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25
20
15
10
5
0
1.0
[m
] (kg)
max
Calculating example
Conditions
Calculation
U-100PZ3E5, U-100PZ3E8, U-125PZ3E5, U-125PZ3E8, U-140PZ3E5, U-140PZ3E8
[m
]
c
[m
]
max
2.40 ≤ [m
c
[m
] > [m
c
max
140.0
120.0
100.0
80.0
60.0
40.0
20.0
0.0
2
[m
] (kg)
max
AHU Kit – Installation Instructions – 07/2023
Line 3
1.2
1.4
1.6
1.22
1.49
[m
]: refrigerant charge (kg) of the outdoor unit
c
Standard
U-36PZ3E5
U-50PZ3E5
0.95
1.33
Outdoor unit: U-71PZ3E5A
Total pipe length: 40 m
Max. charge-less pipe length: 30 m
[m
] = [1] + [2] = [1] + ([3] * ([4] – [5]))
c
[m
] = 1.32 kg + (0.017 kg * (40 m – 30 m))
c
[m
] = 1.49 kg
c
Refrigerant charge amount, specified in kilogrammes (kg)
Maximum refrigerant charge amount, specified in kilogrammes (kg)
] ≤ [m
]
Installation possible above the "Density Limit Line" for the relevant indoor/outdoor unit combina-
max
tion (see diagrams and tables below)
]
Cannot be installed
2.5
3
2.40
[m
]: refrigerant charge (kg) of the outdoor unit
c
Standard
U-100PZ3E5
U-125PZ3E5
U-100PZ3E8
U-125PZ3E8
3.30
3.70
General information and safety notes
5
4
3
2
1
0
1.0
1.8
2.0
[m
U-60PZ3E5A
1.30
15.0
14.0
Line 3
13.0
12.0
11.0
10.0
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
3.5
4
0.0
2
3.70
[m
U-140PZ3E5
U-140PZ3E8
Line 2
Line 1
1.2
1.4
1.6
1.8
1.22
1.49
]: refrigerant charge (kg) of the outdoor unit
c
U-71PZ3E5A
1.49
Refrigerant charged at shipment: 1.32 kg
Refrigerant charge in the field: 0,017 kg/m
2.5
3
3.5
2.40
3.70
]: refrigerant charge (kg) of the outdoor unit
c
1
2.0
Line 2
Line 1
4
15
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