HOT WATER ISOLATION VALVE Avoid contact with the hot water dis-charged during the test to prevent personal injury. The PRV (Pressure Relief Valve) need to be installed to the Hot water valve.
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COLD WATER ISOLATION VALVE Drain valves should remain closed during normal operation. Do not rely on the drain cap to stop the water from draining. When draining, always remove drain caps slowly to insure that no pressure exists.
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INSTALLATION DIAGRAM The tankless kit works with all 3/4 inch NPT thread is suitable for most U.S. residential usage, both residential and commercial gas tankless water heater brands.
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