- Available in 5 outputs the GB402 high efficiency commercial boiler with up to 110% efficiency (NCV).
- Ideal for single or multiple boiler installations in medium to large buildings, including schools, hotels, care homes, offices and commercial buildings.
- This boiler must be installed in a sealed system. Bosch Commercial and Industrial supply a range of system separation Plate Heat Exchangers to aid sealed system installations.
Heating boilers
GB402
Compact, quiet and perfect for both new build and renovation projects. It combines high efficiency and low emissions with a wide range of practical benefits.
- NOx emissions below 40mg/kWh
- Efficiency (NCV) up to 110.4% at 40/30 degrees celsius
- Suitable for use with a wide range of controllers (RC35, EM10, MCM10, 4000 Series)
- Suitable to use with a balanced flue arrangement
- Simple commissioning and maintenance
- Fully modulating pre-mix burner
- Maximum operating pressure of 6 bar
- Extremely quiet, operates at 60dB(A) at full load
- Transport weight (depending upon output) 410kg to 520kg
- Able to control fully modulating primary pumps – maximising condensing benefits
Technical data
The energy-efficiency class indicates the energy-efficiency rating of specific product. Energy-efficiency classes for other products from this line may differ.
