Hello everyone,
I have a question for the heating specialists before I bother my heating technician or electrician with my limited knowledge about thermostats.
I have underfloor heating in the house, controlled by room thermostats, and the heating system is a brine-to-water heat pump. Currently, all thermostats are set to about 20°C (68°F), and the room temperature matches that.
However, the floor, especially in rooms with tiles (bathroom, entrance, fireplace room, etc.), feels very cold. Is it possible that the heating system isn’t providing enough flow—at least not enough to warm the floor properly—when the thermostats indicate the room temperature is fine?
Thanks in advance for your answers.
Best regards,
Stephan.
I have a question for the heating specialists before I bother my heating technician or electrician with my limited knowledge about thermostats.
I have underfloor heating in the house, controlled by room thermostats, and the heating system is a brine-to-water heat pump. Currently, all thermostats are set to about 20°C (68°F), and the room temperature matches that.
However, the floor, especially in rooms with tiles (bathroom, entrance, fireplace room, etc.), feels very cold. Is it possible that the heating system isn’t providing enough flow—at least not enough to warm the floor properly—when the thermostats indicate the room temperature is fine?
Thanks in advance for your answers.
Best regards,
Stephan.
B
Bauexperte26 Sep 2013 22:20Good evening,
- Outdoor temperature controlled system flow temperature (heating curve, primary)
- Room temperature with underfloor heating (individual room control), with radiator thermostat valves
- System return temperature monitoring (modulation of the heat generator output, flow adjustment of the heating circuit pump)
I would translate it as follows:
Flow temperature => flow temperature
Individual room control (IRC) => individual room control
Radiator (heater) => radiator
Thermostat valves => thermostat valves
Return temperature => ventilation system
No guarantee, but with
Rheinland regards
- Outdoor temperature controlled system flow temperature (heating curve, primary)
- Room temperature with underfloor heating (individual room control), with radiator thermostat valves
- System return temperature monitoring (modulation of the heat generator output, flow adjustment of the heating circuit pump)
I would translate it as follows:
Flow temperature => flow temperature
Individual room control (IRC) => individual room control
Radiator (heater) => radiator
Thermostat valves => thermostat valves
Return temperature => ventilation system
No guarantee, but with
Rheinland regards
It’s probably the thermostats; in the bathroom, the temperature is still around 22°C (72°F) even though I set it to 30°C (86°F) the evening before last. With underfloor heating, it shouldn’t take this long to reach the set temperature.
In the office (testing the other way), I tilted the window open and set the heater to 15°C (59°F). Still, it’s about 21-22°C (70-72°F).
Outside temperatures yesterday were 17°C (63°F) during the day and 8°C (46°F) at night (11:00 PM).
In the office (testing the other way), I tilted the window open and set the heater to 15°C (59°F). Still, it’s about 21-22°C (70-72°F).
Outside temperatures yesterday were 17°C (63°F) during the day and 8°C (46°F) at night (11:00 PM).
P
perlenmann27 Sep 2013 09:55Even if you set your thermostats to 30 degrees, it doesn’t mean the heating system will actually deliver that temperature! The thermostat will simply stop turning off. What does your supply temperature show? Given the current conditions, it’s unlikely to be above 25 degrees, so logically, you can never get more than the supply temperature in the rooms.
(For understanding: In winter, for example, with a 35-degree supply temperature, you also don’t have 35 degrees inside the room!)
(For understanding: In winter, for example, with a 35-degree supply temperature, you also don’t have 35 degrees inside the room!)
OK, that’s understandable.
What about in the office? If I want lower temperatures.
15°C (59°F) is already a bit extreme, it was only supposed to be for testing, but when I’ve had the window tilted open for almost two days (it’s a tilt-and-slide door, so not a small window) and the heating still keeps it at 20°C (68°F), that’s hard to understand.
To me, that means the heating is running even though it shouldn’t.
What about in the office? If I want lower temperatures.
15°C (59°F) is already a bit extreme, it was only supposed to be for testing, but when I’ve had the window tilted open for almost two days (it’s a tilt-and-slide door, so not a small window) and the heating still keeps it at 20°C (68°F), that’s hard to understand.
To me, that means the heating is running even though it shouldn’t.
P
perlenmann27 Sep 2013 10:41I don’t quite understand your question?!
You want to have 15°C (59°F) in the office? You have the heating off, windows open, and it still stays at 20°C (68°F)?
In principle, you can’t really have cold rooms in a building compliant with energy saving regulations unless the heating is turned off everywhere. But with the windows open, it should definitely cool down.
Just as a side note: one of our electrical installers swapped the actuators by mistake during a defect. As a result, one room was always heating while the other stayed cold. Maybe something similar happened in your case?
You want to have 15°C (59°F) in the office? You have the heating off, windows open, and it still stays at 20°C (68°F)?
In principle, you can’t really have cold rooms in a building compliant with energy saving regulations unless the heating is turned off everywhere. But with the windows open, it should definitely cool down.
Just as a side note: one of our electrical installers swapped the actuators by mistake during a defect. As a result, one room was always heating while the other stayed cold. Maybe something similar happened in your case?
P
perlenmann27 Sep 2013 11:02Set all to zero or minimum. Then set one room at a time to maximum. Observe which actuator moves up and check if it belongs to the correct heating circuit.
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