Installing Heat Insulation; Replacement Of The Fi Lter Panel Screws; Installing Drain Pipes; Electrical Wiring - Fujitsu ARUV12TLAV Installation Manual

4.4 Installing heat insulation

• Install the coupler heat insulation after completing the refrigerant leak check (for details, refer to
the installation manual for the outdoor unit).
• There should be no gaps between the insulation and the product.
No gap
Cable tie
(Locally purchased)
Connection pipe (liquid)
Grommet
Connection pipe (gas)
Cable tie
(Locally purchased)
No gap
4.5 Replacement of the fi lter panel screws
Air fi lter
Use the plastic screws (accessories) when reattaching the fi lter panel.
(The metal screws fi xing the fi lter panel at the time of shipment from the factory
are for transportation.)
Metal screws
(For transportation)
Red

5. INSTALLING DRAIN PIPES

• Use general hard polyvinyl chloride pipe ø 3/4 in (19.05 mm) [I.D.] and connect it with adhesive
(polyvinyl chloride) so that there is no leakage.
• The position of the installed drain pipe should have a downward gradient of 1/100 or more.
• To prevent the pipe from freezing, use a heat insulation material as needed.
• Avoid blocking fi lter service access when installing condensate drain piping.
• Provide supporters when long pipes are installed.
On the main drain, provide 1 trap near the indoor unit.
This unit has a primary and a secondary drain port.
Indoor unit
A
B
Base or return plenum
(Locally purchased)
Be sure to properly insulate the drain pipes.
Make sure the drain water is properly drained.
Coil access panel (left)
Unit inside
Gas pipe heat
No gap insulation
(Accessories)
Filter panel
Plastic screws
(accessories)
A: 3-15/16 in (100 mm) (Approx.)
B: 1-15/16 to 3-15/16 in (50 to 100 mm)
Downward gradient 1/100
CAUTION

6. ELECTRICAL WIRING

Electrical work must be performed in accordance with this Manual by a person certifi ed
under the national or regional regulations. Be sure to use a dedicated circuit for the unit.
An insuffi cient power supply circuit or improperly performed electrical work can cause
serious accidents such as electric shock or fi re.
Before starting work, check that power is not being supplied to the all units.
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.
Improperly connected or secured cables can cause serious accidents such as overheating
the terminals, electric shock, or fi re.
Securely install the electrical box cover on the unit.
An improperly installed electrical box cover can cause serious accidents such as electric
shock or fi re through exposure to dust or water.
Install sleeves into any holes made in the walls for wiring. Otherwise, a short circuit could
result.
Use the included connection cables and power cables or ones specifi ed by the
manufacturer. Improper connections, insuffi cient insulation, or exceeding the allowable
current can cause electric shock or fi re.
Do not modify the power cables, use extension cables, or use any branches in the wiring.
Improper connections, insuffi cient insulation, or exceeding the allowable current can cause
electric shock or fi re.
Match the terminal block numbers and connection cable colors with those of the outdoor
unit (or RB unit). Erroneous wiring may cause burning of the electric parts.
Securely connect the connection cables to the terminal board. In addition, secure the
cables with wiring holders. Improper connections, either in the wiring or at the ends of the
wiring, can cause a malfunction, electric shock, or fi re.
Always fasten the outside covering of the connection cable with the cable clamp. (If the
insulator is chafed, electric discharge may occur.)
We suggest installing GFEB breakers or follow local electrical code.
When installing this system, install using ground fault equipment breakers (GFEB) to
reduce the risk of leaking current which result in electric shock or potential fi re.
Always connect the earth (ground) cable.
Improper earthing (grounding) work can cause electric shocks.
Install the remote controller cables so as not to be direct touched with your hand.
Perform wiring work in accordance with standards so that the air conditioner can be
operated safely and positively.
Connect the connection cable fi rmly to the terminal board. Imperfect installation may cause
a fi re.
If the supply cable is damaged, it must be replaced by the manufacturer, its service agent
or similarly qualifi ed persons in order to avoid a hazard.
Earth (Ground) the unit.
Do not connect the earth (ground) cable to a gas pipe, water pipe, lightning rod, or a
telephone earth (ground) cable.
Improper earthing (grounding) may cause electric shock.
Do not connect power supply cables to the transmission or remote controller terminals, as
this will damage the product.
Never bundle the power supply cable and transmission cable, remote controller cable
together.
Separate these cable by 2 in (50 mm) or more.
Bundling these cables together will cause miss operation or breakdown.
When handling PCB, static electricity charged in the body may cause malfunction of the
PCB. Follow the cautions below:
• Establish an earth (ground) for the indoor and outdoor units and peripheral devices.
• Cut power (breaker) off.
• Touch metal part of the indoor unit for more than 10 seconds to discharge static
electricity charged in the body.
• Do not touch terminals of parts and patterns implemented on PCB.
WARNING
CAUTION
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