System Supply Line Temperature

[Alphaemef]

Hi Guys. Tremendous work with this HA integration, its absolutely a wonderful tool, and extremely valuable.

I have a Thermia Atlas 18, registered in the custom component as Inverter Duo. Most is working fine, but the "system Supply Line Temperature" is consistently showing 200 degrees celcius. In the API it shows an accurate temperature (24 degrees). Am I using the wrong sensor parameter name or did I mess some setting up?

[ejansson88]

I have the same problem as you, havent found any solution yet, please post if you find out whats wrong

[BarbaGrump]

Same here(Atlas 18). Tried to set "Target sensor" in Thermostat card to external thermometer, but no success .

[Alphaemef]

Found something that may solve this. The "Condenser Out" temperature and "Condenser In Temperature" matches pretty well with "Supply Line" and "Return Line".

Im not sure if there are separate thermometers, but this is within 0,5-1 degrees of the actual supply and return line. So I'm using those for now.

[BarbaGrump]

Excelent find! May I ask how you are using te sensors? I've tried to set the "Target Sensor" in the generic thermostat card, but no success.

[BarbaGrump]

Right...think first, ask later... If anyone else wondering about this...to get the condenser_in_temperature to show in the generic thermostat card in HA:

edit the file ../custom_components/thermiagenesis/const.py to match the following:

"heat": {
    ATTR_LABEL: "Heat",
    # ATTR_CURRENT_TEMPERATURE: ATTR_INPUT_SYSTEM_SUPPLY_LINE_CALCULATED_SET_POINT
    # ATTR_CURRENT_TEMPERATURE: thermiaconst.ATTR_INPUT_ROOM_TEMPERATURE_SENSOR,
    ATTR_CURRENT_TEMPERATURE: thermiaconst.ATTR_INPUT_CONDENSER_IN_TEMPERATURE,
    ATTR_TEMPERATURE: thermiaconst.ATTR_HOLDING_COMFORT_WHEEL_SETTING,
    ATTR_MIN_TEMP: 10,
    ATTR_MAX_TEMP: 40,
    ATTR_ENABLED: thermiaconst.ATTR_COIL_ENABLE_HEAT,
    ATTR_DEFAULT_ENABLED: True,
    KEY_STATUS_VALUE: "Heat",
},

and restart HA. Häpp!

[BarbaGrump]

However...when boiling hot water, the condenser in temp goes WAY up, so then again...this might not be the answer after all...

[Alphaemef]

Yeah I think the only way to get around is, is by installing a TP sensor and feeding it into the thermostat card or by removing the tp showing altogether.

There are no other sensors in the thermostat that provide anything meaningful.

[dd1982]

On the physical side of things a standard pump only has sensors for condenser in and condenser out - after the condenser the now hot water is either routed to the system supply line or through the tap water tank using a valve. If you want the actual system supply line temperature at all times you need an additional sensor connected to the outgoing supply line. Those are normally only installed externally when a pump is combined with external heat sources as without an external heat source the supply line temp is (more or less) the same thing as the condenser out when the pump is in heating mode. While in tap water mode the condenser temps say nothing about your heating systems supply and return line temps as the water from the condenser is going elsewhere.