Thermal Actuator, 4 Wire

Uponor A3023522 Thermal Actuator – 4-Wire Control for Precision Radiant Zoning

Designed for efficient zone control in radiant heating and cooling systems, the Uponor A3023522 Thermal Actuator (4-wire) provides dependable performance and responsive operation. Engineered for use with Uponor EP heating manifolds, this actuator simplifies loop control while maximizing energy efficiency and comfort in hydronic applications.

Precision Control for Hydronic Systems

This thermal actuator utilizes a wax element to open and close flow to individual radiant loops based on zone thermostat signals. With a compact profile, low power consumption, and quiet operation, it’s ideal for both residential and commercial jobs requiring reliable zoning control. The 4-wire configuration includes end-switch capability for activating secondary devices like circulators or relays.

Key Features

• 4-Wire Design with End Switch – Allows control of additional devices when the valve opens, such as zone pumps or system relays.
• Normally Closed Operation – Opens when powered to regulate water flow to radiant zones based on demand.
• Universal Fit for Uponor EP Manifolds – Includes a mounting ring for quick and secure attachment with no additional adapters required.
• Low Current Draw – Operates efficiently at 24 VAC with minimal power usage.
• Manual Function Check – Visual position indicator and mechanical release for manual override during installation or service.

Technical Specifications

• Model Number: A3023522
• Control Type: Thermal actuator, 4-wire with auxiliary switch
• Operating Voltage: 24 VAC
• Threaded Connection: M30 x 1.5 mm
• Opening Time: Approx. 3–5 minutes
• Close-Off Force: ~100 N
• Power Consumption: ?1 W
• Temperature Range: 32°F to 122°F (0°C to 50°C)

Installation Guidelines

The actuator installs vertically or horizontally on compatible Uponor manifolds. Installation is straightforward but requires care to ensure proper electrical wiring and secure attachment. Professional installation is recommended to ensure compatibility with control systems and compliance with local electrical and mechanical codes.

Contractor Insights

For HVAC and Plumbing Professionals: The Uponor A3023522 offers long-term reliability and precise zone response, especially valuable on larger multi-zone radiant jobs. The integrated end switch is a critical time-saver for coordinating controls and reducing wiring complexity.

Applications

• Hydronic radiant heating and cooling systems
• Single- or multi-zone control for residential or light commercial projects
• Compatible with Uponor EP Manifolds and most 24V thermostats

Trust Your System to Proven Components

For contractors focused on performance, durability, and ease of use, the Uponor A3023522 Thermal Actuator is a reliable zoning solution. It offers the control you need, the quality you expect, and the compatibility your systems demand.