Installation Manuals
ARTH Large Capacity Ducted Systems, AOTH Outdoor Units and UTY-RNRT Wired Remote Controller
This article provides the installation manuals and key installation reference information for the applicable GENERAL AIRSTAGE large-capacity ducted indoor units, matching AOTH outdoor unit series and the UTY-RNRT wired remote controller.
Important: These documents are intended for authorised service personnel and qualified installers. This article is a quick reference only and does not replace the applicable installation manual, local electrical requirements, refrigerant handling requirements or other applicable regulations.
Installation Manuals
AOTH Outdoor Unit Installation Manual
Manual Part No.: 9379113496-01
Applicable models:
AOTH45KCTA | AOTH54KCTA | AOTH60KCTA | AOTH60KBTA | AOTH65KBTA | AOTH60KRTA | AOTH65KRTA | AOTH72KRTA | AOTH90KRTA
The manual includes:
- R32 refrigerant safety requirements
- Pipe sizes and allowable piping lengths
- Electrical requirements and breaker selection
- Additional refrigerant charging
- Installation clearances and mounting requirements
- Drain installation
- Refrigerant piping and flare connections
- Sealing test and vacuum procedure
- Electrical wiring
- Test run procedure
- Field settings
- External input and output
- Pump-down procedure
- Error code information
View / Download Outdoor Installation Manual
ARTH Ducted Indoor Unit Installation Manual
Manual Part No.: 9381386680-01
Applicable models:
ARTH60KHTB | ARTH65KHTA | ARTH72KHTA | ARTH90KHTA
The manual includes:
- R32 safety requirements
- Indoor unit installation dimensions
- Suspension and mounting requirements
- Drain installation
- Fresh-air intake provisions
- Refrigerant piping
- Electrical wiring
- Remote controller connection
- Optional control accessories
- External input and output
- Remote sensor configuration
- Group control and multiple remote controllers
- Function settings
- Static pressure settings
- Automatic airflow adjustment
- Installation checklist and test run
- Error codes
View / Download Indoor Installation Manual
UTY-RNRT Wired Remote Controller Installation Manual
Model: UTY-RNRT
Manual Part No.: 9373328582-01
The manual includes:
- Remote controller installation location
- Controller dimensions and mounting
- 2-wire connection requirements
- Single control
- Group control
- Multiple remote controller configuration
- DIP switch setup
- Initial start-up configuration
- Master / Slave settings
- Room temperature sensor selection
- Function settings
- Maintenance menu
- Test run
- Error codes
View / Download UTY-RNRT Installation Manual
Quick Installation Reference
Refrigerant Pipe Sizes
| Capacity / Model | Liquid Pipe | Gas Pipe |
|---|
| 60 / 65 models | 9.52 mm (3/8") | 15.88 mm (5/8") |
| 72 / 90 models | 12.70 mm (1/2") | 19.05 mm (3/4") |
Outdoor Unit Piping Length
| Outdoor Models | Maximum Length | Pre-Charged Length |
|---|
| AOTH60KBTA / AOTH60KRTA | 50 m | 30 m |
| AOTH45KCTA / AOTH54KCTA / AOTH60KCTA / AOTH65KBTA / AOTH65KRTA | 75 m | 30 m |
| AOTH72KRTA / AOTH90KRTA | 75 m | 30 m |
All models: Minimum refrigerant piping length is 5 m and maximum allowable height difference between indoor and outdoor units is 30 m. Refer to the outdoor installation manual for additional refrigerant charge requirements where piping exceeds the pre-charged length.
Outdoor Electrical Reference
| Model Group | Supply | Breaker | Earth Leakage Breaker |
|---|
| 45KC / 54KC / 60KC / 60KB / 65KB | Single Phase | 32 A | 30 mA |
| 60KR / 65KR | Three Phase | 16 A | 30 mA |
| 72KR / 90KR | Three Phase | 20 A | 30 mA |
Outdoor power supply cable minimum conductor size is 4 mm² for single-phase models and 2.5 mm² for three-phase models. Cable and breaker selection must also comply with the applicable local electrical requirements.
Indoor Unit Electrical Reference
- The indoor unit is powered from the outdoor unit.
- Do not provide a separate power supply directly to the indoor unit.
- Minimum indoor/outdoor connection cable conductor size: 1.5 mm².
- For a 2-wire controller, use a non-polar, 2-core twisted pair shielded cable.
ARTH Static Pressure
| Model | External Static Pressure Range | Standard Setting |
|---|
| ARTH60KHTB | 60 - 210 Pa | 60 Pa |
| ARTH65KHTA | 60 - 200 Pa | 60 Pa |
| ARTH72KHTA / ARTH90KHTA | 60 - 200 Pa | 72 Pa |
Static pressure is configured using Function 26. The indoor unit also supports an Automatic Airflow Adjustment setting. Refer to Section 6.2 of the indoor installation manual for the complete procedure.
UTY-RNRT Quick Reference
- Controller type: 2-wire, non-polar
- Cable: 0.33 to 1.25 mm² shielded, twisted pair
- Group control: Up to 16 indoor units from one wired controller
- Multiple controllers: Up to 4 on VRF or 2 on RAC systems where supported
- Recommended installation height: Approximately 1.4 m above floor level
- Installer password: Factory default is 0000
- Set the controller DIP switch to ON before normal use to enable the backup function.
R32 Refrigerant Safety
R32 refrigerant: These products use R32 refrigerant. Appropriate R32-compatible installation and service equipment, piping, leak detection equipment and work practices must be used. Minimum room-area requirements, refrigerant charge requirements and ignition-source precautions contained in the applicable installation manual must be observed.
Do not rely on this knowledge article as a substitute for the complete installation manual. Always confirm the requirements applicable to the exact model being installed.
Search terms:
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