3.3.2 Refrigerant piping length
The refrigerant piping between the indoor unit and the outdoor unit should be designed using the following table.
• Piping length specification:
Unit
Maximum piping length between Outdoor and each
indoor unit (L)
Actual/Equivalent
Maximum Height difference.
Outdoor unit is higher than indoor unit
Indoor unit is higher than Outdoor unit (H)
RAS-3HVRNME 50/70
30/20
RAS-4H(V)RNM1E 70/90
RAS-5H(V)RNM1E
75/95
RAS-6H(V)RNM1E
The possible combination between Outdoor Unit and Indoor Unit are the following:
Single System
Twin System Triple System
— L = A + Longest of B & C L = A+ Longest of B, C & D
3 Piping work and
refrigerant charge
65
SMGB0060 rev. 1- 12/2010
3
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