Junior, so it has been important that we don’t deviate from this winning formula. The close relationship we have with our installers enables us to put them front of mind when developing new products, aiding them through easier installations, and the provision of increasingly efficient solutions. The Greenstar i Junior has been a best-seller since condensing boilers were made mandatory in 2005, so this year seemed like a natural time to share our latest innovation with the industry.”

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