Ease of installation SimpleSwitch to previous Worcester i System models with pre-piping jig offering rear piping as standard Flexibility of siting provided by long flue lengths (up to 12m with 60/100mm flues) and a 500ml integrated condensate siphon to reduce the risk of freezing Complete peace of mind for the end user with a 10-year heat exchanger and a 7-year product guarantee available as standard. Wide modulation range designed to optimise efficiency when heating demand is low. High-end design, quiet operation (up to 42dB(A)) with an intuitive, long text, colour boiler display for ease of use Performance at low pressure Quiet operation