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Rinnai  |  SKU: 803000023

Rinnai Primary Secondary Heating Kit for M-Series Boilers – Hydraulic Separator

$317.00
+
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Delivery and Shipping

Your order processing time is 1 to 2 days. Please note that the cut-off time for order placement is 6 p.m. Orders received after this time will be processed on the following business day.

Your order will arrive within 4 to 7 days on average (free shipping over $200). Shipping for orders under $200 incurs a flat fee of $15. We currently offer shipping only within the continental United States (island deliveries may incur additional costs); international shipping is not available.

Mostly all of our orders are shipped via one of our third-party freight carriers (18-wheeler). If your order has an item that is shipped on a freight carrier, you will be contacted to schedule a curbside delivery time. Please make sure to put the correct phone number at checkout.

Upon placing your order, you will receive a confirmation e-mail. This message will confirm your order has been received by our system, and your credit card was approved for purchase. We will not charge your card until the item has shipped unless it's back ordered and we need to hold an item for you. 

As soon as your order is received on our end, we process it!

Authorized Online Dealer
Free Shipping + No Sales Tax (exclusions may apply)
We Beat The Lowest Price
Fast 4-7 Day Delivery
Manufacturer Warranty Included
Questions? Call Our Experts: +1 (800) 484-0224

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Description

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

Specification Details
Part Number 803000023
Compatibility Rinnai M-Series Boilers
Function Hydraulic separator / closely spaced tee for boiler and heating loop separation
Application Primary-secondary piping systems; multi-zone and multi-temperature systems
Material Manufacturer-graded durable metal construction
Installation Indoor hydronic heating systems
Dimensions Manufacturer does not provide published dimensions; designed specifically for M-Series configuration

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.