Hello, I recently purchased three Envi Wall Heaters from someone locally that had upgraded to a mini split. He told me they were all in working condition. I finally got around to wiring them up but I feel as though I'm doing something wrong. My house has 3 wire 240v set up for the heater circuits on their own circuit breakers in the box. I wired each of the hot wires to the hot wires (black to black, white to white) which was giving me 240v AC and the bare copper wire to the green ground wire but it's not working. Could I be missing something? The model of the wall heater is the Envi HW1022T

Comments

jimjamjahaa t1_j5vo1tr wrote on January 25, 2023 at 9:52 PM

well i googled it and the first thing the manual says in big red letters is "this thing won't work unless it is mounted to a wall"

https://www.eheat.com/content/Envi-Owners-Manual.pdf

so that's my guess with no futher information.

Glacko222 OP t1_j5vo83y wrote on January 25, 2023 at 9:53 PM

Yeah I have it mounted and I can hear the switch click so that's likely not the issue

jimjamjahaa t1_j5vpksr wrote on January 25, 2023 at 10:01 PM

hmm that same manual says

supply side black -> envi black

supply side red or 2nd black -> envi white

supply side green/copper -> envi green

supply side white -> not used, cap off this wire.

which sounds different to how you have done it.

Glacko222 OP t1_j5vpx3s wrote on January 25, 2023 at 10:04 PM

For some reason the house has a white wire for the other 120V instead of red or another black (it's an older house 1980s era with 3 wires and not 4

jimjamjahaa t1_j5vqs35 wrote on January 25, 2023 at 10:09 PM

well i'm out of ideas. i would imagine it's just a big resistive heating element inside which is about as basic as it gets. altho now i say that, i don't understand how your 240 volt system works with no neutral line. (oh i think i get it, the 2 live wires are out of phase creating a bigger potential... nice!)

NuGundam7 t1_j5yjy3d wrote on January 26, 2023 at 1:37 PM

Yeah, thats normal for a 120/240v system. Each 120v wire is the ground path for the other 120v wire. They combine and create 240v.

It was standard up to the 80s and 90s (USA) for the 240v circuits to never have a neutral. When electronics started being added to heaters, dryers, ovens, etc, then a neutral became a wanted feature for a clean 120v power source.

Glacko222 OP t1_j5vqchg wrote on January 25, 2023 at 10:06 PM

Update! So I tried another wall heater spot in my home and it seems it's working so it might be the wiring in that spot specifically? Not sure why though