Hitachi RASC-4HNPE Service Manual page 63

3 Piping work and refrigerant charge
Caution in case of refrigerant leakage
- General example of application
System A
Refrigerant: 12 kg
Floor Floor
10 m 8 m
2
Gas leak detector
Fan: 2 m /min
3
Room R (kg)
A 12
B 12
C 12
B + C 12
D 18
E 6
53 SMGB0091 rev.2 - 11/2015
System A
RASC unit
Floor
8 m
2 2
Opening: 0.06 m
V (m ) C (kg/m
3
25 0.48
20 0.60
20 0.60
40 0.30
100 0.18
50 0.12
System B
RASC unit
System B
Refrigerant: 6 kg
Floor
40 m
2
2
) Countermeasure
3
2 m /min fan linked with gas leak detector
3
0.06 m
0.06 m
Height
2.5 m
Floor
20 m
2
aprox. opening
2
aprox. opening
2
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-
-
3