Ian Nixon Posted January 13, 2019 Share Posted January 13, 2019 Hi what temperature do most people run there ashp on for the water leaving it? i believe this is the temp for the dhw and the water in the heating system Link to comment Share on other sites More sharing options...
ProDave Posted January 13, 2019 Share Posted January 13, 2019 Mine is an LG It only ever runs in heating mode OR hot water mode, and each has it's own temperature set independantly, it never runs HW and heating at the same time. For DHW mine has a temperature probe built into the tank and it heats the tank until the desired temperature is reached. I have that temperature set to 47 degrees. To achieve that I have the DHW "water leaving" temperature set to 55 degrees. In heating mode it heats the UFH directly and I have the water leaving temperature set to 37 degrees. Link to comment Share on other sites More sharing options...
Ian Nixon Posted January 13, 2019 Author Share Posted January 13, 2019 Oh I see that’s good. Mine only has 1 temp and then a thermostat on the ufh manifold to turn the temp down. Mine runs both st same time but I don’t think it should Link to comment Share on other sites More sharing options...
ProDave Posted January 13, 2019 Share Posted January 13, 2019 What make and model is it? Link to comment Share on other sites More sharing options...
Ian Nixon Posted January 13, 2019 Author Share Posted January 13, 2019 Its make is Dream Link to comment Share on other sites More sharing options...
ProDave Posted January 13, 2019 Share Posted January 13, 2019 This one? http://dreamheatpumps.co.uk/5kw_heat_pump_HOME.html Not much information on their website. No mention of an inverter drive so it is probably very basic and all or nothing? No downloads to manuals or any useful technical specification. Link to comment Share on other sites More sharing options...
Ian Nixon Posted January 13, 2019 Author Share Posted January 13, 2019 I’ve got a manual. I have a plate with a part number on but I’m unsure what you are getting at? I know it only has one setting to put a temperature in as it was the manufacturer who called me and told me what to do. Link to comment Share on other sites More sharing options...
ProDave Posted January 13, 2019 Share Posted January 13, 2019 I was trying to find a copy of the manual to have a look at. The exact model number would help to search to see if it is available on line. Without seeing the manual I can't add much to whether there may be different options. It is somewhat of a limitation if there is indeed only one set temperature available. Link to comment Share on other sites More sharing options...
Ian Nixon Posted January 13, 2019 Author Share Posted January 13, 2019 I see what you are saying. I do think it is a cheap Chinese one been fitted though lol Link to comment Share on other sites More sharing options...
dpmiller Posted January 13, 2019 Share Posted January 13, 2019 Dreams are sold as a kinda "boiler replacement" unit so likely just the one temperature. Link to comment Share on other sites More sharing options...
newhome Posted January 13, 2019 Share Posted January 13, 2019 So what’s the issue with the single temperature on your set up? Shouldn’t you be setting it at a temperature appropriate for your DHW and letting the blending valve or whatever you have set up control the UFH at a lower temperature? Link to comment Share on other sites More sharing options...
ProDave Posted January 13, 2019 Share Posted January 13, 2019 The trouble with a single temperature is it will be a high temperature for DHW, so will be likely too hot for UFH and the heat pump will not run anywhere near as eficcient as it would running at a lower temperature for heating. Link to comment Share on other sites More sharing options...
Ian Nixon Posted January 14, 2019 Author Share Posted January 14, 2019 20 hours ago, newhome said: So what’s the issue with the single temperature on your set up? Shouldn’t you be setting it at a temperature appropriate for your DHW and letting the blending valve or whatever you have set up control the UFH at a lower temperature? That’s what I do. Link to comment Share on other sites More sharing options...
Ian Nixon Posted January 14, 2019 Author Share Posted January 14, 2019 (edited) 20 hours ago, ProDave said: The trouble with a single temperature is it will be a high temperature for DHW, so will be likely too hot for UFH and the heat pump will not run anywhere near as eficcient as it would running at a lower temperature for heating. Edited January 14, 2019 by Ian Nixon Link to comment Share on other sites More sharing options...
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