richo106

Right after looking on the internet My pump was on proportional power - medium (flashing green) I have now changed this to constant power - highest power (constant orange)

I just turned my GF manifold off and checked the flow rates of the FF one Basically when the downstairs is on its looking approx 24/25 When the downstairs is off its about 35 Is that what people would expect? I will look into the pump settings shorty

Yes I will certainly try 24/7 running, will set this up tonight to see how I go on for the next few days. Will try and monitor temp and energy consumption best I can but not too cold at the minute If this doesn’t make anything difference I’ll defo look at increasing the flow rate, somehow splitting the circuits and installing an additional pump

Yes I can understand the low dT, I checked the temps again this morning and loops ranged between 1-1.8 deg loss, but IR camera was bouncing around a little so hard to be super accurate I will turn off the GF manifold again so the the pump just feeds the FF to see what flow rates I can achieve per loop. currently the ASHP feeds a buffer tank and then pumped from there to both manifolds using a single pump. one thing that I want to try is not shutting my heating off during 4-7 during the expensive period to see if this makes any difference at all. I’ll just run my heating 24/7 on weather comp with thermostats set at 23.5 to stop overheating. do you think this will make much difference cost wise? It takes a large amount of energy to reheat the floors and buffer tank when it heats back up at 7 so hopefully it won’t be too much difference any thoughts on this would be helpful

Did you manage to anything to improve it? Or just manage with it?

Thanks @John Carroll Currently the 11 loops on the manifold have an average flow rate of approx of 2l/m so would that mean total flow rate of approx 22LPM. Is there anything that can be done to increase the dT at all? Guessing that’s to do with install etc Is it as ‘simple’ as splitting the GF and FF circuits and have a pump for each? If the new/separate pump increases flow rate to approx 3 for example. Or would it be better to aim for 4? When I turned the GF Monifold off previously the flow rates did increase to around 3 but even we some tweaking on the flow rate indicators I couldn’t get them To increase passed that

At 9pm I upped my water temp to 35 deg At 11pm I checked the flow and return temps on my FF manifold, average in was 32deg and return 31deg. So averaging around 1 deg heat loss My bathroom tiled floor has increased from 20.5deg to 21 deg from 7pm to 11pm I am not sure where to go next

Update I have borrowed an IR camera to check flow and return temps of the FF manifold The heating turned on at 7pm I have recorded the temps at 7.15pm and 7.45pm, please see attached picture to show my findings There is definitely heat loss but not much I have also IR camera'd the carpeted floor and can see the heat lines, this was around 8pm and the temp of the heat was around 20.2 deg and the 'cold bit' was 19.6 deg There was no of any heat lines on the tiled floor in the bathrooms yet (there is downstairs but appreciate the floor make up is different) For this shows the water is getting round the loops at least One thought i have now is to take it off weather compensation curve and set the water temp to 35 deg, this will make the GF 'bounce off' the thermostats though. I am not sure this will make enough difference on the freezing cold days upstairs though Any other thoughts/ideas on my findings today would be grateful, many thanks

@Nickfromwales I would love to know what step 2 is

I thought i would unscrew all the actuators to see if that would make a difference (not expecting it to) 6.55pm - temp in and out was 21deg (heating been off 3 hours) 7.01pm - temp in was 25 and temp out 21 - also changed over temp gauge to prove working 7.05pm - 23 deg in and out 8pm - 25 deg in and out. For ref the GF manifold temp in 25 deg and and temp out 22 deg Saturday I am going to refill all FF loops just to ensure there is no air in there, once again i am not expecting this to make much difference as there is visible flow on the flow meters (which changes when GF manifold off) but just ticks another thing off

Ok that’s great thank you, guessing this isn’t going to fix all my issues though 😂😂

Are these ok to leave ‘open’ then I am guessing. Do I need to manually purge each loop or if I have air locks will the auto air vents clear it all over a period of time?

They were both quite tight I have done that, tightened them and then I have backed them off 720 deg