Upgrade your hydronic heating system with the Rinnai Primary Secondary Heating Kit, engineered specifically for Rinnai M-Series Boilers. Designed to function as a high-performance hydraulic separator, this kit ensures stable water flow, eliminates pump curve matching challenges, and enhances system efficiency across multiple heating zones and temperature requirements.

Whether used in residential or light-commercial installations, the closely spaced tee design optimizes circulation between the boiler loop and the central heating loop—delivering quieter, smoother, and more reliable operation. If you want a cleaner installation, reduced flow resistance, and improved heating balance, this kit is the ideal solution.

Key Features:

• Hydraulic Separator Design – Maintains hydraulic balance between boiler and heating loops.
• Improves System Efficiency – Reduces flow issues and prevents pump interference.
• Ideal for Multi-Zone Systems – Works perfectly with multi-temperature and multi-circuit setups.
• No Pump Curve Matching Required – Simplifies planning and installation.
• Enhances Boiler Performance – Designed specifically for Rinnai M-Series Boilers.
• Durable Construction – Built for long-lasting and reliable heating performance.
• Professional-Grade Compatibility – Suitable for both residential and light commercial heating systems.
  

What’s Included

• 1 × Rinnai Primary Secondary Heating Kit
• All required fittings and components for installation
• Manufacturer documentation/instructions
  

Specifications

Care & Maintenance Instructions

• Inspect system annually to ensure the separator and all fittings remain debris-free.
• Check for leaks or pressure changes as part of routine boiler maintenance.
• Ensure connected piping is flushed and clean for optimal flow.
• Follow Rinnai’s recommended boiler maintenance schedule for best long-term performance.
• Have all service and inspections performed by a certified heating technician.