Dunkirk Boilers · Royal (CO/CH)
Dunkirk Royal CH-180
The Royal CH-180 is Dunkirk's 180 MBH-class wall-hung residential heating-only boiler: 18 to 180 MBH central-heating input at 95.2% AFUE with 165 MBH heating capacity, a 143 MBH net AHRI water rating and up to 10:1 turndown.
Key figures
- Max input
- 180 MBH
- Max CSA output
- —
- AFUE
- 95.2 %
- Min input
- 18 MBH
Input is gas energy consumed; output is heat delivered. Never size from input alone.
Dunkirk Royal CH-180 in practice
The Royal CH-180 is the 180 MBH-class heating-only model of Dunkirk's current Royal CH residential line — the official page describes the CH (Central Heat) models as five sizes from 80,000 to 180,000 BTU/hr input. The brochure table prints 18 to 180 MBH central-heating input at 95.2% AFUE with 165 MBH heating capacity and a 143 MBH net AHRI water rating; as a heating-only boiler it produces no domestic hot water itself, which stays with a separate tank or water heater on the system.
It is a wall-hung condensing design on the next-generation enhanced stainless steel water-tube heat exchanger with up to 10:1 turndown, twin-pipe direct venting (the included 3-in-1 adjustable connector accepts PVC, CPVC, polypropylene or stainless steel; flue 3" with a 2" reducer) and 3/4" NPT CH supply/return with 3/4" NPT gas. All residential Royal sizes share the 28.23" x 17.4" x 16.93" wall-hung cabinet at under 101 lb per the page copy.
The official pages market the Royal series as ENERGY STAR certified at 95.2% AFUE with cascade control to 16 boilers, an 18-language control display and a 10-year heat exchanger / 5-year parts limited warranty (residential). Ratings on this record are the US-market figures Dunkirk prints; Boilers.ca found no official Canadian rating listings, so canadianStatus stays 'unknown'. Gas work belongs with a licensed contractor against the residential IOM (E93.1907.035.915.C).
Best suited to
- Homes whose heat-loss calculation fits inside 180 MBH of heating input
- Heating-only systems keeping domestic hot water on a separate tank or water heater
- Wall-hung installations on the shared 28.23 x 17.4 x 16.93 in Royal cabinet
Applicability and support
- Model number
- CH-180
- Canadian availability
- unknown
- Production status
- current
- ROMA supplies
- Confirmed at consultation
- ROMA services
- Confirmed at consultation
- Warranty
- Series terms
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 Dunkirk Boilers. Units are shown with every value; notes flag conflicting sources or missing figures.
| Specification | Value | Note |
|---|---|---|
| Input | ||
| Central-heating input, minimum | 18 MBH | CH input minimum in MBH as printed in the official Royal residential brochure table. |
| Central-heating input, maximum | 180 MBH | CH input maximum in MBH as printed in the official Royal residential brochure table. |
| Output | ||
| Heating capacity | 165 MBH | Heating capacity in MBH as printed in the official Royal residential brochure table. |
| Net AHRI water rating | 143 MBH | Net AHRI water rating in MBH as printed in the official Royal residential brochure table. |
| Efficiency | ||
| AFUE | 95.2 % | 95.2% AFUE as printed for every residential Royal model in the official brochure table and on the product pages. |
| Venting and air | ||
| Venting | Twin-pipe direct vent with the included 3-in-1 adjustable boiler vent connector | Venting approved in PVC, CPVC, polypropylene and stainless steel; flue 3" (2" with reducer) per the residential brochure; direct venting up to 150 ft per the page copy. Gas work belongs with a licensed contractor. |
| Physical and connections | ||
| Dimensions (H x W x D) | 28.23" x 17.4" x 16.93" | Brochure callouts for the wall-hung cabinet; the combi models add a plate on the front, per the research notes. |
| Heat exchanger | Next-generation enhanced stainless steel water-tube heat exchanger | As printed on the official pages; the commercial sizes use the DUO Power water-tube heat exchanger. |
| Burner | Stainless steel pre-mix burner (BlueJet) | BlueJet burner improves flame stability and reduces NOx, per the brochure. |
| Electrical | ||
| Power supply | 120 V ac, 60 Hz, 1 phase; 12 A minimum size circuit (15 A recommended) | As printed in the official Royal residential brochure. |
| Operating limits and other | ||
| Connections | CH supply/return 3/4" NPT; gas 3/4" NPT; condensate flexible hose 1.06" OD | Connection sizes per the connection table in the official Royal residential brochure. |
| Fuel | Natural gas or propane | Natural gas is the factory configuration; the official pages state the boiler is easily converted to propane (LP). |
| Turndown | Up to 10:1 | Up to 10:1 turndown as printed on the official product pages. |
| Control | Intuitive control with cascade to 16 boilers, 0-10 V and Modbus | Built-in cascade control for up to 16 boilers; display settable to 1 of 18 languages; 0-10 Volts equipped and BMS Modbus standard, per the brochure. |
| Warranty | 10-year heat exchanger and 5-year parts limited warranty (residential) | As printed on the official Royal CO and CH residential product pages. |
Manuals
- Royal Series Residential Boiler Manual Rev. C EN (E93.1907.035.915.C)E93.1907.035.915.C (Rev. C) · 2026-03
- Royal Series Residential Boiler Brochure (240013861 Rev. 08/12/26)240013861 Rev. 08/12/26
Alerts documented for this model
Frequently asked questions
Is the Royal CH-180 a combi boiler?
No — the CH models are central-heat only. Domestic hot water comes from a separate tank or water heater; Dunkirk's combi versions carry CO codes.
What is the Royal CH-180's efficiency rating?
95.2% AFUE, as printed for every residential Royal model in the official brochure table and on the product pages.
Where does the CH-180 sit in the Royal CH range?
It is the 180 MBH-class size; the residential CH range spans CH-80 through CH-180, and Dunkirk documents commercial CH sizes separately.
Questions about the Dunkirk Royal CH-180?
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.
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Sources and verification
- Dunkirk — Royal CH (residential) product page · accessed September 9, 2026
- Royal Series Residential Boiler Brochure (240013861 Rev. 08/12/26) · accessed September 9, 2026
- Royal Series Residential Boiler Manual Rev. C EN (E93.1907.035.915.C) · accessed September 9, 2026
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.