Water Heater Discharge Tube Question

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Roback

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Am doing a remodel. I have a water heater in a closet on a ground floor that has a exterior wall. I have a pan with a pvc discharge that exits the wall. Do I need to install a copper discharge tube from the TPR valve outside the wall, or can I just run it down into the pan? I am in California. Also the heater is elevated, so not sure I can even run it below the 6" code requirement.
 

MACPLUMB

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Am doing a remodel. I have a water heater in a closet on a ground floor that has a exterior wall. I have a pan with a pvc discharge that exits the wall. Do I need to install a copper discharge tube from the TPR valve outside the wall, or can I just run it down into the pan? I am in California. Also the heater is elevated, so not sure I can even run it below the 6" code requirement.
SIMPLE DRILL A HOLE THOUGH THE WALL AND RUN 3/4"
COPPER OUT AND DOWN
THE 6" RULE IS TO MAKE SURE IT DOE'S NOT GET OVERGROWN BUT HIGH ENOUGH THAT ANY WATER RUNNING OUT DOE'S NOT POOL AND BOCK THE DRAIN BUT NOT HIGH ENOUGH THAT HOT STEAMING WATER WILL BURN SOMEONE CLOSE TO THE DRAIN,
IF IT BLOWS OFF ON TEMPERATURE THAT IS 210 DEGREES
 

Jadnashua

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The probe is maybe 6" long or so, and opens the valve when it sees 210-degree F water there. Watts says that at the top of the tank, it's closer to 235-degrees, and as soon as it hits lower pressure, it will flash to steam. Live steam is probably as bad if not worse than liquid water. This is why you don't want to run that pipe with a plastic material.
 

DonL

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SIMPLE DRILL A HOLE THOUGH THE WALL AND RUN 3/4"
COPPER OUT AND DOWN
THE 6" RULE IS TO MAKE SURE IT DOE'S NOT GET OVERGROWN BUT HIGH ENOUGH THAT ANY WATER RUNNING OUT DOE'S NOT POOL AND BOCK THE DRAIN BUT NOT HIGH ENOUGH THAT HOT STEAMING WATER WILL BURN SOMEONE CLOSE TO THE DRAIN,
IF IT BLOWS OFF ON TEMPERATURE THAT IS 210 DEGREES


How many time have you seen one Pop Off ?

Anyone.

Just curious.
 

MACPLUMB

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I have run several service calls for this,
how many times you see a space shuttle explode it only takes that one in a million no matter how unlikely !
 
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