ECOSTAR ECO 8 NG, Installation, Operating And Maintenance Manual, Page: 25 / 35

13.06.2017 Rev. 01 24
Function Controls and Adjustments
The BT300 combines the benefits of an electronic fuel-air ratio control system with up to three
motorised actuating devices and an optional modules like an analogue output for speed control of the
combustion air fan with an electronic burner control unit. The leakage test, flame monitoring system,
power control unit and (optional) CO/O2 controller for control and optimi-sation of an oil or gas-fired
forced-draught burner are all integrated. The BT300 is suitable for virtually all combustion plants. Safety
interlock chains, monitors (e.g. gas and air pressure) and sensors are wired directly to the BT300. This
greatly reduces the cost of additional relays and wiring. The BT300 was designed to be attached to the
burner. The short wiring paths also save money. As a result, the BT300 is particularly suitable as standard
equipment for monoblock burners. The compact design of the BT300 burner control system also has its
advantages during commissioning. Standardising the wiring and the unified operator interface minimises
sources of errors from the start, while intelligent information in the display makes searching for errors
much easier.
Magnetic valves must not be energized during pre-purge. Check if valves are in closed
position!
Final Checks
Ø
Switch of all purges after completion of all necessary measurements.
Ø
Start and stop the burner at least 3 times to check the operation of the program.
Ø
Make sure that all safety circuits on the burner and boiler operate properly before leaving the
installation site.