A furnace header box having blocked condensation protection,...

Details A furnace header box having blocked condensation protection,... A furnace header box having blocked condensation protection,...

F - Mech Eng,Light,Heat,Weapons

24

F

F24F 13/22 (2006.01) F24H 3/00 (2006.01)

Patent

CA 2719682

A header box, a furnace and a blocked condensation protection system are disclosed herein. In one embodiment, the header box includes: (1) a first channel having a first channel supply port positioned to be in fluid communication with an inlet of a combustion air blower and a first pressure port couplable to a first input of a pressure sensing device, the combustion air blower and the pressure sensing device associated with the cold end header box and (2) a second channel having a second channel supply port positioned to be in fluid communication with the inlet of the combustion air blower, a second pressure port couplable to a second input of the pressure sensing device and a pressure reference inlet, the second channel in fluid communication with the first channel and configured to have about a same pressure as the first channel when the pressure reference inlet is blocked.

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