Hoping to get some help understanding this sauna heater wiring diagram. Pics at bottom.
Disclaimer that I have an electrician friend "helping" (not for free though!) me on the weekends so I can't go too far wrong, but I am doing the runs and prep work to help the project go faster -- and also just have an inquisitive mind toward learning and understanding all of this. That is just to say, don't be afraid to answer for educational purposes.
The unit consists of a wall-mounted controller (outside of sauna) and the heater itself + temperature sensor, inside the sauna.
The controller is supplied with 240v and contains the relay and PCB/controls to turn on the unit. Upon turning on the unit, obviously the heater is energized.
It's a 9KW heater. I have 6/3 with ground on a 50 amp breaker running to the sauna location.
It also has an option to power a 120v light (inside the sauna) from the controller, which I will not be taking advantage of.
Will I be using the neutral from the 220 run at all? (remember I am not going to use the 120v light option)
I am generally confused about the jumpers on NN / LL for the power input, but only on NN for the output to the heater.
Generally, looking for confirmation on what goes where :) Would appreciate if you could help demystify for me!
Here are all 3 wiring diagrams supplied in the manual. I assumed the top one was relevant for me but perhaps not.