6. Trial Run
Air-conditioning unit
Indoor unit
Room of refrigerant leak
(Refrigerant is fully leaked)
5. Measures against exceeding the critical concentration
a. To reduce the refrigerant concentration below the critical concentration, install a mechanical ventilation device
(for frequent ventilation).
b. If frequent ventilation cannot be performed, please install a leak warning device interlinked with the mechani-
cal ventilation device.
Fig. 6-2 Refrigerant Leak
Indoor unit
a. Opening of ventilation
b. Leak warning device interlinked with
the mechanical ventilation device
0A
(The leak warning device shall be installed in the gathering place of refrigerant.)
Fig. 6-3 Mechanical Ventilation Device
6.5 Hand over to the client
1. Hand over the Use Manual for the Indoor Unit and the Installation Manual for the Air-conditioning Unit to the
client.
2. Explain the contents of Use and Installation Manual to the client carefully.
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