| 摘要 |
A method of insulating a water heater of the type including an inner water tank and a surrounding outer shell which is spaced apart from the inner tank so as to define an annular clearance space therebetween includes the steps of providing a flexible envelope of insulation material which begins as a generally cylindrical member which is placed at the bottom of the outer shell on its interior generally centered within the side walls of the outer shell. The next step is to lower the inner water tank into position down onto the insulation-filled flexible envelope. The weight of the inner water tank which has a concave bottom surface shapes the flexible envelope so as to create a first portion or pouch beneath the bottom surface of the tank and a surrounding collar which although connected to the inner pouch is pushed outwardly so as to be disposed between the outer wall of the inner tank and the inner wall of the outer shell.
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