Water Heater Vacuum Relief Valve Installation

The t p valve automatically opens if the temperature or pressure becomes too high for the tank.

Water heater vacuum relief valve installation. Locate the water heater drain and pressure relief valve and allow all water to drain from water. Many regions require the t p valve to lead outside for added safety and some may even require two valves for redundancy. Vacuum relief valves are used in water heater tank applications to automatically allow air to enter into the piping system to prevent vacuum conditions that could siphon the water from the system and damage water heater tank equipment. Open t p valve to help relieve vacuum in tank.

It needs to be the same size as the outlet of the relief valve and co to about 6 inches from the floor without any possible way of. Drain tank by fully opening drain valve. The vacuum relief valve shall be ansi z21 22 rated and csa certified. Directly above the vertical line that feeds the tank my hot water tank is under the.

T p valve the temperature and pressure relief valve is an important safety device which goes off when your tank exceeds 210 degrees fahrenheit or 150 psi. 3 install or locate this water heater only in accordance with the provided installation. With the power or gas off and the water off and drained below the relief valve remove the drain pipe from the relief valve if it does not have a drain pipe on it be sure to install one on the new relief valve. Prepare the water heater for repairs.

They have a brass body construction with npt male inlet connection and a protective cap. It may be in the box or you may need to buy your own. Do not reuse the old valve. These valves are suitable for low pressure steam and water service and are ideal for use in water heaters and.

Series n36 water service vacuum relief valves are used in water heater tank applications to automatically allow air to enter into the piping system to prevent vacuum conditions that could siphon the water from the system and damage water heater tank equipment. Turn off the cold water inlet valve. I purchased a vacuum relief valve and the installation instructions that came with it states that it should be installed on a horizontal line above an elbow. In order to gain occupancy an inspector informed me that i need to install a vacuum relief valve on the cold water supply line for my hot water tank.

Before doing any work on a water heater you should always turn off the circuit breaker or set the gas control valve to the pilot setting. A watts model n36 m1 vacuum relief valve shall be installed on domestic hot water supply tanks heaters unit heaters steam kettles as indicated on plans. See item 2 in exploded view.