Hot Water Boiler Pressure Relief Valve Leaking

Some boilers have a tankless water heater or what is also known as a hot water coil.

Hot water boiler pressure relief valve leaking. Well if your water heater pressure relief valve is leaking after testing then there is no other solution than to replace it. This is the water heater pressure relief valve s way of telling us that it needs to be replaced as soon as possible. Replace a defective leaking valve right away. The hot water coil has developed a pin in it.

These valves may look identical but they re set to go off at 30 psi. Extreme pressure within the system could cause the boiler or water lines to rupture. If a pressure relief valve for a boiler is accidentally installed on a water heater it will leak like crazy from the start. If the water inside the unit gets too hot usually above 210 degrees or pressure builds up too high above 150 psi the water heater can become damaged or even explore.

Special problems closed hot water system thermal. Replacing the old valve with a new one. If the temperature and pressure within the boiler are in the normal range and the pressure relief valve is leaking it is a sign the valve is defective. A leaking heat exchanger could allow the higher city water pressure to enter the space heating side and increase the system pressure.

Sometimes this coil will develop a pin in it and this causes pressure to seep into the boiler and leads to leaks in the pressure relief valve. In either case start by replacing the pressure relief valve using a different brand in case the valve itself is defective. Turn off the water to the coil and check if the pressure stops rising. The second reason a water heater relief valve leaks is the water has gotten too hot if the temperature of the water in the water heater reaches above 210 degrees f the relief valve will leak or even blow off this is why the outlet of the relief valve must be piped to about 6 inches from the ground you would not want to get a blast of 210.

Another culprit that can cause the pressure to rise and open the relief valve is if the boiler has an indirect water which uses the boiler water to heat the domestic water using a water to water heat exchanger. A good solution to this risk is the relief valve. One thing to keep in mind when doing the replacement is that. The relief valve is an important safety feature on the water heater.