Hello,
the first four months of "living" in our new home are over. We are very happy to have chosen a ventilation system (Zehnder 450). Our house has a living area of 240 m² (2,583 sq ft) and is heated with gas (Buderus Logamax plus), and there is a solar thermal system for hot water. Additionally, we have a tiled stove in the living room.
I turned on the heating exactly four weeks ago and have been tracking the gas consumption. During this time, 125 m³ (4,413 cu ft) of gas was used. October was rather warm. The rooms tend to be too warm (23°C / 73°F), even though the thermostats for the underfloor heating are all set to the lowest setting (level 1).
The desire to make it "cozy" with the tiled stove just doesn’t arise.
What could be going wrong here?
Best regards,
Barossi
the first four months of "living" in our new home are over. We are very happy to have chosen a ventilation system (Zehnder 450). Our house has a living area of 240 m² (2,583 sq ft) and is heated with gas (Buderus Logamax plus), and there is a solar thermal system for hot water. Additionally, we have a tiled stove in the living room.
I turned on the heating exactly four weeks ago and have been tracking the gas consumption. During this time, 125 m³ (4,413 cu ft) of gas was used. October was rather warm. The rooms tend to be too warm (23°C / 73°F), even though the thermostats for the underfloor heating are all set to the lowest setting (level 1).
The desire to make it "cozy" with the tiled stove just doesn’t arise.
What could be going wrong here?
Best regards,
Barossi
That looks like the RC 310. Try searching for the installation and operating manual for professionals Buderus RC310.
The heating system is probably running on the default settings, which is clearly incorrect.
Please study the manual THOROUGHLY. You will then need to access the service menu of the heating system, where a lot of things can go wrong.
You can enter this menu by pressing and holding the "Menu" button on the right control panel for about 5 seconds.
Set the heating curve roughly as follows:
Turn all thermostats in the rooms to maximum (the heating curve can be lowered beforehand).
Then lower the heating curve until one room is no longer warm enough. After that, increase the heating curve slightly again.
Note: It is best to do this when the outdoor temperature is below 0°C (32°F) and there is no sun. Also, underfloor heating takes about 24 hours to show effects inside the house. So patience is key here.
After reading the manual and discovering the available settings, you can post your current settings here.
The heating system is probably running on the default settings, which is clearly incorrect.
Please study the manual THOROUGHLY. You will then need to access the service menu of the heating system, where a lot of things can go wrong.
You can enter this menu by pressing and holding the "Menu" button on the right control panel for about 5 seconds.
Set the heating curve roughly as follows:
Turn all thermostats in the rooms to maximum (the heating curve can be lowered beforehand).
Then lower the heating curve until one room is no longer warm enough. After that, increase the heating curve slightly again.
Note: It is best to do this when the outdoor temperature is below 0°C (32°F) and there is no sun. Also, underfloor heating takes about 24 hours to show effects inside the house. So patience is key here.
After reading the manual and discovering the available settings, you can post your current settings here.
Hello,
thank you very much! I will follow Joe’s advice. I just changed the building type to "heavy" in the service menu. It was set to medium before. We have sand-lime bricks with a brick veneer. That should fit better.
I also adjusted the design temperature from 47°C (117°F) (default) to 40°C (104°F).
In my opinion, this is the final temperature (flow temperature) and thus defines the gradient. This parameter can be adjusted, right?
@Nordlys: I think this is a very "individual" matter. I would say, if you want it to be done properly, I have to take care of it...
thank you very much! I will follow Joe’s advice. I just changed the building type to "heavy" in the service menu. It was set to medium before. We have sand-lime bricks with a brick veneer. That should fit better.
I also adjusted the design temperature from 47°C (117°F) (default) to 40°C (104°F).
In my opinion, this is the final temperature (flow temperature) and thus defines the gradient. This parameter can be adjusted, right?
@Nordlys: I think this is a very "individual" matter. I would say, if you want it to be done properly, I have to take care of it...
The heating engineer only needs to set a basic configuration and properly instruct the operator. However, this is usually not done. I know only one who really takes good care of it.
I claim that for a new build, you can set the design temperature to 35°C (95°F) without any problems. This determines the slope of the curve. But it’s okay. Proceed step by step. There is another parameter that describes the base point. I’ll have to check that later.
I claim that for a new build, you can set the design temperature to 35°C (95°F) without any problems. This determines the slope of the curve. But it’s okay. Proceed step by step. There is another parameter that describes the base point. I’ll have to check that later.
K
Knallkörper31 Oct 2017 10:22If the room temperature regulator (RTR) is set to the left stop (minimum), and the room temperature is 22 or even 23 degrees Celsius (72 or 73 degrees Fahrenheit), then the control valves in the manifold are closed. Changing the heating curve or the flow temperature has no effect in this case.
If we heat our stove properly once, the living room stays too warm for 3 days, even without heating.
If we heat our stove properly once, the living room stays too warm for 3 days, even without heating.
Knallkörper schrieb:
If the room temperature regulators (RTR) are set to the minimum (left stop) and the room temperature is 22 or even 23 degrees Celsius (72°F or 73°F), then the control valves in the manifold must be closed. Changing the heating curve or supply temperature therefore has no effect.
When we properly heat up our stove once, the living room stays too warm for three days. Without any heating.Hello,
is it correct that the valves are then completely closed? The floor tiles were partially warm, even though the regulator was set to 1.
It’s understandable that it gets too warm with the stove, but where does the gas consumption for 100 m² (1,076 ft²) come from? (There was no frost in October and daytime temperatures were usually warm, around 15°C (59°F))
Best regards, Barossi
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