as well as older PLT-5 series tanks

It features a 15-second pre-purge

Unlike many pilot-operated valves that require a 5–10 PSI differential to stay open

protecting the unit and the facility

preventing premature diaphragm failure

York S1-025-42734-000 Wire Harness 326058-756 as well as older PLT-5The York S1 025 42734 000 Wire Harness is a critical OEM component engineered specifically for 2 stage furnace systems and multi stage air conditioning units. Designed to facilitate a seamless interface between the HVAC control board and peripheral system components, this harness ensures precision signal transmission for staggered heating and cooling cycles. As a veteran grade York replacement part, it addresses common connectivity issues in high