Advice on temporary install of a tank-less hot water heater please. It's temporary, because I'm going to leave the drywall off for sometime so I can do electrical and more later and I think I need to braze copper long term to come out of the wall (let me know any non-brazing solutions). I have a filter (pic below) that's supposed to help reduce hardness and braided hoses. I have two of the compression shutoff valves that you see.
The shutoff in there now is sort of wrong. Sort of, because I can use it but I think I need to have copper on both sides instead of just one to use these. I was hoping to go compression on the copper side to NPT but I didn't do right, and bought compression to compression shutoffs (online). I have several hoses one of which has male npt on one side and female on the other. I think, I just need two female compression to male NPT adapters but if it's best, I can buy new shutoffs, if they come like that. I've seen "kits" but they seem kind of high.
This says "vent-less" but again lmk what you guys think.
Additional:
My house is a 77 and it was a small/cheap house. It has a "water wall" (I stole this term from the Matrix movie). All the water is in one wall and that wall has a gap you can see in the attic. One side is my kitchen sink dishwasher then the washer/dryer and on the other is the guest bath then my bathroom. I'm putting in a tank-less I bought years ago (I hope it works). I'm going to find a curtain to go over the "closet/washroom" (I hate the harmonica type doors that were on there).
What it was:
The shutoff in there now is sort of wrong. Sort of, because I can use it but I think I need to have copper on both sides instead of just one to use these. I was hoping to go compression on the copper side to NPT but I didn't do right, and bought compression to compression shutoffs (online). I have several hoses one of which has male npt on one side and female on the other. I think, I just need two female compression to male NPT adapters but if it's best, I can buy new shutoffs, if they come like that. I've seen "kits" but they seem kind of high.
This says "vent-less" but again lmk what you guys think.
Additional:
My house is a 77 and it was a small/cheap house. It has a "water wall" (I stole this term from the Matrix movie). All the water is in one wall and that wall has a gap you can see in the attic. One side is my kitchen sink dishwasher then the washer/dryer and on the other is the guest bath then my bathroom. I'm putting in a tank-less I bought years ago (I hope it works). I'm going to find a curtain to go over the "closet/washroom" (I hate the harmonica type doors that were on there).
What it was: