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it provides a 10-second Trial for Ignition (TFI) with no pre-purge
this assembly ensures precise control of exhaust flow and prevents backdrafting in commercial and heavy-duty residential water heating applications
While temporary cleaning with steel wool may restore a signal
The 1-inch sweat connection ensures a reliable
Exact Fitment: 1/2-inch bore with discharge-side hub placement ensures the blade sits at the correct height within the venturi for optimal draw
White Rodgers 789A-751A1 HSI THPU32HP7Y it provides a 10-second TrialThe White Rodgers 789A 751A1 is a high performance 120V Silicon Nitride Hot Surface Ignitor (HSI) engineered specifically as a Carrier LH33ZG001 direct replacement. As a veteran technician knows, upgrading from older silicon carbide to nitride technology significantly reduces nuisance service calls by providing superior physical durability and faster thermal response. This furnace ignitor features a robust silicon nitride heating element and is rated
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