Hitachi RAS-3HVRNS - Refrigerant Piping Length

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 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-2HVRN1E
50
30/20
RAS-2.5HVRN1
RAS-3HVRNS 30
RAS-4HVRNS1E
50
RAS-5HVRNS1E
RAS-6HVRNS1E
RAS-8HRNSE
50/70
RAS-10HRNSE
3 Piping work and
refrigerant charge
75
SMGB0060 rev. 1- 12/2010
3