Hitachi UTOPIA R32 Series Installation And Operation Manual page 7

General Index
1. General information
1.1 General information ..........................................................................................2
1.2 Applied symbols.................................................................................................2
1.3 Additional information about safety .................................................................3
1.4 Important notice ................................................................................................4
1.5 Product guide ....................................................................................................5
1.5.1 Classification of the outdoor unit ............................................................5
1.5.2 Outdoor units product line-up ................................................................5
2. Name of parts and dimensional data
2.1 RAS-(2-3)HVRC3 .................................................................................................7
3. Refrigerant cycle
3.1 General notes ....................................................................................................9
3.2 RAS-(2/2.5)HVRC3 .............................................................................................9
3.3 RAS-3HVRC3 ....................................................................................................10
4. Additional considerations for the unit installation
4.1 Installations with exposure to strong winds ...................................................12
5. Refrigerant piping and refrigerant charge
5.1 Selection of the copper pipes .........................................................................14
5.2 Three principles on work with refrigerant pipes.............................................14
5.3 Flared pipes .....................................................................................................15
5.3.1 Selection of the connection with flare fitting .......................................15
5.3.2 Dimensions of flared pipe .....................................................................16
5.3.3 Flared connection mounting .................................................................16
5.4 General instructions on the installation of refrigerant pipes .........................17
5.4.1 Preparing copper refrigeration pipes ....................................................17
PMEN0654 rev.0 - 12/2023
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