Hitachi YUTAKI RWM-2R1E - Page 8

GENERAL INDEX
PMML0575 rev.2 - 03/2022
VIII
4 ELECTRICAL DATA ....................................................................................................................24
4.1 Considerations ..................................................................................................................................................... 24
4.2 Split system - R410A Outdoor unit ....................................................................................................................... 25
4.3 Split system - R32 Outdoor unit ........................................................................................................................... 25
4.4 Split system - Indoor unit ...................................................................................................................................... 26
4.4.1 YUTAKI S ....................................................................................................................................................................... 26
4.4.2 YUTAKI S COMBI........................................................................................................................................................... 27
4.4.3 YUTAKI S80 ................................................................................................................................................................... 28
4.5 Monobloc system ................................................................................................................................................ 30
5 WORKING RANGE .....................................................................................................................31
5.1 Power supply working range ................................................................................................................................ 31
5.2 R410A Temperature working range ...................................................................................................................... 31
5.2.1 Space heating ................................................................................................................................................................ 31
5.2.2 DHW ............................................................................................................................................................................... 33
5.2.3 Swimming pool heating .................................................................................................................................................. 34
5.2.4 Space cooling (Necessary cooling kit) ........................................................................................................................... 34
5.3 R32 Temperature working range .......................................................................................................................... 35
5.3.1 Space heating ................................................................................................................................................................ 35
5.3.2 DHW ............................................................................................................................................................................... 36
5.3.3 Swimming pool heating .................................................................................................................................................. 36
5.3.4 Space cooling (Necessary cooling kit) ........................................................................................................................... 37
5.4 R410A Hydraulic working range ........................................................................................................................... 37
5.4.1 Hydraulic data ................................................................................................................................................................ 37
5.5 R32 Hydraulic working range ............................................................................................................................... 38
5.5.1 Hydraulic data ................................................................................................................................................................ 38
5.5.2 Pump performance curves ............................................................................................................................................. 39
6 REFRIGERANT AND WATER PIPING .......................................................................................46
6.1 General notes before performing piping work ...................................................................................................... 46
6.2 Piping connection for Outdoor Unit ...................................................................................................................... 46
6.2.1 Brazing work ................................................................................................................................................................... 49
6.2.2 Refrigerant charge .......................................................................................................................................................... 49
6.2.3 Drain Piping .................................................................................................................................................................... 49
6.3 R32 Refrigerant circuit.......................................................................................................................................... 51
6.3.1 General notes R32 refrigerant ........................................................................................................................................ 51
6.3.2 Refrigerant piping ........................................................................................................................................................... 51
6.3.3 Refrigerant charge .......................................................................................................................................................... 53