JackofAll Posted January 31 Share Posted January 31 Can someone explain to me what we require to set up ASHP system. So getting 9KW monobloc HP and tank for DHW, as it's a different brand do we need an something to communicate between the two or is the controller in the monobloc unit. Do we need an a buffer tank for UFH? Link to comment Share on other sites More sharing options...
JohnMo Posted January 31 Share Posted January 31 Not really enough information to answer the buffer question. UFH is it zoned if so what is the smallest volume of water? How far from heat pump is the cylinder, it easy to run a cable between the two? Can you provide the minimum stated system volume required for ASHP? If more volume is required a volumiser may be a better bet. Basics are ASHP 3 port diverting valve - one way to cylinder (normally closed) the other side to UFH (normally open) Heat pump cylinder, ideally with 3m2 coil It is normal for the cylinder to use a temperature NTC probe to measure the actual water temp, although most can be configured to use a volt free on/off signal. Link to comment Share on other sites More sharing options...
JackofAll Posted February 1 Author Share Posted February 1 15 hours ago, JohnMo said: Not really enough information to answer the buffer question. UFH is it zoned if so what is the smallest volume of water? How far from heat pump is the cylinder, it easy to run a cable between the two? Can you provide the minimum stated system volume required for ASHP? If more volume is required a volumiser may be a better bet. Basics are ASHP 3 port diverting valve - one way to cylinder (normally closed) the other side to UFH (normally open) Heat pump cylinder, ideally with 3m2 coil It is normal for the cylinder to use a temperature NTC probe to measure the actual water temp, although most can be configured to use a volt free on/off signal. @JohnMo most likely single zone, 14 ports consisting of 773m of UFH pipe. Unit approx 4m if placing off exterior wall or 8m if we place it where she wants it. Can you provide the minimum stated system volume required for ASHP? Had a look at the spec sheet for unit and cannot see it. The cylinder is 2.9m2 coil. Looked at a mitsubishi ecodan and was informed we would need a hydrobox due to installing a 3rd party tank and it was 2/3 the price of the monobloc unit hence question if panasonic would require same. Link to comment Share on other sites More sharing options...
JohnMo Posted February 1 Share Posted February 1 6 minutes ago, JackofAll said: Can you provide the minimum stated system volume required for ASHP? Not really as they are all different. But a single zone system looks ok. I needed about 40L to keep mine happy, small volume equals short run times. You need to read install instructions to get the correct details. Link to comment Share on other sites More sharing options...
JackofAll Posted February 1 Author Share Posted February 1 4 hours ago, JohnMo said: Not really as they are all different. But a single zone system looks ok. I needed about 40L to keep mine happy, small volume equals short run times. You need to read install instructions to get the correct details. Apologies @JohnMo, I copied and pasted your question in your first post re. Min system stated volume. I checked the data sheet for the unit and didn't see. Will look more into it. Link to comment Share on other sites More sharing options...
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