Fujitsu Heat Pump Installation Manual

The Fujitsu Heat Pump is a high-efficiency heating and cooling system designed for residential and commercial applications. This advanced system features inverter technology for precise temperature control, multiple operation modes, energy-saving functions, remote control capability, built-in safety protections, and compatibility with various indoor unit configurations. Below are key sections for safety guidelines, system features, installation procedures, electrical connections, commissioning, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Outdoor unit with inverter compressor, Indoor unit with multi-directional airflow, Remote controller, Refrigerant piping connections, Electrical terminal blocks, Drain connections.

Safety Guidelines

Read all safety instructions before installation and operation.

1. Installation must be performed by qualified HVAC technicians only.
2. Disconnect all power sources before servicing or installation.
3. Ensure proper grounding of all electrical components.
4. Use appropriate personal protective equipment during installation.
5. Follow local electrical codes and regulations.

WARNING! Refrigerant handling requires EPA certification. Improper installation may cause injury or equipment damage.

Installation Requirements

Verify site conditions meet all requirements before installation.

1. Location: Outdoor unit requires adequate clearance (minimum 12 inches on all sides).
2. Mounting: Use vibration-absorbing pads for outdoor unit installation.
3. Refrigerant Lines: Maximum piping length 50 feet, elevation difference 33 feet maximum.
4. Electrical: Dedicated circuit required per local electrical codes.
5. Drainage: Proper slope for condensate drainage (minimum 1/4 inch per foot).

CAUTION! Ensure structural support can handle unit weight. Use lifting equipment for heavy components.

Specifications

• Cooling Capacity: 9,000 - 36,000 BTU/h (depending on model)
• Heating Capacity: 10,000 - 38,000 BTU/h (depending on model)
• Power Supply: 208-230V, 60Hz, 1-phase
• Refrigerant: R-410A
• Operating Temperature: Cooling: 14°F to 115°F; Heating: -13°F to 75°F
• Sound Level: Indoor: 19-38 dB; Outdoor: 49-58 dB
• Dimensions: Varies by model (consult specific model documentation)
• Weight: Outdoor unit: 55-150 lbs; Indoor unit: 15-45 lbs

System Components

Complete system includes outdoor unit, indoor unit, remote controller, installation accessories.

Outdoor Unit: Compressor, condenser coil, fan motor, control board, service valves, electrical terminals.

Indoor Unit: Evaporator coil, blower assembly, air filters, drain pan, louvers, display panel.

Accessories: Remote controller, mounting brackets, communication cable, drain hose, insulation, line set.

Installation Procedures

Follow step-by-step installation sequence for proper operation.

1. Select installation location meeting clearance requirements.
2. Install mounting bracket for indoor unit (secure to wall studs).
3. Position outdoor unit on vibration pads or concrete pad.
4. Connect refrigerant piping using proper brazing techniques.
5. Install drain line with proper slope and trap.
6. Run electrical wiring and communication cable.
7. Evacuate system to 500 microns and hold for 15 minutes.
8. Charge system with specified refrigerant amount.

Tip: Use nitrogen purge during brazing to prevent oxidation.

Electrical Connections

All electrical work must comply with NEC and local codes.

1. Disconnect power before making electrical connections.
2. Connect power wiring to terminal block (L1, L2, Ground).
3. Connect communication cable between indoor and outdoor units.
4. Verify correct voltage at terminals (208-230V).
5. Install disconnect switch within sight of outdoor unit.
6. Check amp draw against specifications on nameplate.

WARNING! Incorrect wiring may cause equipment damage or fire hazard.

Commissioning & Startup

Complete system checkout before initial operation.

1. Remove all service port caps and check for leaks.
2. Verify all electrical connections are tight and secure.
3. Check refrigerant charge using subcooling/superheat method.
4. Test all operating modes (cooling, heating, fan only).
5. Verify proper condensate drainage.
6. Program remote controller and test all functions.
7. Measure temperature drop/rise across indoor coil.
8. Record operating pressures and temperatures.

CAUTION! Do not operate system without proper refrigerant charge.

Operation Instructions

System operation via remote controller or indoor unit buttons.

1. Power On: Press POWER button on remote or indoor unit.
2. Mode Selection: Choose AUTO, COOL, HEAT, DRY, or FAN.
3. Temperature Setting: Use ▲/▼ buttons to set desired temperature.
4. Fan Speed: Select AUTO, LOW, MEDIUM, HIGH, or QUIET.
5. Airflow Direction: Adjust vertical and horizontal louvers.
6. Timer: Set ON or OFF timer for automatic operation.
7. Energy Saving: Press ECO button for efficient operation.
8. Filter Reset: Hold FILTER button for 3 seconds after cleaning.

WARNING! Do not block air inlets or outlets. Maintain clear space around units.

Maintenance & Service

Regular maintenance ensures optimal performance and longevity.

Monthly: Clean air filters with vacuum or warm water. Quarterly: Check condensate drain line for clogs. Annually: Professional inspection of refrigerant charge, electrical components, and cleaning of coils.

CAUTION! Always disconnect power before performing any maintenance. Use only qualified technicians for refrigerant service.

Troubleshooting

Reset: Turn power off for 5 minutes, then restart.

Service: Contact authorized Fujitsu service center for technical support.