Carrier Corporation

Eric A Harvey

Larry D Rieke

Timothy J Waterman

A multi-poise furnace that is capable of operating in either a vertical or horizontal orientation and having a primary heat exchanger coupled to a condensing heat exchanger, apparatus for collecting and draining condensate leaving the condensing heat exchanger. The collecting apparatus includes a rectangular-shaped collector box connected to an outlet means of the condensing heat exchanger whereby condensate leaving the condensing heat exchanger flows to the lower part of the collector box, and a first drain situated at one corner of the collector box and a second drain situated at another corner of the collector box that is diagonally positioned in relation to the one corner such that one drain is always located in the lower part of the collector box regardless of the furnace orientation, a sheath having at least one drainage slot located around a pressure tap to prevent condensate from blocking the pressure tap, and a plurality of drain diverters for directing condensate originating in the condensing heat exchangers to the center of the collector box.

Condensate handlers for multi-poise furnace

A coupling box for a condensing furnace having primary and secondary heat exchangers places the discharge ports of the primary heat exchanger in fluid communication with the inlet ports of the condensing heat exchanger. A baffle in the coupling box directs the flow of flue gas evenly therein to maintain temperature equilibrium so that water vapor does not condense in the coupling box.

Cold spot baffle for coupling box

There is disclosed a furnace having an air flow path for heated air and combustion products that passes through a condensing heat exchanger. Condensate forming in regions of negative and positive pressure is separately conducted to a unitary condensate trap of minimal vertical height incorporating therein separate traps for handling the high and low pressure gaseous environments. The condensate is drained through a common outlet port into the atmosphere or into a drain pipe.

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Greenwood, IN, United States of America

Eric A Harvey