Refrigerant Piping Size And Multi-Kit/Distributor - Hitachi UTOPIA R32 Series Installation And Operation Manual

6.1.4 Refrigerant piping size and Multi-Kit/distributor
Select the piping connection sizes according to the following procedures
• Between outdoor unit and branch pipe: Select the same pipe connection size as the pipe size of
the outdoor unit.
• Between branch pipe and indoor unit: Select the same pipe connection size as the pipe size of
the indoor unit.
1 indoor unit system
2 indoor units system
Outdoor Unit HP
3
PMEN0654 rev.0 - 12/2023
Outdoor Unit HP
2 / 2.5 Ø12.70
3 Ø15.88
Pipe Size (A)
Gas (mm)
Ø15.88
Pipe Size (L)
Gas Liquid
Ø6.35
Ø9.52
Liquid (mm)
Ø9.52
Branch pipe
E-102SN4
6
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