Fujitsu AMUH48KUAS Installation Manual

AIR CONDITIONER
INDOOR UNIT (Duct type)
Contents
1. SAFETY PRECAUTIONS ...................................................... 1
1.1. IMPORTANT! Please read before starting ........................... 1
1.2. Special precautions ......................................................... 1
2. PRODUCT SPECIFICATION ................................................... 2
2.1. Precautions for using R32 refrigerant ................................. 2
2.2. Refrigerant leakage sensor ............................................. 4
2.3. Installation tools ............................................................ 5
2.4. Accessories .................................................................. 5
2.5. Pipe requirt .................................................................. 5
2.6. Electrical requirement ...................................................... 5
2.7. Optional parts ............................................................... 6
3. INSTALLATION WORK ......................................................... 6
3.1. Selecting an installation location ....................................... 6
3.2. Indoor unit dimensions ................................................... 7
3.3. Clearance and return air requirements ................................. 7
3.4. Airfl ow direction and preparation before installation ............... 8
3.5. Installing the unit ......................................................... 11
3.6. Pipe installation ......................................................... 12
3.7. Electrical wiring ......................................................... 13
4. OPTIONAL INSTALLATION WORK ....................................... 15
4.1. Optional kit installation ................................................ 15
4.2. External input and output ............................................. 15
4.3. Heater connection ...................................................... 16
5. REMOTE CONTROL INSTALLATION .................................... 16
5.1. Group control ............................................................ 16
5.2. Multiple remote control ................................................ 17
6. FUNCTION SETTING ......................................................... 17
6.1. Function details ......................................................... 17
6.2. Static pressure ............................................................ 20
7. CHECK LIST ..................................................................... 20
8. TEST RUN ........................................................................ 21
8.1. Check items ............................................................... 21
8.2. Operation method ...................................................... 21
9. FINISHING ........................................................................ 21
10. CUSTOMER GUIDANCE ...................................................... 21
11. ERROR CODES ............................................................... 22
NOTES: This manual describes how to install the air conditioner described above.
Handling and installation shall only be done by professionals as outlined in this
manual.
• Installation must be performed in accordance with the requirement of NEC (National Electri-
cal Code) and CEC (Canadian Electrical Code) by authorized personnel only.
• This product is different from other Fujitsu General products and it is designed with United
States customary unit. Metric units are provided for reference. When the exact dimensions
and tolerances are required, refer to the United States customary units.
INSTALLATION MANUAL

1. SAFETY PRECAUTIONS

1. 1. 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.
This symbol refers to a hazard or unsafe practice which can result in
WARNING:
severe personal injury or death.
This symbol refers to a hazard or unsafe practice which can result in
CAUTION:
personal injury and the potential for product or property damage.
• Hazard alerting symbols
: Electrical
If Necessary, Get Help
These instructions are all you need for most installation sites and maintenance 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.

1. 2. 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 wir-
ing diagram and these instructions when wiring. Improper connections and inadequate
grounding (earthing) can cause accidental injury or death.
• Ground (Earth) the unit following local electrical codes.
• Connect all wiring tightly. Loose wiring may cause overheating at connection 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 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.
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 opening the refrigerant valves.
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 operation manual.
PART No. 9380243014-01
For authorized service personnel only.
: Safety/alert
En-1