central heating and hot water boiler combination
Explanation:
The 'combi-boiler' has a dual function to provide hot water on demand to taps (i.e. when a hot-water tap is turned on, the boiler fires to heat the water for the hot-water tap system), and hot water to the central-heating system under control of one or more thermostats.
This is a common type of domestic boiler in the Netherlands, and there are 'HR' (high yield) and 'VR' (improved yield) versions.
|   Dave Calderhead
Netherlands
Local time: 10:38
Works in field
Native speaker of:  English
PRO pts in category: 34
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The translation workplace 
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