I heat the weekend house, so I need to start boiler first (TH Origin, one for the house), keep it running and then I can regulate separate rooms via Thermostatic Radiator Valve.
I understand your setup: one boiler to heat the whole house, and many TRVs to control the temperature of each room, one TRV for one room.
But I donāt quit understand why are you using TH Origin to control the boiler? Should it be the temperature sensors from TRVs to decide whether the boiler should be turned on or off?
0.5 degrees is too much of a deviation because the floor is cold and needs to be heated for a long time. The best option is to set the tolerance to at least 0.1 degree.
It is. I use temperature sensors from rooms, which are on the other side then the radiator and give more accurate temperature reading in old house than TRV.
Reason for TH Origin is that I need āDry Contactā to switch boiler on/off (in house basement). I use temperature from TH Origin to measure temperature of water flowing back from radiators, to have feedback that everything works just fine. But TH Origin is operated by scenes now, but I plan to use Thermostat once ready.
Yes, thatās right. This scheme can be used for other heating systems. If you made a switch so that the user could choose whether to use the scheme I propose or the one you use.
thought it was a classic solution for heating what you have. How do we have something similar.
Turn on the heating using the above procedure so much more.
Open the valve for the given room. use a classic servo valve for 230v and it is controlled via your zigbee relay. simple solution that works very well.
Currently, only one device can be added to the heating control, which should be activated when the temperature drops below the set temperature. It is necessary to be able to add more devices because the temperature control must turn on the heat pump and open the servo valve + this logic:
So logic could be:
If any of the readings from the thermometers is below 20 degree, then D1 ON the heat pump.
Only if all of the readings from the thermometers are above 20 degree, then TURN OFF the heat pump.
You have only one smart device like ZBMINIR2 to actually turn on or off the heat pump, right?
Hello, I currently have a thermostat set up on my NS Panel Pro where a THR320D controls my boiler, with a SNZB-02D as its temperature sensor. This works well on its own.
Iāve just bought some TRVZBs, Iāve set up schedules for them in the ewelink app, but theyāre only useful as temperature ālimitersā at present. If the room gets too hot, the valve closes and the room is no longer heated. If the room gets too cold, the valve opens, but if the boiler isnāt on, nothing will happen. I was going to set each one up as a thermostat on the NS Panel, but from reading this forum, I now understand that this may not work.
It would be nice if I could add multiple temperature sensors to a thermostat, with each having its own heating schedule. When any sensor calls for heat, the boiler turns on, if none of the sensors are calling for heat, the boiler switches off.
Iām trying to convince Sonoff to allow the addition of additional devices that can be started when the heating is turned on. In your case, it would be ideal if the thermostat itself turned on the boiler and opened the head on the controller. I solve this problem with heat pumps, boilers and the like
The named SNZB-02s are bound to the corresponding TRVZBs. The THR320D is using āSNZB-02P Hallwayā as its temperature sensor, which is set at 19.5c, so (as expected) the boiler isnāt on. I could add a new thermostat for each TRVZB, but I may encounter the problem described here:
The logic described here would solve this problem for me, if it applies to each sensorās set temperature rather than a single temperature for the whole house (i.e. if any sensor is below its set temperature, turn the boiler on, and if no sensor is below its set temperature, turn the boiler off):
My only problem with this is that Iād set smart schedules for each TRV, and Iād also have to set each one up as a thermostat in my NS Panel with another schedule, which seems inelegant.
Would it be possible to link the TRVZBs to a thermostat in the NSPanel, so Iād only have to set the smart schedule for the TRVZB and not add them as new thermostats? The ewelink app/NS Panel knows that the set temperature hasnāt been reached, as seen below:
Personally I believe that we are pushing Michael to many steps forward. Maybe we can focus to make a simple thermostat works stable and logically. Then we can suggest about multi pumps, spaces and valves. I think we confused him and we are loosing the very basic. NSpanel pro cannot stand up as a basic heater thermostat yet! That is only my personal friendly opinion
Sonoff has never offered the features youāre asking for and describing. So this is not related to a malfunction. Weāre trying to make functional the things that should already be provided and operating correctly ā which they currently are not. After this, Sonoff will review the situation for potential upgrades.
