Caleffi Z111000 Z-One 24-Volt Normally Closed Valve Actuator with AUX Switch

1. Product Overview

The Caleffi Z111000 Z-One is a 24-volt normally closed valve actuator designed for use in hydronic and air conditioning systems. This device is engineered to automatically shut off or redirect the flow of hot or chilled water within these systems. Its compact design allows for versatile installation in various applications, including inside baseboard units or directly within fan coil units. The actuator also features an auxiliary switch for additional control functionalities.

Key Features:

• Automatically shuts off or redirects hot or chilled water.
• Compact size for flexible installation.
• Suitable for integration into baseboard or fan coil units.
• Includes an auxiliary (AUX) switch.

2. Safety Information

Read all instructions carefully before installation and operation. Failure to follow these instructions may result in property damage, personal injury, or death.

• Electrical Hazard: Ensure power to the system is disconnected before performing any installation, maintenance, or troubleshooting. This actuator operates on 24 Volts.
• Professional Installation Recommended: Installation should be performed by a qualified HVAC technician or electrician in accordance with local codes and regulations.
• Operating Temperature: Do not expose the actuator to temperatures outside its specified operating range.
• Water Damage: Ensure all connections are watertight to prevent leaks and potential water damage.

3. Installation and Setup

The Caleffi Z111000 actuator is designed for straightforward installation onto compatible Caleffi valve bodies (valve body sold separately). Ensure the valve body is correctly installed in the hydronic or air conditioning system before attaching the actuator.

Installation Steps:

1. Power Disconnection: Turn off all electrical power to the heating or cooling system at the main breaker or fuse box. Verify power is off using a voltage tester.
2. Mounting the Actuator: Align the actuator with the valve body. The compact design allows for easy fitting. Secure the actuator firmly onto the valve body according to the valve manufacturer's instructions. Ensure a proper mechanical connection.
3. Electrical Wiring: Connect the 24-volt power supply wires to the actuator terminals. Refer to the wiring diagram provided with the actuator for correct polarity and connections. The auxiliary switch wires should be connected as required by your system's control logic.
4. Verify Connections: Double-check all mechanical and electrical connections for security and correctness.
5. Restore Power: Once installation is complete and verified, restore power to the system.

Image 3.1: Caleffi Z111000 Z-One 24-Volt Normally Closed Valve Actuator with AUX Switch. This image shows the compact design of the actuator, highlighting its main body and electrical connection points.

4. Operating Instructions

The Caleffi Z111000 is a normally closed actuator, meaning that when no power is applied, the valve it controls will remain in its closed position, preventing flow. When 24-volt power is supplied to the actuator, it will open the valve, allowing water to flow through the system.

Functionality:

• Automatic Control: The actuator responds to a 24-volt electrical signal from a thermostat or system controller. When the controller calls for heating or cooling, power is supplied, and the actuator opens the valve. When the call ends, power is removed, and the actuator closes the valve.
• Auxiliary Switch: The integrated auxiliary switch provides an electrical signal indicating the valve's position (open or closed). This signal can be used to control other components in the system, such as a pump or boiler, ensuring they operate only when the valve is open. Consult your system's wiring diagram for specific auxiliary switch applications.

5. Maintenance

The Caleffi Z111000 actuator is designed for reliable, long-term operation with minimal maintenance. However, periodic inspection is recommended to ensure optimal performance.

Recommended Maintenance:

• Annual Inspection: Annually, or as part of your regular HVAC system maintenance, visually inspect the actuator and its wiring.
• Check Connections: Ensure all electrical connections are secure and free from corrosion.
• Verify Operation: Observe the actuator's movement during system operation to confirm it opens and closes the valve smoothly and completely.
• Cleaning: Keep the exterior of the actuator clean and free from dust or debris. Do not use abrasive cleaners or solvents.

No user-serviceable parts are inside the actuator. Do not attempt to disassemble the unit.

6. Troubleshooting

If the Caleffi Z111000 actuator is not functioning as expected, consider the following troubleshooting steps. Always disconnect power before inspecting electrical components.

Common Issues and Solutions:

• Actuator Does Not Open/Close:
  • Verify that 24-volt power is being supplied to the actuator when the system calls for it. Use a multimeter to check voltage at the terminals.
  • Check all wiring connections for looseness or damage.
  • Ensure the actuator is securely mounted to the valve body.
  • If the actuator receives power but does not move, the internal mechanism may be faulty. Replacement may be necessary.
• Auxiliary Switch Not Functioning:
  • Check the wiring connections for the auxiliary switch.
  • Verify the auxiliary switch is correctly integrated into your system's control logic.
  • If the actuator operates correctly but the auxiliary switch signal is absent, the switch itself may be faulty.
• Unusual Noises:
  • Ensure the actuator is properly seated and secured on the valve body. Loose mounting can cause vibrations.
  • If persistent grinding or clicking noises occur, the internal gears may be damaged.

If troubleshooting steps do not resolve the issue, contact a qualified HVAC technician or Caleffi customer support for assistance.

7. Specifications

8. Warranty and Support

Warranty information for the Caleffi Z111000 Z-One 24-Volt Normally Closed Valve Actuator with AUX Switch is provided by the manufacturer. Please refer to the documentation included with your purchase or visit the official Caleffi website for detailed warranty terms and conditions.

For technical support, replacement parts, or further assistance, please contact Caleffi customer service directly. Contact information can typically be found on the manufacturer's website or product packaging.