Russell griffiths Posted May 20, 2020 Share Posted May 20, 2020 Local to me there is a second hand ashp, it’s being taken out of a house that is having a large swimming pool removed. Im wondering if it’s worth a punt. Its a daikin unit with a split indoor outdoor setting, whatever that means. It’s 18kw so a big unit, it has just been serviced and had some part replacement, the service engineer said he could see no reason for it not to continue to function properly for a good few more years. They want £99 for it I wonder if it’s worth sticking it in for a year or two until we have some dosh to replace it. @PeterW @ProDave @SteamyTea thoughts chaps. Cheers russ. Link to comment Share on other sites More sharing options...
dpmiller Posted May 20, 2020 Share Posted May 20, 2020 is it 3-phase? Split means you'll need it evacuating on removal and regassing once the new gas lines are installed Link to comment Share on other sites More sharing options...
SteamyTea Posted May 20, 2020 Share Posted May 20, 2020 8 minutes ago, dpmiller said: is it 3-phase? Split means you'll need it evacuating on removal and regassing once the new gas lines are installed Not a lot to add to that, except as it was for a swimming pool, is there any corrosion. Link to comment Share on other sites More sharing options...
ProDave Posted May 20, 2020 Share Posted May 20, 2020 Find out the model number and find the details. Swimming pool heat pumps tend to be more basic. It may lack the functions to do DHW and heating at different temperatures for instance. Link to comment Share on other sites More sharing options...
Russell griffiths Posted May 20, 2020 Author Share Posted May 20, 2020 I might not have explained properly, it’s described as split, as in it could power two things the house on one circuit and the swimming pool on another. Do they all have a gas in them or is it just cooling units. Link to comment Share on other sites More sharing options...
PeterW Posted May 20, 2020 Share Posted May 20, 2020 Any ASHP has a gas circuit. The difference is if it is air to water in the main unit. A split is normally one that has the gas /water heat exchanger in the house and connected with small bore refrigeration pipework. If it is a true split then it will be £3-400 to get it decommissioned and moved, assuming the gas is readily available as a lot of the older gasses are now being phased out. Find the history and the part numbers and lets have a look. Link to comment Share on other sites More sharing options...
SteamyTea Posted May 20, 2020 Share Posted May 20, 2020 (edited) 15 minutes ago, Russell griffiths said: Do they all have a gas in them or is it just cooling units. They all do, just like most fridges. It is how they work. Cross post with PeterW. Basically they have a gas pump in them. As the gas is compressed, the temperature rises, as it expands, the temperature cools. There are heat exchangers to either take from the hot side or the cold side depending on what you want. Edited May 20, 2020 by SteamyTea Link to comment Share on other sites More sharing options...
Russell griffiths Posted May 20, 2020 Author Share Posted May 20, 2020 Cheers all i don’t think I know enough about these to make this a bargain, it could turn into a big headache. Would collect it if it was free but not worth the punt for £100. Link to comment Share on other sites More sharing options...
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