Designed for HVAC high-limit switch replacement

Universal Compatibility: Replaces a wide range of legacy Carrier

Always check the temperature rise across the heat exchanger after installation

this metallic non-fused switch is the standard choice for contractors requiring a durable

The York S1-025-35362-000 Limit is a critical safety component designed for precise thermal management in York

Lochinvar & A.O. Smith 100277815 Connection Board 318172-701 Designed for HVAC high-limit switchThe Lochinvar & A. O. Smith 100277815 Connection Board is a critical low voltage interface designed for precise communication between the Smart System control and external HVAC components. As a veteran grade low voltage connection board, it serves as the central hub for integrating 0 10 VDC BMS inputs, building alarm contacts, and multi unit cascade sequencing. This OEM boiler control board is engineered to handle signal routing for pump delays,