Patent ID: 6170440
Filing Date: 2001-01-09
Classification: F24H

Abstract:
A gas fired booster for heating water for use by a downstream user comprising:a water holding tank having an inlet and an outlet;a water supply for supplying water to be heated for use by a downstream user;a gas fired infrared burner at least partially surrounded by said holding tank;a blower for introducing air into said infrared burner;a fuel supply for supplying a combustible gaseous mixture to said infrared burner;a heat exchanger having an inlet and an outlet, said heat exchanger being disposed between said burner and said holding tank;a pump for circulating water through said heat exchanger into said holding tank, said holding tank and said heat exchanger configured so that said heat exchanger inlet is in fluid communication with one of said holding tank and said pump and said heat exchanger outlet is in fluid communication with the other of said holding tank and said pump;a recirculation loop between said holding tank and said heat exchanger inlet providing fluid communication between said holding tank and said heat exchanger such that said pump can circulate water between said holding tank and said heat exchanger;and a control operationally coupled to said pump for recirculating water through said heat exchanger following a shutdown of said infrared burner.