Crown Boiler Co. · Bimini (legacy)
Crown Bimini BWC120
The Crown Bimini BWC120 is the 120-MBH-class model of the Sola-control BWC generation (suffix EN for natural gas, EL for propane): an aluminum, wall-hung, direct-vent condensing boiler firing 40–120 MBH with 107 MBH DOE heating capacity and a 93 MBH net water rating.
Key figures
- Max input
- 120 MBH
- Max CSA output
- —
- AFUE
- —
- Min input
- 40 MBH
Input is gas energy consumed; output is heat delivered. Never size from input alone.
Crown Bimini BWC120 in practice
The Bimini BWC120 belongs to the Sola-control generation of Crown's legacy BWC condensing family (models BWC070/090/120/151 documented in the Sola-generation installation manual). Its specification-table row prints a 120/40 MBH maximum/minimum input, 107 MBH DOE heating capacity and a 93 MBH net water rating, with 0.62 US gallons of water volume, 1" NPT supply/return connections, a 1/2" NPT gas connection and an approximate net weight of 110 lb.
The boiler is an aluminum gas condensing design for forced hot water systems at supply temperatures of 180°F or less, designed for installation on a wall with an optional pedestal kit for floor mounting, and it vents directly with the supplied concentric system or approved 3" AL29-4C stainless venting. Add the suffix EN for natural gas or EL for propane — ratings are the same for both fuels per the manual's table note.
The Bimini is legacy: it appears only in the frozen crownboiler.com navigation and is absent from the current Velocity Boiler Works menu, so productStatus is 'discontinued'. The manual prints no AFUE figure, so none is stated here. No official Canadian-sales statement was found, so canadianStatus stays 'unknown'; service work belongs with a licensed contractor.
Best suited to
- Owners documenting an installed Sola-generation Bimini against the legacy manual
- Contractors researching the BWC070/090/120/151 model set and its venting limits
- Legacy-replacement planning where the boiler's rating-plate generation must be matched
Applicability and support
- Model number
- BWC120
- Canadian availability
- unknown
- 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 Crown Boiler Co.. Units are shown with every value; notes flag conflicting sources or missing figures.
| Specification | Value | Note |
|---|---|---|
| Input | ||
| Input, maximum | 120 MBH | Maximum input per the BWC specification table (Table 2.2, Sola-generation installation manual). |
| Input, minimum | 40 MBH | Minimum input per the BWC specification table (Table 2.2). |
| Output | ||
| DOE heating capacity | 107 MBH | DOE heating capacity per the BWC specification table (Table 2.2). |
| Net water rating | 93 MBH | AHRI net water rating per the BWC specification table (Table 2.2). |
| Efficiency | ||
| Efficiency | Not printed in the sourced manual | The BWC Sola-generation installation manual does not print an AFUE figure; Boilers.ca does not state one. |
| Domestic hot water | ||
| Domestic hot water | Heating-only boiler — domestic hot water comes from a separate indirect tank or water heater | |
| Venting and air | ||
| Venting | Direct vent — concentric or approved stainless systems | Sola-generation manual covers the supplied concentric vent system (25 ft), optional 60/100mm components (18–32 ft by model), 80/125mm vertical (95 ft) or horizontal (100 ft) concentric systems, and approved 3" AL29-4C horizontal stainless venting to 100 ft (Table 2.3). |
| Physical and connections | ||
| Water volume | 0.62 gal | Boiler water volume per the BWC specification table (Table 2.2). |
| Supply and return connections | 1" NPT | Supply and return connection size per the BWC specification table (Table 2.2). |
| Gas connection | 1/2" NPT | Gas connection size per the BWC specification table (Table 2.2). |
| Approx. net weight | 110 lb | Approximate net weight per the BWC specification table (Table 2.2). |
| Operating limits and other | ||
| Control | Honeywell Sola control | Text-diagnostics control per the Sola-generation installation manual. |
| Fuel | Natural gas or propane | Add suffix EN for natural gas and EL for propane; ratings are the same for both fuels (Table 2.2 note). |
Alerts documented for this model
Frequently asked questions
What are the BWC120's ratings?
40–120 MBH minimum/maximum input with 107 MBH DOE heating capacity and a 93 MBH net water rating per the BWC specification table (Table 2.2).
What does the EN/EL suffix mean?
Add EN for natural gas or EL for propane to the base model number; the manual states ratings are the same for both fuels.
Was the BWC120 a combi boiler?
No — the Bimini produced space heating only. Domestic water came from a separate tank (the 'Bimini Buddy' add-on documented as an accessory), not from the boiler.
Questions about the Crown Bimini BWC120?
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
- crownboiler.com — Bimini - Residential (BWC) legacy product page · accessed September 9, 2026
- BWC Series Installation Instructions — Sola generation (PDF) · accessed September 9, 2026
Facts checked September 8, 2026. Last updated September 8, 2026. Technical reviewer: not yet assigned.