Patent ID: 7036498

Claim:
A furnace for supplying heated air to a space to be heated and capable of being installed in more than one position, the furnace including at least one burner and a heat exchanger in communication with the at least one burner for receiving products of combustion therefrom, the furnace further including an inducer in communication with the heat exchanger for inducing a flow of products of combustion through the heat exchanger and out of the furnace, the furnace comprising: a multi-position condensate draining system, the condensate draining system including an exhaust manifold in communication with the inducer and an ambient environment, and configured to facilitate transfer of combustion gases out of the furnace, the exhaust manifold including at least four drain ports positioned to drain fluid from the exhaust manifold, at least a first two of the drain ports being positioned on one side of the exhaust manifold, and at least a second two of the drain ports being positioned generally opposite the first two of the drain ports, and wherein the first two drain ports are larger than the second two drain ports, thereby providing increased drainage capacity when the furnace is oriented such that the exhaust manifold is above the inducer.