Toshiba MMY-MUP0801HT8P-TR Service Manual page 118

<According to indoor unit horsepower for Hot Water Module (HWM)>
Indoor Unit Corrective amount
Capacity of refrigerant
HP kg
2.5
5
<According to indoor unit horsepower for Fresh Air Intake)>
Corrective amount of refrigerant: 0 kg
<According to indoor unit horsepower for High Efficiency 4-Way Cassette (MMU-UP∗∗∗∗H∗)>
Indoor Unit Corrective amount
Capacity of refrigerant
HP kg
1
0.2
1.25
1.7
2
0.6
2.5
3
3.2
4
5
6
Next, refer to the following table below, calculate the corrective amount of refrigerant according to system
diversity (D)
Corrective amount of refrigerant varies according to the system diversity (D)
Diversity D(%) Corrective amount
of refrigerant (kg)
50% ≤ D < 60%
60% ≤ D < 70%
70% ≤ D < 80%
80% ≤ D < 90%
90% ≤ D < 95%
95% ≤ D
Lastly, add the corrective amount of refrigerant according to system diversity (D), the corrective amount of
refrigerant according to indoor unit horsepower(C) and the additional amount of refrigerant by the pipe
diameter on liquid side and the pipe length (B) to the compensation amount of refrigerant according to total
outdoor unit horsepower (A)
This is the final additional amount of refrigerant.
If a minus sign is indicated as the result, the additional amount of refrigerant is zero (0) kg, do not reduce the
refrigerant.
Compensation amount of refrigerant according to total outdoor unit horsepower (A)
Additional amount of refrigerant by pipe length (B)
Corrective amount of refrigerant according to indoor unit horsepower (C
Corrective amount of refrigerant according to system diversity (D)
Total additional amount of refrigerant
Number of Corrective amount
connected indoor of refrigerant on each
units indoor unit horsepower
Number
Number of
connected indoor
units
Number
-2.5
-2.0
-1.5
-1.0
-0.5
0
kg
= kg
= kg
Corrective amount
of refrigerant on each
indoor unit horsepower
kg
= kg
= kg
= kg
= kg
= kg
= kg
= kg
= kg
= kg
= kg
- 118 -
kg
kg
kg
kg
kg