Refrigerant Piping - Hitachi YUTAKI S COMBI Series Installation And Operation Manual

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Table of Contents

5.1 General notes before performing piping work ...............................................20

5.2 R32 Refrigerant circuit .....................................................................................20

5.2.1 General notes R32 refrigerant ...............................................................20

5.2.2 Refrigerant piping ..................................................................................21

5.2.3 Refrigerant charge .................................................................................23

5.2.3.1 Refrigerant charge amount ......................................................23

5.3 Water piping ....................................................................................................23

5.3.1 Water piping size ...................................................................................23

(DHW) circuit..........................................................................................24

5.3.2.1 Water filling ..............................................................................25

5.3.4 Water flow control .................................................................................29

5.4 Space heating and DHW ..................................................................................29

PMEN0645 rev.0 - 04/2023

(only for UK market) ........................................................... ......32

(kg)) .........................23

Table of Contents

Table of Contents