Rinnai · i-Series (previous generation)
Rinnai i090CN
The Rinnai i090CN is a legacy Canadian I-Series combi boiler — a 90 MBH central-heating input rating per the page copy with a 15 MBH minimum fire and an unlabelled 160 MBH maximum bullet — wall-hung and condensing, documented from its orphaned rinnai.ca page as discontinued history.
Key figures
- Max input
- —
- Max CSA output
- —
- AFUE
- —
- Min input
- 15 MBH
Input is gas energy consumed; output is heat delivered. Never size from input alone.
Rinnai i090CN in practice
The i090CN belongs to the previous-generation Canadian I-Series, sold under lowercase-i codes before the current IP-coded I-Series+ line — a combi with a CN (combi, natural gas) suffix. Its rinnai.ca product-detail page still returns HTTP 200 and the I-Series combi page copy describes Rinnai's exclusive self-cleaning stainless-steel heat exchanger coupled with a secondary flat plate heat exchanger, able to 'deliver whole house heating and simultaneous domestic hot water'; the page is orphaned (not in the site navigation, no models on the category grid) and rinnai.ca's discontinued-product notice applies.
Specs on this Boilers.ca record are the values printed on the i090CN page's own Specifications table on 2026-09-09: 73 lb / (33 kg) product weight, 26.4 / 18.5 / 10.9 in (671/471/276 mm) H×W×D, a 3/4" MNPT gas connection with 3/4" MNPT cold-inlet and hot-outlet DHW connections, and printed Residential ENERGY STAR 'Yes' and SCAQMD 'Ultra Low NOx' rows. The page prints a Gas Type row of Natural Gas while the copy says the boiler runs on natural gas or propane — propane is a field conversion covered by the conversion manual listed on the page.
Two page-print quirks are kept and flagged rather than smoothed over: the hero bullet prints a 160 BTU maximum without labelling which side it belongs to (the copy's 'input rating of 90K Btu' is the CH figure, and the bullet matches the DHW-side rating of this combi platform), and the Specifications row labelled 'Central Heating Capacity' prints the same 90000 BTU figure whose kW conversion reads as an input. No AFUE percentage is printed on the orphan pages, so none is recorded here.
Best suited to
- Owners and service technicians identifying an installed i090CN against the code on its rating plate
- Service planning for a previous-generation I-Series boiler that predates the current I-Series+ literature
Applicability and support
- Model number
- i090CN
- Canadian availability
- historical
- Production status
- discontinued
- ROMA supplies
- Confirmed at consultation
- ROMA services
- Confirmed at consultation
- Warranty
- Not verified
Where ROMA provides on-site service
On-site service is currently offered in Greater Vancouver, BC, including Vancouver, Burnaby, Richmond, Surrey, Coquitlam, North Vancouver, West Vancouver, New Westminster, Port Coquitlam, Port Moody, Delta, Langley, Maple Ridge, Abbotsford, Chilliwack, White Rock, Pitt Meadows, Tsawwassen, Anmore, Lions Bay, Belcarra, Bowen Island, Mission. Everything else on this site is reference information you can use anywhere in Canada.
Specifications
Published specifications
Values as published by Rinnai. Units are shown with every value; notes flag conflicting sources or missing figures.
| Specification | Value | Note |
|---|---|---|
| Input | ||
| Input rating (page copy) | 90 MBH | Page copy states the i090CN 'provides an input rating of 90K Btu'. The Specifications table prints the same figure (90,000 BTU / (26.4 kW)) under 'Central Heating Capacity' — the printed kW conversion matches an input figure, so Boilers.ca records the copy's input reading once and flags the as-printed row label. |
| Minimum input (hero bullet) | 15 MBH | 15,000 BTU (minimum), as printed on the page's hero bullet list (Natural Gas). |
| Maximum input (hero bullet, as printed) | 160 MBH | 160 BTU (maximum), as printed. The bullet is not labelled by side on the page: the copy's input rating is the 90K CH figure, and this unlabelled maximum matches the combi's DHW-side rating rather than its CH side — page quirk kept as printed. |
| Domestic hot water | ||
| Domestic hot water flow rate (maximum) | 7.9 GPM | 7.9 GPM / (29.9 l/min), as printed on the Specifications table. |
| Physical and connections | ||
| Product weight | 73 lb | 73 lb / (33 kg), as printed on the Specifications table. |
| Product height | 26.4 in (671 mm) | As printed on the rinnai.ca Specifications table. |
| Product width | 18.5 in (471 mm) | As printed on the rinnai.ca Specifications table. |
| Product depth | 10.9 in (276 mm) | As printed on the rinnai.ca Specifications table. |
| Gas connection | 3/4" MNPT (19 mm) | Row printed 'Gas | 3/4" MNPT / (19 mm)' in the page's Supply Connections table. |
| DHW connections (cold inlet / hot outlet) | 3/4" MNPT (19 mm) | The combi page's Supply Connections table prints both 'Cold Inlet | 3/4" MNPT / (19 mm)' and 'Hot Outlet | 3/4" MNPT / (19 mm)'. Solo pages print only the Gas connection row. |
| Operating limits and other | ||
| Recirculation capable | Yes | Row printed 'Recirculation Capable | Yes' on the rinnai.ca combi page. |
| Residential ENERGY STAR | Yes | Row printed 'Residential ENERGY STAR® | Yes' on the rinnai.ca Specifications table. |
| SCAQMD approval | Ultra Low NOx | Row printed 'SCAQMD Approved | Ultra Low NOx' on the rinnai.ca Specifications table. |
| Gas type (as printed) | Natural Gas | The Gas Type row prints Natural Gas on every page, while the page copy says the boiler is 'Fueled with either Natural Gas or Propane' — propane is a field conversion, and the page lists the conversion manual. |
Frequently asked questions
Is the Rinnai i090CN still sold in Canada?
No. It is a previous-generation I-Series model whose rinnai.ca page survives only as an orphaned, unlinked product page; rinnai.ca's discontinued-product notice applies and the current Canadian line is the IP-coded I-Series+.
Why does the i090CN record show 'N (maximum)' or an unlabelled bullet maximum for maximum input?
The page prints the maximum only as an unlabelled hero bullet that matches the combi's DHW-side rating rather than its CH rating; the copy's 'input rating' is the CH figure. Boilers.ca records the values as printed and flags the missing side label.
What is the difference between the i090CN and an I-Series+ model?
Everything: the previous-generation I-Series used lowercase-i Canadian codes (CN combis, SN solos) and its own manuals, while the current line is the IP-coded I-Series+. Parts, manuals and error-code tables must be matched to the code on the rating plate.
Questions about the Rinnai i090CN?
Describe what the boiler is doing and get a straight answer about the next step.
On-site service in Greater Vancouver, BC. ROMA lists “Open 7 days” on its site; call to confirm same-day availability.
Sources and verification
- Rinnai Canada — i090CN product page (orphaned legacy page) · accessed September 9, 2026
- Rinnai Canada — discontinued product notice · accessed September 9, 2026
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.