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or blocked flue venting
Compact Installation: The 1/2" NPT inlet/outlet design fits seamlessly into standard piping manifolds
a different differential pressure switch should be selected to match the specific safety requirements of the system
As a vital safety cutout switch
Lennox 17F28 Collector Box 321894-709 or blocked flue ventingWhen you're dealing with a residential furnace that isnt pulling the right vacuum or is leaking condensate at the base of the cabinet, the Lennox 17F28 Collector Box (also referred to as a cold end header box kit) is often the primary suspect. This 28 inch OEM replacement is specifically engineered for Lennox Model 28 HVAC systems and high efficiency gas furnaces where proper moisture management is critical. As a HVAC collector box replacement, it
