If the board is receiving 24V but not initiating the igniter sequence

the 310451 is compatible with high-performance McDonnell & Miller FS4-3 series

making it an ideal choice for fan coils

it manages pressure directly at the equipment

Whether you are servicing residential or light commercial sets

Nor East Controls 30067857-107 Packing Nut Els PW 17895 If the board is receivingThe Nor East Controls 30067857 107 Packing Nut is a critical component designed specifically for globe valve maintenance and pressure seal integrity in commercial HVAC systems. Engineered for 2 1 2 inch to 3 inch 125# flanged valves, this industrial valve part ensures precise compression on the packing set to prevent stem leakage. Fabricated to withstand the mechanical stresses of high cycling applications, the 30067857 107 allows for fine adjustment