Fujitsu ASU18RLQ/AOU18RLQ - User Manual

SPLIT TYPE ROOM AIR CONDITIONER
INSTALLATION MANUAL
(P/N 9314989063-01) ENGLISH
(MODEL: ASU15RLQ/AOU15RLQ; ASU18RLQ/AOU18RLQ)
IMPORTANT!
Please Read Before Starting
This air conditioning system meets strict safety and operating standards.
As the installer or service person, it is an important part of your job to
install or service the system so it operates safely and efficiently.
For safe installation and trouble-free operation, you must:
• Carefully read this instruction booklet before beginning.
• Follow each installation or repair step exactly as shown.
• Observe all local, state, and national electrical codes.
• Pay close attention to all danger, warning, and caution notices given in
this manual.
WARNING:
This symbol refers to a hazard or unsafe practice which
can result in severe personal injury or death.
CAUTION:
This symbol refers to a hazard or unsafe practice which
can result in personal injury and the potential for product
or property damage.
• Hazel alerting symbols
Electrical
Safety / alert
If Necessary, Get Help
These instructions are all you need for most installation sites and mainte-
nance conditions. If you require help for a special problem, contact our
sales/service outlet or your certified dealer for additional instructions.
In Case of Improper Installation
The manufacturer shall in no way be responsible for improper installation
or maintenance service, including failure to follow the instructions in this
document.
SPECIAL PRECAUTIONS
When Wiring
ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL
INJURY OR DEATH. ONLY A QUALIFIED, EXPERIENCED
ELECTRICIAN SHOULD ATTEMPT TO WIRE THIS SYSTEM.
• Do not supply power to the unit until all wiring and tubing are completed
or reconnected and checked.
• Highly dangerous electrical voltages are used in this system. Carefully
refer to the wiring diagram and these instructions when wiring. Improper
connections and inadequate grounding can cause accidental injury
or death.
• Ground the unit following local electrical codes.
• Connect all wiring tightly. Loose wiring may cause overheating at con-
nection points and a possible fire hazard.
When Transporting
Be careful when picking up and moving the indoor and outdoor units.
Get a partner to help, and bend your knees when lifting to reduce strain
on your back. Sharp edges or thin aluminum fins on the air conditioner
can cut your fingers.
When Installing...
...In a Ceiling or Wall
Make sure the ceiling/wall is strong enough to hold the unit’s weight. It
may be necessary to construct a strong wood or metal frame to provide
added support.
...In a Room
Properly insulate any tubing run inside a room to prevent “sweating”
that can cause dripping and water damage to walls and floors.
...In Moist or Uneven Locations
Use a raised concrete pad or concrete blocks to provide a solid, level
foundation for the outdoor unit. This prevents water damage and abnor-
mal vibration.
...In an Area with High Winds
Securely anchor the outdoor unit down with bolts and a metal frame.
Provide a suitable air baffle.
...In a Snowy Area (for Heat Pump-type Systems)
Install the outdoor unit on a raised platform that is higher than drifting
snow. Provide snow vents.
When Connecting Refrigerant Tubing
• Keep all tubing runs as short as possible.
• Use the flare method for connecting tubing.
• Apply refrigerant lubricant to the matching surfaces of the flare and
union tubes before connecting them, then tighten the nut with a torque
wrench for a leak-free connection.
• Check carefully for leaks before starting the test run.
NOTE:
Depending on the system type, liquid and gas lines may be either nar-
row or wide. Therefore, to avoid confusion the refrigerant tubing for your
particular model is specified as either “small” or “large” rather than as
“liquid” or “gas”.
When Servicing
• Turn the power OFF at the main circuit breaker panel before opening
the unit to check or repair electrical parts and wiring.
• Keep your fingers and clothing away from any moving parts.
• Clean up the site after you finish, remembering to check that no metal
scraps or bits of wiring have been left inside the unit being serviced.
• After installation, explain correct operation to the customer, using the
operating manual.

Summary

Important Safety and Operating Instructions

Key Warnings, Cautions, and Installation Precautions

Covers critical safety warnings, caution definitions, and general installation precautions for user safety and product integrity.

R410 A Refrigerant System Requirements

Specifics, Tools, and Warnings for R410 A

Details R410A refrigerant specifics, required special tools, copper pipe requirements, and critical installation warnings.

General Installation Guidelines and Components

Materials, Operating Range, and Electrical Needs

Outlines required materials, operating ranges, additional charges, and electrical supply specifications.

Mounting Position Selection Criteria

Indoor;Outdoor Unit Placement and Clearance Diagrams

Provides guidelines for selecting indoor and outdoor unit locations, including clearance diagrams and drainage considerations.

Indoor Unit Installation Steps

Wall Hole Cutting, Bracket Mounting, and Drain Hose Setup

Detailed instructions for cutting wall openings, installing the wall hook bracket, and forming the drain hose and piping.

Indoor Unit Piping and Connection

Piping Flaring, Bending, and Connection Torque

Covers connecting refrigerant piping, including flaring, bending, tightening torque, and cautions for secure connections.

Outdoor Unit Installation and Air Purge

Mounting, Connector Cover, and Vacuum Pump Procedures

Guides on outdoor unit installation, connector cover handling, securing against wind, and the air purge process using a vacuum pump.

Outdoor Unit Electrical Wiring

Wiring Steps, Safety, and Terminal Connections

Details the steps for wiring the outdoor unit, including safety warnings, notes on connectors, and the terminal wiring diagram.

Indoor Unit Electrical Wiring

Harness Installation and Wire Termination

Explains installing the inter-unit wire harness and connecting wires to terminals for the indoor unit, with cautions.

Finishing Installation and Unit Components

Piping Insulation, Sealing, and Panel Procedures

Covers pipe insulation, sealing wall gaps, drain hose securing, and procedures for removing/installing front panels and grilles.

Wired Remote Control Unit Installation

Pre-Installation Checks and Panel;Control Unit Removal

Outlines pre-installation checks, cautions, and steps to remove the indoor unit's front panel and control unit.

Connecting and Reinstalling Wired Remote Components

Wire Connection and Panel Reassembly

Details connecting the wired remote wire to the control unit and reinstalling the front panel and control unit.

Test Running and System Power Management

Operation Checks, Power Safety, and Refrigerant Recovery

Guides on performing test runs, power safety, customer guidance, and pump down operation for refrigerant recovery.

Inter-Unit Wire Harness Adjustment

Wire Harness Length Adjustment Diagram

Provides a diagram and instructions for correctly adjusting the length of the inter-unit wire harness.

Remote Control Unit Holder Installation

Holder Mounting Cautions and Procedure

Covers cautions for selecting the remote control unit holder location and the procedure for its installation.

Fujitsu ASU18RLQ/AOU18RLQ Specifications

General

Brand	Fujitsu
Model	ASU18RLQ/AOU18RLQ
Category	Air Conditioner
Language	English