Hitachi YUTAKI RWM-2R1E

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ENGLISH

TYPE 1 (5 screws)

TYPE 2 (6 screws)

4 Remove the indoor unit lateral cover.

MAINTENANCE

PMML0575 rev.2 - 03/2022

333

Main Page

Table of Contents7
General Information15
General Notes15
Introduction15
Overview of YUTAKI System15
Summary of Operations16
Applied Symbols18
Product Guide19
Classification of the Units19
Split System - Outdoor Unit19
Split System - Indoor Unit19
Monobloc System20
Complementary System21
Product List21
Split System - R32 Outdoor Unit21
Split System - R410A Outdoor Unit21
Split System - Indoor Unit22
Monobloc System25
Complementary System26
General Safety Notes27
Additional Information about Safety27
Important Notice27
Name of Parts and Dimensional Data28
Ras-2Whvrp1 / Ras-2.5Whvrp1 / Ras-3Whvrp128
Ras-(4-10)Wh(V)Npe29
Rwm-(2.0-3.0)R1E30
Rwm-(4.0-6.0)N1E31
Rwm-(8.0/10.0)N1E32
Rwd-(2.0-6.0)(N/R)W1E-220S(-K)33
Rwh-(4.0-6.0)(V)Nfe34
Rwh-(4.0-6.0)(V)Nfwe35
Rasm-(2/3)Vre36
Rasm-(4-6)(V)Re37
Electrical Data38
Considerations38
Split System - R410A Outdoor Unit39
Split System - R32 Outdoor Unit39
Split System - Indoor Unit40
Yutaki S40
Yutaki S Combi41
Yutaki S8042
Monobloc System44
Working Range45
Power Supply Working Range45
R410A Temperature Working Range45
Space Heating45
Dhw47
Swimming Pool Heating48
Space Cooling (Necessary Cooling Kit)48
R32 Temperature Working Range49
Space Heating49
Dhw50
Swimming Pool Heating50
Space Cooling (Necessary Cooling Kit)51
R410A Hydraulic Working Range51
Hydraulic Data51
R32 Hydraulic Working Range52
Hydraulic Data52
Pump Performance Curves53
Refrigerant and Water Piping60
General Notes before Performing Piping Work60
Piping Connection for Outdoor Unit60
Brazing Work63
Refrigerant Charge63
Drain Piping63
R32 Refrigerant Circuit65
General Notes R32 Refrigerant65
Refrigerant Piping65
Refrigerant Charge67
R410A Refrigerant Circuit67
Refrigerant Piping67
Precautions in the Event of Gas Refrigerant Leaks68
Water Piping70
Water Piping Length70
Water Piping Size70
Water Quality73
Requirements and Recommendations for the Hydraulic Circuit75
Water Flow Control75
Water Piping Connection for YUTAKI M76
Piping Location and Connection Size76
Suspension of Water Piping76
Space Heating and DHW77
Yutaki S and Yutaki M77
Yutaki S Combi80
Yutaki S8083
Electrical and Control Settings86
General Check86
Electrical Connection90
Wiring Size90
Minimum Requirements of the Protection Devices94
Setting of DIP Switches and RSW Switches98
Outdoor Unit RAS-(2-3)WHVRP1, RAS-(4-10)WH(V)NPE and RASM-(2-6)(V)(N/R)E98
Indoor Units RWM-(2.0-10.0)(R/N)1E / RWD-(2.0-6.0)(R/N)W1E-220S(-K) and RWH-(4.0-6.0)(V)NF(W)E102
Yutaki Cascade Controller Atw-Ycc-(01-03)107
Location of DIP Switches and Rotary Switches107
Terminal Board Connections112
Unit Controller (Pc-Arfh1E)139
Definition of the Switches139
Description of the Icons140
Common Icons140
Icons for the Comprehensive View141
Icons for the Room Thermostat View142
Room Thermostat Contents143
Unit Controller Contents144
Unit + Room Thermostat Controller Contents146
Controller Configuration148
Configuration Assistant148
Advanced Configuration152
Examples of Possible Configurations154
Main Screen160
Room Thermostat View160
Comprehensive View161
Quick Action Function162
Menu163
Operation Information163
System Configuration164
General Options Configuration165
Timer and Schedule Configuration166
Water Settings Configuration168
Space Heating / Space Cooling Configuration169
Domestic Hot Water (DHW) Configuration171
Swimming Pool Configuration173
Complementary Heating Configuration174
Heat Pump Configuration176
Optional Functions Configuration178
Inputs, Outputs and Sensors Configuration181
Commissioning182
Controller Settings183
About183
Factory Reset184
Return to User Mode184
Unit Controller (Pc-Arfh2E)185
Definition of the Switches185
Description of the Icons186
Unit Controller Contents188
Controller Configuration191
Timer Assitant for Room Thermostat195
Examples of Possible Configurations196
Main VIEW202
Quick Actions Function203
Home View205
Next Schedule Indication205
Mode View206
Room 1/2 View206
Fan Coils 1/2 View207
Circuit 1/2 View207
DHW View208
SWP View208
Menu209
Operation Information209
Live View211
Energy Data215
Timer and Schedule Configuration217
System Configuration223
Room Thermostats Configuration224
Water Settings Configuration225
Space Heating / Space Cooling Configuration226
Hot Water Tank Configuration228
Swimming Pool Configuration230
Complementary Heating Configuration231
Heat Pump Configuration233
Fan Coils235
Optional Functions Configuration236
Inputs, Outputs and Sensors Configuration240
Holiday Mode242
Controller Settings243
Commissioning244
About244
Factory Reset245
Installer Access245
Return to User Mode246
Lock the Controller246
Yutaki Cascade Controller Atw-Ycc-(01-02)247
Definition of the Switches247
Description of the Icons248
Common Icons248
Icons for the Comprehensive View249
Contents250
CASCADE CONTROLLER Configuration252
Configuration Assistant252
Advanced Configuration255
Main Screen258
Quick Action Function259
Menu260
Operation Information260
System Configuration261
General Options Configuration262
Timer and Schedule Configuration263
Space Heating / Space Cooling Configuration266
Domestic Hot Water (DHW) Configuration268
Swimming Pool Configuration270
Complementary Heating Configuration271
Heat Pump Configuration273
Optional Functions Configuration274
Setup of Inputs, Outputs and Sensors276
Controller Settings277
Commissioning278
About278
Factory Reset279
Return to User Mode279
Yutaki Cascade Controller Atw-Ycc-03280
Definition of the Switches280
Description of the Icons281
Cascade Controller Contents283
CASCADE Controller Configuration286
Main View289
Quick Actions Function290
Home View292
Next Schedule Indication292
Mode View293
Room 1/2 View293
Fan Coils 1/2 View294
Circuit 1/2 View294
DHW View295
SWP View295
Menu296
Operation Information296
Timer and Schedule Configuration297
System Configuration304
Room Thermostats Configuration305
Water Settings Configuration306
Cascade Configuration307
Space Heating / Space Cooling Configuration308
Hot Water Tank Configuration310
Swimming Pool Configuration312
Complementary Heating Configuration313
Heat Pump Configuration315
Fan Coils316
Optional Functions Configuration317
Inputs, Outputs and Sensors Configuration321
Holiday Mode323
Controller Settings324
Commissioning325
About325
Factory Reset326
Installer Access326
Return to User Mode327
Lock the Controller327
Troubleshooting328
Alarm Code Indication on Remote Control Switch (PC-ARFH1E)328
Alarms for Indoor Units328
Alarms for YUTAKI CASCADE CONTROLLER ATW-YCC-(01/02)331
Alarms for Outdoor Units331
Alarms for LCD332
Alarm Code Indication on Remote Control Switch (PC-ARFH2E)333
Alarms for Indoor Units333
Alarms for YUTAKI CASCADE CONTROLLER ATW-YCC-03335
Alarms for Outdoor Units336
Alarms for LCD337
Maintenance338
Removing the Covers338
Yutaki S338
Yutaki S Combi342
Test and Check345
Yutaki S80345
Space Heating Pipes Connection349
Drain Pipes Connection349
Test and Check350
Maintenance Work350
General Maintenance Procedure for the Outdoor Unit350
General Maintenance Procedure for the Indoor Unit351
Commissioning358
Before Operation358
Preliminary Check358
Checking the Unit358
Electrical Checking358
Hydraulic Circuit Checking (Space Heating and DHW)358
Commissioning Procedure359
Test Run / Air Purge360

Hitachi YUTAKI RWM-2R1E - Page 347

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