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Maximum Additional Refrigerant Charge
Total additional charge must not exceed the maximum additional refrigerant charge indicated in the following table.
Accordingly, allowable total piping length may become shorter than maximum value due to the limitation of maximum
additional refrigerant amount.
Capacity (kBtu/h)
76
Max. Additional
Refrigerant Charge
28.5
(kg)
Outdoor Unit
(kBtu/h)
(FKFSHA)
76
96
114
136
154
170
190
212
NOTE:
W0 is outdoor unit ref. charge before shipment.
●
●
In case of the combination of the base unit, calculate the total ref.
charge before shipment of the outdoor units to be combined.
Charging Work
2.
Charge refrigerant (R410A) into the system according to Item 6.3. in
INSTALLATION chapter.
Record of Additional Charge
3.
Total refrigerant charge of this system is calculated in the following formula.
Total Ref. Charge = W
=
This System
Total Additional Charge
Total Ref. Charge:
/
Date of Ref.
Charge Work:
96
114 136~154 170~228 250~272 290~340 360~424 444~530 550~648 664~804 826~848
30.5
31.5
34.5
41.0
W 0 Outdoor Unit
Ref. Charge (Kg)
6. 0
6. 0
8. 8
9. 2
9. 8
10. 6
11. 5
11. 5
+
Wo
kg
+
=
:
W
kg
kg
/
44.5
51.0
57.5
Ref. Charge of O.U. Before Shipment (W0) kg
30
65.5
74.5
85.5
100.0
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