T P Valve Tankless Water Heater

So consult the manufacturer s installation manual.

T p valve tankless water heater.

This valve can be used with all rheem tankless water heater models. If all goes well a tpr valve never gets used except during testing. The tankless water heater should have been installed only by a qualified tagaki approved installer so it should be proper. I was told this is normal.

The valve is called a t p valve or tpr valve for temperature and pressure relief. Bosch noritz etc require a pressure only relief valve on the hot water output. The valve s sole purpose is to keep the pressure and temperature inside of a tank below certain levels. Fit an adjustable wrench onto the flat portion of the valve and continue to tighten the valve clockwise.

Gas fired tankless water heaters will usually require a pressure relief valve while electric on demand water heaters may not. Changed out t p valve twice then resorted to changing entire water heater. I have a tankless heater ever since i bought the house 1 5 years ago the t p valve has been discharging slightly when you turn off a hot water tap. Now the t p valve is leaking constant when you use hot water.

We are here to tell you that it is okay for some water heaters to be without temperature pressure relief valves. Here s an excerpt from that manual. 40 gallon water heater keeps leaking from t p valve after using water in house. On the side or top of your water heater tank is a valve connected to a metal or plastic discharge tube pointing downward.

Also known as the temperature and pressure valve this device automatically releases excess pressure in your water heater system. The takagi gas fired tankless water heater manual specifies a pressure relief valve on the hot water outlet. Screw the valve into the port on the lower edge of the tankless heater by hand. Every water heater whether gas or electric needs a temperature and pressure relief valve because without one it could begin to leak or even explode.

The ap12993c is the equivalent version with the watts 3 4 inch pressure relief valve model 3l 150. Tagaki and others i e. Brand new water heater started leaking from t read more.