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General information and safety notes
U-71PZH3E5, U-71PZH3E8, U-100PZH3E5, U-100PZH3E8, U-125PZH3E5, U-125PZH3E8,
U-140PZH3E5, U-140PZH3E8
Installation height of indoor unit (h
h
0
1.8 m ≤ h
h
0
1
[m
[m
1.950 < [m
[m
[m
1.3.2 Preventing leakages
18
≥ 2.2 m
< 2.2 m
0
< 1.8 m
]
Refrigerant charge amount, specified in kilogrammes (kg)
c
]
Maximum refrigerant charge amount, specified in kilogrammes (kg)
max
] ≤ [m
]
Installation possible above the "Density Limit Line" for the relevant indoor/outdoor unit combina-
c
max
tion (see diagrams and tables below)
] > [m
]
Can not be installed
c
max
350
300
250
200
150
100
50
0.0
2.0
2.5
3.0
3.5
4.0
1.950
[m
]: refrigerant charge (kg) of the outdoor unit
c
Elite
U-71PZH3E5
U-71PZH3E8
] (kg)
2.850
max
● Do not let air enter the refrigeration cycle, because this will increase the risk of
explosion and injury due to high pressure inside the refrigerant cycle.
● Keep all tubing runs as short as possible.
● Use the flare method for connecting tubing and apply refrigerant lubricant to the
matching surfaces of the flare and union tubes before connecting them, then tighten
the nut with a torque wrench for a leak-free connection.
● Do not leak refrigerant while working on the refrigerant tubes during installation,
maintenance or repair.
● Check carefully for leaks (see → 1.3.3 Detecting leaks, p. 19) before starting the
test run.
)
Indoor unit type
0
AHU unit (horizontal installation)
AHU unit (horizontal installation)
AHU unit (vertical installation)
35
Line 3
30
25
20
15
10
5
0
4.5
5.0
5.5
6.0 6.5
5.975
U-100PZH3E5
U-125PZH3E5
U-100PZH3E8
U-125PZH3E8
5.975
2.0
2.5
3.0
3.5
4.0
4.5
1.950
[m
]: refrigerant charge (kg) of the outdoor unit
c
U-140PZH3E5
U-140PZH3E8
AHU Kit – Installation Instructions – 11/2021
Density limit
line
Line 1
Line 2
Line 3
Line 2
Line 1
5.0
5.5
6.0 6.5
5.975
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