Panasonic PAW-160MAH3M, Руководство по установке

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11
AHU Kit – Installation Instructions – 07/2023
General information and safety notes
1
While there are no floor area limitations for refrigerant charges of less than 1.23 kg, the minimum
floor area [A
min
] for larger refrigerant charge amounts can be calculated by the following formula:
0.0 50.0 100.0 150.0 200.0 250.0
Floor area (m
2
)
ceiling-mounted
wall-mounted
floor-mounted
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
Allowed R32 refrigerant charge (kg)
A
min
=
[
m
c
]
2
2.5 x LFL
5/4
x h
0
A
min
= minimum floor area (m
2
)
m
c
= refrigerant charge (kg)
h
0
= height factor (mounting position):
– 0.6 for floor-mounted
– 1.8 for wall-mounted
– 1.0 for window-mounted
– 2.2 for ceiling mounted
LFL= R32 Lower Flammability Limit
(0.307 kg/m
3
)
Note
The refrigerant charge amount ([m
c
]) must be calculated by the following formula:
[m
c
] = [1] + [2] = [1] + ([3] * ([4] – [5]))
where:
[1]: refrigerant charged at shipment
[2]: refrigerant charge amount in the field
1
[3]: additional charge per 1 m
[4]: total pipe length
[5]: max. charge-less pipe length
1) If the total pipe length is within the maximum value of the charge-less pipe length, refrigerant charge in the field is unnecessary.
Calculating examples
Using the above formula, it is possible to calculate
a) the minimum floor area for a given refrigerant charge, or
b) the maximum refrigerant charge allowed for a given floor area.
Example:
S-60 U-71PZH3E5
6.8 kW, 7 m piping length
1.95 kg refrigerant charge
a) A given refrigerant charge amount of 1.95 kg
requires a minimum floor area of 2.41 m2.
b) For a given floor area of 10 m
2
the maximum
refrigerant charge amount is 3.97 kg.
Refrigerant charge:
1.95 kg
2.5 m
10,0 m
2
2.2 m