Installing Drain Pipes; Electrical Wiring; Electrical Requirement - Fujitsu AIRSTAGE ARUX12TLAV2 Installation Manual

4.4. Installing drain pipes

The drain pan has two 3/4 in NPT (National pipe thread) female primary and two secondary
connections (left or right hand). Horizontal pan has two 3/4 in NPT female, one primary and
one secondary. Piping from each fitting used is to have 2 in minimum trap and each run in
such a manner as to provide enough slope for adequate drainage to a visible area. Do not
pipe these two fittings together into a common drain. Cap unused connection.
Installation example (locally purchased)
2 (50.8)
or more
2 (50.8)
or more
Be sure to properly insulate the drain pipes.
Make sure the drain water is properly drained.

5. ELECTRICAL WIRING

Electrical work must be performed in accordance with this 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 seri-
ous accidents such as electric shock or fire.
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 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.
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 specified by the manufac-
turer. Improper connections, insufficient insulation, or exceeding the allowable current can
cause electric shock or fire.
Do not modify the power cables, use extension cables, or use any branches in the wiring.
Improper connections, insufficient insulation, or exceeding the allowable current can cause
electric shock or fire.
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 fire.
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 fire.
Always connect the ground (earth) cable.
Improper grounding (earthing) 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 oper-
ated safely and positively.
Connect the connection cable firmly to the terminal board. Imperfect installation may cause
a fire.
If the supply cable is damaged, it must be replaced by the manufacturer, its service agent
or similarly qualified persons in order to avoid a hazard.
En-11
Unit: in (mm)
2 (50.8)
or more
Anti-siphon
air vent
Vent T
Drain trap
CAUTION
WARNING
Ground (Earth) the unit.
Do not connect the ground (earth) cable to a gas pipe, water pipe, lightning rod, or a
telephone ground (earth) cable.
Improper grounding (earthing) 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 ground (earth) 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.

5.1. Electrical requirement

Voltage rating
Operating range
• Select the power cable type and size in accordance with relevant local and national regula-
tions.
• Specifications for local wiring power cord and branch wiring are in compliance with local
code.
• Select the correct cable type and size according to the country or region's regulations.
• Max. wire length: Set a length so that the voltage drop is less than 2%. Increase the wire
diameter when the wire length is long.
Breaker should be installed at every refrigerant system. Do not use a breaker in a different
refrigerant system.
Refer to the table for the breaker specifications of each installation condition. Perform the
power crossover wiring within the range of the same refrigerant system. When the crossover
wiring is done, make a connection for indoor units to satisfy conditions A and B below.
A. Current breaker requirements
MAX. CKT. BKR
Model MCA
(Fuse capacity)
ARUX12TLAV2 1.54 A
ARUX18TLAV2 1.73 A
ARUX24TLAV2 2.38 A
ARUX30TLAV2 3.29 A 15 A
ARUX36TLAV2 4.05 A
ARUX48TLAV2 5.15 A
ARUX60TLAV2 5.88 A
Select a minimum of 7 or more multiples of rated current under the condition time in seconds
10 ms (0.01 S) or less at the current breaker trip curves (time in seconds/multiples of rated
current).
B. Ground Fault Equipment Breaker requirements
Breaker capacity
30 mA, 0.1 sec or less
100 mA, 0.1 sec or less
*1: Number of connected Heat pump type
*2: If the 100 mA capacity breaker is not provided, split the quantity of the indoor units into
small groups of 9 units or less and provide a breaker with capacity of 30 mA for each
group.
When connecting different models on the above listed breaker in conjunction with the
ARUX12/18/24/30/36/48/60TLAV2, you might be able to connect more than 9 units. To de-
termine the maximum amount of indoor units when using different models or Heat recovery
type, reference each units Design & Technical manual to calculate the total amount of units
that can be connected on a given breaker.
5.1.1 Transmission and remote controller wiring specifi cations
Follow the specifications below for the transmission and remote controller cable.
Cable size
Transmission 22 AWG
cable (0.33 mm²)
22 AWG to 16 AWG
Remote
(0.33 to 1.25 mm²)
controller cable
(2-wire type
18 AWG
only)
CAUTION
208 / 230 V
187 to 253 V
MCA: Minimum Circuit Ampacity
MAX. CKT. BKR : Maximum Circuit
Breaker
Breaker should be installed at every
refrigerant system. Do not use a breaker
in a different refrigerant system.
With this model, connect only one indoor
unit to a current breaker. (Crossover wir-
ing is prohibited.)
Maximum connectable indoor units (*1)
(ARUX12/18/24/30/36/48/60TLAV2 model only)
9 or less
10 to 30 (*2)
Wire type Remarks
LEVEL 4 (NEMA)
non-polar 2core,
LONWORKS ® compatible
twisted pair solid core
cable
diameter 0.026 in
(0.65mm)
Non polar 2 core, twisted
Sheathed PVC cable
pair
Thermostat cable Use sheathed non twisted
2 core pair cable