Water softener discharge line
I'm trying to install a water softener in my garage, which apparently is pre plumbed for supply line, but not drain line.
The fact that a toilet and a sink right above the water heater at second floor and a clean out on the opposite wall outside tell me there is a drain pipe in the wall. Unfortunatelly look like the pipe is right behind my water heater.
So here is my first question: Without taking out the water heater and reinstall it back, can I open up drywall and tap water softener discharge into existing drain pipe OVER WATER HEATER? It will be 6-7 ft over the floor and 3 feet over water softener itself. Since water softener drain with pressure, I believe the height shouldn't be a problem, but I don't know if it break any plumbing code.
My second question: From what I searched so far, I know I will need a p trap to tap into the line and an air gap for health concern. Do I need to worry about overflow since the dirty water can come from second floor and the pipe won't be sealed below it?
Softener drain line question
Hi I guess this is more of plumbing question than water softener question....
I'm trying to plumb the drain line for water softener, I have seen houses in my neighborhood doing the way like in the picture:
So I assume this is up to my local code (CA), I have some questions:
1. I don't see its vented, is it OK?
2. Will it be OK if I reduce the p trap to like 1 1/2" and reduce the height to 1/3 so it doesn't look as bulky?
3. Any other concern of using cleanout this way?
Thanks for your help!