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UTOPIA RAS-4 Series
Hitachi UTOPIA RAS-4 Series Technical Catalogue
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–
TECHNICAL
CATALOGUE
–
UTOPIA
R32 SERIES
R410A SERIES
TC
G
B
0136 rev.
1
- 0
5
/2021
MODELS
RAS-(4-6)H(V)RC2E - RAS-(4-6)H(V)RP2E
RAS-(4-6)H(V)NC2E - RAS-(4-6)H(V)NP2E
RAS-3HVRC2
2
Table of Contents
Default Chapter
5
Table of Contents
5
1 General Information
9
General Information
10
Introduction
10
Applied Symbols
11
Norms and Regulations
11
Product Guide
12
Classification of Outdoor Unit Models
12
Classification of Indoor Unit Models
12
Product Line-Up: Outdoor Units
13
Outdoor Unit Accessory Code List
14
Product Line-Up: Indoor Units
15
Product Line-Up: KPI Energy Recovery Unit
19
Product Line-Up: DX-Interface
19
Product Line-Up: Econofresh
19
Multi-Kits
20
Individual Remote Controls
20
Receiver Kit for Combination with Wireless Remote Control Switch
21
Centralised Remote Controls
22
Building Air Conditioning Controls
22
Gateways for Building Management Systems (BMS)
23
Control Support Devices
24
Control Accessories
24
2 Features and Benefits
25
Features and Benefits
26
Improvements of UTOPIA Prime / UTOPIA IVX Prime Series
26
R32 Refrigerant
26
Eco-Desing and Seasonal Efficiency
27
Eco-Design
27
Seasonal Efficiency
27
Energy Classes and Energy Label (Lot 10)
28
General Features and Benefits of the UTOPIA Prime / UTOPIA IVX Prime Series
30
Main Features
30
Selection Benefits
32
Wide Range of UTOPIA Outdoor Units
32
Wide Range of Indoor Units Combinable with UTOPIA Prime and UTOPIA IVX Prime
33
Installation Benefits
34
Start-Up Benefits
35
Automatic Start-Up Test
35
Service Verification
36
Maintenance Benefits
37
Availability of Maintenance Tools
37
Simple Maintenance
37
3 General Data
39
General Information
40
General Specifications
41
Cooling and Heating Performance
49
UTOPIA Prime Single Phase Series
49
UTOPIA IVX Prime Single Phase Series
49
UTOPIA Prime Three Phase Series
50
UTOPIA IVX Prime Three Phase Series
50
Component Data
51
Electrical Data
53
UTOPIA Series
54
4 Capacities and Selection Data
55
Combinability Range
56
Connected Number of Indoor Units
56
Connected Capacity Ratio
57
System Selection Procedure
58
Selection Procedure (Step 1)
58
Selection Procedure (Step 2)
60
Maximum Cooling Capacity
61
Maximum Heating Capacity
63
Correction Indoor Fan Speed Factor
65
Cooling
65
Heating
65
Piping Length Correction Factor
65
Lc Lh
65
Defrost Operation Correction Factor (F )
67
Correction Ratio Due to Humidity (CR)
67
Correction Factor According to Altitude
67
5 Acoustic Characteristic Curves
69
Overall Sound Level
70
Sound Pressure Curves
71
Sound Power Curves
73
6 Working Range
75
Working Range
76
Power Supply
76
Temperature Working Range
76
Special DSW Configuration for Low Ambient Temperature (-15ºC) - Only for Simultaneous Operation Mode Units (UTOPIA Prime)
77
7 General Dimensions
79
Dimensions
80
Ras-3Hvrc2
80
Ras-(4-6)H(V)(R/N)(C/P)2E
81
Service Space
82
Basic Sizes
82
Ras-3Hvrc2
83
Ras-(4-6)H(V)(R/N)(C/P)2E
85
8 Refrigerant Cycle
87
General Notes
88
Ras-3Hvrc2
88
Ras-(4-6)H(V)(R/N)(C/P)2E
89
9 Piping Work and Refrigerant Charge
91
Refrigerant Pipe Selection
92
Pipe Size Selection
92
Multikit or Distributor Selection
92
Refrigerant Piping Range
92
Refrigerant Piping Length
92
Piping System for Header Branch
93
Maximum Lenght of Refrigerant Piping
94
Combinations of Piping Size and Piping Length
96
Refrigerant Piping Size and Multikit/Distributor
96
Copper Pipes, Sizes and Connection
98
Copper Pipes and Sizes
98
Insulation
99
Refrigerant Charge Amount
100
Refrigerant Charge before Shipment (W (Kg))
100
Calculation Method for the Additional Refrigerant Charge
100
Caution in Case of Refrigerant Leakage
102
Maximum Permitted Concentration of Hydrofluorocarbon (HFC)
102
Calculation of Refrigerant Concentration
102
Countermeasure for R410A Refrigerant Leakage
103
10 Electrical Wiring
105
General Information
106
Electromagnetic Compatibility
106
Harmonics
107
General Verifications
107
DIP and RSW Switches Settings
107
Ras-3Hvrc2
107
Ras-(4-6)H(V)(R/N)(P/C)2E
110
System Wiring Diagram
113
Outdoor and Indoor Unit Electrical Wiring
113
Wire Size
114
H-LINK II System
115
Features
115
Specifications
115
DIP Switch Setting for 2, 3 and 4 Indoor Units Systems
116
Examples of the System of Connection between H-LINK and H-LINK II Units
118
Examples of H-LINK II System
119
System Control - Main Concept
121
UTOPIA Prime
121
UTOPIA IVX Prime
122
System Control Comparison
123
11 Troubleshooting
125
On-Screen Displays During Abnormal Operation
126
Alarm Codes
128
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Hitachi UTOPIA RAS-4 Series Specifications
General
Brand
Hitachi
Model
UTOPIA RAS-4 Series
Category
Air Conditioner
Language
English
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