Hitachi FSXN Series Service Manual page 355

12 Maintenance notes
Model
RAS-26FSXN
RAS-28FSXN
RAS-30FSXN
4 Special attention should be given to areas where the refrigerant may be deposited and stay in the room, such as
basements or similar, as it is heavier than air.
Example:
A: Refrigerant charge: 60 kg.
B: Refrigerant piping.
C: Outdoor unit.
D: Indoor unit.
E: Mechanical ventilation equipment.
F: Gas leak detector.
G: The smallest opening room.
H: Small room.
I: Medium-sized room.
J: Large room.
K: Opening.
N O T E
1 The gas leakage quantity for each room (large, medium-sized, small and the smallest) should be calculated as
60 kg.
2 The gas concentration of each room should not exceed the limit value, 0.44 kg/m
353
SMGB0065 rev. 1 - 12/2010
Ton
10.19 RAS-50FSXN
12.16 RAS-52FSXN
12.16 RAS-54FSXN
K
F
Model
A
G
H I
E
3
.
Ton
19.10
19.10
19.53
B
C
D
J
12