ENGLISH
5.1.3 Refrigerant charge
5.1.3.1 Refrigerant charge amount
The R32 refrigerant is factory charged in the outdoor unit with a refrigerant charge amount for 10 m of piping length between outdoor
and indoor unit.
5.1.3.2 Refrigerant charge before shipment (W
0
(kg))
Outdoor unit model
W
0
(kg)
RAS-2WHVRP1
1.2
RAS-2.5WHVRP1
1.3
RAS-3WHVRP1
1.3
5.2 R410A REFRIGERANT CIRCUIT
5.2.1 Refrigerant piping
Refrigerant piping length between indoor unit and outdoor unit
The refrigerant piping length between indoor unit and outdoor unit should be designed using the following chart. Keep the design
point within the area of the chart, which is showing the applicable height difference according to piping length.
When outdoor unit is
installed higher than
indoor unit
When outdoor unit is
installed lower than
indoor unit
Height difference (m)
Total length between outdoor unit and indoor unit.
+H
OU Model
4-6 HP
8/10 HP
Maximum piping length between outdoor unit and
indoor unit (Lmax)
Actual piping length (L)
75 m
70 m
Equivalent piping length (X)
95 m
90 m
Minimum piping length between outdoor unit and
indoor unit (Lmin)
Actual piping length
5 m (*)
Maximum height difference between indoor and
outdoor unit (H)
Outdoor unit higher than indoor unit
30 m
Indoor unit higher than outdoor unit
20 m
?
N O T E
(*): If the actual piping length between outdoor and indoor unit needs to be less than 5m, contact with your dealer.
REFRIGERANT AND WATER PIPING
PMML0575 rev.1 - 09/2021
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