IO Hvac Controls ZP4-ESP-KIT Control Kit

The IO HVAC Controls ZP4-ESP-KIT is a professional-grade 4-zone control panel designed to streamline complex forced-air installations. Engineered for high-performance HVAC zoning systems, this universal panel supports single-stage, multi-stage, heat pump, and dual fuel equipment with up to 3 stages of heating and 2 stages of cooling. By integrating advanced Electronic Static Pressure (ESP) logic, this kit effectively eliminates bypass dampers when paired with 3-wire MD series dampers. The included static pressure sensor continuously monitors the system; if pressure exceeds the setpoint, the panel modulates non-calling zone dampers to bleed off excess air, maintaining optimal airflow without compromising zone temperature or causing air noise.

This comprehensive kit provides the core components for a robust installation, including the ZP4-ESP panel, a 10k ohm duct temperature sensor for high/low limit protection, a static pressure sensor, and a 40VA transformer. The slide switch configuration allows for rapid on-site setup, while adjustable high and low balance points ensure peak efficiency for gas/electric and heat pump applications. Designed by technicians for contractors, the IO HVAC Controls ZP4-ESP-KIT reduces installation time and material costs while preventing coil freeze-ups and high-limit trips in multi-zone residential or light commercial environments.

• Eliminates bypass damper requirements using integrated ESP technology and 1,000 steps of pressure resolution.
• Universal compatibility with universal zone control for 3H/2C heat pump or 2H/2C conventional systems.
• Automatic changeover and first call priority with a 20-minute time-share feature for balanced comfort.
• Simplified slide switch configuration and fused-protected inputs/outputs for reliable field service.
• Includes essential HVAC zoning kit components: panel, sensors, and transformer for immediate deployment.

• Does this kit require a bypass damper? No, the ESP technology handles excess static pressure by modulating non-calling dampers, removing the need for a separate bypass run.
• What dampers are compatible with the ESP function? For the ESP pressure relief logic to function, you must use 3-wire, power-open/power-close dampers such as the iO MD series.
• Can I use this with a dual fuel system? Yes, the ZP4-ESP is fully compatible with dual fuel/fossil fuel systems and provides adjustable balance point control when used with an outdoor sensor.

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.