Reading Rossweiner DE-10-MI004-PTB002 Heat Meter: Guide to Understand Heat Consumption Numbers

Hello, I have a rossweiner DE-10-MI004-PTB002 heat one heat meter. I am completely green and I don't know which numbers indicate the heat consumption. He shares a house with a neighbor, we have 2 of them. He is at home and I am at home. I have a photo taken before the heating season and after and the numbers are different also some measurement is for sure. But which one and how do I calculate how much gas I used to heat the house on the basis of these numbers? Advice as you can.

Those marked with GJ.

Here's the manual.

Thanks for the answer, and especially for the instructions, because that's what I was looking for. How to calculate now how much gas went to heat the house? I was looking in google but I did not find any specific solution. Add something, multiply?

The calorific value of gas is expressed in MJ / m3. You need to find a value for your gas and convert the GJ from the meter. The efficiency of the system, e.g. a boiler system, must also be taken into account.
http://www.igg.pl/1/node/91
https://www.elektroda.pl/rtvforum/topic2690033.html

I found on the website http://oferta.pgnig.pl/czy-jest-gaz-ziemny because we get gas from them, the gas values provided by them. "calorific value - not less than 31.0 MJ / m3 1)". We have a Brotje WBS 22C condensing furnace. According to this website http://www.ogrzewany.pl/product/Kociol-kondensacyjny-EcoTherm-Kompakt-WBS-22-E/?id=1779. The furnace appears to have an efficiency of 109%. The numbers from before the heating season are 0.5512 from October 21 and after - 10.5860 to April 8. According to this page, what you gave the formula to calculate is 31 MJ / (divided by 3600 seconds, i.e. an hour) 3600s = 8.6111 kWh from m3 of gas. And these 8.6111 kWh multiplied by 10.0348? I subtracted 0.5512 from this final value. I don't know if I understood correctly . We also heat water with gas and boil it. I do not know if there is any division into gas used for heating utility water. Surely there is no meter by the gas stove.

The heat consumption is: 10.586GJ - 0.5512GJ = 10.03GJ or 10,035 MJ
10 035 MJ / 31 MJ = 323.7 m3 of gas. Efficiency above 100% will only be provided when several conditions are met, including at full load, with condensing boiler operation, which is not always the case. This is catalog data, not actual data. The conversion above is only approximate, not super accurate.

Not enough data. If you have one storage tank in common and there is no third meter that would count the heat for heating domestic hot water, then any calculations do not make sense.

Added after 4 [minutes]:

eljarkos wrote:

Efficiency above 100% will be only provided that a few conditions are met, including at full load, with condensing boiler operation, which is not always the case.

You have data from a different matrix. With us, the highest efficiency and condensation occur at the lowest loads, and almost always with a properly performed installation. That's almost, it didn't happen this year, and the average annual number is a few days.

I understand, but at least I know how much energy the heaters themselves used, and this already gives a resultant sum. Anyway, thanks for your interest and answer.

Heating water is sometimes a big part of the bill. In one family, two people use the shower briefly, in the other four people use a large bathtub. If you had at least a meter accounting for hot water consumption, you will determine the gas consumption and the distribution ratio during the summer, when the heating is turned off. There will of course be an error due to temperature differences among others, but you will be closer than now.

We'll do that too, thanks. I do not know if I can ask such a question on the same topic, namely. In the above-mentioned oven, a function is activated from time to time, which heats the water to about 60 degrees C, maybe a little more. He does it cyclically, that is, several times a day. I entered the specialist function and there saw a setting something like "tray cleaning"? I do not remember exactly. This function was set to 3, I did it to 1. In the further DHW settings I found it as if the main cleaning was done on Sundays. And here I am wondering what to do so that the stove does not heat this water to more than 60 degrees for these few minutes, and it does it only once a week. I know that the translators are not clear because I do not have a display in front of me, but maybe you know a little about it and maybe you know what I could do with it? This water heating is used to get rid of bacteria and viruses from the tank, and I am aware of this. The temperature is set to 45, because that's enough for me and the stove turns on between 8am to 9am and 6pm to 7pm and it's "exactly" to put it this way. But despite this, I "caught" him just heating the water on a weekday. Does the stove have any additional function of heating water constantly?

It should have the tank thermal disinfection set. The main threat is legionella bacteria. I will not write anymore, because I have already done it several times. They reproduce perfectly up to 55 °. To knock them out, you need a minimum of 60 ° and the circulation is on, so that the temperature is reached in the entire volume of the reservoir and installation. After reaching this temperature, you open the taps, and most of all the showers, and disinfect the rest. In my opinion, and in a large part of the instructions, one such procedure a month is enough. I think it's over-zealous every day. Look in the settings, it should be changeable. It would be good if the time could be set so that there is no risk of burns to children and other unaware people.

Refer to the manual for disabling this feature, and do it manually once a month at a convenient time.

Hello
Can anyone recommend me a heat meter with wired M-BUS? It can also be a water meter; the device needs a protocol on the table to learn.