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High-Performance Hydraulic Separation for Combi Boiler Systems
Maximize the efficiency of your Rinnai I-Series Combination Boiler with the factory-engineered Primary-Secondary Heating Kit 807000212. This kit is specifically designed to handle the unique flow requirements of “Combi” units, ensuring seamless transitions between central heating and on-demand domestic hot water while protecting your boiler’s internal components.
nstalling a Rinnai Combi boiler in the Ontario climate requires precision to ensure comfort isn't sacrificed during deep-freeze winters.
5Year Limited Manufacturer Warranty on parts. 4Most Energy stands behind every installation with our 1-Year Labour Guarantee, ensuring your high-efficiency system delivers peak performance from the very first day.
| Specification | Details (Model 807000212) |
| Applicable Models | IP060160, IP090160C, IP090199C, IP120199C, IP150199, Ip175199C, IP199199C |
| Material | Type L Copper |
| Weight | 7.0 lb (3.2 kg) |
| Height (Total) | 16.33 in. |
| Width (Overall) | 20.05 in. |
| Boiler Connection | 1 in. NPT Dielectric Union (Qty 2) |
| Manifold Connection | 1-1/4 in. CTS Copper |
| Drain Valves | (2) 1 in. Full Port Ball Valves |
| Gauge Port | 1/2 in. FNPT for Temperature/Pressure Gauge |
| PRV Connection | 3/4 in. FNPT |
While both provide hydraulic separation, they are used in different scenarios:
| Feature | Primary-Secondary Kit (807000212) | Low Loss Header (LLH) |
| Best For | Typical Ontario residential homes | Large luxury homes / Commercial |
| System Complexity | Standard (Basement in-floor, rads, air handlers) | Very high (6+ zones, massive flow rates) |
| Air/Dirt Separation | Requires external components | Often integrated into the header |
| Installation | Ready-to-install, compact (16") | Larger footprint, requires custom piping |
| Cost | Cost-effective and efficient | Premium specialized component |
The 4Most Recommendation: For the vast majority of Ontario hydronic homes—including those with basement in-floor heating, cast iron radiators, or air handlers—this Primary-Secondary kit is the most reliable and common solution. It provides all the necessary separation without the added cost and footprint of a commercial-grade low loss header.
Versatile Application: Ideal for systems with high pressure drops, high flow demands, and large zoned configurations common in modern Ontario homes.
Installing a Rinnai Combi boiler in the Ontario climate requires precision to ensure comfort isn't sacrificed during deep-freeze winters.
5Year Limited Manufacturer Warranty on parts. 4Most Energy stands behind every installation with our 1-Year Labour Guarantee, ensuring your high-efficiency system delivers peak performance from the very first day.
Installing a Rinnai Combi boiler in the Ontario climate requires precision to ensure comfort isn't sacrificed during deep-freeze winters.
5Year Limited Manufacturer Warranty on parts. 4Most Energy stands behind every installation with our 1-Year Labour Guarantee, ensuring your high-efficiency system delivers peak performance from the very first day.
No, this kit is an optional accessory and must be purchased separately. While the boiler includes the Pressure Relief Valve (PRV), the plumbing kit is offered as a factory-built solution to ensure proper hydraulic separation and quicker field installation.
The Combi kit is more compact and features dual ball valves with drains to facilitate the specific maintenance needs of combination boilers. It does not include the indirect tank ports found on the Solo model. Furthermore, because the Combi boiler features a built-in system pump, this kit is engineered for maximum compactness and does not provide extra space or a flange for an external recirculation system pump.
This kit is necessary when you have a multi-zone system or multiple recirculation pumps in your hydronic setup (such as a mix of radiators and in-floor heating). Its job is to separate the primary boiler loop from the secondary loop, ensuring that opening or closing various zones does not fluctuate the flow through the boiler heat exchanger.
Both separate the primary and secondary loops. A Low Loss Header is typically used for massive, high-flow commercial systems or very complex luxury homes. This Primary-Secondary Kit is a "ready-to-install" solution designed specifically for standard residential applications like in-floor heating, baseboards, and air handlers. It is much more common and cost-effective for typical Ontario homes.
Toronto, Markham, Richmond Hill, Vaughan, Aurora, Newmarket, Scarborough, Brampton, and Mississauga.
Extended Service Area: Stouffville, Oshawa, Barrie, Orangeville, Hamilton, St. Catharines, Guelph, Kitchener.
