Hey Folks. I’m looking for a little bit of guidance here to make sure I’m not going to blow things up.
I just a 12K gal inground saltwater pool installed. I have a Hayward H250FDN Heater. I’m a heavy user of Home Assistant and quite adept at automating things so I want to automate my heater.
My current working idea is to get 3 DS18B20 temperature sensors to measure ambient air temp, intake, and return temperatures. I’d then use a relay to control the Hayward heater on/off and Home Assistant to control the temperature set points and pump on / off.
Now my question: To control the heater, do I simply need to connect 24VAC to the 2-wire remote thermostat terminals? IE: COM and POOL and use the relay to switch the POOL leg? If so, can I get away with using a 24VAC wall wart like for a sprinkler controller?
Thanks in advance. The contractor is currently here getting it ready for summer and I’m so excited to use it and if this works, I’d love to post a write up as well. Googling hasn’t really gotten me very far on this specific scenario.
I just a 12K gal inground saltwater pool installed. I have a Hayward H250FDN Heater. I’m a heavy user of Home Assistant and quite adept at automating things so I want to automate my heater.
My current working idea is to get 3 DS18B20 temperature sensors to measure ambient air temp, intake, and return temperatures. I’d then use a relay to control the Hayward heater on/off and Home Assistant to control the temperature set points and pump on / off.
Now my question: To control the heater, do I simply need to connect 24VAC to the 2-wire remote thermostat terminals? IE: COM and POOL and use the relay to switch the POOL leg? If so, can I get away with using a 24VAC wall wart like for a sprinkler controller?
Thanks in advance. The contractor is currently here getting it ready for summer and I’m so excited to use it and if this works, I’d love to post a write up as well. Googling hasn’t really gotten me very far on this specific scenario.