Best flow settings for Daikon heat pump (ASHP) with Dimplex Smart Rads

I, too, have a Daikin ASHP and the control panel seems to be the same too.

I had issues with the rads that were furthest away in the system not heating up and to solve this i balanced the system, by which i mean i tweaked the rad valves (not the trv’s) in a way that from cold all rads warmed up evenly together.  I restricted water flow to the rads nearest the pump, moving the heated water on to the next.  This is time-consuming but worth it as you have to restart the process from cold every time you have tweaked the system until you get all rads to warm up evenly together.

Worked a treat, i also tweaked the trv’s afterwards to turn off the rads in rooms that i didn’t want to get too warm, such as my bedroom (i prefer a cool bedroom, no more than18 otherwise i can’t sleep, far too warm!).

Haven’t explored tweaking the LWT controls at all yet and Weather Comp is enabled

Thanks for sharing this, @akwe-xavante. 

I’d love to understand this a bit more, and get the thoughts of @juliamc and @Boots and Bens. I know @M.isterW doesn’t have a Daikin but perhaps they’d also be interested. 

When you say:

I just don’t understand the process. Is this a one off to find optimised individual rad levels that ensure they all heat up evenly? Is it literally a case of turning the rad valves up and down? How do you know the right adjustments to make? 

If you are finding that one or more rads are heating faster than others and or just not heating up at all or not as much as some then the systems radiators need balancing. 

Balancing the radiators in a system ensures that radiators warm up together evenly. 

Open up / turn all tvr's to their maximum setting, typically 5.

From cold turn heating on and work out which radiators warm up first, you have a radiator valve opposite to the trv, using either an Alan key or a pair of pliers turn the valves on the warmest radiators clockwise 1/4 turn. This restricts the flow of heated water through those radiators and moves it on to those radiators that need more. Turn heating off and let things go cold and start again and repeat until you get all radiators warming up evenly together. The heating system is now balanced and heating up your home correctly. 

With a balanced system then you can use the tvr's to adjust temperatures room to room. 

An example may be that you like a cool bedroom and it's too warm. Turn the tvr to no2, the tvr will turn off that radiator at 15 degrees and the heated water in the system moves the water elsewhere in the system. If no 2 is too cool, turn it up a tad until you find what your happy with.

Turn clockwise to close or restrict water flow. Turn anticlockwise to open or increase water flow. 

Thank you for clarifying, @akwe-xavante. 

@hydrosam may also be interested in this ^^^

Thanks @Tim_OVO 

One I am well aware of, it’s one of the basic things that you want to get right when a new system is installed (and one neither of my installers did…).

If anyone wants to get really geeky on balancing there are a good few articles here. https://www.heatgeek.com/category/balancing/