Bosch Boiler Manuals
Select your Bosch model number below for installation steps, settings, maintenance schedules, troubleshooting and the full specification sheet. Your model number is printed on the rating plate.
Bosch boilers by model number
| Model | Description | Certified |
|---|---|---|
| KBR 21-3Greenstar FS | 95% AFUE condensing gas boiler | November 2021 |
| KBR 28-3Greenstar FS | 95% AFUE condensing gas boiler | November 2021 |
| KBR 35-3Greenstar FS | 95% AFUE condensing gas boiler | November 2021 |
| KBR 42-3Greenstar FS | 95% AFUE condensing gas boiler | November 2021 |
| KWB 28-3Greenstar FS | 95% AFUE condensing gas boiler | November 2021 |
| KWB 35-3Greenstar FS | 95% AFUE condensing gas boiler | November 2021 |
| KWB 42-3Greenstar FS | 95% AFUE condensing gas boiler | November 2021 |
| SINGULAR 4000VRC-80 | 95% AFUE condensing gas boiler | November 2021 |
| SINGULAR 5200VRC-140 | 95% AFUE condensing gas boiler | November 2021 |
| ZBR 21-3Greenstar | 95% AFUE condensing gas boiler | November 2021 |
| ZBR 28-3Greenstar | 95% AFUE condensing gas boiler | November 2021 |
| ZBR 35-3Greenstar | 95% AFUE condensing gas boiler | November 2021 |
| ZBR 42-3Greenstar | 95% AFUE condensing gas boiler | November 2021 |
| ZWB 28-3Greenstar | 95% AFUE condensing gas boiler | November 2021 |
| ZWB 35-3Greenstar | 95% AFUE condensing gas boiler | November 2021 |
| ZWB 42-3Greenstar | 95% AFUE condensing gas boiler | November 2021 |