Samsung Gen6 Room temp vs Outlet temp
I've been using my samsung gen6 with a room temp control, I just set the room temp on thermostat to 28 degrees and have water law set. Heating should run all the time and keep the house at the right temp. I don't use the option to control the outlet temp, which is another way of doing this because I think someone on here said it doesn't work very well, but I can't remember who.
Anyway I was thinking of changing to water outlet temp control, mainly so I can adjust the outlet temp manuall for different temps outside and get a feel for how warm the house gets. I want to do this so I can get a feel for how I should set up my water law fs vaules. Is this a waste of time, does switching to water outlet temp control mess up my scop or ruine my heatpump?
Samsung Gen6 8kw ASHP in a two bed victorian mid terrace.
Hi, yes it seems to be the way forward with heat pumps. It's hard to get away from the on/off three time a day as with the old boiler regime. I've set mine to 19° - hot enough for us. Our water temp was 50° but found this too hot and have reduced it to 47° - see how that goes.
Posted by: @ecobakerAnyway I was thinking of changing to water outlet temp control, mainly so I can adjust the outlet temp manuall for different temps outside and get a feel for how warm the house gets. I want to do this so I can get a feel for how I should set up my water law fs vaules. Is this a waste of time, does switching to water outlet temp control mess up my scop or ruine my heatpump?
@ecobaker Are you using the thermostat in the Samsung wired remote controller? If so, the best way to get your weather compensation settings right would be to just tweak FSV settings up and down. There isn't an easy shortcut.
Using water outlet control might just confuse you as the setting won't change automatically with OAT, which will skew your results.
However, if you can use an external thermostat, then you can make use of the offset button to easily increase or decrease the compensation curve (line) by plus or minus 5. Once you are happy that a particular offset is right for you, you can then change the FSV values by the same amount.
To set up weather compensation or water law. You start with a base curve and them manipulate it over a period of time.
Warm weather setting.
At 20 deg outside set heat pump to min flow temperature allowed by heat pump, usually 25 degs, sometimes 20. The hot end is set to your design flow temp and design outside temperature this should have been supplied by your installer. Or set to 45 and -3 for radiators and 35 for just UFH.
So let the system run for 24 hrs, with all thermostats and trv open or set to 24+.
Now if the house is too hot, reduce only the cold outside flow temp down 1 to 2 degs, retry for another 24 hrs. If too cold up the cold outside end and do forth. Once you get ok. You are just about there.
If you bouncing off thermostats your flow temp is way to high.
Hi
Thanks for the update.
I have been testing the system over a few weeks.
At the moment I've reached these settings:
14° & -2°
32° & 45°
Seems to be ok.
I swapped the cheap, hard to read and set Neomitis thermostat with my old Hive one. I know it's just a fancy switch but now I can see what's going on from my phone & adjust things remotely.
I've programmed the stat temp at 19.5° and that seems ok.
I've got a Grundfoss pump (UPM3) and was considering getting the pwm cable but there's mixed opinions on here..is it worth it g if so what the connections?
Again thanks for your help.
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