External condensate pipework

The Worcester Greenstar Highflow CDi appliances have a condensate pump rather than a syphonic condensate trap. Rather than the condensate constantly dripping into the discharge pipe, the condensate is collected in the pump which releases it in 100ml quantities. This will help prevent freezing occurring.

Wherever possible the condensate discharge pipework should be routed and terminated internally. Should this not be possible, and the only available route is external, the following conditions should be observed:

• The pipework length should be kept to a minimum and the route as vertical as possible

• Where pipework could be subjected to extreme cold or wind chill, a weather proof insulation should be used. Alternatively, the condensate pipework could be increased to a minimum 32mm.