Hi, Anyone got any good suggestions on a networkable trv?
We currently have upstairs of our house with silvercrest digital stand alone trv's thrown on as a temporary measure while we were getting the house built. I have a network cable ran to a box next to each radiator point and each of the rooms already has a thermometer that the control computer can read in realtime, and I'd like to bring them all under central control. The silvercrest's have a connection port on the side but its completely undocumented, not even listed in the manual, but I'll split one apart and have a probe round but I can see nothing about hacking one on the net. Probably its easier to buy a unit that can be hacked about and just have them as emergency spares in a drawer.
I see the Honeywell HR20E can be reflashed to make the changeover points change via rs232, and I can easily add a rs232->ethernet board inside a backbox per unit, but it makes me nervous as new firmwares are mentioned, with changing processors etc and in my experience that means if you dont buy the same revision as the authors it wont work.
Protocol has to be documented, and I don't want anything that has some overreaching "intelligent controller" in between my automation system and the trv's. Got all that already, I just want something I can tell what temperature I want that radiator to be when I want it.
Is there a trv value out there thats documented, easy to interface to in rs232 or even ethernet (not wireless) so I can send it new temperature points?
We currently have upstairs of our house with silvercrest digital stand alone trv's thrown on as a temporary measure while we were getting the house built. I have a network cable ran to a box next to each radiator point and each of the rooms already has a thermometer that the control computer can read in realtime, and I'd like to bring them all under central control. The silvercrest's have a connection port on the side but its completely undocumented, not even listed in the manual, but I'll split one apart and have a probe round but I can see nothing about hacking one on the net. Probably its easier to buy a unit that can be hacked about and just have them as emergency spares in a drawer.
I see the Honeywell HR20E can be reflashed to make the changeover points change via rs232, and I can easily add a rs232->ethernet board inside a backbox per unit, but it makes me nervous as new firmwares are mentioned, with changing processors etc and in my experience that means if you dont buy the same revision as the authors it wont work.
Protocol has to be documented, and I don't want anything that has some overreaching "intelligent controller" in between my automation system and the trv's. Got all that already, I just want something I can tell what temperature I want that radiator to be when I want it.
Is there a trv value out there thats documented, easy to interface to in rs232 or even ethernet (not wireless) so I can send it new temperature points?
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