Description 1000kpa 3/4″ T&PR Valve 20mm 1000KPA HTE715/717 Extension Temperature & Pressure Relief Valve Never fit a T&PR valve with a rating higher than that indicated on the water heater rating plate. Do not use reconditioned T&PR valves. 1. Partially drain the water heater (refer to “Draining the Water Heater” on page 29). 2. Remove the drain line from the T&PR valve. 3. Unscrew the T&PR valve and remove. 4. Confirm the replacement T&PR valve is the correct rating and refit using thread tape. 5. Refit the drain line. 6. Close the hot tap and restore water supply. 7. Check T&PR valve thread for leaks. 8. Operate the T&PR valve lever to reset relief drain. 9. Purge air from the system through hot taps. 10.Restore the power supply to the water heater.
