Dam0

Just thought I'd update this to help anyone in th future with an Ideal Logic Air ASHP - So long story short, I managed to get it get it to work by forcing it to work on commissioning mode... Phew The next morning I used a hair dryer to warm up the flow and return stat and low and behold It fired into life. I checked the manual again and I couldn't find anywhere that mentioned it, so thought I'd update this thread. Thanks JamesPa for your reply. So far the system is working will with a COP of just under 5. Thanks to JohnMo for help with the design (I bypassed the buffer, extra pumps, zone valves etc make it completely open loop). I'm sure I'll have plenty of questions to optimise the system in the coming months.

Hi all, Could really do with a bit of help with the commissioning of my new Ideal logic air ASHP system if any of you could spare a minute or two. I've paired the HP with Logic's own unvented cylinder and controller. My issue is: I cant get the compressor on the heat pump to start up. I get the message of "locked, return temp min" on the screen. I've spent hours messing around with it and I can't get the compressor to start at all. I am getting no registered fault codes and I can get the CH pump to run but the compressor doesn't attempt to start. I've removed the return temperature sensor and I get the note of "released, compressor ready" but again, it doesn't attempt to start. It also then states that the return sensor is "not used" and doesnt flag as a issue. Only thing I can think of after reading the manual is that it states that the compressor needs to be left with power for a minimum of 6 hours before use to prevent damage. Is the system clever enough to know this? I have a permanent bridge installed for the room stat and it's using an external sensor for WC. I'm a bit lost now if im honest... The HP itself also doesn't have any fault codes/blinking lights - just a solid green light as it should. Thanks for any assistance with this. much appreciated.

Incredible work. Thanks for taking the time to help.

I have a spare raspberry pi laying around actually so I'll read your blog and go from there. Thanks alot I'm hoping the controller will at least give me daily CoP. It does have sensors on the flow and return plus an outdoor sensor for WC. Once it's in and booted up I think I'll dig a bit deeper into open open energy monitor and get something setup. Thanks for your reply, you've been really helpful. I have an installation manual but it doesn't mention much about the controller, other than for commissioning. Hopefully I can at least pull some data from there. Cheers

Where would i start? Cheers

Its an ideal logic air ashp. Plus a matching UVC and controller. Do you know if any of the monitoring software will work with this system? Thanks Thanks for the reccomndations. I love the idea of the level 3 monitoring but realistically I only need the basics.

Hi all, For those who have installed monitoring devices on their ASHP setup, what would you recommend? I've had a look online but alot of the equipment gets expensive quickly.. Are there any cheaper alternatives which give the basics such a energy useage, COP etc.. Any home brew options? Thanks

Many thanks

Thanks for replies with this. I'm going to do exactly that and bypass the buffer tank in the combi cylinder. Do you think I'll need check valves on the return if I tee the rads in up stream and the return after the UFH manifold? Or will this not be a issue as its just a single zone? Thanks again

Hi all, First post here but have been lurking for a while now. I need to gather your vast collective knowledge to make sure I'm doing the right thing when it comes to heat pumps. I'm due to install my ashp within the next few weeks and need help with what will work out the most efficient method of heating circuit design. Currently I have UFH downstairs and radiators upstairs. The UFH has it's own blending valve, pump and actuators and is connected to the heating circuit via a couple of stats and a 3 port valve (paired to upstairs radiators) Radiators are on their own stats with TRV's. All pipework is 22mm with 15mm to the radiator valves only. The new ashp cylinder has two zones with individual pumps connected from a buffer tank. This is my plan... if im being simple please let me know... I plan to remove the UFH pump, actuators and blending valve and run the UFH completely open loop, connected to pump 1 on the buffer tank. I will then use weather compensation only to control this and aim to have it continuously heat at a low temperature. I will then use pump 2 on the buffer tank to pipe to the upstairs radiator. I will then be able to control these with the upstairs stat as and when we need a boost in warmth ( I can set timing profiles of the stat or just leave it open if needed). My thinking is that I will then have the main heating (UFH) running constantly and providing warmth downstairs without having to run the upstairs radiators upstairs all the time. I can then remove alot of the compexity of the system with essentially two loops (with the returns meeting just before the cylinder). I'd like to add that for the past few years using our thermal store we haven't needed the upstairs radiators on much other than a towel rail. The log burner, ufh and electric UFH in the bathroom has always provided enough heat throughout the year. My thoughts: If I am running the heat pump set to UFH temperatures, I can imagine that the upstairs radiators will barely be warm to the touch when they are switched on. I am happy to upgrade the radiator sizes if needed but they are fairly well specced anyway due to the thermal store in the property. Would it better to not remove the blending valve + ufh pump and instead run the heat pump at a higher temperature - blending it down for the UFH and have hotter water for the upstairs rads? If this was the case then I could then utilise just the one buffer tank pump and control the radiator demand via a 3 port valve. I feel this would add complexity however and mean I have two pumps running whenever the UFH is on. Or do I run everything open loop on 1 pump and just use weather compensation for the whole circuit? I feel I may stuggle to get the flow through the UFH in this case without really restricting the radiators in this case... Help!