Patent ID: 11920830
Assignee: nan
Field: Chemical engineering (Chemistry)
Classification: CPC F  B | IPC B  F

Claim 7:
8. A method for draining a water heater, the heater having a top side, a bottom side, and an outer side extending between the top side and bottom side, the heater having an interior space with a bottom for holding water, a cold water inlet, a hot water outlet, and a heat source for the interior space, the method comprising:, inserting and connecting a dip-tube through the hot water outlet, the dip-tube having a top end and a bottom end, so that the dip-tube's bottom end extends downwardly to near the bottom of the heater interior space so that the dip-tube's bottom end is in fluid communication with the water in the heater interior space;, providing a downspout having a top end and a bottom end, and connecting the downspout top end to the dip-tube top end with a siphon fitting system, so that the downspout is also in fluid communication, through the siphon fitting system and the dip-tube, with the water in the heater interior space;, extending the downspout bottom end away from the siphon fitting system and over the top side of the heater and down along the outer side of the heater, so that the downspout bottom end is lower than the bottom end of the heater interior space;, flowing cold water through the cold water inlet into the heater interior space, so that water in the heater interior space flows up through the dip-tube, through the siphon fitting system, and out through the downspout;, stopping the flow of cold water into the heater interior space; and, venting the heater interior space to the atmosphere so that the water continues to flow by siphoning, until the water stops draining from the bottom end of the downspout.