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REFRIGERANT AND WATER PIPING
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
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.
Height difference (m)
When outdoor unit is
installed higher than
indoor unit
When outdoor unit is
installed lower than
indoor unit
Maximum piping length between outdoor unit and
indoor unit (Lmax)
Minimum piping length between outdoor unit and
indoor unit (Lmin)
Maximum height difference between indoor and
outdoor unit (H)
?
N O T E
(*): If the actual piping length between outdoor and indoor unit needs to be less than 5m, contact with your dealer.
23
PMML0575 rev.1 - 09/2021
Outdoor unit model
RAS-2WHVRP1
RAS-2.5WHVRP1
RAS-3WHVRP1
Total length between outdoor unit and indoor unit.
Actual piping length (L)
Equivalent piping length (X)
Actual piping length
Outdoor unit higher than indoor unit
Indoor unit higher than outdoor unit
(kg))
0
W
(kg)
0
1.2
1.3
1.3
+H
OU Model
4-6 HP
75 m
95 m
5 m (*)
30 m
20 m
8/10 HP
70 m
90 m
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