willbish Posted June 27, 2021 Share Posted June 27, 2021 Has anyone used these on their ASHP install? Saves all the playing about with glycol but at some cost Link to comment Share on other sites More sharing options...
ProDave Posted June 27, 2021 Share Posted June 27, 2021 Care to explain how it works? Link to comment Share on other sites More sharing options...
willbish Posted June 27, 2021 Author Share Posted June 27, 2021 21 minutes ago, ProDave said: Care to explain how it works? Not exactly sure, but I think its some kind of relief valve that opens a little if the outside temp drops. They are fitted on the external pipe work. Link to comment Share on other sites More sharing options...
dpmiller Posted June 27, 2021 Share Posted June 27, 2021 relies on the pump punning continuously I'd guess. It's one thing water expanding as it cools, but a small fixed pocket of water freezing might be something else... Link to comment Share on other sites More sharing options...
ProDave Posted June 27, 2021 Share Posted June 27, 2021 5 minutes ago, dpmiller said: relies on the pump punning continuously I'd guess. It's one thing water expanding as it cools, but a small fixed pocket of water freezing might be something else... If the pump runs continuously it is never going to freeze. How will a relief valve work to protect anything if the water is not flowing? It will freeze even if vented to atmosphere. There is either something extremely clever here, or I just can;t see how you can avoid antifreeze in the pipework to an outside unit. Link to comment Share on other sites More sharing options...
willbish Posted June 27, 2021 Author Share Posted June 27, 2021 Not sure if there's anything complex Features in this install video Link to comment Share on other sites More sharing options...
JOE187 Posted June 28, 2021 Share Posted June 28, 2021 https://www.ebay.co.uk/itm/183988548162?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20160908105057%26meid%3D4164b2fbfcbd4d93b656e48326371fc1%26pid%3D100675%26rk%3D1%26rkt%3D15%26sd%3D183988548162%26itm%3D183988548162%26pmt%3D0%26noa%3D1%26pg%3D2380057&_trksid=p2380057.c100675.m4236&_trkparms=pageci%3A4f28a0c1-d7e4-11eb-856b-966f034875dd|parentrq%3A51914ba917a0acb45b8a85b7ffee9062|iid%3A1 Would recommend putting heat pump fluid in as oppossed to having pump running in cold weather. Link to comment Share on other sites More sharing options...
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