Hitachi RWM-(H)FSN3E User manual

Printed in SpainTCGB0070 rev.3 - 04/2012
HITACHI participates in the Eurovent Certification Programme; the
certified data of certified models are listed in the Eurovent Certification
Online Directory (www.eurovent-certification.com).
Hitachi air conditioning products are manufactured according to:
ISO 9001 of JQA, Japan for its Quality Management accordance with
the standard
ISO 14001 of JACO, Japan for its Environmental Management
accordance with the standard.
Hitachi Air Conditioning Products Europe, S.A. is certified with:
ISO 9001 of AENOR, Spain for its Quality Management accordance
with the standard
ISO 14001 of AENOR Spain for its Environmental Management
systems accordance with the standard.
Hitachi certifies that our products have met EU consumer safety,
health and environmental requirements.
Hitachi Air Conditioning Products Europe, S.A.
Ronda Shimizu, 1 - Políg. Ind. Can Torrella
08233 Vacarisses (Barcelona) España
Hitachi fulfills with the Certification NF-PAC that recognize the quality
requirements for these heat pumps systems.
RWM-(H)FSN3E Indoor units
RAS-H(V)RNME-AF Outdoor units
RAS-HVRN2 Outdoor unit
Technical Catalogue
YUTAKI S SERIES
TCGB0070 rev 3 - 04/2012
YUTAKI S SERIES
C
E
R
T
I
F
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E
D
B
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HEAT PUMP

Contents
TCGB0070 rev.3 - 04/2012
Contents
General information
Features and benets
General data
Capacities and Selection data
Acoustic characteristic curves
Working range
General dimensions
Refrigerant cycle
Piping work and refrigerant charge
Electrical wiring
Installation congurations
Optional functions
Troubleshooting
1
2
3
4
5
6
7
8
9
10
11
12
13

General Index
TCGB0070 rev.3 - 04/2012
V
General Index
1. General information ..................................................................................................... 11
1.1 General information ..................................................................................................................................12
1.1.1 General notes................................................................................................................................................ 12
1.1.2 Introduction.................................................................................................................................................... 12
1.1.3 Environment-friendly units............................................................................................................................. 13
1.2 Applied symbols........................................................................................................................................14
1.3 Product guide............................................................................................................................................15
1.3.1 Classication of indoor unit models............................................................................................................... 15
1.3.2 Classication of outdoor unit models............................................................................................................. 15
1.3.3 Classication of Domestic Hot Water Tank accessory .................................................................................. 15
1.3.4 Product guide: indoor unit ............................................................................................................................. 16
1.3.5 Product guide: outdoor unit ........................................................................................................................... 17
1.3.6 Accessory code list........................................................................................................................................ 17
2. Features and benefits .................................................................................................. 21
2.1 Selection benets .....................................................................................................................................22
2.1.1 Environment-friendly system ......................................................................................................................... 22
2.1.2 Expanded selection range............................................................................................................................. 23
2.1.3 Adaptability to the customer’s/system needs ................................................................................................ 24
2.2 Installation benets...................................................................................................................................25
2.2.1 Easy unit installation...................................................................................................................................... 25
2.2.2 Easy and exible electrical installation .......................................................................................................... 28
2.3 Start-up benets .......................................................................................................................................29
2.3.1 Start-up by pressing the Run/Stop button of LCD user’s interface ............................................................... 29
2.3.2 Floor screed drying (Circuits 1 & 2) (Optional function) ................................................................................ 29
2.3.3 Test run operation from LCD user’s interface................................................................................................ 29
2.4 Functionality benets................................................................................................................................30
2.4.1 High efciency system................................................................................................................................... 30
2.4.2 Wide capacity range...................................................................................................................................... 30
2.4.3 Expanded working range............................................................................................................................... 31
2.4.4 Advanced technology .................................................................................................................................... 32
2.5 Control features ........................................................................................................................................44
2.5.1 Flexible space heating/cooling conguration and control.............................................................................. 44
2.5.2 Flexible Domestic Hot Water (DHW) control ................................................................................................. 48
2.5.3 Swimming pool combination control ............................................................................................................. 50
2.5.4 Flexible water pumps control......................................................................................................................... 50
2.5.5 Other optional functions ................................................................................................................................ 50

General Index
TCGB0070 rev.3 - 04/2012
VI
2.6 Maintenance benets................................................................................................................................51
2.6.1 Complete operation display by LCD user’s interface .................................................................................... 51
2.6.2 Front access to the electrical box.................................................................................................................. 51
2.6.3 Electrical box turns on itself........................................................................................................................... 52
2.6.4 Shutdown valves ........................................................................................................................................... 52
2.6.5 Alarm hystorical data ..................................................................................................................................... 53
3. General data.................................................................................................................. 55
3.1 YUTAKI S system .....................................................................................................................................56
3.2 Indoor unit.................................................................................................................................................57
3.3 Outdoor unit..............................................................................................................................................59
3.3.1 RAS-(2-6)(HVRN2/HVRNME-AF) ................................................................................................................. 59
3.3.2 RAS-(4-10)HRNME-AF ................................................................................................................................. 60
3.4 Domestic Hot Water Tank .........................................................................................................................61
3.5 Component data .......................................................................................................................................62
3.5.1 Indoor unit ..................................................................................................................................................... 62
3.5.2 Outdoor unit................................................................................................................................................... 63
3.6 Electrical data ...........................................................................................................................................65
3.6.1 Considerations .............................................................................................................................................. 65
3.6.2 Indoor unit ..................................................................................................................................................... 65
3.6.3 Outdoor unit................................................................................................................................................... 65
3.6.4 Domestic Hot Water Tank.............................................................................................................................. 66
4. Capacity and selection data ........................................................................................ 67
4.1 System selection procedure .....................................................................................................................68
4.1.1 Selection parameters .................................................................................................................................... 68
4.1.2 Selection procedure ...................................................................................................................................... 68
4.2 Maximum capacity tables .........................................................................................................................77
4.2.1 Maximum heating capacity (kW) ................................................................................................................... 77
4.2.2 Maximum cooling capacity (kW) ................................................................................................................... 79
4.3 Heating nominal points of interest ............................................................................................................80
4.4 Correction factors .....................................................................................................................................81
4.4.1 Defrost correction factor ............................................................................................................................... 81
4.4.2 Piping length correction factor....................................................................................................................... 81

General Index
TCGB0070 rev.3 - 04/2012
VII
5. Acoustic characteristic curves ................................................................................... 85
5.1 Overall sound level ...................................................................................................................................86
5.1.1 Outdoor unit................................................................................................................................................... 87
5.1.2 Indoor unit ..................................................................................................................................................... 89
6. Working range .............................................................................................................. 91
6.1 Temperature range ................................................................................................................................... 92
6.1.1 Heating mode ................................................................................................................................................ 92
6.1.2 Cooling mode ................................................................................................................................................ 93
7. General dimensions ..................................................................................................... 95
7.1 Dimensions...............................................................................................................................................96
7.1.1 Indoor unit ..................................................................................................................................................... 96
7.1.2 Outdoor unit................................................................................................................................................... 98
7.1.3 Domestic Hot Water Tank............................................................................................................................ 102
7.2 Service space .........................................................................................................................................104
7.2.1 Indoor unit ................................................................................................................................................... 104
7.2.2 Outdoor unit................................................................................................................................................. 104
8. Refrigerant cycle ........................................................................................................ 105
8.1 RAS-2HVRN2 + RWM-2.0(H)FSN3E combination.................................................................................106
8.2 RAS-3HVRNME-AF + RWM-3.0(H)FSN3E combination .......................................................................107
8.3 RAS-(4-6)H(V)RNME-AF + RWM-(4.0-6.0)(H)FSN3E combination....................................................... 108
8.4 RAS-(8/10)HRNME-AF + RWM-(8.0/10.0)(H)FSN3E combination ........................................................ 109
9. Piping work and refrigerant charge.......................................................................... 111
9.1 Refrigerant piping ................................................................................................................................... 112
9.1.1 Refrigerant piping length ..............................................................................................................................112
9.1.2 Refrigerant piping size..................................................................................................................................112
9.2 Copper pipes, measurements and connection ....................................................................................... 113
9.2.1 Copper pipes and measurements ................................................................................................................113
9.2.2 Pipe connection............................................................................................................................................114
9.3 Refrigerant charge amount..................................................................................................................... 114
9.4 Precautions in the event of gas refrigerant leaks.................................................................................... 115
9.4.1 Maximum permitted concentration of HFCs .................................................................................................115
9.4.2 Calculation of refrigerant concentration........................................................................................................115
9.4.3 Countermeasure in the event of refrigerant leakage ....................................................................................116

General Index
TCGB0070 rev.3 - 04/2012
VIII
9.5 Refrigerant pipe work.............................................................................................................................. 117
9.5.1 General notes before performing pipe work .................................................................................................117
9.5.2 Suspension of refrigerant and water pipes...................................................................................................117
9.5.3 Pipe work and connection ............................................................................................................................118
9.5.4 Brazing work considerations ....................................................................................................................... 120
9.5.5 Refrigerant piping work considerations ....................................................................................................... 120
9.6 Water pipe work and connection ............................................................................................................120
9.6.1 General notes.............................................................................................................................................. 120
9.6.2 Water piping connection.............................................................................................................................. 121
9.6.3 Draining pipe work....................................................................................................................................... 122
9.6.4 Circuit water lling-in ................................................................................................................................... 122
9.6.5 Water ow adjustment................................................................................................................................. 122
9.7 Pressure charts.......................................................................................................................................124
9.8 DHWT - Domestic Hot Water tank .......................................................................................................... 126
9.8.1 Hydraulic circuit ........................................................................................................................................... 126
9.8.2 Pressure drop.............................................................................................................................................. 127
9.8.3 General standard for hydraulic installation .................................................................................................. 127
10. Electrical wiring........................................................................................................ 129
10.1 Power supply ........................................................................................................................................130
10.1.1 General check ........................................................................................................................................... 130
10.1.2 Electrical connection of outdoor unit ......................................................................................................... 131
10.1.3 Electrical connection of outdoor unit ......................................................................................................... 133
10.2 Setting of DIP switches and RSW switches..........................................................................................135
10.2.1 Outdoor unit............................................................................................................................................... 135
10.2.2 Indoor unit ................................................................................................................................................. 138
10.3 Common wiring.....................................................................................................................................143
10.3.1 Electrical wiring between outdoor and indoor unit..................................................................................... 143
10.3.2 Wire sizes.................................................................................................................................................. 144
10.4 Domestic Hot Water Tank .....................................................................................................................145
10.4.1 Electrical wiring connection ....................................................................................................................... 145
10.4.2 Wire size.................................................................................................................................................... 145
11. Installation configuration......................................................................................... 147
11.1 Heating system congurations.............................................................................................................. 148
11.1.1 System conguration ................................................................................................................................. 148
11.1.2 Typical installation samples ....................................................................................................................... 149
11.2 Cooling system congurations ..............................................................................................................154

General Index
TCGB0070 rev.3 - 04/2012
IX
11.3 Additional combinations ........................................................................................................................157
11.3.1 Swimming pool .......................................................................................................................................... 157
11.3.2 Solar panel ................................................................................................................................................ 157
12. Optional functions.................................................................................................... 159
12.1 Optional functions of the indoor unit .....................................................................................................160
13. Troubleshooting ....................................................................................................... 161
13.1 On screen during abnormal operation .................................................................................................. 162
13.2 Alarm codes.......................................................................................................................................... 162