Hitachi YUTAKI RWM-2R1E Installation & Operation Manual page 8

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Table of Contents

GENERAL INDEX

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

VIII

PMML0575 rev.2 - 03/2022

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