is made with any live electrical part. The discharge opening must not be blocked or reduced in size under any circumstances. Excessive length, over 30 feet (9.14 m), or use of more than four elbows can cause restriction and reduce the discharge capacity of the valve.
No valve or other obstruction is to be placed between the relief valve and the tank. Do not connect tubing directly to discharge drain unless a 6 inch air gap is provided. To prevent bodily injury, hazard to life, or property damage, the relief valve must be allowed to discharge water in quantities should circumstances demand. If the discharge pipe is not connected to a drain or other suitable means, the water flow may cause property damage.
The Discharge Pipe:
•Shall not be smaller in size than the outlet pipe size of the valve, or have any reducing couplings or other restrictions.
•Shall not be plugged or blocked.
•Shall be of material listed for hot water distribution.
•Shall be installed so as to allow complete drainage of both the
•Shall terminate at an adequate drain.
•Shall not have any valve between the relief valve and tank.
The
If after manually operating the valve, it fails to completely reset and continues to release water, immediately close the cold water inlet to the water heater, follow the draining instructions, and replace the
FIGURE 10.
An optional
If the top location is preferred, the
Be sure to use new pipe joint compound or put two to three turns of teflon tape around the threaded ends of the temperature- pressure relief valve and
FIGURE 10A.
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