What is the consequence if the pressure at the burner valve is lower than 0.28 MPa (lower than 2.8 bar)?

Question

Question Quiz BPL Hot Air - Balloon Pilot License - Operational Procedures

QuizVDS · Accepted Answer

Take-off is prohibited.

QuizVDS · Answer

Tha gas container should be heated by the flame.

QuizVDS · Answer

The heating system may be damaged.

QuizVDS · Answer

The pressure in the gas container may be increased by use of acetylene.

Id 374 - BPL Hot Air - What is the consequence if the pressure at the burner valve is lower than 0.28 MPa (lower than 2.8 bar)?