Dunkirk Boilers · DCC/DCB (AI condensing)
Dunkirk DCC-205
The Dunkirk DCC-205 is the 205 MBH-class combi of the DCC 'AI' condensing line: 29.5 to 164 MBH central-heating input with DHW input to 205 MBH (5 GPM at a 70 °F rise), 95% AFUE and 153 MBH heating capacity. The DCC page prints '(While supplies last)' with no current documents, so this model is discontinued (sell-through).
Key figures
- Max input
- 164 MBH
- Max CSA output
- —
- AFUE
- 95 %
- Min input
- 29.5 MBH
Input is gas energy consumed; output is heat delivered. Never size from input alone.
Dunkirk DCC-205 in practice
The DCC-205 is the 205 MBH-class combi of Dunkirk's DCC line — the wall-hung 'AI' condensing platform the official page describes with AI control technology that automatically sets up the boiler during startup, recognizes natural or LP gas without a conversion kit, and continuously monitors combustion. The sell sheet prints 29.5 to 164 MBH central-heating input with DHW input of 29.5 to 205 MBH at 5 GPM and a 70 °F rise, 153 MBH heating capacity, a 133 MBH net water rating and 95% AFUE.
It is a wall-hung condensing design at 30" x 17-3/4" (21-1/2" deep) weighing 125 lb, on the 316L stainless steel heat exchanger and burner with a stainless steel brazed-plate DHW heat exchanger, with System supply/return 1" G (straight thread), gas at 3/4" NPT, DHW outlet and cold inlet 3/4" copper sweat, condensate at 3/4" NPT, and the LABOR SAVER manifold included (System supply/return with LABOR SAVER manifold 1-1/2" copper sweat).
Status as printed on September 9, 2026: the DCC page prints '(While supplies last)' under the product title with no current documents, so this model is recorded as discontinued (sell-through). The floor-standing DCCF version is documented at the same ratings on its own page. Gas work belongs with a licensed contractor against the archived Rev. A manual (PN 240013687).
Best suited to
- Homes whose heat-loss calculation and hot-water draws fit the 205 MBH-class combi
- Owners of an installed DCC/DCB unit identifying the model and pulling the archived documentation
Applicability and support
- Model number
- DCC-205
- Canadian availability
- unknown
- Production status
- discontinued
- 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 | 29.5 MBH | CH input minimum in MBH as printed in the official DCC/DCB sell sheet table. |
| Central-heating input, maximum | 164 MBH | CH input maximum in MBH as printed in the official DCC/DCB sell sheet table. |
| Output | ||
| Heating capacity | 153 MBH | Heating capacity in MBH as printed in the official DCC/DCB sell sheet table. |
| Net water rating | 133 MBH | Net water rating in MBH (piping and pickup allowance of 1.15) as printed in the official DCC/DCB sell sheet table. |
| Efficiency | ||
| AFUE | 95 % | 95% AFUE as printed in the official DCC/DCB sell sheet table and on the product page. |
| Domestic hot water | ||
| DHW input, minimum | 29.5 MBH | DHW input minimum in MBH as printed in the official DCC/DCB sell sheet table. |
| DHW input, maximum | 205 MBH | DHW input maximum in MBH as printed in the official DCC/DCB sell sheet table. |
| DHW flow rate at 70 °F rise | 5 gpm | DHW flow rate based on a 70 °F temperature rise, as printed in the official DCC/DCB sell sheet table. |
| Turndown, DHW mode | 7:1 | As printed on the official product page for this model. |
| Venting and air | ||
| Venting | Coaxial polypropylene or 2-pipe polypropylene/CPVC/PVC | Coaxial polypropylene 5"/3" or 2-pipe polypropylene 2" or 3", or 2-pipe CPVC/PVC 3", per the sell sheet (2-pipe requires an adapter sold separately). |
| Physical and connections | ||
| Dimensions (H x W x D) | 30" x 17-3/4" x 21-1/2" | Dimensions per the official sell sheet; the 165/205-class sizes use the 21-1/2" depth. |
| Weight | 125 lb | Per the official DCC/DCB sell sheet (94 lb on the 75/100 sizes, 103 lb on the 115/150 sizes, 104 lb on the 125, 125 lb on the 165/205 sizes). |
| Boiler water content | 1-1/4 gal | Per the official DCC/DCB sell sheet (1 gal on the 75-150 sizes, 1-1/4 gal on the 165/205 sizes). |
| Heat exchanger | 316L stainless steel heat exchanger and burner plus stainless steel brazed-plate DHW heat exchanger | As printed on the official DCC product page: DCC-205, DCC-150 and DCC-115 are also equipped with a stainless steel brazed-plate heat exchanger. |
| Electrical | ||
| Power supply | 120 V ac, 60 Hz, 1 phase, less than 21 A | Per the official DCC/DCB sell sheet (15 A circuit recommended). |
| Operating limits and other | ||
| Turndown, heating mode | 5.5:1 | As printed on the official product page for this model. |
| Connections | System supply/return 1" G (straight thread); gas 3/4" NPT; condensate 3/4" NPT; DHW outlet and cold inlet 3/4" copper sweat | Per the official sell sheet connection table; with the LABOR SAVER manifold, system supply/return step up to System supply/return with LABOR SAVER manifold 1-1/2" copper sweat. |
| Gas type | Natural gas or LP — recognized automatically | The AI control recognizes natural or LP gas during startup; no conversion kit required, as printed on the page. |
Manuals
- DCC/DCB 75-205 Boiler Manuals Rev. A (PN 240013687, MGC-2209-REV-A)MGC-2209-REV-A (Rev. A), PN 240013687 · 2022-09
- DCC/DCB Sell Sheet (240013308 Rev. 10/20/22)240013308 Rev. 10/20/22
Alerts documented for this model
Frequently asked questions
Is the DCC-205 discontinued?
The official page prints '(While supplies last)' with an empty 'Current Documents' tab, which Boilers.ca records as discontinued (sell-through); the Rev. A manual set stays downloadable under 'Archived Documents'.
Is the DCC-205 a combi boiler?
Yes — the DCC models combine central heating with on-demand domestic hot water (DHW to 205 MBH, up to 5 GPM at a 70 °F rise on the DCC-205).
Is DCC/DCB the same boiler as Utica's MAC/MAH?
Yes — both ECR International brands sell the same AI wall-hung platform and share the Rev. A boiler manual print PN 240013687 (MGC-2209-REV-A).
Questions about the Dunkirk DCC-205?
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
- Dunkirk — DCC product page ('(While supplies last)') · accessed September 9, 2026
- DCC/DCB Sell Sheet (240013308 Rev. 10/20/22) · accessed September 9, 2026
- DCC/DCB 75-205 Boiler Manuals Rev. A (PN 240013687) · accessed September 9, 2026
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.