How To Shut Off Gas Water Heater. Leave as much hot water in the tank as possible to forestall freezing concerns if your heating system becomes inoperable. Also, when you turn off your water heater when on a vacation, you only meet more problems.
This setup leaves the water heater off for about 11 hours a day, which should be a significant. If you don't see a valve near the heater, follow the gas line until you find one. A recent example of another tankless water heater that was never flushed.
The thermostat is located near the bottom of the water heater.
This setup leaves the water heater off for about 11 hours a day, which should be a significant. If the gas supply is blocked, or if the amount of gas isn’t sufficient, the pilot light won’t stay lit. The thermostat is located near the bottom of the water heater. The customer said their tankless water heater kept shutting off in the middle of a sower.