Daikin FAQ24TAVJU, FAQ18TAVJU User Manual

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SPLIT SYSTEM Air Conditioners
MODELS
Wall-mounted type
FAQ18TAVJU FAQ24TAVJU
INSTALLATION MANUAL
Lire soigneusement ces instructions avant l’installation. Conserver ce manuel à portée de main pour référence ultérieure. Ce manuel doit être donné au propriétaire de l’équipement.
Lea cuidadosamente estas instrucciones antes de instalar. Guarde este manual en un lugar a mano para leer en caso de tener alguna duda. Este manual debe permanecer con el propietario del equipo.
English
Français
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SPLIT SYSTEM Air Conditioners Installation manual
CONTENTS
1. SAFETY CONSIDERATIONS ........................................ 1
2. BEFORE INSTALLATION .............................................. 3
3. SELECTING INSTALLATION SITE................................ 4
4. INDOOR UNIT INSTALLATION ..................................... 5
5. REFRIGERANT PIPING WORK .................................... 8
6. DRAIN PIPING WORK .................................................. 9
7. ELECTRIC WIRING WORK ......................................... 10
8. WIRING EXAMPLE AND HOW TO SET
THE REMOTE CONTROLLER .................................... 11
9. FIELD SETTING .......................................................... 14
10. TEST OPERATION ...................................................... 15

1. SAFETY CONSIDERATIONS

Read these SAFETY CONSIDERATIONS for Installation carefully before installing air conditioning equipment. After completing the installation, make sure that the unit operates properly during the startup operation. Instruct the customer on how to operate and maintain the unit. Inform customers that they should store this Installation Manual with the Operation Manual for future reference. Always use a licensed installer or contractor to install this product. Improper installation can result in water or refriger-
ant leakage, electrical shock, re, or explosion.
Meanings of DANGER, WARNING, CAUTION, and NOTE Symbols:
DANGER
WARNING
CAUTION
NOTE
................ Indicates an imminently haz-
ardous situation which, if not avoided, will result in death or serious injury.
.............. Indicates a potentially haz-
ardous situation which, if not avoided, could result in death or serious injury.
............... Indicates a potentially haz-
ardous situation which, if not avoided, may result in minor or moderate injury. It may also be used to alert against unsafe practices.
....................... Indicates situations that may
result in equipment or prop­erty damage accidents only.
DANGER
• Refrigerant gas is heavier than air and replaces oxy-
gen. A massive leak can lead to oxygen depletion, especially in basements, and an asphyxiation hazard could occur leading to serious injury or death.
• Do not ground units to water pipes, gas pipes, tele-
phone wires, or lightning rods as incomplete ground­ing can cause a severe shock hazard resulting in severe injury or death. Additionally, grounding to gas pipes could cause a gas leak and potential explosion causing severe injury or death.
• If refrigerant gas leaks during installation, ventilate
the area immediately. Refrigerant gas may produce
toxic gas if it comes in contact with re. Exposure to
this gas could cause severe injury or death.
• After completing the installation work, check that the
refrigerant gas does not leak throughout the system.
Do not install unit in an area where ammable materi-
als are present due to risk of explosions that can cause serious injury or death.
• Safely dispose of all packing and transportation
materials in accordance with federal/state/local laws or ordinances. Packing materials such as nails and other metal or wood parts, including plastic packing materials used for transportation, may cause injuries or death by suffocation.
WARNING
Only qualied personnel must carry out the installa-
tion work. Installation must be done in accordance with this installation manual. Improper installation
may result in water leakage, electric shock, or re.
• When installing the unit in a small room, take mea-
sures to keep the refrigerant concentration from exceeding allowable safety limits. Excessive refriger­ant leaks, in the event of an accident in a closed
ambient space, can lead to oxygen deciency.
• Use only specied accessories and parts for installa-
tion work. Failure to use specied parts may result in water leakage, electric shocks, re, or the unit falling.
• Install the air conditioner on a foundation strong
enough that it can withstand the weight of the unit. A
foundation of insufcient strength may result in the
unit falling and causing injuries.
• Take into account strong winds, typhoons, or earth-
quakes when installing. Improper installation may result in the unit falling and causing accidents.
• Make sure that a separate power supply circuit is
provided for this unit and that all electrical work is
carried out by qualied personnel according to local, state and national regulations. An insufcient power
supply capacity or improper electrical construction
may lead to electric shocks or re.
Make sure that all wiring is secured, that specied
wires are used, and that no external forces act on the terminal connections or wires. Improper connections
or installation may result in re.
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• When wiring, position the wires so that the control
box cover can be securely fastened. Improper posi­tioning of the control box cover may result in electric
shocks, re, or the terminals overheating.
• Before touching electrical parts, turn off the unit.
• This equipment can be installed with a Ground-Fault
Circuit Interrupter (GFCI). Although this is a recog­nized measure for additional protection, with the grounding system in North America, a dedicated GFCI is not necessary.
• When installing or relocating the system, keep the
refrigerant circuit free from substances other than the specied refrigerant (R410A) such as air. Any pres­ence of air or other foreign substance in the refriger­ant circuit can cause an abnormal pressure rise or rupture, resulting in injury.
• Do not change the setting of the protection devices. If
the pressure switch, thermal switch, or other protec­tion device is shorted and operated forcibly, or parts
other than those specied by Daikin are used, re or
explosion may occur.
CAUTION
Do not touch the switch with wet ngers. Touching a
switch with wet ngers can cause electric shock.
• Do not allow children to play on or around the unit to
prevent injury.
• Do not touch the refrigerant pipes during and immedi-
ately after operation as the refrigerant pipes may be hot or cold, depending on the condition of the refrig­erant owing through the refrigerant piping, compres­sor, and other refrigerant cycle parts. Your hands may suffer burns or frostbite if you touch the refrigerant pipes. To avoid injury, give the pipes time to return to normal temperature or, if you must touch them, be sure to wear proper gloves.
Heat exchanger ns are sharp enough to cut. To avoid
injury, wear glove or cover the ns when working
around them.
• Install drain piping to proper drainage. Improper drain
piping may result in water leakage and property dam­age.
• Insulate piping to prevent condensation.
• Be careful when transporting the product.
• Do not turn off the power supply immediately after
stopping operation. Always wait for at least 5 minutes before turning off the power supply. Otherwise, water leakage may occur.
• Do not use a charging cylinder. Using a charging
cylinder may cause the refrigerant to deteriorate.
Refrigerant R410A in the system must be kept clean,
dry, and tight. (a) Clean and Dry -- Foreign materials (including
mineral oils such as SUNISO oil or moisture) should be prevented from getting into the system.
(b)
Tight -- R410A does not contain any chlorine, does
not destroy the ozone layer, and does not reduce the earth’s protection again harmful ultraviolet radiation.
R410A can contribute to the greenhouse effect if it is
released. Therefore take proper measures to check for the tightness of the refrigerant piping installation. Read the chapter REFRIGERANT PIPING WORK and follow the procedures.
Since R410A is a blend, the required additional refrig-
erant must be charged in its liquid state. If the refriger­ant is charged in a gaseous state, its composition can change and the system will not work properly.
The indoor unit is for R410A. See the catalog for
indoor models that can be connected. Normal opera­tion is not possible when connected to other units.
• Handheld remote controller transmitting distance can
be shorter than expected in rooms with electronic
uorescent lamps (inverter or rapid start types). Install the indoor unit far away from uorescent lamps as
much as possible.
• Indoor units are for indoor installation only. Outdoor
units can be installed either outdoors or indoors.
• Do not install the air conditioner in the following
locations: (a) Where a mineral oil mist or oil spray or vapor is
produced, for example, in a kitchen. Plastic parts may deteriorate and fall off or result in water leakage.
(b) Where corrosive gas, such as sulfurous acid gas,
is produced. Corroding copper pipes or soldered parts may result in refrigerant leakage.
(c) Near machinery emitting electromagnetic waves.
Electromagnetic waves may disturb the operation of the control system and cause the unit to mal­function.
(d) Where ammable gas may leak, where there is
carbon ber, or ignitable dust suspension in the air, or where volatile ammables such as thinner
or gasoline are handled. Operating the unit in
such conditions can cause a re.
NOTE
• Install the power supply and control wires for the
indoor and outdoor units at least 3.5 feet (1.0m) away
from televisions or radios to prevent image interfer­ence or noise. Depending on the radio waves, a dis-
tance of 3.5 feet (1.0m) may not be sufcient to
eliminate the noise.
• Dismantling the unit, treatment of the refrigerant, oil
and additional parts must be done in accordance with the relevant local, state, and national regulations.
• Do not use the following tools that are used with
conventional refrigerants: gauge manifold, charge
hose, gas leak detector, reverse ow check valve,
refrigerant charge base, vacuum gauge, or refrigerant recovery equipment.
• If the conventional refrigerant and refrigerator oil are
mixed in R410A, the refrigerant may deteriorate.
• This air conditioner is an appliance that should not be
accessible to the general public.
As design pressure is 478 psi (3.3MPa), the wall
thickness of eld-installed pipes should be selected in
accordance with the relevant local, state, and national regulations.
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2. BEFORE INSTALLATION

• When unpacking the unit or moving the unit after
unpacked, be sure to lift it by the four hanger brack­ets. Avoid putting any pressure on other parts-hori-
zontal aps, the refrigerant piping, drain piping, and
other resin parts.
Be sure to remove a cushion (corrugated paper) located between the heat exchanger and the right air lter.
• Be sure to check the type of R410A refrigerant to be used before installing the unit. (Using an incorrect refrigerant will prevent normal operation of the unit.)
• The accessories needed for installation must be retained in your custody until the installation work is completed. Do not discard them!
• Decide upon a line of transport.
• Leave the unit inside its packaging while moving, until reaching the installation site. Where unpacking is unavoid­able, use a sling of soft material or protective plates together with a rope when lifting, to avoid damage or scratches to the unit.
• For the installation of an outdoor unit, refer to the installa- tion manual attached to the outdoor unit.
• When using the wireless remote controller, refer to the installation manual attached to the wireless remote con­troller.
• Do not install or operate the unit in rooms mentioned below.
Laden with mineral oil, or lled with oil vapor or
spray like in kitchens. (Plastic parts may deteriorate which could eventually cause the unit to fall out of place, or could lead to leaks.)
• Where corrosive gas like sulfurous gas exists.
(Copper tubing and brazed spots may corrode which could eventually lead to refrigerant leaks.)
• Where exposed to combustible gases and where
volatile ammable gas like thinner or gasoline is
used. (Gas in the vicinity of the unit could ignite.)
• Where machines can generate electromagnetic
waves. (Control system may malfunction.)
• Where the air contains high levels of salt such as
that near the ocean and where voltage uctuates
greatly such as that in factories, vehicles or vessels.
• This unit, both indoor and outdoor, is suitable for installa- tion in a commercial and light industrial environment. If installed as a household appliance it could cause electro­magnetic interference.
2-1 ACCESSORIES
Check if the following accessories are attached to the indoor unit.
Name (1) Installation panel
Quantity 1 pc. 9 pcs.
Shape
Name
Quantity 1 pc. 1 pc. 1 large 4 small
Shape
Name
Quantity 2 pcs.
(3) Paper pattern
for installation
(6) Securing
screw
(2) Attachment screw
for the installation panel
(4) Insulating
tape
(7) Insulating
tube
1 long
1 short
M4 × 25L
(5) Clamp
(Other)
• Operation
manual
• Installation
manual
Shape
• Warranty
card
M4 × 12L
2-2 OPTIONAL ACCESSORIES
Remote controller Model
Wired type BRC1E73
Wireless type BRC7E818
WARNING
• Entrust installation to the place of purchase or an autho- rized serviceman. Improper installation could lead to leaks
and, in worse cases, electric shock of re.
• Use of unspecied parts could lead to the unit falling, leaks and, in worse cases, electric shock or re.
NOTE
• Be sure to read this manual before installing the indoor unit.
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FOR THE FOLLOWING ITEMS, TAKE
[ Space required for installation [in. (mm)] ]
SPECIAL CARE DURING CONSTRUCTION AND CHECK AFTER INSTALLATION IS FINISHED.
(1) Items to be checked after completion of work
Items to be checked
Are the indoor and outdoor
units xed rmly?
Is the gas leak test n­ished?
Is the unit fully insulated?
Does drainage ow smoothly?
Does the power supply voltage correspond to that
shown on the name plate?
Are wiring and piping
correct?
Is the unit safely
grounded?
Is wiring size according to
specications?
Is something blocking the air outlet or inlet of either
the indoor or outdoor unit?
Are refrigerant piping length and additional refrigerant charge noted
down?
Did you check that no wiring connection screws
were loose?
If not properly done, what is likely to occur
The units may drop, vibrate or make noise.
It may result in insufcient
cooling or heating.
Condensate water may drip.
Condensate water may drip.
The unit may malfunction or the components may burn out.
The unit may malfunction or the components may burn out.
It may be dangerous at electric leakage.
The unit may malfunction or the components burn out.
It may result in insufcient
cooling.
The refrigerant charge in the system is not clear.
Electric shock or re.
Check
• Where the wall is strong enough to bear the indoor
unit weight.
• Where sufcient clearance for installation and mainte-
nance can be ensured.
(Refer to Fig. 1 and Fig. 2)
• Where optimum air distribution can be ensured.
• Where nothing blocks the air passage.
• Where condensate can be properly drained.
• Where the wall is not signicantly tilted.
• Where piping between indoor and outdoor unit is
possible within the allowable limit. (Refer to the installation manual of the outdoor unit.)
• Install the indoor and outdoor units power supply
wiring and connecting wires at least 3.5ft. (1m) away
from televisions or radios in order to prevent image interference or noise.
(Depending on the radio waves, a distance of 3.5ft. (1m) may not be sufcient enough to eliminate the
noise.)
• Where the cool (warm) air reaches all across the
room.
2 (50) 2 (50)
Fig. 1
Also review the “SAFETY CONSIDERATIONS”
(2) Items to be checked at delivery
Items to be checked Check
Did you explain how to operate the unit while showing the operation manual to your customer?
Did you give the operation manual over to your cus-
tomer?
2-3 NOTE TO THE INSTALLER
Be sure to instruct customers how to properly operate the
unit (especially cleaning lters, operating different functions,
and adjusting the temperature) by having them carry out operations themselves while looking at the manual.

3. SELECTING INSTALLATION SITE

(1) Select an installation site where the following condi-
tions are fullled and has the customer’s approval.
Where there will be no possible dripping of water from the refrigerant pipe, drain pipe, etc., in the area between the unit and ceiling, and in the attic just above the unit.
English
3-1/2 (90)
Obstruction
4-3/4 (120)
1-1/4 (30)
100 (2500)
(from floor)
For installation in high places.
Floor
Fig. 2
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(2) Consider whether the place where the unit will be
installed can support the full weight of the unit, and reinforce it with boards and beams, etc. if needed before proceeding with the installation. Also, rein­force the area to prevent vibration and noise before installing. (The installation pitch can be found on the paper pattern for installation (3), so refer to it when consid­ering the necessity for reinforcing the location.)
(3) The indoor unit may not be directly installed on the
wall. Use the attached installation panel (1) before installing the unit.
DANGER
• Do not install unit in an area where ammable materials are present due to risk of explosion resulting in serious
injury or death.
WARNING
• If the supporting structural members are not strong enough to take the unit’s weight, the unit could fall out of place and cause serious injury.
(c) Secure the installation panel (1) to the wall using
either screws or bolts.
• If using the attachment screws for the installation
panel (2), attach using at least 4 screws on either side, for a total of 9 screws of the recommended installation cleat position on the included paper pattern for installation (3).
• If using bolts, attach using a M8 - M10 bolt or
equivalent (for a total of 2 bolts) on either side.
• If dealing with concrete, use commercially avail-
able foundation bolts (M8 - M10 or equivalent).
(3) If using the left, bottom-left, or bottom-right posi-
tions for the piping, cut out the through-hole for the
piping in the front grille. (Refer to Fig. 4)
Left pipe
Back-left pipe
Bottom-left pipe

4. INDOOR UNIT INSTALLATION

Use only accessories and parts which are of the desig- nated specication when installing.
CAUTION
• Install so that the unit does not tilt to either side or forward.
• Do not hold the unit by the horizontal aps when lifting it.
(This may damage the horizontal aps.)
(1) Open the piping through-hole.
• The refrigerant pipe and drain pipe can be routed out
in one of 5 directions: left, bottom-left, back-left, bottom-right, and back-right. (Refer to Fig. 3)
• Using the paper pattern for installation (3), choose
where to route the piping out of the unit, and drill a through-hole (f3-1/8” (f80)) in the wall. Open the hole so that there is a downward slope for the drain piping. (See “6. DRAIN PIPING WORK”)
(2) Attach the installation panel (1) to the wall.
(a) Check the location for the hole using the included
paper pattern for installation (3).
• Choose a location so that there is at least a 3-5/8”
(90 mm) gap between the ceiling and the main unit.
(b) Temporarily attach the installation panel (1) at the
temporary-securing position on the paper pattern for installation (3) and use a level to make sure the drain hose is either level or tilted slightly downward.
Back-right pipe
Bottom-right pipe
Fig. 3
Front grille
Cut out along the groove.
Cut away
Fig. 4
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(4) Remove the front panel and the control box cover.
Insulating tape (4)
Ta b
(Refer to Fig. 5) < How to remove the front panel and control box cover >
(1) Open the front panel by lifting from the bottom to the
point where it stops.
(2) Push the panel spacers on either side of the front
panel towards the center of the main unit and remove. (You can also remove it by sliding the front panel either to the left or right and pulling it forward.)
(3) Remove the screw from the control box cover and
pull the tab forward.
Panel spacer
(2) (2)
Panel spacer
Fig. 5
Front panel
(1)
Panel spacer
Control box cover
(3)
Ta b
Screw
(5) Point the pipe in the direction it will be routed out of
the unit. For bottom-right and back-right piping (Refer to Fig. 6)
• Wrap the drain hose and the refrigerant piping
together with the insulating tape (4) so that the drain hose is below the refrigerant piping.
Refrigerant piping
Tab position Tab position
(3)
(3) (3)
Screw position
(2)
Screw position
Front grille
(4)
(2) (2)
Fig. 7
• Remove the drain plug, the insulating tube, and the drain
hose from the drain pan and replace.
(Refer to Fig. 8)
• Connect the eld refrigerant piping ahead of time, match-
ing it to the liquid pipe and gas pipe marks engraved on the installation panel (accessory) (1).
< Replacing the drain hose and drain plug >
(1) Remove the drain plug and insulating tube. (2) Remove the drain hose and replace onto the left side. (3) Replace the drain plug and the insulating tube onto the
right side.
Insulating tube
Make sure there are no gaps.
Fig. 8
Insert using a hexagon wrench (5/32 in. (4 mm)).
Drain plug
Do not place lubricant (refrigerant oil) when inserting. This may cause deterioration and water leaks.
Fig. 6
Drain hose
For left, bottom-left, and back-left piping
• Remove the front grille. (Refer to Fig. 7)
< How to remove the front grille >
Remove the front grille as described below when secur­ing the indoor unit with screws or when attaching Optional Accessories (wireless remote controller, adapter PC board, etc.).
(1) Remove the front panel.
(2) Remove the screws (3 places) securing the front
grille.
(3) Remove the tabs (3 places) securing the front grille
by pushing them in the direction of the arrows.
(4) Making sure not to catch the horizontal aps, remove
the front grille by pulling in the direction of the arrow.
(6) Hook the indoor unit onto the installation panel.
(Refer to Fig. 9)
• Placing buffering material between the wall and the
indoor unit at this time will make work easier.
Hook the indoor unit hook onto
Control box cover
Front panel Front grille
Be sure to pass all wires through the wiring guide.
Refrigerant piping
(There are 2 places.)
Wiring (locally procured)
Transmission wiring, Remote controller wiring
the installation panel (1).
Ta b
Fig. 9
Place buffering material
Wall
Power supply wiring, Ground wiring
Conduit
Installation panel (accessory) (1)
For bottom-right and back-right piping
• Pass the drain hose and the refrigerant piping to the
wall.
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(7) Pass power supply wiring from conduit and control
wiring through the wiring guide in the back of the unit, to the front of the unit. (For connecting the
power supply wiring to the unit, see “8-1 HOW TO
CONNECT WIRINGS”)
(8) Connect the piping. (See “5. REFRIGERANT PIPING
WORK” and Fig. 10)
Secure with vinyl tape.
Drain hose
(9) Push on both bottom edges of the indoor unit using
both hands and hook the tab on the back of the indoor unit onto the installation panel (1). (Refer to Fig. 9)
• At this time remove the buffering material placed in
step (6).
• Make sure power supply wiring, transmission wiring,
ground wiring and remote controller wiring are not caught inside the indoor unit.
 When screwing in the indoor unit
• Remove the front grille. (Refer to Fig. 7)
• Secure the indoor unit to the installation panel (1) with
the securing screws (6). (Refer to Fig. 11)
Installation panel (accessory) (1)
Transmission wiring and remote controller wiring
Seal with putty corking material.
Refrigerant piping
Transmission wiring and remote controller wiring
A arrow view
Refrigerant piping
Conduit
Wrap the insulating tape overlapping at least half the width with each wrap. Wrap the insulating tape all the way to the L-shaped bend.
Fig. 10
• Seal the piping through-hole with putty corking mate-
rial.
A
Fig. 11
Refrigerant piping
Insulating tape (accessory) (4)
M4 × 12L (accessory) (6)
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5. REFRIGERANT PIPING WORK

Torque wrench
Coat the flared inner surface only
For refrigerant piping of outdoor unit, see the installa­tion manual attached to the outdoor unit. Execute thermal insulation work completely on both sides of the gas piping and the liquid piping. Otherwise, a water leak can occur.
(When using a heat pump, the temperature of the gas piping
can reach up to approximately 250°F (120°C), so use insula­tion which is sufciently resistant.)
Also, in cases where the temperature and humidity of
the refrigerant piping sections might exceed 86°F (30°C) or RH80 %, reinforce thermal insulation (13/16 (20mm) or
thicker) for the refrigerant piping. Condensation may form on the surface of the insulating material. Before refrigerant piping work, check which type of refrigerant is used. Proper operation is not possible if the type of refrigerant is not the same.
DANGER
• Refrigerant gas may produce toxic gas if it comes in contact with re such as from a fan, heater, stove or cooking device. Exposure to this gas could result in severe
injury or death.
with ester oil or ether oil
Fig. 13
CAUTION
• Use the are nut included with the unit.
• Refer to Table 1 for the corresponding tightening torque.
Table 1
Piping
size
[in. (mm)]
f 3/8 (9.5)
f 5/8
(15.9)
Tightening
torque
[lbf·ft. (N·m)]
24.1 – 29.4 (36.3±3.6)
45.6 – 55.6 (68.6±6.8)
Dimension for
processing are
A [in. (mm)]
0.504 – 0.520 (13.0±0.2)
0.760 – 0.776 (19.5±0.2)
Flare shape
[in. (mm)]
45˚±2˚
A
90˚±2˚
R0.016-0.031
(0.4-0.8)
NOTE
• Use a pipe cutter and a aring tool suitable for the type of
refrigerant.
• To prevent dust, moisture or other foreign matter from
inltrating the tube, either pinch the end or cover it with
tape.
• Do not allow anything other than the designated refriger-
ant to get mixed into the refrigerant circuit, such as air, etc.
• If refrigerant gas leaks while working on the unit, ventilate
the room thoroughly right away.
• The refrigerant is pre-charged in the outdoor unit.
• Use copper alloy seamless pipes.
• Be sure to use both a spanner and a torque wrench
together, when connecting or disconnecting pipes to/from the unit. (Refer to Fig. 12)
• Refer to “Table 1” for the dimensions of are.
• When connecting the are nut, coat the ared inner sur-
face only with ester oil or ether oil, rotate three or four times rst, then screw in.
(Refer to Fig. 13)
Spanner
CAUTION
Do not excessively tighten the are nut.
Doing so will break the are nut and refrigerant leakage
may occur.
Make sure that all parts around the are are free of oil.
The drain pan and the resin part may be deteriorated if oil is attached.
CAUTION
• Do not use ux when brazing refrigerant piping. Therefore, use the phosphor copper brazing lter metal (BCuP) which does not require ux. (Flux has an extremely negative effect on refrigerant piping systems. For instance, if chlorine based ux is used, it will cause pipe corrosion. If the ux contains uorine, it will damage the refrigerant oil.)
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Union joint
Flare nut
Fig. 12
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• When brazing the refrigerant piping, carry out nitrogen
Refrigerant piping
Part to be brazed
Taping
Pressure-reducing valve
Hand valve
Nitrogen
Fig. 14
Nitrogen
Field piping
Clamp (large)
( See “4. INDOOR UNIT INSTALLATION” )
substitution (inserting nitrogen into the refrigerant piping to substitute air with nitrogen (refer to NOTE below)) and then begin brazing. Once this is done, connect the indoor
unit with a are connection.
CAUTION
• Be sure to insulate the eld piping all the way to the piping connection inside the unit. Any exposed piping may cause
condensate or burns if touched.
• Use of oxygen may cause an explosion resulting in seri-
• Set nitrogen pressure to about 2.9 psi (0.02 Mpa) with a
• After checking for gas leaks, be sure to insulate the pipe
DANGER
ous injury or death. Only use nitrogen gas.
NOTE
pressure-reducing valve if brazing while inserting nitrogen into the piping. (Refer to Fig. 14)
connections using the piping insulating tube and insulating tape (4). The insulating tape (4) should be wrapped from the L-shaped bend all the way to the end inside the unit.
(Refer to Fig. 15)
Tape of insulating tube
Indoor unit piping
Indoor unit piping insulating tube
(accessory) (5)
Tape of insulating tube
Insulating tape (accessory) (4)
See “ 4. INDOOR UNIT INSTALLATION ”
Start wrapping
L-shaped bend

6. DRAIN PIPING WORK

(1) Install the drain piping. (Refer to Fig. 16)
• The drain pipe should be short with a downward slope
and should prevent air pockets from forming.
• Watch out for the points in Fig. 16 when performing
drain work.
Make sure the drain hose is at a downward slope.
Make sure the tip is not under water even
when flooding.
Drain hose Drain hose
(Downward slope)
Fig. 16
• When extending the drain hose, use a commercially available drain hose for extension, and be sure to insulate the extended section of the drain hose which
is indoors. (Refer to Fig. 17)
Insulating tube (field supply)
Drain hose for extension
(field supply)
Indoor unit drain hose
Indoor unit piping insulating tube
Tape of insulating tube
Seam of Insulating tube
Attach the tape of insulating tube so that there are no gaps in the seam of insulating tube.
Fig. 15
9
Insulating tape (accessory) (4)
Fig. 17
• Make sure the diameter of the drain hose for exten- sion is the same as the indoor unit drain hose (hard vinyl chloride, I.D. 1/2 in. (13 mm)) or larger.
• In case of converging multiple drain hoses, install them referring to Fig. 18.
• Select diameter of drain hose which adapts to the capacity of the unit connected.
English
Page 11
4 in. (100 mm)
or more
Fig. 18
(Slope of at least 1/100)
(2) Make sure the drain piping works properly.
• After drain piping work is complete, perform a drain-
age check by opening the front panel, removing the air lter, pouring water into the drain pan, and making sure water ows smoothly out of the drain hose.
(Refer to Fig. 19)
Plastic container for pouring
Drain pan
Fig. 19
Make sure not to splash the water.
DANGER
• Do not ground units to water pipes, telephone wires or
lightning rods because incomplete grounding could cause a severe shock hazard resulting in severe injury or death, and to gas pipes because a gas leak could result in an
explosion which could lead to severe injury or death.
7-2 ELECTRICAL CHARACTERISTICS
Units Power supply Fan motor
Model Hz Volts
FAQ18TAVJU
FAQ24TAVJU
60 208/230
Voltage
range
Max. 253
Min. 187
MCA MOP W FLA
0.5 15 43 0.4
0.6 15 43 0.5
MCA: Minimum Circuit Ampacity (A)
MOP: Maximum Overcurrent Protective Device (A)
W: Fan Motor Rated Output (W) FLA: Full Load Ampere (A)
7-3 SPECIFICATIONS FOR FIELD SUPPLIED
FUSES AND WIRE
CAUTION
• Drain piping connections
Do not connect the drain piping directly to sewage pipes that smell of ammonia. The ammonia in the sewage might enter the indoor unit through the drain piping and corrode the heat exchanger. Keep in mind that it will block the drain pipe and cause water to collect.

7. ELECTRIC WIRING WORK

7-1 GENERAL INSTRUCTIONS
• All eld supplied parts and materials and electric works
must conform to local codes.
• Use copper wire only.
• For electric wiring work, refer to also “WIRING DIAGRAM”
attached to the unit.
• For details of remote controller wiring, refer to the installa-
tion manual attached to the remote controller.
• All wiring must be performed by an authorized electrician.
• A circuit breaker capable of shutting down power supply to
the entire system must be installed.
• Refer to the installation manual attached to the outdoor
unit for the size of power supply wiring connected to the outdoor unit, the capacity of the circuit breaker and switch, and wiring instructions.
• Be sure to ground the air conditioner.
Remote controller wiring
Transmission wiring
2-conductor,
stranded non-shielded copper cable
PVC/vinyl
jacket
(NOTE)
AWG18-16
(0.75-
1.25 mm
2
Model
FAQ18TAVJU
FAQ24TAVJU
Power supply wiring
Fuse
Size Wire Size
Wiring size and length
15A
must
comply
with local
codes.
Allowable lengths of transmission wiring and remote controller wiring are as follows. (1) Outdoor unit – Indoor unit:
Max. 3280 ft (1,000 m)
(2) Indoor unit – Remote controller:
Max. 1640 ft (500 m)
NOTE
Vinyl cord with sheath or cable (Insulated thickness : 1/16in. (1 mm) or more)
)
English
10
Page 12
8. WIRING EXAMPLE AND HOW TO SET
Conduit
Transmission
Insulating tube (short)
THE REMOTE CONTROLLER
8-1 HOW TO CONNECT WIRINGS
• Conduit for power supply wiring
Unscrew and remove the conduit mounting plate from the
control box. (Refer to Fig. 20) Fix a conduit to the plate with a lock nut and reattach them
at original position.
(accessory) (7)
Insulating tube (long) (accessory) (7)
Clamp (small) (accessory) (5)
(1 in. (25 mm))
Clamp (small) (accessory) (5)
Powe r supply wiring
Ground wiring
wiring
Control box
• Power supply wiring and ground wiring Unscrew and remove the control box cover.
Thread the power supply wiring and ground wiring through the included insulating tube (short) (7) and secure them with the included clamp (small) (5). (Refer to Fig. 21) Connect the power supply wiring and ground wiring to the power supply terminal block (3P).
When doing this, rmly secure using the included clamp (small) (5) according to the gure.
(Refer to Fig. 22)
• Transmission wiring and remote controller wiring Unscrew and remove the control box cover.
Thread the remote controller wiring and transmission wiring through the included insulating tube (long) (7) and secure them with the included clamp (small) (5).
(Refer to Fig. 21)
Connect the remote controller wiring and the transmission wiring to the terminal block (6P). When doing this, tie the remote controller wiring and the transmission wiring using the included clamp (small) (5)
and then rmly secure using the included clamp (small) (5) according to the gure.
(Refer to Fig. 22)
Screw
<Back side>
<Front side>
Lock nut
Conduit mounting plate
Refrigerant piping
Fig. 20
Power supply terminal block (3P)
Ground terminal
Ground wiring
Clamp (small) (accessory) (5)
(3 places)
Cut off any excess material after tightening.
Power supply wiring
Remote controller wiring and transmission wiring
Terminal block (6P)
<
Wiring clamp method
Clamp (small) (accessory) (5)
Insulating tube
Remote controller wiring
(1 in. (25 mm))
Fig. 21
L1
>
Power supply wiring
Ground wiring
Transmission wiring
REMOTE
CNTRL
Remote controller wiring
L2
F1 F2 T1 T2P1 P2
FORCED
TRANSMISSION
WIRING
OFF
11
Clamp (small) (accessory) (5)
Insulating tube
Fig. 22
English
Page 13
WARNING
Attach insulation sleeve
• Never connect power supply wiring to the terminal block
for remote controller wiring as this could damage the entire system.
• Use only specied wire and connect wires to the terminal
tightly. Be careful wires do not place external stress on
terminals. Keep wires in neat order so as not to obstruct
other equipment. Make sure that the control box cover ts
tightly. Incomplete connections could result in overheating
and, in worse case, result in electric shock or re.
• To avoid a short circuit in the control box, be sure to apply
sealing material or putty (not included) to the wiring hole
to prevent the inltration of water as well as insects or
other small creatures. Otherwise a short-circuit may occur
inside the control box.
2. Tightening torque for the terminal screws.
• Use the correct screwdriver for tightening the terminal
screws. If the blade of screwdriver is too small, the head of the screw might be damaged, and the screw will not be properly tightened.
• If the terminal screws are tightened too hard, screws
might be damaged.
• Refer to the table below for the tightening torque of
the terminal screws.
Terminal Size
Remote controller, Transmission wiring and Forced off terminal block (6P)
Power supply and Ground terminal block (3P)
M3.5
Tightening torque
M4
[lbf·ft. (N·m)]
0.59 – 0.71
(0.80 – 0.96)
0.89 – 1.03 (1.2 – 1.4)
CAUTION
• When clamping the wirings, be sure no tension is applied
to the wire connections by using the included clamp. Also,
when wiring, make sure the cover on the control box ts
snugly by arranging the wirings neatly and attaching the
control box cover rmly. When attaching the control box
cover, make sure no wirings get caught in the edges. Pass wiring through holes to prevent damage to them.
• Make sure the remote controller wiring and transmission
wiring between the units, and other electrical wiring do not pass through the same locations outside the unit, separat­ing them by at least 2 in. (50 mm), otherwise electrical
noise (external static) could cause incorrect operation or
breakage.
[ PRECAUTIONS ]
1. Use round crimp-style terminals for connecting wires to
the power supply terminal block.
(Refer to Fig. 23)
If unavailable, observe the following points when wiring.
• Do not connect wires of different gauge to the same
power supply terminal. (Looseness in the connection may cause overheat­ing.)
• Use the specied electric wire. Connect the wire
securely to the terminal. Lock the wire down without
applying excessive force to the terminal.
3. Do not connect wires of different gauge to the same ground terminal. Looseness in the connection may lessen protection.
4. Keep transmission wiring at least 2 in. (50 mm) away from power supply wiring. The equipment may malfunc-
tion if subjected to electrical (external) noise.
5. For remote controller wiring, refer to the installation manual attached to the remote controller.
8-2 WIRING EXAMPLE
COMPLETE SYSTEM EXAMPLE
Power supply
Main switch
Outdoor unit
Indoor unit
Remote controller
Fig. 24
Power supply wire
Transmission wire
Disconnect switch Fuse/Breaker
Round crimp-style terminal
English
Electric wire
Fig. 23
12
Page 14
1. When using 1 remote controller (Normal operation)
Power Supply
T
F
208/230V
1~ 60Hz
L1L2
Outdoor unit
L1L
Indoor unit
Control box
IN/D OUT/D
F
1 F2 F1 F2
P1P
2
2
F1F2T1T
2
P1P
2
Remote
controller
Fig. 25
8-3 CONTROL BY 2 REMOTE
CONTROLLERS (Controlling 1 indoor unit by 2 remote controllers)
• When using 2 remote controllers, one must be set to
“MAIN” and the other to “SUB”.
Main/sub changeover
• Refer to the installation manual supplied with the remote
controller.
Wiring method
(1) Remove the control box cover. (2) Add the remote controller 2 (SUB) to the terminal block
for remote controller (P¹, P²) in the control box. (There is no polarity.)
1P2P1F2F1T2
REMOTE
CONTRL
TRANSMISSION
WIRING
FORCED
OFF
Remote controller wiring terminal block
2. When using 2 remote controllers
Power Supply
208/230V
1~ 60Hz
L1L2
Indoor unit
Outdoor unit
Control box
IN/D OUT/D
F
1 F2 F1 F2
P1P2F1F2T1T
L1L
2
P1P
2
For use with 2 remote controllers
2
P1P
2
Fig. 26
[ PRECAUTIONS ]
1. Do not ground the equipment on gas pipes, water pipes
or lightning rods, or crossground with telephones. Improper grounding could result in electric shock.
2. The remote controller wiring (P¹ and P²) and transmis- sion wiring (F¹ and F²) have no polarity.
Remote controller 1 (MAIN)
Remote controller 2 (SUB)
Fig. 27
8-4 REMOTE CONTROL (FORCED OFF AND ON/
OFF OPERATION)
• Connect input lines from the outside to the terminals T¹
and T² on the terminal block (6P) for remote controller to achieve remote control.
• See “9. FIELD SETTING” for details on operation.
1F2
P
1P2
REMOTE
TRANSMISSION
CONTRL
WIRING
Fig. 28
Wire specication Sheathed vinyl cord or 2 core cable
Gauge AWG18 – 16 (0.75-1.25 mm
Length Max. 328 ft. (100 m)
External terminal
Contact that can ensure the minimum applicable load of 15 V DC, 1 mA.
1T2
FORCED
OFF
T
Input A
2
)
13
8-5 CENTRALIZED CONTROL
• For centralized control, it is necessary to designate the
group No. For details, refer to the manual of each optional controllers for centralized control.
English
Page 15

9. FIELD SETTING

Field settings may have to be performed using the remote controller, depending on the type of installation.
(1) Make sure the control box covers are closed on the
indoor and outdoor units.
(2) Depending on the type of installation, make the eld
settings from the remote controller after the power is turned on, following the installation manual attached to the remote controller.
• The settings can select “Mode No.”, “FIRST CODE
NO.” and “SECOND CODE NO.”.
• The “Field Settings” included with the remote control-
ler lists the order of the settings and method of opera­tion.
FIELD SET MODE
Field Settings
Unit No.
0
0–01
–––
4
–––
8
FIRST CODE NO.
Mode
1–01
–––
5
–––
9
Setting
SECOND CODE NO.
20
2–02
–––
6
–––
a
3–01
–––
7
–––
b
Mode No.
9-2 SETTING AIRFLOW RATE INCREASE MODE
• It is possible to raise set airow (HIGH and LOW) from the eld. Change the SECOND CODE NO. as shown in Table3 to suit your needs.
(SECOND CODE NO. is factory set to “01” for Standard.)
Table 3
Setting Mode No.
Standard
A little increase 02
Increase 02
23 0
FIRST
CODE NO.
SECOND
CODE NO.
01
9-3 REMOTE CONTROL SETTING
• Forced off and ON/OFF operation should be selected by selecting the SECOND CODE NO. as shown in Table 4.
Table 4
External ON/OFF input Mode No.
Forced off
ON/OFF operation 02
* Factory set
22 1
FIRST
CODE NO.
• Input A of forced off and ON/OFF operation work as shown in Table 5.
SECOND
CODE NO.
01*
Fig. 29
• Lastly, make sure the customer keeps the installation
manual, along with the operating manual, in a safe place.
When using wireless remote controllers
• When using wireless remote controllers, wireless remote
controller address setting is necessary. Refer to the instal­lation manual attached to the wireless remote controller for setting instructions.
9-1 SETTING FILTER SIGN
• Remote controllers are equipped with display air lter signs to display the time to clean air lters.
• Change the SECOND CODE NO. according to Table 2 depending on the amount of dirt or dust in the room.
(SECOND CODE NO. is factory set to “01” for air lter
contamination-light)
Table 2
Setting
Air lter contami­nation-light
Air lter contami­nation-heavy
Spacing time of
display air lter
sign
Approx. 200hours
Approx. 100hours 02
Mode
No.
20 0
FIRST CODE
NO.
SECOND
CODE
NO.
01
Table 5
Forced off ON/OFF operation
Input A “on” to force a stop (remote controller reception prohibited)
Input A “off” to allow remote controller
Unit operated by changing input A from “off” to “on”
Unit stopped by changing input A from “on” to “off”
English
14
Page 16

10. TEST OPERATION

• The operation lamp of the remote controller will ash when
a malfunction occurs. Check the malfunction code on the
display to identify the point of trouble. An explanation of
malfunction codes and the corresponding trouble is pro­vided in “Service precautions” of the outdoor unit. If the display shows any of the following, there is a pos­sibility that the wiring was done incorrectly or that the power is not on, so check again.
Remote controller
display
“ A8 ”
“ U3 ”
“ U4 ”
“ UH ”
None
• Error in power supply voltage to indoor
unit.
• Test operation of outdoor unit has not
been nished.
• There is a short circuit at the FORCED
OFF terminals (T¹, T²)
• The power on the outdoor unit is off.
• The outdoor unit has not been wired for
power supply.
• Incorrect wiring for the transmission
wiring and / or FORCED OFF wiring.
• The power on the indoor unit is off.
• The indoor unit has not been wired for
power supply.
• Incorrect wiring for the remote controller
wiring, the transmission wiring and / or the FORCED OFF wiring.
Contents
CAUTION
• After the test operation is completed, check the items
mentioned in 2. BEFORE INSTALLATION (2) Items to be checked at delivery on page 4.
If the interior nish work is not completed when the test operation is nished, for protection of the air conditioner,
ask the customer not to operate the air conditioner until the interior nish work is completed. If the air conditioner is operated, the inside of the indoor unit may be polluted by substances generated from the
coating and adhesives used for the interior nish work and
cause water splash and leakage.
To the operator carrying out test operation
• After the test operation is completed, before delivering the air conditioner to the customer, conrm that the control box cover, the air lter and suction grille are attached. In addition, explain the power supply status (power supply
ON/OFF) to the customer.
15
English
Page 17
5151 San Felipe, Suite 500 Houston, TX 77056
3PN07521-5H
EM17A032
(1809)
HT
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