Daikin FCQ24MVJU, FCQ30MVJU, FCQ36MVJU, FCQ42MVJU Installation Manual
INSTALLATION MANUAL
SPLIT SYSTEM Air Conditioners
MODELS
Ceiling-mounted Cassette type (Multi flow model)
FCQ24MVJU
FCQ30MVJU
FCQ36MVJU
FCQ42MVJU
Read these instructions carefully before installation.
Keep this manual in a handy place for future reference.
This manual should be left with the equipment owner.
SPLIT SYSTEM Air Conditioners Installation manual
DANGER
WARNING
CONTENTS
1. SAFETY CONSIDERATIONS..........................................2
2. BEFORE INSTALLATION ................................................3
3. SELECTING INSTALLATION SITE..................................4
4. PREPARATIONS BEFORE INSTALLATION....................5
5. INSTALLATION PROCEDURES FOR FRESH
AIR INTAKE DUCT CONNECTION .................................6
6. INDOOR UNIT INSTALLATION .......................................7
7. REFRIGERANT PIPING WORK ......................................7
8. DRAIN PIPING WORK.....................................................9
9. ELECTRIC WIRING WORK...........................................10
10. WIRING EXAMPLE AND HOW TO SET
THE REMOTE CONTROLLER......................................11
11. FIELD SETTING ............................................................13
12. INSTALLATION OF THE DECORATION PANEL...........13
13. TEST OPERATION........................................................14
1. SAFETY CONSIDERATIONS
Please read these “SAFETY CONSIDERATIONS” carefully
before installing air conditioning equipment and be sure to
install it correctly. After completing the installation, make sure
that the unit operates properly during the start-up operation.
Please instruct the customer on how to operate the unit and
keep it maintained.
Also, inform customers that they should store this installation
manual along with the operation manual for future reference.
This air conditioner comes under the term “appliances not
accessible to the general public”.
Meaning of danger, warning, caution and note symbols.
DANGER ...............Indicates an imminently hazardous
situation which,if not avoided, will
result in death or serious injury.
WARNING .............Indicates a potentially hazardous situ-
ation which, if not avoided, could
result in death or serious injury.
CAUTION
NOTE ....................Indicates situation that may result in
•
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.
• Do not install unit in an area where flammable materials
are present due to risk of explosion resulting in serious
injury or death.
• Refrigerant gas in heavier than air and displaces oxy-
gen. A massive leak could lead to oxygen depletion,
especially in basements, and an asphyxiation hazard
could occur leading to serious injury or death.
..............Indicates a potentially hazardous situa-
tion which, if not avoided, may result in
minor or moderate injury. It may also be
sued to alert against unsafe practices.
equipment or property-damage-only
accidents.
• If the refrigerant gas leaks during installation, ventilate
the area immediately.
Refrigerant gas may produce toxic gas if it comes in contact
with fire such as from a fan, heater, stove or cooking device.
Exposure to this gas could result in severe injury or death.
• After completing the installation work, check that the
refrigerant gas does not leak.
Refrigerant gas may produce toxic gas if it comes in contact
with fire such as from a fan, heater, stove or cooking device.
Exposure to this gas could result in severe injury or death.
• Safely dispose of the packing materials.
Packing materials, such as nails and other metal or wooden parts,
may cause stabs or other injuries. Tear apart and throw away plastic packaging bags so that children will not play with them. Children
playing with plastic bags face the danger of death by suffocation.
• Ask your dealer or qualified personnel to carry out
installation work. Do not try to install the air conditioner
by yourself.
Improper installation may result in water leakage, electric
shocks or fire.
• Perform installation work in accordance with this
installation manual.
Improper installation may result in water leakage, electric
shocks or fire.
• Be sure to use only the specified accessories and
parts for installation work.
Failure to use the specified parts may result in water leakage,
electric shocks, fire or the unit falling.
• Install the air conditioner on a foundation strong
enough to withstand the weight of the unit.
A foundation of insufficient strength may result in the equipment falling and causing injuries.
Carry out the specified installation work after consider-
•
ing strong considering winds, typhoons or earthquakes.
Improper installation work may result in the equipment falling
and causing accidents.
• Make sure that a separate power supply circuit is pro-
vided for this unit and that all electrical work is carried
out by qualified personnel according to local laws and
regulations and this installation manual.
An insufficient power supply capacity or improper electrical
construction may lead to electric shocks or fire.
• Make sure that all wiring is secured, the specified
wires are used, and no external forces act on the terminal connections or wires.
Improper connections or installation may result in fire.
•
When wiring the power supply and connecting the remote
controller wire and transmission wire, position the wires
so that the control box lid can be securely fastened.
Improper positioning of the control box lid may result in electric shocks, fire or the terminals overheating.
• Before touching electrical parts, turn off the unit.
• Do not touch the switch with wet fingers.
Touching a switch with wet fingers can cause electric shock.
• Be sure to install an earth leakage breaker.
Failure to install an earth leakage breaker may result in electric shocks, or fire.
2
• Do not install the air conditioner in the following loca-
CAUTION
NOTE
WARNING
NOTE
tions:
(a) where a mineral oil mist or an oil spray or vapor is pro-
duced, 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 result in a malfunction of the equipment.
(d) where flammable gases may leak, where there are
carbon fiber or ignitable dust suspensions in the air, or where
volatile flammables such as thinner or gasoline are handled.
Operating the unit in such conditions may result in fire.
• Heat exchanger fins are sharp to cut.
To avoid injury wear gloves to cover the fins when working
around them.
• Refrigerant pipes may be very hot or very cold during or
immediately after operation.
Touching them could result in burns or frostbite. To avoid
injury give the pipes time to return to normal temperature or,
if you must touch them, be sure to wear proper gloves.
• While following the instructions in this installation man-
ual, install drain pipe in order to ensure proper drainage
and insulate pipe in order to prevent condensate.
Improper drain pipe may result in water leakage and property
damage.
• Be very careful about product transportation.
Some products use PP bands for packaging. Do not use any
PP bands for a means of transportation. It is dangerous.
• Safely dispose of the packing materials.
Packing materials, such as nails and other metal or wooden
parts, may cause stabs or other injuries.
Tear apart and throw away plastic packaging bags so that
children will not play with them. If children play with a plastic
bag which was not torn apart, they face the risk of suffocation.
• Do not turn off the power immediately after stopping
operation.
Always wait at least 5 minutes before turning off the power.
Otherwise, water leakage and trouble may occur.
• Make sure to provide for adequate measures in order to
prevent that the outdoor unit be used as a shelter by
small animals.
Small animals making contact with electrical parts can cause
malfunctions, smoke or fire. Please instruct the customer to
keep the area around the unit clean.
•
Install the indoor and outdoor units, power supply wire and
transmission wire at least 3.5ft. away from televisions or
radios in order to prevent image interference or noise.
(Depending on the radio waves, a distance of 3.5ft. may not
be sufficient enough to eliminate the noise.)
• Remote controller (wireless kit) transmitting distance
can result shorter than expected in rooms with electronic fluorescent lamps. (inverter or rapid start types)
Install the indoor unit as far away from fluorescent lamps as
possible.
• In a domestic environment this product may cause radio
interference in which case the user may be required to
take adequate measures.
• Dismantling of the unit, treatment of the refrigerant, oil
and eventual other parts, should be done in accordance
with the relevant local and national regulations.
2. BEFORE INSTALLATION
• When moving the unit while removing it from the pack-
ing case, be sure to lift it by the four hanger brackets.
Avoid putting any pressure on other parts especially the
refrigerant piping.
• 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.
• When moving the unit at or after opening, hold the unit by the
hanger brackets (× 4). Do not apply force to the refrigerant
pipe, drain pipe or plastic parts.
• For the installation of an outdoor unit, refer to the installation
manual attached to the outdoor unit.
• Do not install or operate the unit in rooms mentioned below.
• Laden with mineral oil, or filled 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 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 fluctuates greatly
such as that in factories. Also in vehicles or vessels.
• This unit, both indoor and outdoor, is suitable for installation
in a commercial and light industrial environment.
If installed as a household appliance it could cause electromagnetic interference.
• Entrust installation to the place of purchase or a qualified person. Improper installation could lead to leak and, in worse
cases, electric shock of fire.
• Use of unspecified parts could lead to the unit falling, leaks
and, in worse cases, electric shock or fire.
• Be sure to read this manual before installing the indoor unit.
• Be sure to mount an air filter (part to be procured in the field)
in the suction air passage in order to prevent water leaking,
etc.
3
2-1 ACCESSORIES
Check the following accessories are included with your unit.
Name
Quantity 1 pc. 1 pc. 8 pcs. 4 pcs.
Shape
Name
Quantity 1 pc. 4 pcs. 4 pcs. 1 each
Shape
Name Sealing pad
Quantity 1 each 2 pcs.
Shape
(1) Drain
hose
(5) Paper
pattern for
installation
Also used as
packing
material
(10) Large
(2) Metal
clamp
(6) Screws
(M5)
For paper
pattern for
installa-
tion
(12) Small
(3) Washer for
hanger
bracket
(7) Washer
fixing plate
(Other)
• Installation manual
• Operation manual
(4) Clamp
Insulation for
fitting
(8) for gas
pipe
(9) for liquid
pipe
FOR THE FOLLOWING ITEMS, TAKE SPECIAL
CARE DURING CONSTRUCTION AND CHECK
AFTER INSTALLATION IS FINISHED.
a. Items to be checked after completion of work
Items to be checked
Are the indoor and outdoor unit
fixed firmly?
Is the gas leak test finished?
Is the unit fully insulated? Condensate water may drip.
Does drainage flow smoothly? Condensate water may drip.
Does the power supply voltage
correspond to that shown on
the name plate?
Are wiring and piping correct?
Is the unit safely grounded? It may result in electric shock.
Is wiring size according to
specifications?
Is something blocking the air
outlet or inlet of either the
indoor or outdoor units?
Are refrigerant piping length
and additional refrigerant
charge noted down?
If not properly done, what is
likely to occur.
The units may drop, vibrate or
make noise.
It may result in insufficient cooling.
The unit may malfunction or
the components burn out.
The unit may malfunction or
the components burn out.
The unit may malfunction or
the components burn out.
It may result in insufficient cooling.
The refrigerant charge in the
system is not clear.
b. Items to be checked at time of delivery
Also review the “SAFETY CONSIDERATIONS”
Items to be checked Check
Did you explain about operations while showing the operation
manual to your customer?
Did you hand the operation manual over to your customer?
Check
(11) Medium
2-2 OPTIONAL ACCESSORIES
• The optional decoration panel and remote controller are
required for this indoor unit.
Table 1
Model
FCQ24 · 30 · 36 · 42MVJU BYC125K-W1
Table 2
Remote controller
Wired type BRC1C71
Wireless type BRC7C812
Optional decoration panel
Color White
2-3 NOTE TO INSTALLER
• Be sure to instruct customers how to properly operate the
unit (especially cleaning filters, operating different functions,
and adjusting the temperature) by having them carry out
operations themselves while looking at the manual.
3. SELECTING INSTALLATION SITE
Please attach additional thermal insulation material to the unit
body when it is believed that the relative humidity in the ceiling
exceeds 80%. Use glass wool, polyethylene foam, or similar
with a thickness of 3/8 in.. or more as thermal insulation material.
(1) Select an installation site where the following conditions are
fulfilled and that meets with your customer’s approval.
• In the upper space (including the back of the ceiling) of the
indoor unit where there is no possible dripping of water
from the refrigerant pipe, drain pipe, water pipe, etc.
• Where optimum air distribution can be ensured.
• Where nothing blocks the air passage.
• Where condensate can be properly drained.
• Where the false ceiling is not noticeably on an incline.
• Where sufficient clearance for maintenance and service
can be ensured.
• Where piping between indoor and outdoor units is possible within the allowable limit. (Refer to the installation
manual of the outdoor unit.)
4
DANGER
• Do not install unit in an area where flammable materials are
WARNING
NOTE
H
H
59
or more
59
or more
59
or more
59
or more
Air
discharge
Air
discharge
39 3/8 or more
Air
inlet
Air inlet
Air discharge
Air
discharge
[Space required for installation]
present due to the risk explosion resulting in serious injury or
death.
• 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.
• Install the indoor and outdoor units, power supply wire and
connecting wires at least 3.5ft. away from televisions or
radios in order to prevent image interference or noise.
(Depending on the radio waves, a distance of 3.5ft. may not
be sufficient enough to eliminate the noise.)
(2) Ceiling height
This indoor unit may be installed on ceilings up to 10.5 ft.
in height.
(3) Use suspension bolts for installation. Check whether
the ceiling is strong enough to support the weight of
the unit or not. If there is a risk, reinforce the ceiling
before installing the unit.
(Installation pitch is marked on the paper pattern for installation. Refer to it to check for points requiring reinforcing.)
4. PREPARATIONS BEFORE INSTALLATION
(1) Relation of ceiling opening to unit and suspension bolt
position
Refrigerant
pipe
Suspension
bolt (×4)
33 1/16 (Indoor unit)
34 5/8 (Ceiling opening)
37 3/8 (Decoration panel)
30 11/16 (Suspension bolt pitch)
26 3/4 (Suspension bolt pitch)
33 1/16 (Indoor unit)
34 5/8 (Ceiling opening)
37 3/8 (Decoration panel)
A
Hanger
bracket
FCQ24·30·36·42MVJU 11 3/4 or more
Model H
(length: in.)
False
ceiling
[View as seen from A]
(length: in.)
(5 15/16)
■ Installation is possible when ceiling opening dimensions is
as follows.
• When installing the unit within the frame for fixing false
ceiling.
35 13/16
33 1/16 (Indoor unit)
35 13/16
(Dimension inside frame)
33 1/16 (Indoor unit)
(length: in.)
(Dimension inside frame)
5
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