Hitachi UTOPIA R32 Series - 6.1 RAS-(2-3)HVRC3; 6.1.1 Refrigerant Piping Length; 6.1.2 Piping System for Header Branch

28
PMEN0654 rev.0 - 12/2023
6
RAS-(2-3)HVRC3
REFRIGERANT PIPING LENGTH
6.1 RAS-(2-3)HVRC3
6.1.1 Refrigerant piping length
The refrigerant piping between the indoor unit and the 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
dierence according to piping length.
RAS-(2-3)HVRC3
DSW302
Height dierence (m)
Total length between outdoor unit and each indoor unit
Seng
before
shipment
When outdoor unit
is installed higher
than indoor unit
When outdoor unit
is installed lower
than indoor unit
6.1.2 Piping system for header branch
1 indoor unit system (2, 2.5 or 3 HP outdoor unit) 2 indoor units system (3 HP outdoor unit)
(Pictures are as example)