Bryan Boilers · Free Flex (FF) Series
Bryan Free Flex 3000
The Bryan Free Flex 3000 is a stainless-steel flexible-watertube condensing boiler rated 3,000,000 BTU/hr input and 2,820,000 BTU/hr output at 95% thermal / 94% combustion efficiency, 84 BHP, with 5:1 turndown in Bryan's published submittal.
Key figures
- Max input
- 3,000,000 BTU/HR
- Max CSA output
- 2,820,000 BTU/HR
- AFUE
- —
- Min input
- 600,000 BTU/HR
Input is gas energy consumed; output is heat delivered. Never size from input alone.
Bryan Free Flex 3000 in practice
Bryan's Free Flex 3000 submittal prints 600,000 BTU/hr low fire, 3,000,000 BTU/hr high fire and 2,820,000 BTU/hr high-fire output at 84 BHP, with 95% thermal efficiency and 94% combustion efficiency on natural gas only, 39 gallons of water volume and a 2500 lb approximate shipping weight.
The unit fires at full modulation with 5:1 burner turndown; the submittal prints 'Low NOx Emissions: Capable, Consult Factory'. Flows range from 67 gpm at 85°F ΔT (minimum) to 285 gpm at 20°F ΔT (maximum), and the dimensions table lists 75" high × 35" wide × 93" long with 3" Flange water outlet and inlet, 10" vent and air intake and a 2" gas inlet.
The heat exchanger is ASME stainless steel flexible watertube with field-replaceable tubes, MAWP 160 PSIG and 210°F maximum temperature, backed by a ten-year pressure vessel warranty and lifetime thermal shock warranty. Bryan publishes the parts manual and Concert control manual as public downloads. No official Canadian-sales statement was found.
Best suited to
- Commercial condensing plants documenting an installed Free Flex 3000 against Bryan's submittal
- Projects that require field-replaceable stainless water tubes
- Variable-primary or primary/secondary hydronic systems in the 84 BHP class
Applicability and support
- Model number
- FREE FLEX-3000
- 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 Bryan Boilers. Units are shown with every value; notes flag conflicting sources or missing figures.
| Specification | Value | Note |
|---|---|---|
| Input | ||
| Input, low fire | 600,000 BTU/HR | As printed in the Free Flex submittal ratings table. |
| Input, high fire | 3,000,000 BTU/HR | As printed in the Free Flex submittal ratings table. |
| Output | ||
| Output, high fire | 2,820,000 BTU/HR | As printed in the Free Flex submittal ratings table. |
| Efficiency | ||
| Thermal efficiency | 95 % | As printed in the Free Flex submittal ratings table; Bryan's page states AHRI certified at 95% thermal efficiency. |
| Combustion efficiency | 94 % | As printed in the Free Flex submittal ratings table. |
| Venting and air | ||
| Vent and air intake | 10" | As printed in the Free Flex submittal dimensions/connections table. |
| Physical and connections | ||
| Water volume | 39 gal | As printed in the Free Flex submittal ratings table. |
| Approx. shipping weight | 2,500 lb | As printed in the Free Flex submittal ratings table. |
| Width | 35" | As printed in the Free Flex submittal dimensions table. |
| Length | 93" | As printed in the Free Flex submittal dimensions table. |
| Height | 75" | As printed in the Free Flex submittal dimensions table. |
| Water connections (out / in) | 3" Flange / 3" Flange | As printed in the Free Flex submittal dimensions/connections table. |
| Gas inlet connection | 2" | As printed in the Free Flex submittal dimensions/connections table. |
| Operating limits and other | ||
| Boiler horsepower | 84 BHP | As printed in the Free Flex submittal ratings table. |
| Fuel | Natural Gas ONLY | As printed in the Free Flex submittal ratings table. |
| Burner turndown | 5:1 | As printed in the Free Flex submittal ratings table. |
| Low NOx emissions | Capable, Consult Factory | As printed in the Free Flex submittal ratings table. |
| Minimum flow rate | 67 gpm at 85°F ΔT | As printed in the Free Flex submittal flows and pressure-drops table. |
| Maximum flow rate | 285 gpm at 20°F ΔT | As printed in the Free Flex submittal flows and pressure-drops table. |
| ASME Section IV rating | 160 PSIG / 210°F | ASME Section IV (Max 160 PSIG / 210°F) as printed on the Free Flex submittal. |
Manuals
Alerts documented for this model
None documented yet.
Frequently asked questions
What are the Free Flex 3000 ratings?
Bryan's submittal prints 600,000 BTU/hr low fire, 3,000,000 BTU/hr high fire, 2,820,000 BTU/hr output, 84 BHP, 95% thermal efficiency and 5:1 turndown.
What fuel does the Free Flex 3000 use?
The submittal prints 'Fuel: Natural Gas ONLY' for the documented sizes.
Are the Free Flex water tubes replaceable in the field?
Yes. Bryan's Free Flex page states the design is 'fully field repairable' with field-replaceable stainless steel water tubes.
Questions about the Bryan Free Flex 3000?
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
- Bryan — Free Flex 3000 submittal data sheet (PDF) · accessed September 9, 2026
- Bryan Boilers — Free Flex Commercial Condensing Boiler · accessed September 9, 2026
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.