
IO Hvac Controls ESP-400 Control Panel
The iO HVAC Controls ESP-400 is an advanced static pressure control module designed to modernize residential and light commercial zoning systems. This 4-zone ESP panel utilizes a proprietary algorithm and a high-precision ZPA-SPS static pressure sensor to maintain ideal duct pressure without the complexity of a bypass damper. By continuously monitoring the discharge air plenum, the ESP-400 detects when static pressure exceeds the user-defined setpoint and modulates non-calling 3-wire zone dampers just enough to bleed off excess air. This process ensures whisper-quiet operation and prevents coil freeze-up or high-limit trips by maintaining consistent CFM across the evaporator coil.
Engineered for high-performance contractors, the ESP-400 control panel eliminates the need for bypass ductwork, saving significant installation time and physical space in tight mechanical closets. The module is compatible with iO Controls MD series dampers and most standard 24V zone panels. It features LED status indicators for real-time diagnostics and a simple adjustment dial (factory set at 0.35" W.C.) that allows technicians to fine-tune the ESP zoning technology to specific duct configurations. This bypass-free zoning solution is the most efficient way to manage airflow in variable volume systems using 18-3 thermostat wire connectivity.
Key Benefits
- Eliminates Bypass Ductwork: Saves on material costs and labor while resolving space constraints in residential retrofits.
- Acoustic Performance: Reduces air noise at the registers by preventing excessive velocity in active zones.
- System Protection: Actively prevents evaporator coil freeze-up and blower motor strain by ensuring proper static pressure.
- Universal Integration: Designed to work seamlessly with existing 24V zone control panels and 3-wire motorized dampers.
- Simplified Commissioning: Comes factory-set for standard applications with an easy-to-adjust dial for custom field requirements.
Common Questions
Can I use the ESP-400 with 2-wire spring-return dampers?
No, the ESP-400 requires 3-wire floating point dampers, such as the iO MD series, because the module must be able to drive the dampers to specific intermediate positions to accurately bleed air into non-calling zones.
Where should the static pressure sensor probe be installed?
For accurate static pressure monitoring, mount the sensing probe in the main supply air plenum, at least 4 to 6 feet downstream of the equipment but before any zone dampers or duct transitions.
Does bleeding air into non-calling zones affect comfort?
The amount of air bled into inactive zones is minimal and typically has no perceptible impact on zone temperature. Most zones have enough capacity to absorb this conditioned air for short durations without overshooting setpoints.
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.
Original: $140.50
-65%$140.50
$49.17IO Hvac Controls ESP-400 Control Panel
The iO HVAC Controls ESP-400 is an advanced static pressure control module designed to modernize residential and light commercial zoning systems. This 4-zone ESP panel utilizes a proprietary algorithm and a high-precision ZPA-SPS static pressure sensor to maintain ideal duct pressure without the complexity of a bypass damper. By continuously monitoring the discharge air plenum, the ESP-400 detects when static pressure exceeds the user-defined setpoint and modulates non-calling 3-wire zone dampers just enough to bleed off excess air. This process ensures whisper-quiet operation and prevents coil freeze-up or high-limit trips by maintaining consistent CFM across the evaporator coil.
Engineered for high-performance contractors, the ESP-400 control panel eliminates the need for bypass ductwork, saving significant installation time and physical space in tight mechanical closets. The module is compatible with iO Controls MD series dampers and most standard 24V zone panels. It features LED status indicators for real-time diagnostics and a simple adjustment dial (factory set at 0.35" W.C.) that allows technicians to fine-tune the ESP zoning technology to specific duct configurations. This bypass-free zoning solution is the most efficient way to manage airflow in variable volume systems using 18-3 thermostat wire connectivity.
Key Benefits
- Eliminates Bypass Ductwork: Saves on material costs and labor while resolving space constraints in residential retrofits.
- Acoustic Performance: Reduces air noise at the registers by preventing excessive velocity in active zones.
- System Protection: Actively prevents evaporator coil freeze-up and blower motor strain by ensuring proper static pressure.
- Universal Integration: Designed to work seamlessly with existing 24V zone control panels and 3-wire motorized dampers.
- Simplified Commissioning: Comes factory-set for standard applications with an easy-to-adjust dial for custom field requirements.
Common Questions
Can I use the ESP-400 with 2-wire spring-return dampers?
No, the ESP-400 requires 3-wire floating point dampers, such as the iO MD series, because the module must be able to drive the dampers to specific intermediate positions to accurately bleed air into non-calling zones.
Where should the static pressure sensor probe be installed?
For accurate static pressure monitoring, mount the sensing probe in the main supply air plenum, at least 4 to 6 feet downstream of the equipment but before any zone dampers or duct transitions.
Does bleeding air into non-calling zones affect comfort?
The amount of air bled into inactive zones is minimal and typically has no perceptible impact on zone temperature. Most zones have enough capacity to absorb this conditioned air for short durations without overshooting setpoints.
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.
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Description
The iO HVAC Controls ESP-400 is an advanced static pressure control module designed to modernize residential and light commercial zoning systems. This 4-zone ESP panel utilizes a proprietary algorithm and a high-precision ZPA-SPS static pressure sensor to maintain ideal duct pressure without the complexity of a bypass damper. By continuously monitoring the discharge air plenum, the ESP-400 detects when static pressure exceeds the user-defined setpoint and modulates non-calling 3-wire zone dampers just enough to bleed off excess air. This process ensures whisper-quiet operation and prevents coil freeze-up or high-limit trips by maintaining consistent CFM across the evaporator coil.
Engineered for high-performance contractors, the ESP-400 control panel eliminates the need for bypass ductwork, saving significant installation time and physical space in tight mechanical closets. The module is compatible with iO Controls MD series dampers and most standard 24V zone panels. It features LED status indicators for real-time diagnostics and a simple adjustment dial (factory set at 0.35" W.C.) that allows technicians to fine-tune the ESP zoning technology to specific duct configurations. This bypass-free zoning solution is the most efficient way to manage airflow in variable volume systems using 18-3 thermostat wire connectivity.
Key Benefits
- Eliminates Bypass Ductwork: Saves on material costs and labor while resolving space constraints in residential retrofits.
- Acoustic Performance: Reduces air noise at the registers by preventing excessive velocity in active zones.
- System Protection: Actively prevents evaporator coil freeze-up and blower motor strain by ensuring proper static pressure.
- Universal Integration: Designed to work seamlessly with existing 24V zone control panels and 3-wire motorized dampers.
- Simplified Commissioning: Comes factory-set for standard applications with an easy-to-adjust dial for custom field requirements.
Common Questions
Can I use the ESP-400 with 2-wire spring-return dampers?
No, the ESP-400 requires 3-wire floating point dampers, such as the iO MD series, because the module must be able to drive the dampers to specific intermediate positions to accurately bleed air into non-calling zones.
Where should the static pressure sensor probe be installed?
For accurate static pressure monitoring, mount the sensing probe in the main supply air plenum, at least 4 to 6 feet downstream of the equipment but before any zone dampers or duct transitions.
Does bleeding air into non-calling zones affect comfort?
The amount of air bled into inactive zones is minimal and typically has no perceptible impact on zone temperature. Most zones have enough capacity to absorb this conditioned air for short durations without overshooting setpoints.
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.












