IBC Technologies · SL Series G3 Commercial
IBC SL 26-260 G3
The IBC SL 26-260 G3 is the smaller of IBC's two commercial SL G3 boilers: 26 to 260 MBH CSA input, 24.9 to 239 MBH CSA output, 95% AFUE, 3" venting to 200 equivalent feet per side and 1 1/2" NPT-M water connections.
Key figures
- Max input
- 260 MBH
- Max CSA output
- 239 MBH
- AFUE
- 95 %
- Min input
- 26 MBH
Input is gas energy consumed; output is heat delivered. Never size from input alone.
IBC SL 26-260 G3 in practice
The SL 26-260 G3 is a wall-hung condensing boiler rated 26–260 MBH CSA input (7.6–76.2 kW) with 24.9–239 MBH output (7.31–70.0 kW) at 95% AFUE. It shares the commercial SL G3 chassis, V-10 touchscreen controller and BACnet connectivity with the larger SL 40-399 G3, and IBC covers both in the commercial I&O manual 120-270E12.
At 162 lb (74 kg) and with 1 1/2" NPT-M water connections, the 260 is the lighter of the two commercial models and vents in 3" Schedule 40 or rigid PPs to 200 equivalent feet per side, with direct-vent or indoor air supply. Its pressure vessel holds 4.64 USG (17.6 L), the maximum boiler flow is 25 USgpm (95 Lpm) and it is rated 30 psig maximum operating pressure with a 30 psig relief valve supplied.
IBC's commercial feature set applies: up to 24-boiler networks and 9.5 MMBtu/h without additional controls, up to four zone pumps, DDC 0-10 VDC or 4-20 mA, MFZ moisture management, reverse-flow detection and an up-to-10-year commercial heat-exchanger warranty. The 260 is heating-only; IBC lists DHW opt-out priority for multi-boiler systems rather than an integrated DHW coil.
Best suited to
- Light-commercial buildings and large homes whose load fits 24.9–239 MBH output
- Multi-boiler plants starting with one SL 26-260 G3 and expanding up to a 24-boiler network
- Mechanical rooms where 3" venting to 200 equivalent feet per side is available
Applicability and support
- Model number
- SL 26-260G3
- 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 | ||
| CSA input, minimum | 26 MBH | 7.6 kW |
| CSA input, maximum | 260 MBH | 76.2 kW |
| Output | ||
| CSA output, minimum | 24.9 MBH | 7.31 kW |
| CSA output, maximum | 239 MBH | 70.0 kW |
| Efficiency | ||
| Efficiency (AFUE) | 95 % | 95% AFUE per IBC's commercial specification table. |
| Domestic hot water | ||
| Domestic hot water | Heating boiler; IBC lists DHW opt-out priority for multi-boiler systems | |
| Venting and air | ||
| Flue material | 3" Schedule 40 / rigid PPs | IBC's page also lists PVC/CPVC/PPs approval. |
| Max. equivalent vent length, each side | 200 ft | |
| Air intake | Direct vent or indoor supply | |
| Physical and connections | ||
| Weight (empty) | 162 lb | 74 kg |
| Heating surface area | 22.71 ft² / 2.11 m² | |
| Pressure vessel water content | 4.64 USG / 17.6 L | |
| Water connections | 1 1/2" NPT-M | |
| Gas connection | 3/4" NPT-F | |
| Relief valve & air vent | 3/4" NPT-F | |
| Condensate connection | 3/4" hose | |
| Electrical | ||
| Power use at full fire (less pumps) | 127 W | 120 V / 60 Hz. |
| Operating limits and other | ||
| Maximum boiler flow rate | 25 USgpm / 95 Lpm | |
| Minimum boiler flow rate | 6 USgpm / 23 Lpm | |
| Max. operating water pressure | 30 psig | 206 kPa; ships with a 30 psig pressure relief valve. |
| Minimum water pressure | 8 psig | 55 kPa. |
| Fuel | Natural gas or propane | CSA input is rated for natural gas or propane on IBC's commercial specification table. |
| Gas supply pressure | 4 – 14 in. w.c. | |
| Ambient temperature | 32 – 122 °F | 0 – 50°C. |
| Minimum water temperature | 34 °F | 1°C. |
| Max. water temperature (electronic hi-limit) | 190 °F | 88°C; lockout limit 201°F / 94°C. |
| Max. ΔT supply/return | 40 °F | 22°C electronic fence. |
| Altitude rating | 0 – 12,000 ft | 3,658 m ASL. |
Manuals
Alerts documented for this model
- Ignition Trials Exceeded
- Water High Limit
- Low Water Cutoff
- Interlock 1 or 2 Open
- Vent High Limit
- Max. delta T Exceeded
- Low RPM / Air Flow
- Module High Current
- Low Module Current
- Low Water Pressure
- Inlet Pres. Sensor
- See: Status > SIM menu > Status
- Roll Out Switch
- Controller Board
- No Boilernet Comm
- No MAC address
- [Vent High Pressure]
- Flame Signal / Vent Block
- Reversed Flow
- Temp. probe error
- Unhandled error code
- Blank – screen dark
- Service mode after update
- Water High Limit / Low Water Cutoff won't clear
- Outlet Limited
- Remote offline
- Unoccupied
- Summer
- Failsafe Setpoint
- Sensor
Frequently asked questions
What input and output does the SL 26-260 G3 cover?
26–260 MBH CSA input (7.6–76.2 kW) and 24.9–239 MBH CSA output (7.31–70.0 kW) per IBC's commercial specification table.
Does the SL 26-260 G3 make domestic hot water?
It is a heating boiler. IBC lists DHW opt-out priority for multi-boiler systems, and the captured commercial pages do not document an integrated DHW coil.
What venting does the 260 use?
3" Schedule 40 or rigid PPs, 200 equivalent feet per side, with direct-vent or indoor air supply; IBC's page also lists PVC/CPVC/PPs approval.
Questions about the IBC SL 26-260 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.
Sources and verification
- IBC SL 26-260G3 — model page (Canada) · accessed September 9, 2026
- IBC Technical Information Portal — SL G3 commercial specification table · accessed September 9, 2026
- IBC SL Series — series page (Canada) · accessed September 9, 2026
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.