On Jan 22, 4:02*pm, George wrote:
On 1/22/2013 10:19 AM, dpb wrote:

On 1/22/2013 9:14 AM, Chip C wrote:
On Tuesday, 22 January 2013 09:43:02 UTC-5, bob haller *wrote:

new hot water tanks come with a temp pressure valve pre installed, the
outlet should go to the floor to prevent a scald hazard if someone
happens to be walking by when it operates

Some jurisdictions require the pressure relief to be piped outdoors.
Sounds like this is what the OP is looking at.

Nope...PRV is on the side of the tank not on the CW supply line...

--

A pressure relief valve can be anywhere as long as it can "see" tank
pressure and never be isolated. We have an indirect heater and the valve
sits right on top.

All the hot water tanks I've ever seen over decades had
a combined temperature and pressue relief valve installed
on the side of the tank itself. EA doesn't say if it has that
in addition to the mystery thing or not.