Crown Boiler Co. · Bermuda 2 (BSIB)
Crown Bermuda 2 BSI138B
The Crown Bermuda 2 BSI138B is a 138 MBH mid size of the current cast-iron gas steam line: 138 MBH input, 113 MBH DOE heating capacity and a 85 MBH AHRI net steam rating (354 sq ft) at 82% AFUE, over 5 cast-iron sections with 7.9 gallons of boiler water.
Key figures
- Max input
- —
- Max CSA output
- —
- AFUE
- 82 %
- Min input
- —
Input is gas energy consumed; output is heat delivered. Never size from input alone.
Crown Bermuda 2 BSI138B in practice
The Bermuda 2 BSI138B is a cast-iron, natural-draft gas steam boiler rated at 138 MBH input with 113 MBH DOE heating capacity and an AHRI net steam rating of 85 MBH (354 sq ft, piping and pickup allowance 1.333) at 82% AFUE per the BSI Space Heating Ratings table. It is built on 5 cast-iron sections with 7.9 gallons of boiler water and a 1.8-gallon steamable water volume (normal water level to low-water cutoff) per the 113113-02 IOM.
The boiler measures 19-1/4" wide × 28" deep × 40-7/16" high with a 6" vent connection and an approximate shipping weight of 485 lb. The lit sheet describes a cast-iron heat exchanger, stainless steel burners, a built-in draft diverter to fit low spaces, an automatic vent damper, a fully assembled rugged jacket and installation on combustible floors, and positions the line for residential and small commercial applications with an approved chimney. Standard build is natural gas; LP gas uses a conversion kit.
Boilers.ca documents this size at model level from the lit sheet and the 113113-02 I&O manual. No official Canadian-sales statement was found, so canadianStatus stays 'unknown'; installation, gas, combustion and venting work belongs with a licensed contractor.
Best suited to
- Steam-heating systems whose connected load fits a 85 MBH AHRI net steam rating (354 sq ft)
- Residential and small commercial buildings with an approved chimney
- Replacement research for cast-iron natural-draft steam boilers
Applicability and support
- Model number
- BSI138B
- Canadian availability
- unknown
- Production status
- current
- 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 Crown Boiler Co.. Units are shown with every value; notes flag conflicting sources or missing figures.
| Specification | Value | Note |
|---|---|---|
| Input | ||
| Input | 138 MBH | Input per the BSI Space Heating Ratings table on the official product page / in the IOM. |
| Output | ||
| DOE heating capacity | 113 MBH | DOE heating capacity per the BSI Space Heating Ratings table. |
| AHRI net steam rating | 85 MBH | AHRI net steam rating 85 MBH (354 sq ft) based on a piping and pickup allowance of 1.333. |
| Efficiency | ||
| Efficiency (AFUE) | 82 % | AFUE per the BSI Space Heating Ratings table. |
| Domestic hot water | ||
| Domestic hot water | Heating-only boiler — domestic hot water comes from a separate indirect tank or water heater | |
| Venting and air | ||
| Vent size | 6" | Vent diameter per the specification table. |
| Venting | Natural draft into an approved chimney | Cast-iron natural-draft steam boiler with a built-in draft diverter; automatic vent damper included on the Bermuda 2 (lit sheet). |
| Physical and connections | ||
| Cast-iron sections | 5 | Number of cast-iron sections per the specification table. |
| Boiler water volume | 7.9 gal | Boiler water volume per the BSI specification table; the IOM also prints the steamable water volume (normal water level to low-water cutoff). |
| Steamable water volume | 1.8 gal | Steamable water volume from NWL (normal water level) to the low-water cutoff level per the 113113-02 IOM Table 3-2; the 12/25 lit sheet prints this column as a whole number. |
| Dimensions (W × D × H) | 19-1/4" × 28" × 40-7/16" | Width (A) × depth (B) × height (C) per the specification table; D is the vent connection dimension. |
| Approximate shipping weight | 485 lb | Approximate shipping weight per the specification table. |
| Operating limits and other | ||
| Fuel | Natural gas or LP gas | Standard build is natural gas; LP gas with a conversion kit per the lit sheet. |
Manuals
- BSI Bermuda 2 Installation, Operating & Service Manual (113113-02, 10/25)113113-02 · 2025-10
- Bermuda 2 BSI Literature Sheet (PN 980631, BSI2 – 12/25)980631 · 2025-12
Alerts documented for this model
None documented yet.
Frequently asked questions
What are the Bermuda 2 BSI138B's ratings?
138 MBH input, 113 MBH DOE heating capacity and a 85 MBH AHRI net steam rating (354 sq ft) at 82% AFUE per the BSI Space Heating Ratings table.
Does the BSI138B need a chimney?
Yes — the Bermuda 2 is a natural-draft steam boiler for applications with an approved chimney, with a built-in draft diverter and an automatic vent damper; it is not a direct-vent or condensing design.
Can the BSI138B run on propane?
Yes — the standard build is natural gas and LP gas is supported with a conversion kit per the lit sheet (NG-to-LP kit 112577-03/-05/-06/-09 by size group).
Questions about the Crown Bermuda 2 BSI138B?
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
- Velocity Boiler Works — Bermuda 2 (BSIB) product page (ratings and dimensions tables) · accessed September 9, 2026
- BSI Bermuda 2 Installation, Operating & Service Manual, 113113-02 (10/25) (PDF) · 113113-02 · accessed September 9, 2026
- Bermuda 2 BSI Literature Sheet, PN 980631 (BSI2 – 12/25) (PDF) · 980631 · accessed September 9, 2026
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.