This dual-purpose unit features a high-limit range of 5 to 28 inches W

Listen for high-pitched squealing

Precision Level Monitoring: Restores factory-standard buoyancy and response for accurate boiler water level management

Code Compliance: Designed and certified to ASME Section IV standards for forced circulation heating boilers

This 1/2 HP blower motor features a permanent split capacitor (PSC) design

Lennox 97J49 Limit Switch 320735-701 This dual-purpose unit features aThe Lennox 97J49 Limit Switch is a mission critical safety component engineered for precise thermal regulation in residential and light commercial HVAC systems. This OEM Lennox replacement part functions as a high limit safeguard, specifically calibrated for a 120 150F temperature range to protect the heat exchanger from catastrophic thermal stress. As a veteran grade furnace limit switch, the 97J49 features an automatic reset (AUTO) mechanism,