1: Reserve hot and cold water pipes and hot and cold water valves to the location connected to the solar water heater.
2: Reserve hot water pipes and cold and the hot and cold water valves at the location connected to the gas water heater
p>3: Just share a hot water pipe. When using it, which one should be open and which one should be closed?
The purpose is to prevent hot water from gas water heaters and solar water heaters from circulating together. If ordinary vacuum tube solar water heaters without valves pass tap water through the gas water heater through the hot water pipe. and into the solar water heater, causing the solar water heater to leak. If it is a pressurized solar water heater, although there is no leakage, two problems will occur if the water heater provides hot water at the same time. hot water can be unstable or even cold.
The heatersSolar water heaters and gas water heaters can be combined.
It's just that this combination doesn't make much sense. If you use a gas water heater only to produce hot water on cloudy and rainy days while the solar water heater cannot heat water normally, there is no problem.
If the hot water heating pipes of solar water heaters and gas water heaters are used in series, big problems will occur, which can easily lead to heater failure water to gas.