Dielectrically insulated secondary flue for gas-fired water heater

A method of securing a secondary tubular flue in a water holding tank of a bottom-fired water heater, said method comprising the steps of:

• i) providing a secondary tubular flue conduit having opposed straight tubular end sections and a helical section integrally formed, said tubular end sections each having a pressure flange immovably secured transversely thereabout and spaced a predetermined distance from a free end thereof,
• ii) positioning a dielectric material gasket about said free ends of said opposed straight tubular end sections to abut against an outer surface of said pressure flange,
• iii) inserting said secondary tubular flue from a bottom open end of said water holding tank prior to installing a bottom wall of said water holding tank with said bottom wall having a straight central flue secured thereto, and positioning an upper one of said opposed straight tubular section extending in a hole formed in a top end section of said water holding tank and a lower one of said opposed straight tubular section in a hole formed in a side wall of said water holding tank spaced a predetermined distance from said bottom wall of said tank to be later installed,
• iv) assembling a dielectric tank connector onto an end portion of each said straight tubular end sections to connect said tubular end sections to the tank by an electrically insulated and leak proof connection.