ᐅ Upgrading underfloor heating with actuators and wireless receivers
Created on: 1 Oct 2020 11:58
A
ashley
Hello, I would like to equip our underfloor heating system with actuators and wireless receivers so that the temperature in the rooms can be controlled using wireless room thermostats. First, a basic question: does the heating manifold also need to be equipped with flow meters for this purpose? Our existing one does not have these meters. A second question: when replacing the actuators, can the old ones simply be removed and the new ones screwed on, or will water leak during this process? Thanks and best regards, Ashley
T
T_im_Norden3 Oct 2020 09:09What does this have to do with the losses?
The system always remains the same, even with radiators: determine the required flow rate for the rooms and control the temperature via the heating curve.
The only thing that changes with higher heat losses is the supply temperature, which increases.
The system always remains the same, even with radiators: determine the required flow rate for the rooms and control the temperature via the heating curve.
The only thing that changes with higher heat losses is the supply temperature, which increases.
Six, sit down.
For the calculation of hydraulic balancing, the structural data of the rooms must be precisely known (especially the heat loss), because otherwise the heating load cannot be accurately determined. A thermal balancing is only the step after next in the entire process.
Thermal balancing compared to hydraulic balancing is like a combustion engine with fuel injection compared to one with a carburetor and choke.
Then there are additional factors where it turns out that an ERR can suddenly be the more efficient solution.
General statements such as "Every underfloor heating system can be regulated especially efficiently without an ERR" or "In most cases, any type of thermostat control is counterproductive for underfloor heating" are simply wrong.
For the calculation of hydraulic balancing, the structural data of the rooms must be precisely known (especially the heat loss), because otherwise the heating load cannot be accurately determined. A thermal balancing is only the step after next in the entire process.
Thermal balancing compared to hydraulic balancing is like a combustion engine with fuel injection compared to one with a carburetor and choke.
Then there are additional factors where it turns out that an ERR can suddenly be the more efficient solution.
General statements such as "Every underfloor heating system can be regulated especially efficiently without an ERR" or "In most cases, any type of thermostat control is counterproductive for underfloor heating" are simply wrong.
Mycraft schrieb:
What is the annual or monthly gas consumption?In the last billing period, we consumed 19,334 kWh of gas for a single-family house with 4 occupants, 165 m² (1,775 ft²) of living space, a total of 12 underfloor heating circuits, and 3 additional standard radiators.Mycraft schrieb:
typical R553D actuator for 7 heating circuits from GiacominiIf I switch to such actuators, do you happen to know what size (screw) they require?Ok, so you have a combined system with two heating circuits: underfloor heating plus radiators, meaning low temperature and high temperature, or are the radiators also low temperature type?
Are you not overheating and controlling everything manually? Am I correct in that assumption?
ashley schrieb:That’s why I already mentioned earlier that you would need someone on site. If I’m not mistaken, it should be 30x1.5. In your position, I would just measure it.
If I switch to these actuators, do you happen to know what size (screw) they need to be?
ashley schrieb:So your current consumption is roughly double (more like triple) that of a modern energy-efficient building according to energy saving regulations.
So, in the last billing period, we used 19,334 kWh of gas for a single-family house (4 people) with 165 m2 (1,776 sq ft) of living space, with a total of 12 underfloor heating circuits and 3 regular radiators.
Are you not overheating and controlling everything manually? Am I correct in that assumption?
Mycraft schrieb:
Low temperature and high temperature I'm not sure about that, but the radiators are usually turned off.
Mycraft schrieb:
If I were you, I would just measure it myself. So, remove a valve and measure the thread height and width?
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