Samsung ASHP owners what have you set your weather compensation to?
Interested to see what others are using (while realising its completely dependent on your house, the size of the unit etc)
Mine currently is low temp - 2 (2011) Max temp 15 (2012)
UFH highest flow temp 40 (2021), lowest 28 (2022)
Rads highest flow temp 40 (2031, lowest 28 (2032)
Currently resetting Flow temps as per my thread adjusting lockshield valves.Posted by: @cyrusirInterested to see what others are using (while realising its completely dependent on your house, the size of the unit etc)
Mine currently is low temp - 2 (2011) Max temp 15 (2012)
UFH highest flow temp 40 (2021), lowest 28 (2022)
Rads highest flow temp 40 (2031, lowest 28 (2032)
Low temps -5c for Scotland
Max temps 15c
It has been 50c for years but experimenting after Lockshield settings with firstly 46c Now at 44c
Over the last 3 days of consistant outside temps and adjustment to make three rooms 2 degrees below Thermostat setting of 22c average the cost hast gone up from £10-£12 . Ill be giving it another day but its not working so far.
@cyrusir I have had a Samsung HP since 2023 but January 2025 is the first month we have had -2C and lower temperatures to enable me to finally trim my weather curve (water law in Samsung speak).
Mine is currently:
OAT 15C - Flow temp 37C
OAT -2C - Flow temp 52C
My 12 Kw unit becomes a little unstable with flow temperatures lower than 37C plus the compressor cycles more. As Mr Hendra once said it can only modulate down to 40% its max capacity before the compressor starts cycling
Regards
5 Bedroom House in Cambridgeshire, double glazing, 300mm loft insulation and cavity wall insulation
Design temperature 21C @ OAT -2C = 10.2Kw heat loss
Bivalent system containing:
12Kw Samsung High Temperature Quiet (Gen 6) heat pump
26Kw Grant Blue Flame Oil Boiler
All controlled with Honeywell Home smart thermostat
Not sure if this is working , smaller rooms a bit colder and larger a degree off the 22c .
Having said that I observe that pump is on but only showing 1.5kw consumption on smart meter, now 2kw but only shows it’s cutting consumption but achieving target, which has been on since 3.30pm .
I'm running a 'flat' WL curve of 32C (32C @ 15C OAT; 32C @ -2C OAT), and I then manually adjust LWT up and down on the controller heating screen. At the moment I'm run 32C during the day, set back to 30C overnight and boost to 35C during the cheap price Octopus Cosy slots, but I can tweak this depending how hot/cold the house feels.
- 21 Forums
- 1,962 Topics
- 42.6 K Posts
- 42 Online
- 2,275 Members
Join Us!
Heat Pump Dramas?
Thinking about installing a heat pump but unsure where to start? Already have one but it’s not performing as expected? Or are you locked in a frustrating dispute with an installer or manufacturer? We’re here to help.
✅ Pre-Installation Planning
✅ Post-Installation Troubleshooting
✅ Performance Optimisation
✅ Complaint Support (Manufacturer & Installer)
Latest Posts
-
RE: Newbie out of her depth – Samsung AE120RXYDEG 12kW heat pump
OMG, the attached schematics (even with incorrect room ...
By BAMi , 32 minutes ago
-
RE: Setback savings - fact or fiction?
@cathoderay I see you are continuing to misquote from t...
By SUNandAIR , 58 minutes ago
-
RE: Samsung Gen 7 R290 12kW is not behaving how I expected
So I turned my thermostats down last night And w...
By Joshua , 1 hour ago
-
What is the best strategy for operating a very oversized heat pump?
As the title really. There are at least three live thr...
By JamesPa , 2 hours ago
-
RE: SolarPV tables / online calculator
I'd be interested what others find whilst using that we...
By Majordennisbloodnok , 2 hours ago
-
Heat Pump Sizing & Installation Costs
I’m doing some research for an upcoming article and pod...
By Mars , 2 hours ago
-
Volumisers in Heat Pump Systems: Does Placement Matter?
The debate over buffer tanks in heat pump systems has b...
By Mars , 3 hours ago
-
RE: F.788 Building circuit pump reports internal fault - Vaillant Arotherm
Guess I have to wait for engineer visit. I really hope ...
By jeegnesh , 14 hours ago
-
RE: Act now to defer the UK road tax increase on EVs
@majordennisbloodnok Damn right sir. my attempt at iron...
By Jancold , 16 hours ago
-
RE: ASHP and heating issues in new build house
That’s good gives you more capacity. It made me think, ...
By Terry1812 , 18 hours ago
-
RE: Seewet manhole cover within r290 exclusion zone
Thanks! I asked Vaillant, and they say I should be fi...
By dbrb2 , 20 hours ago
-
Looking for the Grant Aerona 3 setting to turn off completely at 20 OAT
I'm running my Aerona 3 on WC and the 'warm end of that...
By damonc , 21 hours ago
-
RE: Do I just go with the lowest quote for my heat pump?
So after signing in Sept in two weeks the install may s...
By Jancold , 22 hours ago
-
RE: Victorian Semi Retrofit / Extension ASHP and UFH Advice
When you are renovating is always a good time, as it ma...
By JamesPa , 1 day ago
-
RE: Just one room not reaching desired temperature
Looks like this issue is now resolved. Aira installed a...
By ChandyKris , 1 day ago
-
There have been several people on the OpenEnergyMonitor...
By RobS , 2 days ago
-
RE: Say hello and introduce yourself
Good point @jamespa But that probably strengthens @ch...
By Transparent , 2 days ago
-
RE: Towel rails. An unexpected final hurdle
@jamespa Beware; the use of the term ‘WC’ might lead to...
By Toodles , 2 days ago
-
RE: Visit a Heat Pump sessions.
Congratulations @toodles, that's a fantastic result. We...
By Old_Scientist , 2 days ago
Latest Topics
-
Heat Pump Sizing & Installation Costs
By Mars 2 hours ago
-
Volumisers in Heat Pump Systems: Does Placement Matter?
By Mars 3 hours ago
-
SolarPV tables / online calculator
By MichelleC 10 hours ago
-
Samsung Gen 7 R290 12kW is not behaving how I expected
By Joshua 22 hours ago
-
By Toodles 2 days ago