Bosch Thermotechnology · Buderus G515 (Logano G515)
Buderus G515/350
The Buderus G515/350 is a discontinued commercial cast-iron boiler block with 9 sections and a nominal output range of 1,010-1,194.2 MBH for oil, gas or combination burners.
Key figures
- Max input
- —
- Max CSA output
- 1,194.2 MBH
- AFUE
- —
- Min input
- —
Input is gas energy consumed; output is heat delivered. Never size from input alone.
Buderus G515/350 in practice
Best suited to
Applicability and support
- Model number
- G515/350
- Canadian availability
- historical
- 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 Bosch Thermotechnology. Units are shown with every value; notes flag conflicting sources or missing figures.
| Specification | Value | Note |
|---|---|---|
| Input | ||
| Combustion output, lower value | 1,080.3 MBH | |
| Combustion output, upper value | 1,286.7 MBH | |
| Output | ||
| Nominal output, lower value | 1,010 MBH | The technical table prints a nominal-output range per size; both ends are given. |
| Nominal output, upper value | 1,194.2 MBH | |
| Physical and connections | ||
| Number of boiler sections | 9 | |
| Weight, net | 3,506 lb | Weight with packaging approx. 6-8% higher. |
| Boiler water content | 87.2 US gal | 330 l. |
| Maximum permissible supply temperature | 248 °F | Safety limit (high limit safety cut-out); 120 °C. |
| Maximum permissible operating pressure | 87 psi | 6 bar. |
| Operating limits and other | ||
| Fuels | Heating oil, liquid propane or natural gas | Oil/gas-fired boiler block; approved burners listed by Bosch. |
Manuals
Alerts documented for this model
None documented yet.
Questions about the Buderus G515/350?
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
- Bosch Home Comfort US — Commercial Products - Discontinued: Discontinued Boilers · accessed September 9, 2026
- Logano G515 Installation and Service Instructions (6 720 647 208) · accessed September 9, 2026
- Buderus G315/G515/G615 Brochure · accessed September 9, 2026
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.