International Environmental 71520319 Thermostat

The International Environmental 71520319 is an OEM 7-day programmable fan coil thermostat designed for precision climate control in high-performance hydronic systems. As a veteran-grade digital thermostat replacement for the obsolete 71520305, this unit offers seamless integration into existing 2-pipe or 4-pipe fan coil configurations without requiring backplate modifications in most retrofit scenarios. High-volume fan coil unit parts like this are essential for maintaining the multi-speed fan logic (3-speed control) and auto-changeover capabilities necessary for large-scale hotel, condominium, and office applications. The E055-71520319 model features a no-logo venstar design with a soft-glow backlight, dual or single setpoint options, and a dry contact terminal for condensate overflow or occupancy sensors, ensuring total setpoint limiting and keypad lockout security for commercial environments.

• Drop-in Compatibility: Directly replaces the legacy 71520305 and fits standard IEC backplates, reducing installation time significantly.
• Universal Configuration: Field-selectable for 2-pipe or 4-pipe systems, allowing for standard heating/cooling or auto-changeover logic.
• Precision Control: Features 3-speed fan control and supports remote temperature sensors via the RS terminal for accurate room sensing.
• Advanced HVAC Logic: Includes a pre-occupancy fan purge and is CA Title 24 compliant for high-efficiency project requirements.
• High-Contrast Display: The large digital display with a soft-glow backlight ensures easy reading in low-light utility or mechanical rooms.

Is the 71520319 compatible with Wi-Fi modules?
While this specific model is a standard programmable unit, it is designed for reliable hardwired performance. For remote access, ensure you are utilizing the correct IEC Skyport compatible version or local API equivalents.

Does this unit support automatic cooling-to-heating switching?
Yes, the auto-changeover feature is available for 4-pipe systems. For 2-pipe systems, it requires an H2O changeover sensor (accessory G100-71520306) to sense water temperature and switch logic accordingly.

Can I lock the settings so tenants cannot adjust them?
Absolutely. The 71520319 includes a locking keypad and setpoint limiting options to prevent unauthorized temperature adjustments in commercial or multi-family housing.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.