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If it is a sealed balcony, it must be required, and if it is open, it can be dispensed without.
The water heater itself has a grounding wire, make sure that your power socket uses 3 flat jacks to reliably ground.
According to the regulations, gas water heaters can only be installed in the kitchen to be safe, so it is very convenient to wash vegetables in winter.
This is not recommended for the following reasons:
1. The temperature of hot water is as high as 60-90 degrees, no matter what kind of pipe, it is easy to age, and it will rot in the wall when the time comes, which will lead to problems such as tile leakage and wall water seepage, and the consequences are relatively serious. >>>More
OK. Replace the inlet and outlet valves under the water heater with a straight-through ball valve. Increase the flow of water. >>>More
This depends on the need.
It's still necessary in winter. >>>More