Bosch Thermotechnology · Buderus Stainless Steel Boiler (SSB)
Buderus SSB1000TL4 (Gen 1)
The Buderus SSB1000TL4 (Gen 1) is a factory-cascaded commercial condensing boiler combining 4 SSB1000TL modules: 4,096 MBH maximum input, 40:1 turndown, 96.8% AHRI thermal efficiency and 3,964 MBH gross output at 3,396 lb dry weight.
Key figures
- Max input
- 4,096 MBH
- Max CSA output
- —
- AFUE
- —
- Min input
- 100 MBH
Input is gas energy consumed; output is heat delivered. Never size from input alone.
Buderus SSB1000TL4 (Gen 1) in practice
Best suited to
Applicability and support
- Model number
- SSB1000TL4
- 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 Bosch Thermotechnology. Units are shown with every value; notes flag conflicting sources or missing figures.
| Specification | Value | Note |
|---|---|---|
| Input | ||
| Input, maximum | 4,096 MBH | 4,096,000 BTU/hr (1200 kW class per sheet); AHRI certified. |
| Input, minimum | 100 MBH | 100,000 BTU/hr. |
| Output | ||
| Gross output (AHRI) | 3,964 MBH | 3,964,000 BTU/hr. |
| Net rating (AHRI) | 3,446.8 MBH | 3,446,800 BTU/hr. |
| Efficiency | ||
| Combustion efficiency (AHRI) | 95.4 % | |
| Thermal efficiency (AHRI) | 96.8 % | Printed for every SSB size and cascade column in the submittal sheet. |
| Venting and air | ||
| Vent/air intake connections | 10" (254 mm) | Twin-pipe or single (concentric or single-pipe) termination, vertical or horizontal. |
| Physical and connections | ||
| Water volume | 80 gal | 303 l. |
| Weight, dry | 3,396 lb | 1540 kg. |
| Shipping weight | 3,764 lb | 1707 kg. |
| Dimensions (L × W × H) | 31.5 × 144.7 × 70.9 in (800 × 3675 × 1800 mm) | Per the engineering submittal sheet dimension drawings. |
| Surface heat exchanger (total) | 344 sq ft (32.0 m²) | |
| Maximum allowable working pressure (MAWP) | 80 psi | 80 psig per ASME Section IV; each module carries a 75 lb pressure relief valve. |
| Maximum operating temperature | 194 °F | 90 °C. |
| Maximum heat-exchanger temperature | 210 °F | 98.9 °C. |
| Electrical | ||
| Electrical requirement | 60.4 FLA | 120 VAC / 1 phase / 60 Hz; maximum current drawn if all pumps reach rated horsepower. |
| Operating limits and other | ||
| Turndown | 40:1 | 4 SSB1000TL modules combined; the cascade submittal sheet rates 40:1 turndown. |
| Heat exchanger | Dual 316L stainless steel heat exchanger modules | Gen 1 uses two plasma-welded 316L dual-tube stainless steel modules with independent fan, gas valve, burner tube and circulator per module. |
| Gas connection | 3" flanged | |
| Water connections | 5" | System supply and return; flanged on the 5" connection. |
| Fuel | Natural gas or propane | Factory set for natural gas; field-convertible to LP with the supplied conversion kit. |
Manuals
- SSB800/1000/1000TL Stainless Steel Condensing Boiler Installation Instructions (doc 6720866942, 10.2020)6720866942 · 2020-10
- SSB800/1000/1000TL Engineering Submittal Sheet (BTC 438008103 F, 10.2020)BTC 438008103 F · 2020-10
- SSB1000TL/TL2/TL3/TL4 Engineering Submittal Sheet (BTC 438008104 E, 10.2020)BTC 438008104 E · 2020-10
Alerts documented for this model
None documented yet.
Questions about the Buderus SSB1000TL4 (Gen 1)?
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
- Buderus SSB800 (Gen 1)Same series
- Buderus SSB1000 (Gen 1)Same series
- Buderus SSB1000TL (Gen 1)Same series
- Buderus SSB800 (Gen 2)Same series
- Buderus SSB1000 (Gen 2)Same series
- Buderus SSB1000TL (Gen 2)Same series
- Buderus SSB1000TL2 (Gen 1)Same series
- Buderus SSB1000TL3 (Gen 1)Same series
- Buderus SSB1000TL2 (Gen 2)Same series
- Buderus SSB1000TL3 (Gen 2)Same series
- Buderus SSB1000TL4 (Gen 2)Same series
- Buderus Stainless Steel Boiler (SSB) series hub
- Buying guide
Sources and verification
- Bosch Home Comfort Canada — Buderus Stainless Steel Boiler (SSB) Gen 1 · accessed September 9, 2026
- Bosch Home Comfort US — Buderus Stainless Steel Boiler (SSB) Gen 1 · accessed September 9, 2026
- SSB 1000TL/TL2/TL3/TL4 Gen 1 Engineering Submittal Sheet · accessed September 9, 2026
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.