This question is relative to the California Plumbing Code (CPC), specifically the Sacramento area.
I'm doing some remodeling of a bathroom where the water heater pan drain line comes across the ceiling a bit lower than I can allow because I'm replacing a drop ceiling with hard and I'd like to get it up higher than where the pipe exits the exterior wall.
The drain is running parallel to the wet wall of the bathroom and therefore I have access to the building sewage drain system. Is it okay, per the above codes, to connect the water heater drain pan to the building waste system?
I've found an inspection checklist which says...
Drain-Pan shall be required when a water heater and/or tank is installed in a location where it could cause damage; in case of failure/leak to floor, sub-floor, drywall. Drain pan shall be installed with a minimum ¾” drain outlet and discharge that drains to the exterior of the building or an approved location. (2013 CPC Section 508.4)
...so being that the heater itself is in the attic space I have to follow this rule. But when it says (emphasis mine)...
"that drains to the exterior of the building or an approved location."
...I'm not able to find where in the code it defines approved locations. Can anyone shed some light on this issue please?