Table Of Contents; Safety Precautions - Fujitsu AJ 040KCTAH Series Installation Manual

INSTALLATION MANUAL
VRF system outdoor unit
PART No. 9380545552-01
Contents
1. SAFETY PRECAUTIONS ........................................................................... 1
1.1. Precautions for using R32 refrigerant ................................................... 2
2. ABOUT THIS PRODUCT ........................................................................... 4
2.1. Installation tools .............................................................................. 4
2.2. Accessories .................................................................................... 4
2.3. Combinations ................................................................................. 4
2.4. Operating range .............................................................................. 4
2.5. Optional parts ................................................................................. 5
3. INSTALLATION WORK .............................................................................. 5
3.1. Selecting an installation location ......................................................... 5
3.2. Drain processing .............................................................................. 5
3.3. Clearance requirement ..................................................................... 5
3.4. Transporting the unit ........................................................................ 6
3.5. Installing the unit .............................................................................. 6
4. SYSTEM CONFIGURATION ........................................................................ 7
4.1. System configuration ........................................................................ 7
4.2. Pipe selection ................................................................................. 7
4.3. Protection of pipes ........................................................................... 7
5. PIPE INSTALLATION ................................................................................. 7
5.1. Brazing .......................................................................................... 7
5.2. Indoor unit pipe connections ............................................................... 7
5.3. Opening for piping ........................................................................... 8
5.4. Pipe connection .............................................................................. 8
6. ELECTRICAL WIRING .............................................................................. 9
6.1. The precautions of electrical wiring ...................................................... 9
6.2. Opening for wiring ........................................................................... 9
6.3. Selecting power supply cable and breaker .......................................... 10
6.4. Transmission line ........................................................................... 10
6.5. Wiring method .............................................................................. 11
6.6. Optional parts wiring ..................................................................... 12
7. FIELD SETTING .................................................................................... 13
7.1. Field setting switches ..................................................................... 13
7.2. DIP switch setting ........................................................................ 13
7.3. Rotary switch setting ..................................................................... 14
7.4. Push button setting ........................................................................ 14
7.5. Address setting for signal amplifiers ................................................... 15
7.6. Indoor unit address setting ............................................................... 15
7.7. Resistance measurement of transmission cable
(Measure with breaker OFF) ............................................................ 16
8. PIPE INSTALLATION II ........................................................................... 16
8.1. Sealing test ................................................................................. 16
8.2. Vacuum process ........................................................................... 16
8.3. Additional charging ........................................................................ 17
8.4. Installing thermal insulation ............................................................ 17
8.5. Filling with putty ........................................................................... 17
9. TEST RUN .......................................................................................... 18
9.1. Indoor unit connection check ............................................................ 18
9.2. Pre-check for test run ..................................................................... 18
9.3. Test run method ........................................................................... 18
9.4. Checklist .................................................................................... 19
10. STATUS DISPLAY ................................................................................. 19
10.1. Normal operation codes .................................................................. 19
10.2. Error codes ................................................................................. 19
11. INFORMATION .................................................................................... 20

1. SAFETY PRECAUTIONS

• Be sure to read this installation manual thoroughly before installation.
• The warnings and precautions indicated in this installation manual contain important
information pertaining to your safety. Be sure to observe them.
• After installing the unit, perform a test run to make sure the unit operates normally. Then,
explain to the customer how to operate and maintain the unit.
• Pass this installation manual together with the operation manual to the customer. Ask the
customer to keep the operation manual and installation manual at hand for future refer-
ence during the moving or repair of the main unit.
En-1
[Original instructions]
Consult the retail store or professional technicians to install the main unit according to
the installation manual. Improper installation will cause serious accidents such as refrig-
erant leakage, water leakage, electric shock, and fire. Manufacturer's guarantee will be
invalid when instructions in the installation manual are ignored during installation.
For installation purposes, be sure to use the parts supplied by the manufacturer or other
prescribed parts. Using non-specified parts will cause serious accidents such as falling
unit, refrigerant leakage, water leakage, electric shock, and fire.
To install a unit that uses the R32/R410A refrigerant, use dedicated tools and pipe mate-
rials that have been manufactured specifically for R32/R410A use.
Because the pressure of the R32/R410A refrigerant is approximately 1.6 times higher
than the R22, failure to use dedicated pipe material or improper installation can cause
rupture or injury. It will also cause serious accidents such as refrigerant leakage, water
leakage, electric shock, and fire.
Do not use this equipment with air or any other unspecified refrigerant in the refrigerant
lines. Excess pressure can cause a rupture.
Be sure to install the unit as prescribed, so that it can withstand earthquakes and
typhoons or other strong winds. Improper installation can cause the unit to topple or fall,
or other accidents.
To deal with unpredictable weather conditions caused by climate change, fix the outdoor
unit(s) to mounting racks or mounting lifters with bolts securely. In addition, consider
reinforcing the fixing with strapping down, caging, adding fixtures, etc., so that it can
withstand unpredictable high-velocity winds. Failing to follow these requirements can
result in system damage, system failure, personal injury, structural damage, or other
property damage. We will assume no responsibility in regards to failures, other defects,
and damages incurred by improper installation, such as ignorance of regulatory guide-
lines or other local codes.
Ensure that the outdoor unit is securely installed at a place that can withstand the
weight of the unit. Improper installation will cause injuries caused by falling unit.
If there is a refrigerant leakage, make sure that it does not exceed the concentration
limit. If a refrigerant leakage exceeds the concentration limit, it can lead to accidents
such as oxygen starvation.
If a refrigerant leakage occurs during operation, immediately vacate the premises and
thoroughly ventilate the area. If the refrigerant is exposed to fire, it will create a hazard-
ous gas.
Electrical work must be performed in accordance with this installation manual by a
person certified under the national or regional regulations. Be sure to use a dedicated
circuit for the unit. An insufficient power supply circuit or improperly performed electrical
work can cause serious accidents such as electric shock or fire.
For wiring, use the prescribed type of cables, connect them securely, making sure that
there are no external forces of the cables applied to the terminal connections. Improp-
erly connected or secured cables can cause serious accidents such as overheating the
terminals, electric shock, or fire.
Securely install the electrical box cover on the unit. An improperly installed electrical box
cover can cause serious accidents such as electric shock or fire through exposure to
dust or water.
Do not turn on the power until all work has been completed. Turning on the power
before the work is completed can cause serious accidents such as electric shock or fire.
After the installation, make sure there is no refrigerant leakage. If the refrigerant leaks
into the room and becomes exposed to a source of fire such as a fan heater, stove, or
burner, it will create a hazardous gas.
Use a wall hole pipe. Otherwise, it may cause a short circuit.
Do not place the outdoor unit near the handrail of the balcony. Children may climb onto
the outdoor unit, lean over the handrail and fall over.
Use only a specified power cable. Poor connection, poor electrical insulation, and
exceeding the allowable current will lead to electric shock and fire.
Attach the connecting cables securely to the terminal. Or secure it firmly with a "wiring
suppressor". Loose connection will lead to malfunction, electric shock, and fire.
Be sure to install an earth-leakage breaker that can shut down all power supplies within
the system at the same time. If you do not install a breaker, it may cause electric shock
and fire.
During installation, make sure that the refrigerant pipe is attached firmly before you run
the compressor. Do not operate the compressor under the condition of refrigerant piping
not attached properly with 2-way or 3-way valve open. This may cause abnormal pres-
sure in the refrigeration cycle that leads to rupture and even injury.
During the pump-down operation, make sure that the compressor is turned off be-
fore you remove the refrigerant pipes. Do not remove the connection pipe while the
compressor is in operation with 2-way or 3-way valve open. This may cause abnormal
pressure in the refrigeration cycle that leads to breakage and even injury.
This mark indicates procedures which, if improperly per-
WARNING
formed, might lead to the death or serious injury of the user.
This mark indicates procedures which, if improperly per-
CAUTION
formed, might possibly result in personal harm to the user, or
damage to property.
WARNING