Fujitsu Ducted Air Conditioning Installation Manual

The Fujitsu Ducted Air Conditioning System is a high-efficiency climate control solution designed for residential and commercial applications. This system features advanced inverter technology, multi-zone capability, intelligent airflow control, Wi-Fi connectivity, quiet operation, energy-saving modes, and comprehensive safety protections. Below are key sections for safety guidelines, system overview, installation procedures, electrical connections, commissioning, operation, maintenance, and troubleshooting.

System Overview

Key components: Outdoor unit, Indoor unit, Ductwork system, Control panel, Remote controller, Drain system, Refrigerant piping.

Safety Precautions

Critical safety measures must be followed during installation and maintenance.

1. Disconnect all power sources before beginning work.
2. Use proper personal protective equipment (PPE).
3. Ensure adequate ventilation in installation area.
4. Follow local electrical codes and regulations.
5. Use certified refrigerant handling procedures.

WARNING! Failure to follow safety procedures may result in electric shock, fire, or personal injury. Only qualified technicians should perform installation.

Pre-Installation Requirements

Site preparation and equipment verification before installation.

1. Verify unit model and capacity match project requirements.
2. Check structural integrity of mounting surfaces.
3. Ensure adequate clearance around outdoor unit (min 500mm all sides).
4. Confirm electrical supply meets unit specifications.
5. Plan ductwork routing and register locations.

CAUTION! Ensure installation site can support unit weight and vibration loads.

Installation Procedures

• Outdoor Unit Placement: Level concrete pad or wall brackets, vibration isolators.
• Indoor Unit Mounting: Ceiling suspension with proper clearance, service access.
• Clearance Requirements: Outdoor unit 500mm minimum, indoor unit 300mm service access.
• Mounting Hardware: Use manufacturer-supplied brackets and fasteners.
• Leveling: Ensure all units are properly leveled for optimal operation.
• Weather Protection: Outdoor unit shelter from direct elements if required.

Electrical Connections

Power supply and control wiring installation guidelines.

1. Disconnect main power before wiring.
2. Follow wiring diagram provided with unit.
3. Use proper gauge wires for power and control circuits.
4. Install dedicated circuit breaker for outdoor unit.
5. Ground all electrical components properly.
6. Connect communication cables between indoor and outdoor units.

Tip: Use conduit for all exposed wiring and label all connections.

Ductwork Installation

Duct system design and installation procedures.

1. Size ducts according to airflow requirements.
2. Install supply and return ducts with proper sealing.
3. Use flexible ducts with minimal bends and proper support.
4. Install balancing dampers for airflow control.
5. Seal all duct connections with approved mastic or tape.
6. Insulate ducts in unconditioned spaces.

WARNING! Ensure ductwork is properly supported and sealed to prevent air leakage and noise.

Refrigerant Piping

Refrigerant line installation and charging procedures.

1. Use clean, dehydrated copper tubing of correct diameter.
2. Cut pipes squarely and remove burrs.
3. Flare connections to proper angle and thickness.
4. Insulate both liquid and suction lines.
5. Pressure test system with dry nitrogen.
6. Evacuate system to 500 microns vacuum.
7. Charge with specified refrigerant type and quantity.

CAUTION! Only certified technicians should handle refrigerants. Follow all environmental regulations.

Commissioning & Testing

System startup, testing, and performance verification.

1. Verify all electrical connections are secure.
2. Check refrigerant charge and system pressures.
3. Test airflow at all supply registers.
4. Verify temperature differential across coil.
5. Test all control functions and safety devices.
6. Measure system amperage and voltage.
7. Confirm condensate drainage is functioning.

Tip: Record all test measurements for future reference and warranty validation.

Control System Setup

Controller configuration and system programming.

Wall Controller: Mode selection, temperature setpoint, fan speed, timer functions.

Remote Control: All basic functions plus advanced features programming.

System Settings: Thermostat calibration, fan control, filter timer, system mode, zone control setup, Wi-Fi connectivity configuration, schedule programming, temperature limits, lock functions.

Maintenance Guidelines

Regular maintenance procedures for optimal performance.

Monthly: Check and clean air filters. Quarterly: Inspect condensate drain system. Annually: Professional service including coil cleaning, electrical inspection, refrigerant check, and system performance test.

CAUTION! Always disconnect power before performing any maintenance. Use only manufacturer-approved parts.

Troubleshooting

Reset: Power cycle unit or use controller reset function.

Service: Contact authorized Fujitsu service center for professional assistance.