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New Greenstar from Worcester

Worcester, Bosch Group’s latest gas-fired combi boiler in its market leading range is the Greenstar i, which boasts enhanced performance and A-rated annual efficiency.

New Greenstar from Worcester

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.

A modulating pump within the boiler will vary the flow rate through the boiler and heating system in relation to the number of open TRV’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.

The Greenstar i is also available in a range of system variants, of 9, 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.

About Fiona Russell-Horne

Fiona Russell-Horne
Group Managing Editor across the BMJ portfolio.

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