Hitachi RAS-(4-12)HRNM(2)(E) - Refrigerant Piping Length

3 Piping work and
refrigerant charge
75
SMGB0064 rev.0 - 08/2011
3
3.4.2 Refrigerant piping length
The refrigerant piping between the indoor unit and the outdoor unit should be designed using the following table.
• Piping length specication:
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-2HVRN2
50
30/20
RAS-2.5HVRN2
RAS-3HVRNS2 30
RAS-4H(V)RNS2E
50RAS-5H(V)RNS2E
RAS-6H(V)RNS2E
RAS-8HRNSE
50/70
RAS-10HRNSE