[800 - 43kW]
Dimensions
| Parameter | Value |
|---|---|
| Depth | 431mm |
| Width | 900mm |
| Height | 685mm |
| Weight without casing | 53kg |
| Boiler flow and return connections | R 1" |
| Condensate drain | R 1¼" |
| Gas connection | R ½ |
Technical Parameters
| Parameter | Value |
|---|---|
| Output | 43kW |
| Nominal heat output at 75/60 °C, Full load | 39.3kW (134.09Btu/h) |
| Nominal heat output at 75/60 °C, Part load | 11.8kW (40.26Btu/h) |
| Nominal heat output at 40/30 °C, Full load | 42.9kW (146.375Btu/h) |
| Nominal heat output at 40/30 °C, Part load | 12.9kW (44.015Btu/h) |
| Rated heat input, Part load | 12.1kw (41.285Btu/h) |
| Rated heat input, Full load | 40.2kW (137.162Btu/h) |
| Boiler efficiency at 75/60 °C (NCV) | 105% |
| Boiler efficiency at 40/30 °C (NCV) | 109% |
| Max working pressure | 4bar |
| Free feed pressure of fan | up to 140Pa |
| ΔT at residual head of 200 mbar | approx. 22K |
| Water content heat exchanger | 3.6l |
| Condensate water rate natural gas H, 40/30 °C | 4.7l/h |
| Minimum water circulation volume | 300l/h |
| Flue gas temperature 40/30 °C | 45°C |
| Flue gas temperature 75/60 °C | 65°C |
| Flue gas mass flow rate, full load | 18.33g/s |
| Natural Gas pressure @ 20 mbar | Y |
| LPG pressure @ 37 mbar | Y |
| Seasonal efficiency (SEDBUK) | 90.3% Band A |
| Max flow temperature | 40°C - 80°C |
| Pump over-run time Position 1 | 4min |
| Pump over-run time Position 2 | 24h |
| CO2 content at full load, natural gas G20 | 9.2% |
| Standard emission factor CO | <15mg/kWh |
| Standard emission factor Nox | <20mg/kWh |
| Gasrate G20 | 4.25m3/h |
| Type of flue gas system | Concentric 80mm / 125mm |
| Mains connection voltage | 230V |
| Electrical power consumption, full load | 180W |
| Electrical power consumption, part load | 85W |
| Gas pressure | 17-24 bar |
Return to 800 Range

Bosch Thermotechnology Ltd.