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This furnace control board is a direct replacement for legacy Heil
this replacement air pressure switch is the correct fix
the Sporlan SA-15S is rated for the higher pressures associated with R-410A and is compatible with both synthetic and natural oils used in modern HVAC liquid line applications
Precise Regulation: Maintains consistent LP gas pressure between 8" and 12" W
Itron-Actaris B34SR-1 1/2 Regulator 318973-401 This furnace control board isThe Itron Actaris B34SR 1 1 2 Gas Regulator is a self operated, spring loaded solution engineered for mid range commercial and industrial applications. This robust 1. 5 inch NPT gas regulator features a high capacity Internal Relief Valve (IRV) with a 1 inch vent, designed to stabilize delivery pressure in systems with rapid on off loads, such as gas engines, boilers, and furnaces. Equipped with a 5 8" x 3 4" orifice and a 6 9" w. c. black spring, it
