Resol DeltaTherm® HC Mini – Advanced Hydronic Heating & Cooling Controller
The Resol DeltaTherm® HC mini is a next-generation hydronic heating and cooling controller engineered for high performance, versatility, and ease of use. Built on an intuitive human-interface platform, it eliminates the need for specialized programming—making setup faster, simpler, and more cost-effective for installers and system designers.
Powerful, Flexible Control for Modern Hydronic Systems
Designed to manage both heating and cooling circuits, the DeltaTherm® HC mini includes:
• 5 sensor inputs
• 1 Grundfos VFS analog input
• 2 PWM (0–10 V) outputs
• 3 semiconductor relay outputs
• 1 low-voltage dry-contact output
This robust I/O package delivers exceptional flexibility for radiant heating, radiant cooling, fan coils, and other hydronic applications.
All-in-One Heating & Cooling Management
The HC mini consolidates multiple control functions into a single compact device:
• Heating and cooling source control
• Heating/cooling mixing control
• Condensation prevention
• Zone demand management
• Automatic seasonal (winter/summer) switching
It’s a complete all-in-one hydronic controller designed to streamline system integration and improve overall efficiency.
Certified for North American Installations
The DeltaTherm® HC mini is cLCus Certified for use in the USA and Canada.
Conforms to: UL 60730-2-9 and CAN/CSA-E-60730-2-9:18
Smart Temperature Modulation & Easy Commissioning
Featuring floating mixing and outdoor reset-based control, the HC mini continuously adjusts supply water temperature based on real-time heating or cooling demand. With a guided commissioning menu and four pre-configured system layouts, setup is quick, intuitive, and optimized for professional installations.
The controller can operate as part of a full hydronic system or as a standalone mixing control, delivering top-tier performance and contributing significantly to seasonal space-heating energy efficiency.
Built-In Cooling Logic for Summer Operation
During cooling season, the HC mini uses a humidity sensor for dew-point calculation, enabling safe, demand-based radiant cooling without condensation risk.
