Lochinvar & A.O. Smith 100109929 Ignition Module 320734-701 this dual pressure switch is

this dual pressure switch is frequently found in both high-efficiency residential furnaces and light commercial package units where dual-pressure oversight is a requirement for safe combustion cycles

ensuring total compatibility and meeting all factory specifications

the Erie VM3312 is rated for hot and chilled water applications only

On most gas furnaces

it serves as a robust interrupter-type gas valve for standard thermocouple-operated technical systems

Lochinvar & A.O. Smith 100109929 Ignition Module 320734-701 this dual pressure switch isThe Lochinvar & A. O. Smith 100109929 Ignition Module is a critical Honeywell Intermittent Pilot Ignition (IID) control designed for precise pilot gas flow management and spark ignition timing. Engineered for high demand gas water heaters and HVAC systems, this direct replacement part (also identified as S8600M3001 or 9004544205) operates on a standard 24V 60Hz electrical loop. Field technicians rely on this module to ensure reliable flame sensing and