Fujitsu 8.0kW Multi-Head Reverse Cycle Outdoor Unit (Fujitsu AOTH30KBTA4 Multi-Head Outdoor Unit)
Model Number: AOTH30KBTA4 | System Type: Inverter Multi-Split Outdoor Unit (Connects 2 to 4 Indoor Units)
Product Overview
The Fujitsu AOTH30KBTA4 Multi-Head Outdoor Unit is engineered for multi-room comfort where exterior wall space or roof space is at a premium. By connecting up to four individual indoor units to a single compact outdoor condenser, it eliminates exterior visual clutter while providing individual temperature management across separate bedrooms, living areas, or study spaces.
Powered by an advanced DC twin-rotary compressor and next-generation R32 refrigerant, the system modulates capacity seamlessly to match precise thermal load requirements. This inverter technology minimises electricity consumption, delivers ultra-smooth operation across extreme Australian climate conditions, and provides installers with substantial piping flexibility to accommodate complex architectural layouts.
Quick Highlights
- Multi-Port Connectivity: Powers 2, 3, or 4 indoor units from one outdoor condenser.
- Rated Capacity: Delivers 8.0 kW nominal cooling and 9.6 kW nominal heating.
- Next-Gen R32 Refrigerant: Higher thermal efficiency with significantly reduced Global Warming Potential.
- DC Twin-Rotary Compressor: High efficiency with low vibration and stable modulation.
- Independent Room Control: Enables individual temperature control in each connected zone.
- Wide Connectable Range: Connectable indoor unit capacity ratio spans from 4.0 kW up to 14.4 kW.
- Generous Pipe Limits: Accommodates up to 70 m total piping length and 15 m elevation difference.
- Durable Outdoor Housing: Anti-corrosive blue-fin heat exchanger coating protection.
- Extended Ambient Performance: Operates efficiently in cooling temperatures up to 46°C ambient.
- Quiet Operation: Low noise mode helps meet suburban Australian boundary council noise limits.
Why Choose This Model (Fujitsu AOTH30KBTA4 Multi-Head Outdoor Unit)?
The Fujitsu AOTH30KBTA4 Multi-Head Outdoor Unit solves the architectural challenge of heating and cooling multiple rooms without cluttering exterior walls with numerous single-split condensers. It allows homeowners to mix and match indoor head types—including wall-mounted units, slimline bulkheads, and compact cassettes—while offering independent zone control so energy is never wasted conditioning unoccupied rooms.
Key Features
4-Port Multi-Split Versatility
Engineered with four dedicated refrigerant line ports, the unit allows connection of 2 to 4 indoor units. This setup allows independent operation and individual temperature set points across separate living and sleeping zones.
High-Efficiency DC Twin-Rotary Compressor
Equipped with an advanced high-output DC twin-rotary compressor, the system operates with balanced internal rotation. This design lowers mechanical friction, reduces structural vibration, and delivers reliable energy efficiency.
R32 Eco-Friendly Refrigerant
Operating on R32 refrigerant, this outdoor unit achieves superior heat transfer capacity and enhanced energy ratings while reducing carbon footprint and refrigerant charge volume compared to previous-generation R410A systems.
Flexible Indoor Unit Pairing
Installers can mix various Fujitsu R32 indoor unit styles—including Lifestyle wall-mounted heads, compact cassettes, and ducted bulkhead units—to best match interior decor and architectural constraints.
Long Piping & High Lift Capability
With a maximum total piping length of up to 70 metres and a maximum 15-metre height difference, this unit accommodates installations across multi-storey residential dwellings, townhouses, and complex architectural layouts.
Corrosion-Resistant Heat Exchanger
The condenser coils feature an anti-corrosion blue fin treatment, protecting the heat exchanger against moisture, airborne salt, and harsh Australian atmospheric elements to ensure long operational lifespan.
Ideal Applications
- Multi-Storey Townhouses: Provides zoned conditioning across levels without using valuable balcony or patio space.
- Modern Family Homes: Efficiently conditions up to 4 bedrooms or a combination of bedrooms and living areas.
- Properties with Limited Yard Space: Replaces up to four individual outdoor units with a single neat condenser.
- Zoned Renovation Projects: Retrofits multi-room cooling into properties where ducted ceiling space is unavailable.
Why Professionals Choose This Model (Fujitsu AOTH30KBTA4 Multi-Head Outdoor Unit)?
HVAC trades, builders, and specifiers depend on the Fujitsu AOTH30KBTA4 Multi-Head Outdoor Unit for its wide indoor compatibility, straightforward commissioning, and dependable engineering. With an extensive piping allowance of up to 70 m total run, four well-spaced flare connection ports, centralized wiring access, and proven inverter reliability, this unit simplifies complex multi-room installations while minimizing maintenance callbacks.
Technical Specifications
General & Capacity Performance
| Parameter | Technical Specification |
|---|---|
| System Configuration | Multi-Split Inverter Outdoor Unit (2 to 4 Indoor Units) |
| Nominal Cooling Capacity | 8.0 kW |
| Cooling Capacity Range (Min – Max) | 2.4 kW – 10.1 kW |
| Nominal Heating Capacity | 9.6 kW |
| Heating Capacity Range (Min – Max) | 2.2 kW – 11.2 kW |
| Connectable Indoor Capacity Ratio | 4.0 kW to 14.4 kW (Combination Range) |
| EER / COP (Rated) | 4.52 / 4.68 (Dependent on connected indoor combination) |
Electrical Data
| Power Supply | 1 Phase, 230–240 V, 50 Hz |
| Power Supply Location | Outdoor Unit to Main Switchboard |
| Recommended Circuit Breaker | 20 A / 25 A (Refer to installation wiring diagram) |
| Interconnecting Cable | 4-Core (3 Core + Earth) per indoor head |
Dimensions, Weight & Noise Levels
| Dimensions (H × W × D) | 884 mm × 820 mm × 315 mm |
| Net Weight | 64 kg |
| Sound Pressure Level (Cooling / Heating) | 51 dBA / 53 dBA (Standard high mode) |
| Quiet Sound Mode (Cooling) | 47 dBA |
Refrigerant & Piping Specifications
| Refrigerant Type | R32 |
| Compressor Motor | Hermetically Sealed DC Twin-Rotary |
| Liquid Pipe Connections | 4 × 6.35 mm (1/4″) |
| Gas Pipe Connections | 3 × 9.52 mm (3/8″) + 1 × 12.70 mm (1/2″) |
| Max Total Pipe Length (All Ports) | 70 m |
| Max Length for Single Indoor Unit | 25 m |
| Max Height Difference (Outdoor vs Indoor) | 15 m |
| Operating Ambient Range (Cool / Heat) | -10°C to 46°C DB / -15°C to 24°C DB |
Installation Information of the Fujitsu AOTH30KBTA4 Multi-Head Outdoor Unit
Installation of the Fujitsu AOTH30KBTA4 Multi-Head Outdoor Unit must be completed by an ARC-licensed refrigeration and air conditioning mechanic. The unit features four dedicated flare connection sets located behind a removable protective side panel for easy access during rough-in and pressure testing. Ensure adequate clearance around the discharge grille and intake coils, and confirm correct pipe reducer sizing when pairing with larger capacity indoor heads.
Compatible Indoor Units & Accessories
- Fujitsu KMTC / KMCB Series: Lifestyle wall-mounted indoor units (2.0 kW to 6.0 kW).
- Fujitsu Compact Cassette Heads (AUXG Series): 600 × 600 mm ceiling grid cassettes.
- Fujitsu Slim Ducted Heads (ARXG Series): Low-profile concealed bulkhead indoor units.
- Heavy-Duty Cantilever Mounting Brackets: Hot-dipped galvanized wall mounting brackets.
- Anti-Vibration Rubber Feet / Poly-Slabs: Dampening pads for vibration-free slab installation.
What’s Included in Fujitsu AOTH30KBTA4 Multi-Head Outdoor Unit
- 1 x Fujitsu 8.0 kW 4-Port Multi-Split Outdoor Unit (AOTH30KBTA4)
- 1 x Set of Pipe Adapter/Reducer Fittings (where supplied for specific line sizes)
- 1 x Outdoor Drain Cap and Elbow Assembly
- 1 x Comprehensive Installation and Technical Manual
Warranty of Fujitsu AOTH30KBTA4 Multi-Head Outdoor Unit
The Fujitsu AOTH30KBTA4 Multi-Head Outdoor Unit is backed by Fujitsu General Australia’s 5-Year Full Parts and Labour Warranty for residential installations. This warranty applies when the system is installed in accordance with manufacturer guidelines by an ARC-licensed technician.
Frequently Asked Questions
Q1: How many rooms can the Fujitsu AOTH30KBTA4 Multi-Head Outdoor Unit power?
A: This unit features four dedicated refrigerant ports and is engineered to connect a minimum of 2 and a maximum of 4 indoor heads.
Q2: Can I control temperatures independently in each room?
A: Yes. Each indoor head operates on its own thermostat and controller, allowing individual room temperature settings. Note that all units must operate in either heating or cooling mode simultaneously.
Q3: Can I connect indoor heads with a total capacity exceeding 8.0 kW?
A: Yes. Multi-head systems permit indoor combination capacities up to 14.4 kW (diversity load), distributing the outdoor unit’s 8.0 kW capacity based on dynamic demand across zones.
Q4: What refrigerant is used in this condenser?
A: The AOTH30KBTA4 utilizes R32 refrigerant, offering enhanced energy performance and a lower environmental impact.
Q5: Can I mix wall-mounted and ducted bulkhead units on this outdoor unit?
A: Yes. Fujitsu’s multi-split system allows mixing compatible R32 wall-hung, bulkhead, and cassette indoor units on the same outdoor system.
Q6: Does this unit require professional installation?
A: Yes. Under Australian regulations, all refrigerant air conditioning systems must be installed and commissioned by an ARC-licensed technician.
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