How would you handle this situation
My Mechanical code has this: Discharge from a relief valve into a water heater pan shall be prohibited.
A pan drains by gravity and a TPRV has enormous pressure. The pan would overflow immediately.
There's a bunch of requirements. The one I quoted was #7.So California requires what for TPR discharge?
My Mechanical code has this: Discharge from a relief valve into a water heater pan shall be prohibited.
There's a bunch of requirements. The one I quoted was #7.
#3 Discharge pipe shall discharge independently by gravity through an air gap into the drainage system or outside of the building with the end of the pipe not exceeding 2 feet (610 mm) and not less than 6 inches (152 mm) above the ground and pointing downwards.
So where do you place your air-gap to a drainage system?
Not a lot.What does your UPC say about discharging into a WH pan?
My Mechanical code has this: Discharge from a relief valve into a water heater pan shall be prohibited.
A pan drains by gravity and a TPRV has enormous pressure. The pan would overflow immediately.
Note that IPC 504.7 only requires the pan where water leakage from the tank can cause damage, so a concrete floor with a floor drain near by would IMO not require a pan. Do others see it this way?
Go to the code when the building was originally built. It may have been a legal installation at the timeHow would you handle this situation knowing that dozens of other condos in this high-rise have been piped this way for decades?