Posted by: @derek-m

Posted by: @rsk14

Hi, just had a 12kw Samsung installed, to find the most economical way to run the system without having to take out a mortgage to pay for the electricity. This site is great apart from the fact that the majority of things you are talking about such as flow temperatures, weather compensation control and so on mean absolutely nothing to me lol. Do I need to know these things? My husband has no interest what-so-ever, so all up to me! Thank you in anticipation

Hi RSK14,

Welcome to the forum, don't worry we will have you talking like a pro in no time. 😎 

The water flow temperature, as the name suggests, is the temperature of the water flowing out of the ASHP after being heated. The water return temperature is the temperature of the water going back to the heat pump to be reheated. There is normally a difference in temperature (Delta T) between flow and return of about 5C to 8C, the flow obviously being the hotter of the two. Together with the rate of flow of the water in litres per minute, the Delta T is a measure of how much heat energy has been transferred from the heat pump into your home.

Weather compensation is a technique used to try to keep a fairly constant temperature within your home, under varying weather conditions. A sensor is used to measure the ambient air temperature and send a signal to the controller. If the controller sees that the outside air temperature is starting to fall, it automatically increases the water flow temperature to provide more heat energy into your home, and thereby counteracts the increased heat demand as the heat loss increases due to the falling ambient air temperature.

As they say a picture is worth a thousand words, so I suggest that you look at the weather compensation curves in your manual, which hopefully will make everything as 'clear as mud'. 😮 

Unfortunately, Samsung doesn't make things as clear as mud.

@prjohn 

We have 'special' mud in Yorkshire, it is crystal clear. 😋 

Samsung User Manual

https://drive.google.com/file/d/16kzHvF-HnT-d338ZIs2QrmWozUYcKAsq/view?usp=sharing  

@prjohn Not really touching the settings apart from the water temperature. I have a hive thermostat connected to the system. Just wondering what you have it set on at night? Do you leave it on the daytime temperature or lower it? Thanks

@rsk14 Currently I have my thermostat set at 21deg with all radiators TVR's fully open. This keeps the house comfortable for over 24 hours. External temperatures averaging 3deg. I did have the thermostat in the living room in the clement months this kept the living room comfortable without compromising the rest of the house. In the colder weather, the heating dynamics changed which resulted in a colder house. I moved the thermostat to the hall which solved the problem without changing the thermostat values. The house now has an even heat distribution. 

@prjohn OK, thanks, just trying this having it on 24/7, although with it being so mild, it doesn't tend to be on much during the day. I have the thermostat in the little used dining room on the window sill, set at 19 degrees, this keeps the house comfortable for us, as we both work from home (even without covid). Our current usage is about 25-27 kw for last week. So will be interesting to see the difference with it on 24/7

@rsk14 25-27kw of energy used it must be very warm where you are or you have a well-insulated house. My usage was 132kwh with an average weekly temperature of 3 deg. 

Posted by: @rsk14

...I have the thermostat in the little used dining room on the window sill, set at 19 degrees, this keeps the house comfortable for us, as we both work from home (even without covid). Our current usage is about 25-27 kw for last week.

Do you mean 25-27 kw for the whole week ?? That's what mine's been using in a day.

Posted by: @rsk14

@prjohn OK, thanks, just trying this having it on 24/7, although with it being so mild, it doesn't tend to be on much during the day. I have the thermostat in the little used dining room on the window sill, set at 19 degrees, this keeps the house comfortable for us, as we both work from home (even without covid). Our current usage is about 25-27 kw for last week. So will be interesting to see the difference with it on 24/7

 

Is that per day?

Sorry yes that is per day, in my dreams for it a week 

Posted by: @rsk14

@prjohn OK, thanks, just trying this having it on 24/7, although with it being so mild, it doesn't tend to be on much during the day. I have the thermostat in the little used dining room on the window sill, set at 19 degrees, this keeps the house comfortable for us, as we both work from home (even without covid). Our current usage is about 25-27 kw for last week. So will be interesting to see the difference with it on 24/7

 

I note you have your thermostat on the window sill, that is not the best place for it. Your thermostat would be better placed away from the windows, drafts, and preferably halfway up a wall. 

Finally (fingers crossed) getting our MMSP monitor fitted tomorrow, is there anything I should know or ask about this? Thanks - still trying to get my head around all this.