IBC Technologies · SL Series G3
IBC SL 14-115 G3
The IBC SL 14-115 G3 is a wall-hung residential condensing boiler with a 14 to 115 MBH input range and 95% AFUE, running on natural gas or propane. It is the size most often matched to a typical Lower Mainland detached home with radiators or in-floor heat.
Key figures
- Max input
- 115 MBH
- Max CSA output
- 109 MBH
- AFUE
- 95 %
- Min input
- 14 MBH
Input is gas energy consumed; output is heat delivered. Never size from input alone.
IBC SL 14-115 G3 in practice
With a maximum input of 115 MBH and a CSA output of 109 MBH, the SL 14-115 G3 sits in the middle of the SL G3 range. Its low-fire input of 14 MBH lets it run steadily on mild days rather than cycling on and off, which matters in Vancouver's long shoulder seasons where a boiler spends most of its hours at part load.
It is a heating-only boiler. If you need domestic hot water from the same appliance, IBC documents a direct connection to an indirect water tank. If you want a single combined unit, a combi boiler from another series or brand may suit better; the buying guide on this site explains the trade-offs.
Venting is 3" Schedule 40 or 3" polypropylene with up to 240 equivalent feet on each side, or 100 feet in 2". This flexibility is one reason it is often specified when replacing an older atmospheric boiler whose chimney is no longer usable.
Best suited to
- Detached homes and larger townhouses with hydronic radiators, baseboards or in-floor loops
- Replacing an older mid-BTU cast-iron or atmospheric boiler
- Homes adding an indirect tank for hot water
Applicability and support
- Model number
- SL 14-115G3
- Canadian availability
- available
- 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 IBC Technologies. Units are shown with every value; notes flag conflicting sources or missing figures.
| Specification | Value | Note |
|---|---|---|
| Input | ||
| Input, minimum | 14 MBH | 4.10 kW |
| Input, maximum | 115 MBH | 33.7 kW |
| Output | ||
| CSA output, minimum | 13.3 MBH | 3.90 kW |
| CSA output, maximum | 109 MBH | 32 kW. DOE heating capacity is not published on the IBC pages we cite. |
| Efficiency | ||
| Efficiency (AFUE) | 95 % | Annual fuel utilization efficiency as published by IBC. |
| Domestic hot water | ||
| Domestic hot water | Not a combi; indirect tank connects directly to the boiler | |
| Venting and air | ||
| Flue material | 3" Schedule 40 or 3" PPs (80 mm) | |
| Max. equivalent vent length, 3" | 240 ft | Each side; see the installation manual for the equivalent-length method. |
| Max. equivalent vent length, 2" | 100 ft | |
| Air intake | Direct vent or indoor supply | |
| Physical and connections | ||
| Weight (empty) | 85 lb | 39 kg |
| Water connections | 1" NPT | |
| Gas connection | 1/2" NPT | |
| Condensate connection | 3/4" hose | |
| Operating limits and other | ||
| Fuel | Natural gas or propane | Conversion kit included per IBC model page. |
| Turndown ratio | up to 8:1 | IBC model page figure. The Canadian brochure headline says up to 10:1. |
| Gas supply pressure | 4 – 14 in. w.c. | |
| Max. operating pressure | 30 psig | |
| Max. water temperature | 190 °F | Electronic limit. |
| Altitude rating | 0 – 12,000 ft | |
Manuals
- Installation & Operating Manual — SL G3 residential, doc 120-276E13120-276E13 · 2026-08-11
- SL Series G3 Brochure (Canada)900-041 R8 · 2019-05-29
Alerts documented for this model
- Error – Ignition trials exceeded
- Error – Water High-Limit
- Error – Low Water Cutoff
- Error: Interlock [1 or 2] Open
- Error: Vent High Limit
- Error – Max. delta T Exceeded
- Error – Low RPM / Air Flow
- Error – Fan Pressure
- Error – Module High Current
- Error – Low Module Current
- Error – Low Water Pressure
- Error – Inlet Pres. Sensor
- Error – See: Status > SIM menu > Status
- Error – Roll Out Switch
- Error – Controller Board
- Error – No Boilernet Comm
- Error – No MAC address
- Error – Flame Signal / Vent Block
- Error – Reversed Flow
- Error – Temp. probe error
- Error – Unhandled error code
- Outlet Limited
- Remote offline
- Unoccupied
- Summer
- Failsafe Setpoint
Frequently asked questions
What size home suits the SL 14-115 G3?
That depends on a heat-loss calculation, the emitters and hot-water demand, not floor area alone. As a rough guide it is commonly used in detached homes; ROMA confirms sizing during an assessment.
Does the SL 14-115 G3 heat domestic water?
Not by itself. It is heating-only; IBC documents connecting an indirect water tank directly to the boiler for domestic hot water.
Is the SL 14-115 G3 available in Canada?
Yes. It is listed on IBC's Canadian site and in the Canadian edition of the SL G3 brochure. Whether ROMA supplies it for your project is confirmed at consultation.
Questions about the IBC SL 14-115 G3?
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.
Compare and explore
- IBC SL 10-85 G3 vs SL 14-115 G3Comparison
- IBC SL 14-115 G3 vs SL 20-160 G3Comparison
- IBC SL 14-115 G3 vs SL 30-199 G3Comparison
- IBC SL 14-115 G3 vs Viessmann Vitodens 100-W B1HE-120Comparison
- IBC SL 14-115 G3 vs NTI Trinity FTVN150Comparison
- IBC SL 14-115 G3 vs Lochinvar Knight WHB110Comparison
- IBC SL 10-85 G3Same series
- IBC SL 20-160 G3Same series
- IBC SL 30-199 G3Same series
- SL Series G3 series hub
- Buying guide
Sources and verification
- IBC SL 14-115G3 — model page · accessed September 7, 2026
- SL Series G3 Brochure (Canada), spec table · 900-041 R8 · accessed September 7, 2026
Facts checked September 7, 2026. Last updated September 7, 2026. Technical reviewer: not yet assigned.