Water Heater PRV Discharge Line into Crawl Space?
I'm installing a small 2 gal electric supplemental water heater for the downstairs 1/2 bath. I want to do this so guests don't have to wait to receive hot water from our tankless unit located some distance away.
I am planning to run the PRV discharge line down into the crawl space and would like to run it into what I've been told is a flood drain to the sewer... essentially a 4 inch flex line like you'd see attached to the downspouts.
When the new condensing furnace was installed the contractor ran the condensate line into this "sewer line' since it's right below the furnace area where I want to mount the water heater.
What's a good legal way to do this? Would I have to mate up some type of floor drain to the sewer drain and then plumb the PRV dishcharge so it discharges into the free air above the drain, or can the discharge line go right into the sewer line?
What I'm calling the sewer drain line only extends about 4-6 inches beyound the base of the foundation footing.
I could post a picture if that would help.