Hitachi UTOPIA IVX Prime R32 / R410A Technical Catalogue TCGB0136 2021 – RAS-(4-6)H(V)(R/N)(C/P)2E Series PDF

Description

The Hitachi UTOPIA Prime and UTOPIA IVX Prime R32 / R410A Technical Catalogue is the full engineering reference for the 2021 generation of Hitachi’s outdoor unit range, covering the RAS-3HVRC2 and RAS-(4-6)H(V)(R/N)(C/P)2E series in single-phase and three-phase versions running on R32 or R410A refrigerant. Issued as document TCGB0136 rev.1 – 05/2021, this technical catalogue is the source document specifiers, installers and service technicians turn to when sizing, piping, wiring, commissioning or diagnosing a UTOPIA Prime / UTOPIA IVX Prime system.

File Details

• Manual type: Technical Catalogue
• Brand: Hitachi (Johnson Controls-Hitachi Air Conditioning Spain, S.A.U.)
• Series covered: UTOPIA Prime and UTOPIA IVX Prime – R32 and R410A
• Outdoor unit models covered: RAS-3HVRC2, RAS-(4-6)H(V)(R/N)(C/P)2E
• Refrigerants: R32 (GWP 675) and R410A (GWP 2088)
• Language: English
• Document number: TCGB0136 rev.1
• Date: 05/2021
• File format: PDF

Chapters Covered

• 1. General Information
  • Applied symbols, norms and regulations
  • Classification of outdoor unit models
  • Classification of indoor unit models
  • Product line-up: outdoor units
  • Outdoor unit accessory code list
  • Product line-up: indoor units (RCI, RCIM, RCD, RPC, RPI, RPK, RPF, RPFI)
  • KPI energy recovery unit, DX-Interface, Econofresh, Multi-Kits
  • Individual remote controls, receiver kits, centralised remote controls
  • Building air conditioning controls and BMS gateways
• 2. Features and Benefits
  • Improvements of the UTOPIA Prime / UTOPIA IVX Prime series
  • R32 refrigerant advantages over R410A
  • Eco-Design and Seasonal Efficiency (SEER, SCOP)
  • Energy classes and energy label (Lot 10)
  • Main features, selection benefits, installation, start-up and maintenance benefits
• 3. General Data
  • General specifications per model
  • Cooling and heating performance
  • Component data (heat exchanger, fan, compressor)
  • Electrical data
• 4. Capacities and Selection Data
  • Combinability range and connected capacity ratio
  • System selection procedure (steps 1 and 2)
  • Maximum cooling capacity and maximum heating capacity
  • Correction indoor fan speed factor
  • Piping length correction factor (fLC, fLH)
  • Defrost operation correction factor (fD)
  • Correction ratio due to humidity (CR)
  • Correction factor according to altitude (fAL)
• 5. Acoustic Characteristic Curves
  • Overall sound level
  • Sound pressure curves
  • Sound power curves
• 6. Working Range
  • Power supply and operating voltage
  • Temperature working range
  • Special DSW configuration for low ambient temperature (-15°C)
• 7. General Dimensions
  • Dimensions: RAS-3HVRC2 and RAS-(4-6)H(V)(R/N)(C/P)2E
  • Service space requirements
• 8. Refrigerant Cycle
  • General notes and cycle schematics
• 9. Piping Work and Refrigerant Charge
  • Refrigerant pipe selection and Multikit / distributor selection
  • Refrigerant piping range and maximum lengths
  • Copper pipes, sizes and connection
  • Insulation
  • Refrigerant charge amount and additional charge calculation
  • Caution in case of refrigerant leakage (HFC concentration)
• 10. Electrical Wiring
  • Electromagnetic compatibility and harmonics
  • General verifications
  • DIP and RSW switch settings
  • System wiring diagram and wire size
  • H-LINK II system (features, specifications, DIP settings)
  • System control (UTOPIA Prime vs UTOPIA IVX Prime)
• 11. Troubleshooting
  • On-screen displays during abnormal operation
  • Alarm codes

Read together, the UTOPIA Prime / UTOPIA IVX Prime technical catalogue gives a technician the full selection and installation chain in one document: choose the outdoor unit capacity against the combined indoor unit load, correct the nominal capacity for piping length, altitude, humidity and defrost, apply the temperature working range, set the DIP and RSW switches for test run and pipe length, configure the refrigerant cycle number and H-LINK II end terminal resistance, then diagnose any fault from the alarm code table. Component data, noise curves and refrigerant cycle schematics sit alongside the procedures so design decisions and field work are grounded in the same published values.

Why This Technical Catalogue Matters

UTOPIA outdoor units are used in split and multi-split installations of up to four indoor units, with connectable capacity ratios between 90% and 115% (100% for the 3 HP model), and the R32 versions carry a refrigerant charge 7-12% lower than R410A for the same installation. Sizing a system on nominal figures alone is not enough: the piping length correction factor, the humidity correction ratio and the altitude correction factor can each move the real capacity away from the catalogue value. This document supplies the tables and formulas needed to land on the actual installed capacity. The R410A and R32 circuits have different leakage concentration limits (0.44 kg/m³ for R410A; additional minimum floor area requirements for R32 above 1.84 kg total charge), and the document explains the calculation method for both.

Jobs This Manual Supports

• Selecting the correct outdoor unit for a multi-split installation based on combined indoor unit horsepower
• Applying piping length, defrost, humidity and altitude corrections to maximum cooling and heating capacity
• Sizing refrigerant pipe diameters between outdoor unit, branch pipes (Multikit E-102SN4, E-162SN4, MH-84AN1) and indoor units
• Calculating the additional refrigerant charge for piping runs longer than the chargeless 20 m
• Setting DSW1 to DSW7 and RSW1 switches for test run, pipe length, optional functions and refrigerant cycle number
• Configuring H-LINK II transmission, end terminal resistance and indoor unit addresses for 2, 3 and 4 indoor unit systems
• Checking service space clearances for single, serial and multi-row installations
• Diagnosing faults from the alarm code table, from codes 01 and 02 up to EE and the fan controller series
• Reading overall sound pressure, sound power and octave band curves

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Instant PDF Delivery

The Hitachi UTOPIA Prime / UTOPIA IVX Prime R32 / R410A Technical Catalogue TCGB0136 rev.1 is supplied as a PDF, available for instant download once payment is complete. There is no shipping, no waiting for a physical binder, and no restriction on which device you read it from – open it on a laptop in the office, a tablet on site or a phone at the outdoor unit. Every page can be printed if a paper copy is needed for the commissioning file. Because the catalogue gathers the selection procedure, the correction tables, the piping rules, the switch settings and the alarm codes into one document, it is the single reference that keeps the design office, the installer and the service technician working from the same source.