DAIKIN FXDQ07MVJU, FXDQ09MVJU, FXDQ12MVJU, FXDQ18MVJU, FXDQ24MVJU INSTALLATION MANUAL
INSTALLATION MANUAL
SYSTEM Inverter Air Conditioners
MODEL
Ceiling-mounted duct type low static pressure unit
FXDQ07MVJU
FXDQ09MVJU
FXDQ12MVJU
FXDQ18MVJU
FXDQ24MVJU
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.
VRV SYSTEM Inverter Air Conditioners Installation manual
CONTENTS
1. SAFETY CONSIDERATIONS ..........................................1
2. BEFORE INSTALLATION.................................................2
3. SELECTING INSTALLATION SITE ..................................3
4. PREPARATIONS BEFORE INSTALLATION ....................4
5. INDOOR UNIT INSTALLATION........................................5
6. REFRIGERANT PIPING WORK ...................................... 6
7. DRAIN PIPING WORK..................................................... 7
8. INSTALLING THE DUCT .................................................9
9. ELECTRIC WIRING WORK.............................................9
10. WIRING EXAMPLE........................................................ 10
11. FIELD SETTING AND TEST RUN.................................12
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 situ-
ation which,if not avoided, will result in
death or serious injury.
WARNING ..............Indicates a potentially hazardous situa-
tion which, if not avoided, could result in
death or serious injury.
CAUTION ...............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.
NOTE ......................Indicates situation that may result in
equipment or property-damage-only
accidents.
DANGER
• Refrigerant gas is heavier than air and displaces oxygen.
A massive leak could led to oxygen depletion, especially
in basements, and an asphyxiation hazard could occur
leading to serious 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.
• 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 cause 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 cause severe injury or death.
• 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.
• 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.
WARNING
• Ask your dealer or qualified personnel to carry out installation work. Do not try to install the machine by yourself.
Improper installation may result in water leakage, electric
shocks or fire.
• Perform installation work in accordance with this instal-
lation 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 taking into
account strong 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 wiring and transmission wiring, position the wires so that the electric parts box lid can be
securely fastened.
Improper positioning of the electric parts box lid may result in
electric shocks, fire or the terminals overheating.
• Before touching electrical parts, turn off the unit.
• Be sure to establish an earth.
Do not earth the unit to a utility pipe, arrester, or telephone
earth.
Incomplete earth may cause electrical shock, or fire.
1
A high surge current from lightning or other sources may
cause damage to the air conditioner.
• 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.
• Do not install the air conditioner in the following locations:
(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 pro-
duced
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.
• Heat exchanger fins are sharp enough to cut.
To avoid injury wear gloves or cover the fins when working
around them.
• Use of unspecified parts could lead to the unit falling,
leaks and, in worse cases, electric shock or fire.
• Entrust installation to the place of purchase or a qualified serviceman.
Improper installation could lead to leaks and, in worse cases,
electric shock or fire.
• 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.
CAUTION
• While following the instructions in this installation manual, install drain piping in order to ensure proper drainage and insulate piping in order to prevent condensation.
Improper drain piping 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.
• Do not turn off the power immediately after stopping
operation.
Always wait at least five 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.
• 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.
• 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
WARNING
• Entrust installation to the place of purchase or a qualified serviceman. Improper installation could lead to leaks and, in
worse cases, electric shock or fire.
• Use of unspecified parts could lead to the unit falling, leaks
and, in worse cases, electric shock or fire.
NOTE
• 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.
The accessories needed for installation must be retained in
your custody until the installation work is completed. Do
not discard them!
1. Decide upon a line of transport.
2. 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 while removing it from the packing
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.)
For the installation of an outdoor unit, refer to the installation
manual attached to the outdoor unit.
2-1 PRECAUTIONS
• Be sure to instruct customers how to properly operate the
unit (operating different functions, and adjusting the temperature ) by having them carry out operations themselves while
looking at the operation manual.
• Do not install in locations where the air contains high levels of
salt such as that near the ocean and where voltage fluctuates
greatly such as that in factories, or in vehicles or vessels.
NOTE
• Install the indoor and outdoor units, power supply wiring
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
2-2 ACCESSORIES
Check the following accessories are included with your unit.
Name
Quantity 1 pc. 1 pc. 1 each 1 each
Shape
Name
Quantity 1 set 8 pcs. 1 set 4 pcs.
Shape
Name
Quantity 1 pc. 2 pcs. 1 pc.
Shape
Metal
clamp (1)
Screws for duct
flanges (7)
24 pcs.
Conduit mounting
plate
Drain hose
(2)
Washer for hanger
bracket (8)
Screw for conduit
mounting plate
Insulation for fitting Sealing pad
for liquid pipe (3)
for gas pipe (4)
Clamp
Large (9)
8 pcs.
small (10)
4 pcs.
Large (5)
mid. (6)
Washer fixing
plate (11)
Insulation tube
Does drainage flow
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
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?
Condensate may drip.
The unit may malfunction or
the components burn out.
The unit may malfunction or
the components burn out.
Imcomplete grounding may
result in electric shocks.
The unit may malfunction or
the components burn out.
It may result in insufficient
cooling.
The refrigerant charge in
the system is not clear.
Also review the “SAFETY CONSIDERATIONS”.
b. Items to be checked at time of delivery
Items to be checked Check
Did you explain about operations while showing the
operation manual to your customer?
Did you hand the operation manual and warranty over to
your customer?
Did you explain about the way of maintaining and cleaning
local procurements (air filter, grille (both air outlet and suction grille), etc.) to your customer?
Did you hand manuals of local procurements (in case
equipped) over to your customer?
Name
Quantity 2 pcs. 1 pc.
Shape
Sealing material (12)
Air filter (13)
(Other)
• Operation manual
• Installation manual
2-3 OPTIONAL ACCESSORIES
• This indoor unit requires one of the operation remote controls
listed below.
Remote controller
Wired type BRC1C71
Wireless type BRC4C82
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 may drip.
If not properly done, what
is likely to occur
The units may drop,
vibrate or make noise.
It may result in insufficient
cooling.
Check
3. SELECTING INSTALLATION SITE
CAUTION
• When moving the unit while removing it from the packing case,
be sure to lift it by the four hanger brackets. Avoid putting any
pressure on other parts especially the refrigerant piping.
• If you think the humidity inside the ceiling might exceed 86°F
and RH80%, reinforce the insulation on the unit body.
Use glass wool or polyethylene foam as insulation so that the
thickness is more than 1/2 in. and fits inside the ceiling opening.
(1) Select an installation site where the following condi-
tions are fulfilled and that meets with your customer’s
approval.
• Where optimum air distribution can be ensured.
• Where nothing blocks air passage.
• Where condensate can be properly drained.
• Where the ceiling is strong enough to bear the indoor unit
weight.
• Where the false ceiling is not noticeably on an incline.
• Where sufficient clearance for maintenance and service
can be ensured. (Refer to Fig. 1)
• Where piping between indoor and outdoor units is possible within the allowable limit. (Refer to the installation
manual for the outdoor unit.)
3
*12 or
more
Maintenance
space
Control box
13/16 or more
Fig. 1
or more
Maintenance
space
7-7/8
Ceiling
12
Floor surface
*H=9-1/2 or more
100 or more
(length : in.)
(2) 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 carton box for installation. Refer to it to check for points requiring reinforcing.)
4. PREPARATIONS BEFORE INSTALLATION
(1) Confirm the positional relationship between the unit
and suspension bolts. (Refer to Fig. 2)
• Install the inspection opening on the control box side where
maintenance and inspection of the control box and drain
pump are easy. Install the inspection opening also in the
lower part of the unit.
24-7/16
19-11/16
Suspension
bolt pitch
(length : in.)
• Select the *H dimension such that a downward slope of at
least 1/100 is ensured as indicated in “7. DRAIN PIPING
WORK”.
• The maintenance space marked with “ * ” is required
when the installation box for adaptor PC board
(KRP1B101) sold separately is used.
[ PRECAUTION ]
• Install the indoor and outdoor units, power supply wiring
and connecting wires at least 3.3 ft. away from televisions
or radios in order to prevent image interference or noise.
(Depending on the radio waves, a distance of 3.3 ft. may
not be sufficient enough to eliminate the noise.)
• If installing the wireless kit in a room with electronic fluorescent lighting (inverter or rapid start type), the remote
controller’s transmission distance may be shortened.
Indoor units should be installed as far away from fluorescent lighting as possible.
DANGER
• Do not install unit in an area where flammable materials are
present due to the risk 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.
NOTE
• Install the indoor and outdoor units, power supply wiring and
connecting wires at least 3.5 ft. away from televisions or
radios in order to prevent image interference or noise.
(Depending on the radio waves, a distance of 3.5 ft. may not
be sufficient enough to eliminate the noise.)
Air outlet
Drain pump
〈SERVICE SPACE〉
(Ceiling opening)
Air inlet
Control box
¨
17-3/4
(Inspection
opening size)
24-7/16
Allow view
Inspection door
A
Ceiling
A
B
(Suspension bolt pitch )
Fig. 2
(length : in.)
Model A B
07 · 09 · 12 type 27-9/16 29-1/8
18 type 35-7/16 37
24 type 43-5/16 44-7/8
(2) Make sure the range of the unit’s external static pres-
sure is not exceeded.
(See the Engineering Data for the range of the external
static pressure setting.)
4
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