Yes. The only reason I know of to not get a permit is to skimp on materials and skimp on labor. Believe me when I tell you that there are a lot of places in the installation of a hot water heater where corners can be cut, and cut to your disadvantage. The inspector for the city...
See Figure below for typical water piping installation for Polaris water heater used in conjunction with a solar storage tank. 16 GAS SUPPLY AND PIPING GENERAL INFORMATION GAS PIPING DANGER This water heater must only be connected to gas supplied by a commercial supplier. THIS WATER HEATER IS ...
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