Don’t get caught in the cold! The HHIC (Heating and Hot Water Industry Council) has updated its guidelines for installing condensate drainage pipes as a result of the prolonged spells of extremely cold weather increasingly experienced in the UK over recent years – down to 20oC and below in many areas.
Unsurprisingly, these cold patches resulted in a significant increase in the number of calls to boiler manufacturers and heating engineers from householders with condensing (high efficiency) boilers where the condensate drainage pipe had frozen and become blocked with ice, causing the boiler to shut down. In the vast majority of cases these problems occurred where the condensate drainage pipe was located externally to the building for some part of its length.
In view of the possibility that these UK weather patterns will continue, and even worsen in future due to the effects of global climate change, the HHIC guidance documents, one for installers and one for householders, have been revised to provide advice on how to install condensate pipes to prevent freezing in extreme conditions – where there are widespread and prolonged very low temperatures.
The new guidelines contain drawings that align with forthcoming revised British Standards as well as changes to the text, including a comment on the cutting of condensate drains and the need for re-instatement.
Download the new HHIC guidance documents here: