Mitsubishi Heavy Industries SRK25GZ-L1 Handbook page 646

FDU-C
(b) Only case of ISO-T3 and SASO models.
Table of bypass factor
Item
Upper limit
Air flow Standard
Lower limit
644
Indoor air W.B. temperature (˚CW.B.)
Model
FDU308 type
0.019/0.096
0.067/0.086
0.043/0.057
ISO-T1 Standard condition
FDU408 type FDU508 type
0.048/0.05 0.103/0.106
0.032/0.043 0.076/0.094
0.017/0.025 0.051/0.064
(50/60 Hz)