Trane ZZSENSAL0400AA Sensor 321042-401 Once the heat exchanger cools

Once the heat exchanger cools to the 90°F reset point

the DP-3800 prevents moisture-related issues such as corrosion and downstream equipment failure by ensuring consistent water evacuation without manual intervention

critical for balancing and energy savings

High-Temp Durability: Engineered with composite materials that resist degradation under high-heat flue path conditions

Compatible with glycol-based systems

Trane ZZSENSAL0400AA Sensor 321042-401 Once the heat exchanger coolsThe Trane ZZSENSAL0400AA is a precision engineered OEM remote wired indoor sensor designed to provide localized temperature data for advanced climate control. In professional zoning applications, relying on a single thermostat location often leads to hot or cold spots; this remote temperature sensor allows the system to average readings across multiple zones or monitor a specific high priority space. It is a critical component for maintaining the