6.Trial running
21
A[kg]
B[m
³
]
≤
critical concentration: 0.3[kg/m
³
]
Outdoor unit
Indoor unit
Room of refrigerant leakage
All refrigerant leaked
Fig. 6.2
5) Measures against exceeding the critical concentration
a) To control the refrigerant concentration below the critical concentration, a mechanical air
ventilating device shall be installed (for frequent air ventilating).
b) If frequent air ventilating cannot be realized, please install a leakage warning and detecting
apparatus interlinked with the mechanical air ventilating device.
b.L
eak detection alarm device connect to mechanical ventilation
0A
a.Ventilation port position
(the leakage warning and detecting apparatus shall be installed in a place with dense refrigerant accumulation)
Fig. 6.3
Indoor unit
V.1
