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Summary of the article below:

The PENN System 550 is a modular HVAC-R controller that combines temperature, humidity, and pressure control with built-in A2L refrigerant leak detection in one platform. It simplifies installation by replacing multiple controllers and sensors, while optional cloud connectivity provides remote monitoring, alerts, and system adjustments. Designed for both new installations and upgrades, System 550 helps contractors improve efficiency, reduce downtime, and meet A2L compliance requirements with an easy-to-configure, all-in-one solution.

[PENN / System 500]

What is it?

The PENN System 550 is a modular, multi-stage controller designed for HVAC-R applications.

Applications that need:

  • Temperature
  • Humidity
  • Pressure control ( along with built-in A2L refrigerant leak detection)
[PENN / System 500]

How does it work?

System 550 uses a modular control setup that lets you configure it based on your application.

You can connect sensors for temperature, humidity, or pressure, and the controller manages outputs across multiple stages.

For A2L applications
  • Integrates directly with refrigerant leak sensors
  • Automatically detecting leaks and triggering mitigation responses
  • Connect to the cloud
  • Real-time system visibility
  • Alerts
  • Ability to adjust settings without being on-site
What's Next:You install it, configure it through a simple menu, and the system handles both control and safety in one place.

Why it matters

System 550 is designed to be user-friendly, with guided menus and simple configuration. Whether you’re replacing an older controller or installing on a new system, you can get up and running without building everything from scratch.

Complete Solution:

  • Multi-Stage Controller
  • A2L Refrigerant Leak Detection & Mitigation
  • Controls System Cloud

Need help with System 550?

If you’re not sure how to apply it, we can help you select the right setup, walk through configuration, and support your project along the way.

Email the Stromquist Team

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