| 摘要 |
A condensing boiler 2 is disclosed, the boiler comprising a reservoir 20 for collecting liquid condensed from flue gas produced by the boiler when in use; and a first conduit 22 extending from the reservoir and providing a first flow path for removing liquid from the reservoir in normal operation of the boiler. The boiler also includes indication means operable to provide an indication to a user of an excessive accumulation of liquid in the first conduit. Preferably the indication means provides a visual and/or an audible indication. The indication means may comprise a float 32, visible through a transparent portion 44 of the first conduit, and responsive to an accumulation of condensate in the conduit. In further aspects, the boiler comprises a second conduit 50 providing a second flow path for removing liquid from the reservoir and means, such as a valve 52, for selectively opening the second conduit to provide a flow path for removing liquid from the reservoir in the event of an excessive accumulation of liquid in the reservoir or the first conduit. In another aspect, a condensate drain assembly for a condensing boiler is provided.
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