| 1 | The whole system should be detected for leakage. | |
| 2 | Leak-check the system at its working pressure. | |
| 3 | Leak testing should be completed on the system after each cylinder change. | |
| 4 | Ion induction installation: Automatic leak hunting, flame-out safe protection. The house is safer. | |
| 5 | Ion induction installation: Automatic leak hunting, flame-out safe protection. |