Hello,
Maybe I am wrong or maybe I don't know how to use the Climate automation on Fibaro HC2 together with Fibaro TRV (Radiator Termostat Head + sensor) but I consider the heating algorithm very strange...
Here is my problem and what is happening with my automation scheme.
I am using the following:
- Fibaro HC2 - 4.160
- Gas central heating
- Fibaro TRV (radiator head thermostat with external temperature sensor)
- Danfoss Link RS Z-Wave (Room thermostat and temperature sensor)
- VD - Heating Override v1.3 - @Dave Harrison
- Scene 1 - Multi-room Call for Heat - @Dave Harrison - local threshold = 0.3
- Scene 2 - Room Thermostat Override - @Dave Harrison
- Scene 3 - Main scene for time based events control {v 1.2.5} - @Sankotronic
- Three rooms:
1. Bedroom: Fibaro TRV + external temp sensor + Danfoss Link RS Z-Wave (set as main temperature sensor and main thermostat)
2. Kids room: Danfoss Link RS Z-Wave (set as main temperature sensor and main thermostat). I have NO radiator thermostat!
3. Living room: nothing
I have set the heating panel to 23 degrees all day/night (24 hours) in all rooms.
Because of this, Fibaro TRV is automatically set at 23 as permanent.
If in Bedroom I have 23 C, the Fibaro TRV valve is OFF, Heating system OFF. Until now all normal.
But, if in Bedroom I have 22.4, the valve is still OFF (!) or almost - gas central heating is started. I know this because the Bedroom's radiator (Fibarot TRV) is cold and the Kids room radiator (without valve) is hot.To make it warmer, I have to set the Fibaro TRV at 24 C. Only then, after I hear the noise from TRV's motor, the radiator become warmer. But... is not enough.
Small flames meaning radiator valve opened too little
Big flames meaning radiator valve wide opened.
Think only about heating the Room 1: Bedroom.
So, the first problem is that the valves are closing "progressive" in a wrong way explained below.
It is wrong because if I have the heating panel set at 23 C and the temp sensor measure 22.4 C, the valve is opened too little in order to rise the room temperature to 23 C. Same if I want to make 24 C when temp sensor measure 23 C. The radiator is barely lukewarm and unable to rise the room temperature. In this time, the central gas is running (consuming gas and electricity).
To become HOT I have to set the thermostat (or even the valve radiator) at 26 C (or more). I can hear again noise for opening valve and radiator become hot.
As high I set the Thermostat temperature, as more the Fibaro TRV is opening.
The correct way is to open the radiator valve (Fibaro TRV) as much it can and when the measured temperature (by temp sensor) will become closer to the set temperature (by thermostat), the valve will close (progressive to full close).
In this way will be avoided to run the gas central without heating the radiator because of closed valve...
Or as I've started... maybe I am wrong