Engine: Electricity

1. A The fuel should be secured to the boiler and the boiler allowed to remain idle for a few minutes before another light off attempt is made.
2. B Another light off attempt (with no limit) can be undertaken before any additional precautions need to be observed.
3. C The fuel should be secured to the boiler and the furnace purged of combustible vapors with the forced draft fan before another light off attempt is made.
4. D Another light off attempt (just one) can be undertaken before any additional precautions need to be observed.

Tip: press A-D to answer