Trane CNT1031 Limit 340155-7026 protecting the system from damage

protecting the system from damage and ensuring compliance with IAPMO IGC 128 standards

repeatable solution for modern HVAC pressure monitoring

Common Questions Is the 622140R backwards compatible with the 622140

System Protection: Constantly monitors the gas valve

Is this bracket compatible with multi-stage York units

Trane CNT1031 Limit 340155-7026 protecting the system from damageProfessional grade Trane CNT1031 Limit switch is a Single Pole Double Throw (SPDT) thermal safety control designed for precise HVAC temperature regulation. This OEM replacement part is essential for maintaining system integrity by monitoring supply plenum temperatures and preventing heat exchanger damage. In a standard setup, the switch is normally closed, providing a consistent signal to the burner circuit. If internal temperatures reach the 150F