Trane CNT4821 Limit Switch 319852-301 this board is the primary

this board is the primary interface for managing critical HVAC system diagnostics

While the W40102 is a high-quality wrot copper fitting

Common Questions: How do I test if the float is operational

This flexible condensate drain hose transitions liquid effluent from the secondary heat exchanger to the internal trap system

Key Benefits High-Capacity Discharge: Supports systems up to 2

Trane CNT4821 Limit Switch 319852-301 this board is the primaryThe Trane CNT4821 Limit Switch is a high reliability safety component engineered for precision thermal monitoring in furnaces and air handlers. Featuring a 180F Auto Reset bi metal disc mechanism, this switch serves as a critical fail safe by opening the electrical circuit when internal plenum temperatures exceed safe operational limits. Once the temperature descends below the reset threshold (typically 160F), the bi metal disc automatically returns