SYSTEM Air Conditioners
MODELS
(Ceiling-mounted Multi flow cassette type)
FXZQ20MVE
FXZQ25MVE
FXZQ32MVE
FXZQ40MVE
FXZQ50MVE
INSTALLATION MANUAL
English
Español
Português
CAREFULLY READ THESE INSTRUCTIONS BEFORE INSTALLATION.
KEEP THIS MANUAL IN A HANDY PLACE FOR FUTURE REFERENCE.
LEA DETENIDAMENTE ESTAS INSTRUCCIONES ANTES DE LA INSTALACIÓN.
CONSERVE ESTE MANUAL PARA POSIBLES CONSULTAS FUTURAS.
LEIA ATENTAMENTE ESTAS INSTRUÇÕES ANTES DA INSTALAÇÃO.
MANTENHA ESTE MANUAL NUM LOCAL DE FÁCIL ACESSO PARA CONSULTA.
FXZQ20MVE
FXZQ25MVE
FXZQ32MVE
FXZQ40MVE
FXZQ50MVE
VRV SYSTEM Air Conditioners Installation manual
CONTENTS
1. SAFETY PRECAUTIONS ........................................................................................... 1
2. BEFORE INSTALLATION........................................................................................... 3
3. SELECTING INSTALLATION SITE ............................................................................ 5
4. PREPARATIONS BEFORE INSTALLATION.............................................................. 6
5. INDOOR UNIT INSTALLATION ..................................................................................7
6. REFRIGERANT PIPING WORK ................................................................................. 9
7. DRAIN PIPING WORK.............................................................................................. 11
8. ELECTRIC WIRING WORK...................................................................................... 14
9. WIRING EXAMPLE AND HOW TO SET THE REMOTE CONTROLLER ................ 15
10. INSTALLATION OF THE DECORATION PANEL..................................................... 20
11. FIELD SETTINGS .....................................................................................................20
12. TEST OPERATION...................................................................................................21
The original instructions are written in English. All other languages are translations of the original instructions.
1. SAFETY PRECAUTIONS
Be sure to follow this “SAFETY PRECAUTIONS”.
This product comes under the term “appliances not accessible to the general public”.
This is a class A product. In a domestic environment this product may cause radio interference in which case
the user may be required to take adequate measures.
This manual classifies the precautions into WARNINGS and CAUTIONS.
Be sure to follow all the precautions below: They are all important for ensuring safety.
WAR NING ..........Indicates a potentially hazardous situation which, if not avoided, could result in death
or serious injury.
CAUTION ...........Indicates a potentially hazardous situation which, if not avoided, may result in minor
or moderate injury.
It may also be used to alert against unsafe practices.
• After the installation is completed, test the air conditioner and check if the air conditioner operates properly. Give the user adequate instructions concerning the use and cleaning of the indoor unit according to
the Operation Manual. Ask the user to keep this manual and the Operation Manual together in a handy
place for future reference.
WARNING
• Ask your local dealer or qualified personnel to carry out installation work.
Improper installation may result in water leakage, electric shocks or a fire.
• Perform installation work in accordance with this installation manual.
Improper installation may result in water leakage, electric shocks or a fire.
• Consult your local dealer regarding what to do in case of refrigerant leakage.
When the air conditioner is installed in a small room, it is necessary to take proper measures so that the
amount of any leaked refrigerant does not exceed the concentration limit in the event of a leakage.
Otherwise, this may lead to an accident due to oxygen deficiency.
• Be sure to use only the specified parts and accessories for installation work.
Failure to use the specified parts may result in the air conditioner falling down, water leakage, electric
shocks, a fire, etc.
English 1
• Install the air conditioner on a foundation that can withstand its mass.
Insufficient strength may result in the air conditioner falling down and causing injury.
In addition, it may lead to vibration of indoor units and cause unpleasant chattering noise.
• Carry out the specified installation work in consideration of strong winds, typhoons, or earthquakes.
Improper installation may result in an accident such as air conditioner falling.
• Make certain that all electrical work is carried out by qualified personnel according to the applicable legislation (note 1) and this installation manual, using a separate circuit.
In addition, even if the wiring is short, make sure to use a wiring that has sufficient length and never connect additional wiring to make the length sufficient.
Insufficient capacity of the power supply circuit or improper electrical construction may lead to electric
shocks or a fire.
(note 1) applicable legislation means “All international, national and local directives, laws, regulations
and/or codes which are relevant and applicable for a certain product or domain”.
• Make sure that all wiring is secure, using the specified wiring and ensuring that external forces do not act
on the terminal connections or wiring.
Incomplete connection or fixing may cause an overheat or a fire.
• When wiring the remote controller wiring and transmission wiring, and wiring the power supply, form the
wiring orderly so that the control box cover can be securely fastened.
If the control box cover is not in place, overheat of the terminals, electric shocks or a fire may be caused.
• If refrigerant gas leaks during installation work, ventilate the area immediately.
Toxic gas may be produced if refrigerant gas comes into contact with a fire.
• After completing the installation work, check to make sure that there is no leakage of refrigerant gas.
Toxic gas may be produced if refrigerant gas leaks into the room and comes into contact with a source of
a fire, such as a fan heater, stove or cooker.
• Disconnect the power supply before touching the electric components.
If you touch the live part, you may get an electric shocks.
• Do not directly touch refrigerant that has leaked from refrigerant pipes or other areas, as there is a danger
of frostbite.
• Earth the air conditioner.
Do not connect the earth wiring to gas or water piping, lightning conductor or telephone earth wiring.
Incomplete earthing may cause electric shocks or a fire.
A high surge current from lightning or other sources may cause damage to the air conditioner.
• Be sure to install an earth leakage circuit breaker.
Failure to do so may cause electric shocks and a fire.
CAUTION
• Install drain piping according to this installation manual to ensure good drainage, and insulate the piping
to prevent condensation.
Improper drain piping may cause water leakage, make the furniture get wet.
• Install the air conditioner, power supply wiring, remote controller wiring and transmission wiring at least 1
meter away from televisions or radios to prevent image interference or noise.
(Depending on the radio waves, a distance of 1 meter may not be sufficient to eliminate the noise.)
• Install the indoor unit as far as possible from fluorescent lamps.
If a wireless remote controller kit is installed, the transmission distance may be shorter in a room where an
electronic lighting type (inverter or rapid start type) fluorescent lamp is installed.
• Do not install the air conditioner in places such as the following:
1. Where there is mist of oil, oil spray or vapour for example a kitchen.
Resin parts may deteriorate, and cause them to fall out or water to leak.
2. Where corrosive gas, such as sulfurous acid gas, is produced.
Corrosion of copper pipings or brazed parts may cause the refrigerant to leak.
3. Where there is machinery which emits electromagnetic waves.
Electromagnetic waves may disturb the control system, and cause malfunction of the equipment.
4. Where flammable gases may leak, where carbon fibre or ignitable dust is suspended in the air or where
volatile flammables, such as thinner or gasoline, are handled.
If the gas should leak and remained around the air conditioner, it may cause ignition.
• The air conditioner is not intended for use in a potentially explosive atmosphere.
2 English
2. BEFORE INSTALLATION
Do not exert pressure on the resin parts when opening the unit or when moving it after opening
Be sure to check the type of R410A refrigerant to be used before doing any work. (Using an incorrect
refrigerant will prevent normal operation of the unit.)
• When opening the unit or moving it after opening, be sure to lift it by holding on to the lifting lugs without
exerting any pressure on other parts, especially, drain piping, and other resin parts.
• Decide upon a line of transport.
• Leave the unit inside its packaging while moving, until reaching the installation site. Use a sling of soft
material, where unpacking is unavoidable or protective plates together with a rope when lifting, to avoid
damage or scratches to the unit.
• Especially, do not unfasten packing case (top) guarding the control box until suspending the unit.
• Refer to the installation manual of the outdoor unit for items not described in this manual.
• Do not dispose of any parts necessary for installation until the installation is complete.
2-1 PRECAUTIONS
• Be sure to read this manual before installing the indoor unit.
• When selecting installation site, refer to the paper pattern.
• This unit is suitable for installation in a household, commercial and light industrial environment.
• 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.)
• Where corrosive gas like sulfurous gas exists. (Copper tubing and brazed spots may corrode.)
• Where volatile flammable gas like thinner or gasoline is used.
• 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.
2-2 ACCESSORIES
Check the following accessories are included with your unit.
(
Name
Quantity
Shape
Name
Quantity
Shape
(1)Drain hose
(2)Metal clamp (4)Clamp
1 pc. 1 pc.1 pc. 8 pcs.
(
(
6)Screws
(M5)
7)Washer
fixing plate
4 pcs. 4 pcs. 2 pcs.
For paper pattern
for installation
(8)For gas pipe
(9)For liquid pipe
3)Washer for
hanger bracket
Insulation
for fitting
1 each.
Sealing pad
1 each.
(
10)Large
(
(Big)
6 pcs.
11)Small
(Small)
1 pc.
(12)Sealing
material
(5)Paper pattern
for installation
Also used as
packing material
(Other)
Operation
manual
Installation
manual
English 3
2-3 OPTIONAL ACCESSORIES
• The optional decoration panel and remote controller are required for this indoor unit. (Refer to Table 1, 2)
Tab le 1
Unit model Optional decoration panel
FXZQ20·25·32·40·50MVE
• These are two types of remote controllers: wired and wireless. Select a remote controller from Table 2
according to customer request and install in an appropriate place.
Tab le 2
Remote controller type Cooling only type Heat Pump type
Wired type BRC1C61
Wireless type BRC7E531W BRC7E530W
NOTE
• If you wish to use a remote controller that is not listed in Table 2, select a suitable remote controller after
consulting catalogs and technical materials.
BYFQ60BW1
Color : White
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 If not properly done, what is likely to occur Check
Are the indoor and outdoor unit fixed firmly? The units may drop, vibrate or make noise.
Is the outdoor unit fully installed?
Is the gas leak test finished? It may result in insufficient cooling.
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? Dangerous at electric leakage.
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?
b. Items to be checked at time of delivery
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.
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 PRECAUTIONS”
Items to be checked Check
Are the control box lid, air filter, suction grille attached?
Did you explain about operations while showing the instruction manual to your customer?
Did you hand the instruction manual over to your customer?
4 English
c. Points for explanation about operations
The items with WARNING and CAUTION marks in the instruction manual are the items pertaining
to possibilities for bodily injury and material damage in addition to the general usage of the product.
Accordingly, it is necessary that you make a full explanation about the described contents and also ask
your customers to read the instruction manual.
2-4 NOTE TO THE 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
〈Hold the unit by the 4 lifting lugs when opening the box and moving it, and do not exert pressure on to any
other part piping (refrigerant, drain, etc.) or plastic parts.
If the temperature or humidity inside the ceiling might rise above 30°C or RH 80%, respectively, use the highhumidity kit (sold separately) or add extra insulation to the main unit body.
Use glass wool or polyethylene foam as insulation and make sure it is at least 10mm thick and fits inside the
ceiling opening.〉
The direction this product blows can be selected. However, a separately sold shut-off material kit is
needed in order to make the unit blow in two, three, or four (corner shut-off) directions.
(1) Select an installation location with the customer’s approval which matches the following condi-
tions.
• A location from which cool (warm) air will reach the whole room.
• A location with no objects blocking the air passage.
• A location where drainage can be done with no problem.
• A location strong enough to support the weight of the indoor unit.
• Locations where the wall is not significantly tilted.
• A location which leaves enough room for installation and service work.
• A location where there is no risk of flammable gas leaking.
• A location where the length of the indoor-outdoor piping is no longer than the tolerated length (see the
installation manual that came with the outdoor unit for details).
[Space required for installation] (mm)
*
>
1500
*
>
1500
H
2500
>
For installation
Air
outlet
>
*
1500
in high places
Air
1500
inlet
>
Fig. 1
Air
outlet
*
>
1500
*
>
1500
*
>
1500
Fig. 2
NOTE
• Leave 200 mm or more space where marked with the *, on sides where the air outlet is closed.
Model H
FXZQ20·25·32·40·50 285 (Confirm the space of 295 or more)
English 5
CAUTION
• The indoor and outdoor units and the power supply wiring and remote controller cord must be installed at
least 1m away from any televisions or radios. This is to prevent interference with picture and sound reception. (Interference may occur even at 1m away depending on the reception quality.)
• If installing the wireless kit, the distance of the signal sent from the remote controller might be shorter if
there are fluorescent lights which are electrically started (such as with inverters, rapid starters, etc.) in the
room. The indoor unit should be installed as far away from fluorescent lights as possible.
(2) Ceiling height
• Install this unit where the height of bottom panel is more than 2.5 m so that the user cannot easily touch.
(3) Air direction
The air direction shown is an example.
Select the appropriate number of directions according to the shape of the room and the location of the unit. (Field
settings have to be made using the remote controller and the outlet vents have to be shut off if two, three, or four
(corner shut-off) directions are selected. See the shut-off materials (sold separately) installation manual for details.)
[Air flow direction] (Example)
Piping Piping Piping
Air outlet in 4 directions Air outlet in 3 directions Air outlet in 2 directions
(4) 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
575 (indoor unit)
533 (Suspension bolt pitch)
585-660 (Ceiling opening)
700 (Decoration panel)
533 (Suspension bolt pitch)
575 (indoor unit)
585-660 (Ceiling opening)
700 (Decoration panel)
piping
Suspension
bolt (×4)
(Ceiling-panel overlapping dimension)
Fig. 3
A
(Ceiling opening dimension)
585 – *660
False
ceiling
20
≤
View as seen from A
Fig. 4
20
≤
Hanger
bracket
(mm)
(180)
6 English
NOTE
• Installation is possible with a ceiling dimension of 660 mm (marked with *). However, to achieve a ceilingpanel overlapping dimension of 20 mm, the spacing between the ceiling and the unit should be 45 mm or
less. If the spacing between ceiling and the unit is over 45 mm, attach ceiling material to part or recover
the ceiling.
False
ceiling
Ceiling material
<
45
(2) Make the ceiling opening needed for installation where applicable. (For existing ceilings)
• Refer to the paper pattern for installation (5) for ceiling opening dimensions.
• Create the ceiling opening required for installation. From the side of the opening to the casing outlet,
implement the refrigerant and drain piping and wiring for remote controller (unnecessary for wireless
type) and wiring between units. Refer to each PIPING or WIRING section.
• After making an opening in the ceiling, it may be necessary to reinforce ceiling beams to keep the ceiling level and to prevent it from vibrating. Consult the builder for details.
(3) Install the suspension bolts.
M10 size bolt) Use a hole-in
(Use either a M8
anchor for existing ceilings, and a sunken insert,
sunken anchor or other field supplied parts for new
ceilings to reinforce the ceiling to bear the weight of
the unit.
Adjust clearance (50
before proceeding further.
NOTE
• All the above parts are field supplied.
~
–
100 mm) from the ceiling
<
45
False
ceiling
(mm)
Fig. 5
<installation example>
Ceiling slab
Anchor
Long nut or turn-buckle
Suspension bolt
False ceiling
Fig. 6
(mm)
5. INDOOR UNIT INSTALLATION
Installing optional accessories (except for the decoration panel) before installing the indoor unit is easier.
However, for existing ceilings, install fresh air intake kit and branch duct before installing the unit.
As for the parts to be used for installation work, be sure to use the provided accessories and specified parts
designated by our company.
(1) For new ceilings
(1-1) Install the indoor unit temporarily.
• Attach the hanger bracket to the suspension bolt. Be sure to fix it securely by using a nut and
washer (3) from the upper and lower sides of the hanger bracket.
The washer fixing plate (7) will prevent the washer from falling.
Washer (3) (accessory)
Nut
(Field supplied)
Hanger bracket
Tighten
(double nuts)
[Securing the hanger bracket]
Fig. 7 Fig. 8
[Securing the washer]
Insert
Washer fixing plate (7)
(accessory)
English 7
(1-2) Refer to the paper pattern for installation (5) for ceiling opening dimension.
Consult the builder or carpenter for details.
• The center of the ceiling opening is indicated on the paper pattern for installation.
The center of the unit is indicated on the paper pattern for installation.
• Fix the paper pattern to the unit with screws (6) (×4).
Paper pattern for installation (5)
(accessory)
Screws (6)
(accessory)
Screws (6)
(accessory)
<Ceiling work>
(1-3) Adjust the unit to the right position for installation.
(Refer to 4.PREPARATIONS BEFORE INSTALLATION-(1))
(1-4) Check the unit is horizontally level.
• The indoor unit is equipped with a built-in drain
pump and float switch. Verify that it is level by using
a water level or a waterfilled vinyl tube.
[Installation of paper pattern for installation]
Fig. 9
Water level
Vinyl tube
CAUTION
If the unit is tilted against condensate flow, the float
switch may malfunction and cause water to drip.
Remove the washer fixing plate (7) used for preventing the washer from falling and tighten the upper nut.
(1-5)
(1-6) Remove the paper pattern for installation (5).
(2) For existing ceilings
(2-1) Install the indoor unit temporarily.
• Attach the hanger bracket to the suspension bolt. Be sure to fix it securely by using a nut and
washer (3) from the upper and lower sides of the hanger bracket.
The washer fixing plate (7) will prevent the washer from falling.
Washer (3) (accessory)
Hanger bracket
Nut
(Field supplied)
(2-2) Adjust the height and position of the unit.
(Refer to 4.PREPARATIONS BEFORE INSTALLATION-(1).)
(2-3) Perform steps (1-4), (1-5) in (1) For new ceilings.
Tighten
(double nuts)
[Securing the hanger bracket]
Fig. 11 Fig. 12
[Maintaining horizontality]
Fig. 10
Insert
Washer fixing plate (7)
(accessory)
[Securing the washer]
8 English
6. REFRIGERANT PIPING WORK
• For the outdoor unit refrigerant piping, refer to the installation manual attached to the outdoor unit.
• Carry out insulation of both gas and liquid refrigerant piping securely. If not insulated, it may cause water
leakage. For gas piping, use insulation material of which heat resistant temperature is not less than
120°C.
For use under high humidity, strengthen the insulation material for refrigerant piping. If not strengthened,
the surface of insulation material may sweat.
• Before installation work, make sure that the refrigerant is R410A. (Unless the refrigerant is R410A, the
normal operation cannot be expected.)
CAUTION
This air conditioner is a dedicated model for new refrigerant R410A. Make sure to meet the requirements shown below and carry out installation work.
• Use dedicated piping cutters and flaring tools for R410A.
• When making a flare connection, coat the flared inner surface only with ether oil or ester oil.
• Use only the flare nuts attached to the air conditioner. If other flare nuts are used, it may cause
refrigerant leakage.
• To prevent contamination or moisture from getting into the piping, take measures such as pinching or taping the pipings.
Do not mix substance other than the specified refrigerant such as air into the refrigeration circuit.
If the refrigerant leaks during the work, ventilate the room.
• The refrigerant is pre-charged in the outdoor unit.
• When connecting the pipings to the air conditioner, make sure to use a
spanner and a torque wrench as shown in Fig. 13.
• For the dimension of flared part and the tightening torque, refer to the
Tab le 3.
• When making a flare connection, coat the flared inner surface only with
ether oil or ester oil.
(Refer to Fig. 14)
Then, turn the flare nut 3 to 4 times with your hand and screw in the nut.
CAUTION
Over-tightening may damage the flare and cause
a refrigerant leakage.
NOTE
• Use the flare nut included with the unit main body.
Tab le 3
Pipe size Tightening torque (N·m)
Flare dimensions
A (mm)
Torque wrench
Spanner
Piping union
Flare nut
Coat the flared inner
surface only with ether
oil or ester oil.
Flare
Fig. 13
Fig. 14
)
ø6.4(1/4
ø12.7(1/2
• Refer to “Table 3” to determine the proper tightening torque.
English 9
”
)
”
15.7 ± 1.5
54.9 ± 5.4 16.4 ± 0.2
8.9 ± 0.2
Not recommendable but in case of emergency
)
You must use a torque wrench but if you are obliged to install the unit without a torque wrench, you may follow the installation method mentioned below.
When you keep on tightening the flare nut with a spanner, there is a point where the tightening torque suddenly increases. From that position, further tighten the flare nut the angle shown below:
Pipe size Further tightening angle Recommended arm length of tool
ø6.4 (1/4”) 60 – 90 degrees Approx. 150mm
ø12.7 (1/2”) 30 – 60 degrees Approx. 250mm
After the work is finished, make sure to check that there is no gas leak.
CAUTION
CAUTION TO BE TAKEN WHEN BRAZING REFRIGERANT PIPING
Do not use flux when brazing refrigerant piping. Therefore, use the phosphor copper brazing filler metal
(BCuP-2:JIS Z 3264/B-Cu93P-710/795:ISO 3677) which does not require flux.
(Flux has extremely harmful influence on refrigerant piping systems. For instance, if the chlorine based
flux is used, it will cause pipe corrosion or, in particular, if the flux contains fluorine, it will damage the
refrigerant oil.)
• Before brazing local refrigerant piping, nitrogen gas shall be blown through the piping to expel air from the
piping.
If your brazing is done without nitrogen gas blowing, a large amount of oxide film develops inside the piping, and could cause system malfunction.
• When brazing the refrigerant piping, only begin brazing after having carried out nitrogen substitution or
while inserting nitrogen into the refrigerant piping. Once this is done, connect the indoor unit with a flared
or a flanged connection.
• Nitrogen should be set to 0.02 MPa with a pressure-reducing valve if brazing while inserting nitrogen into
the piping. (Refer to Fig.15)
Refrigerant piping
Part to be
brazed
Nitrogen
Taping
Pressure-reducing valve
hands valve
Nitrogen
Fig. 15
• Make absolutely sure to execute heat insulation works on the pipe-connecting section after checking gas
leakage by thoroughly studying the following figure and using the attached heat insulating materials for fitting (8) and (9). (Fasten both ends with the clamps (4).) (Refer to Fig. 16)
Wrap the sealing pad (11) only around the insulation for the joints on the gas piping side.
•
(Refer to Fig. 16)
Small sealing pad
(accessory) (11)
(Wrap the piping union
with the sealing pad.)
Clamp (4)
(Big 4)
(accessory)
Insulation for fitting
(accessory) (9)
(for liquid pipe)
Insulation for fitting (accessory) (8
Liquid piping
(for gas pipe)
Gas piping
Fig. 16
10 English
CAUTION
Be sure to insulate any field piping all the way to the piping connection inside the unit. Any exposed piping
may cause condensation or burns if touched.
7. DRAIN PIPING WORK
(1) Carry out the drain piping
• Lay pipes so as to ensure that drainage can occur with no problems.
• Employ a pipe with either the same diameter or with the diameter larger (excluding the raising section)
than that of the connecting pipe (PVC pipe, nominal diameter 20 mm, outside diameter 26 mm).
• Keep the drain pipe short and sloping downwards at a gradient of at least 1/100 to prevent air pockets
from forming.
• If the drain hose cannot be sufficiently set on a slope, refer to PRECAUTIONS FOR DRAIN RAISING PIPING on page 12.
• To keep the drain hose from sagging, space hanger bracket every 1 to 1.5 m.
Hanger bracket
GOOD
Fig. 17
CAUTION
Water pooling in the drainage piping can cause the drain to clog.
• Use the attached drain hose (1) and metal clamp (2).
• Insert the drain hose into the drain socket up to the base, and tighten the clamp securely within the portion of
a gray tape of the hose-inserted tip. Tighten the clamp until the screw head is less than 4 mm from the hose.
• Wrap the attached large sealing pad (10) over the metal clamp (2) and drain hose to insulate.
• Make sure that heat insulation work is executed on the following 2 spots to prevent any possible water
leakage due to dew condensation.
• Indoor drain pipe
• Drain socket
1/100
gradient or more
Metal
clamp (2)
(accessory)
WRONG
Metal
clamp (2)
(accessory)
WRONG
Fig. 18
Large sealing pad (10)
(accessory)
Drain hose (1)
Tape (Gray)
Fig. 19 Fig. 20
English 11
(accessory)
4mm
<PRECAUTIONS FOR DRAIN RAISING PIPING>
• Install the drain raising pipes at a height of less than 545 mm.
The drain pump of this unit has a high delivery flow rate. Therefore, the higher the drain raising height is,
the lower the sound of draining will be. For this reason, a minimum drain raising height of 300mm is recommended.
• Install the drain raising pipes at a right angle to the indoor unit and no more than 300 mm from the unit.
Drain hose (1)
(accessory)
Level or
tilted
slightly up
Drain hose (accessory)(1)
Ceiling slab
300
1-1.5m
Hanger bracket
Adjustable
( 545)
(mm)
To prevent air bubbles in the
drain hose part, keep it level or
slightly tilted up. Any bubbles in
the hose might cause the unit
Metal clamp (2)
(accessory)
Drain raising pipe
Raising section
205
750
to make noise due to backflow
when the drain pump stops.
Fig. 21
NOTE
• To ensure no excessive pressure is applied to the included drain hose (1), do not bend or twist when installing. (This may cause leakage.)
• If converging multiple drain pipes, install according to the procedure shown below.
Central drain pipe
The drain pipe should have a downward
slope of at least 1/100 to prevent
0 – 545mm
air pockets from forming.
Water accumulating in the drain
Fig. 22
piping can cause the drain to clog.
Select converging drain pipes whose gauge is suitable for the operating capacity of the unit.
(2) After piping work is finished, check if drainage flows smoothly.
• Add approximately 1000 cc of water slowly from the air outlet and check drainage flow.
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 pipes and corrode the heat exchanger.
• Keep in mind that it will become the cause of getting drain pipe blocked if water collects on drain pipe.
WHEN ELECTRIC WIRING WORK IS FINISHED
• Add approximately 1000cc of water slowly from the air outlet and check drainage flow.
• Check drainage flow during COOL running, explained under ‘‘12. TEST OPERATION’’.
WHEN ELECTRIC WIRING WORK IS NOT FINISHED
CAUTION
• Electrical wiring work should be done by a certified electrician.
• If someone who does not have the proper qualifications performs the work, perform the following after the
test run is complete.
•
Remove the control box lid, connect a power supply (SINGLE PHASE 50Hz 220-240V or 60Hz 220V) to connections
L, N and ground wire on the power supply terminal block and remote controller to terminal block for remote controller.
When carrying out wiring work around the control box, make sure none of the connectors come undone. Be sure to
attach the control box lid before turning on the power.
12 English
Next, press the inspection/test operation button “ ” on the remote controller. The unit will engage the test operation mode. Press the operation mode selector button “ ” until selecting FAN OPERATION “ ”. Then, press the
ON/OFF button “ ”. The indoor unit fan and drain pump will start up. After confirming drainage
(Fig. 23, Fig. 24)
turn off the power and remove the power supply. Press “ ” to go back to the first mode.
• Note that the fan also starts rotating.
• Attach the control box lid as before.
Drain sockets
(Check the
drainage now.)
Drain pump
location
(mm)
Service drain outlet (with rubber plug)
Plastic container
for pouring
100
(Use this outlet to drain water from
the drain pan)
<Adding water through air outlet>
(Tube should be
about 100 mm long.)
[Method of adding water]
Fig. 23
,
REMOTE
TRANSMISSION
CONTROL
WIRING
FORCED
OFF
Remote
controller wiring
N
L
LN
Ground
Single phase
power supply
50Hz 220-240V
( )
60Hz 220V
CONTROL
REMOTE
TRANSMISSION
WIRING
FORCED
OFF
L
N
Fig. 24
Control
box lid
Terminal block
for remote controller
Remove the control box lid
(take off 2 screws)
Power supply
terminal block
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 pipes and corrode the heat exchanger.
English 13
8. ELECTRIC WIRING WORK
8-1 GENERAL INSTRUCTIONS
• All field supplied parts and materials and electric works must conform to local codes.
• Use copper wire only.
Wiring diagram label” attached to the control box lid.
• For electric wiring work, refer to also
• For remote controller wiring details, refer to the installation manual attached to the remote controller.
• All wiring must be performed by an authorized electrician.
• This system consists of multiple indoor units. Mark each indoor unit as unit A, unit B..., and be sure the
terminal board wiring to the outdoor unit and BS unit are properly matched. If wiring and piping between
the outdoor unit and an indoor unit are mismatched, the system may cause a malfunction.
• 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.
• Do not connect the ground wire to gas and water pipes, lightning rods, or telephone ground wires.
might cause explosions or fire if gas leaks.
• Gas pipes
• Water pipes : no grounding effect if hard vinyl piping is used.
• Telephone ground wires or lightning rods : might cause abnormally high electric potential in the ground
during lighting storms.
:
8-2 ELECTRICAL CHARACTERISTICS
Units Power supply Fan motor
Model Hz Volts Voltage range MCA MFA kW FLA
FXZQ20MVE
FXZQ25MVE 0.8 16 0.055 0.6
FXZQ32MVE 0.8 16 0.055 0.6
FXZQ40MVE 0.8 16 0.055 0.6
FXZQ50MVE 0.9 16 0.055 0.7
FXZQ20MVE
FXZQ25MVE 0.8 16 0.055 0.6
FXZQ32MVE 0.8 16 0.055 0.6
FXZQ40MVE 0.8 16 0.055 0.6
FXZQ50MVE 0.9 16 0.055 0.7
MCA: Min. Circuit Amps (A) MFA: Max. Fuse Amps (A)
kW: Fan Motor Rated Output (kW) FLA: Full Load Amps (A)
50 220-240
60 220
“
0.8 16 0.055 0.6
Max. 264
Min. 198
0.8 16 0.055 0.6
Max. 242
Min. 198
8-3 SPECIFICATIONS FOR FIELD SUPPLIED FUSES AND WIRE
Model
Field fuses
FXZQ20·25·32·40·50
MVE
Allowable length of transmission wirings and remote controller wiring are as follows.
(1) Outdoor unit-Indoor unit: Max. 1000m (Total wiring length: 2000m)
(2) Indoor unit-Remote controller Max. 500m
NOTE
1. Shows only in case of protected pipes. Use H07RN-F in case of no protection.
2. Vinyl cord with sheath or cable (Insulated thickness : 1mm or more)
14 English
16A
Power supply wiring
Wire Size, Length Wire Size
H05VV-U3G
NOTE 1)
Wire size and
length must
comply with
local codes.
Remote controller wiring
Transmission wiring
Sheathed wire
(2 wire)
NOTE 2)
0.75-1.25 mm
2
CAUTION
• Arrange the wires and fix a lid firmly so that the lid does not float during wiring work.
• Do not clamp remote controller wiring and transmission wiring together with power supply wiring. Doing so
may cause malfunction.
• Remote controller wiring and transmission wiring should be located at least 50 mm from power supply wiring. Not following this guideline may result in malfunction due to electrical noise.
9. WIRING EXAMPLE AND HOW TO SET THE REMOTE CONTROLLER
9-1 HOW TO CONNECT WIRINGS
Methods of wiring power supply, connecting transmission and remote controller wiring
• Power supply wiring and ground wire
Remove the control box lid and connect wires to the power supply terminal block (3P) inside. And connect
the ground wire to the terminal block. In doing this, pull the wires inside through the hole and fix the wires
securely with the included clamp (4).
Give enough slack to the wires between the clamp (4) and power supply terminal block. (Use Fig. 27 as a
guide and allow at least 80 mm for removing the sheath.)
• Transmission wiring and remote controller wiring
Remove the control box lid and pull the wires inside through the hole and connect to the terminal block for
remote controller (6P). (no polarity) Securely fix the remote controller wiring and the transmission wiring
with the included clamp (4).
Give enough slack to the wires between the clamp (4) and the terminal block for the remote controller.
• After connection, attach sealing material (12).
• Be sure to attach it to prevent the infiltration of water as well as any insects and other small creatures from
the outside. Otherwise a short-circuit may occur inside the control box.
CAUTION FOR WIRING
• For connection to the terminal block, use ring type crimp style terminals with insulation sleeve or insulate
the wirings properly.
Insulation sleeve
Ring type crimp
style terminal
Fig. 25
• Connect the terminal as shown in Fig. 26.
• Do not carry out soldering finish when stranded wires are used. (Otherwise, the loosening of wires may
result in abnormal heat radiation.)
Wiring
Use wires the same in size
(if the air conditioner is in
simultaneous multi operation)
Fig. 26
English 15
(Abnormal heating may occur if the wirings are not tightened securely.)
• Use the required wirings, connect them securely and fix these wirings securely so that external force may
not apply to the terminals.
• Use a proper screw driver for tightening the terminal screws.
If an improper screw driver is used, it may damage the screw head and a proper tightening cannot be carried out.
• If a terminal is over tightened, it may be damaged.
Refer to the table shown below for tightening torque of terminals.
Tab le 4
Tightening torque (N·m)
Terminal block for remote controller and transmission wirings 0.88 ± 0.08
Terminal for power supply 1.47 ± 0.14
Earth terminal 1.47 ± 0.14
• Do not carry out soldering finish when stranded wirings are used.
WARNING
• When wiring, form the wirings orderly so that the control box lid can be securely fastened. If the control
box lid is not in place, the wirings may come out or be sandwiched by the box and the lid and cause electric shocks or a fire.
Precautions to be taken for power supply wiring
Use a round crimp-style terminal for connection to the power supply terminal block. In case it cannot be
used due to unavoidable reasons, be sure to observe the following instructions.
Be sure to peel off the sheath of power supply wiring more than 80 mm. (Refer to Fig. 27)
Attach insulation sleeve
Round crimp-style terminal
Power supply wiring and ground wire
or more
Fig. 27
• For remote controller wiring, refer to the “INSTALLATION MANUAL OF REMOTE CONTROLLER.”
attached to the remote controller.
• Never connect power supply wiring to the terminal block for remote controller. A mistake of the
sort could damage the entire system.
• Use only specified wire and tightly connect wires to terminals. Be careful wires do not place external
stress on terminals. Keep wiring in neat order and so as not to obstruct other equipment such as popping
open the control box lid. Make sure the lid closes tight. Incomplete connections could result in overheating, and in worse case, electric shock or fire.
mm
80
16 English
(accessory)
Clamp(4)
(Big)
Remote controller and transmission wiring
Remote controller wiring
Transmission wiring
Note
10~15
mm
After clamping
Clamp(4)(Small)
to wire sheath,
(accessory)
Clamp(4)
(Small)
clamp the wire
sheath with
Clamp(4)(Big)
to clamp
material.
Be sure to clamp
wire sheath.
Clamp
material
After securing the
clamp (4) to clamp
material, cut off
any extra material
Power supply wiring
CONTROL
REMOTE
TRANSMISSION
WIRING
FORCED
OFF
Terminal block for
remote controller (6P)
Control box lid
Remove the
control box lid
(take off 2
screws)
REMOTE
CONTROL
TRANSMISSION
WIRING
FORCED
How to connect terminal block (6P)
for remote controller and
transmission wiring
Wiring diagram label
(Back side of control box lid)
OFF
Note
N
L
10~15
mm
LN
How to connect power supply
terminal block with ground wire (3P)
Be sure to attach it to prevent the infiltration of
Note
water as well as any insects and other small
creatures from the outside. Otherwise a
short-circuit may occur inside the control box.
(accessory)
Sealing material (12)
Attach completely to
hole of wiring without
leaving any space
(Outside)
Wiring
(Inside)
Sealing
material(12)
(accessory)
Wiring to
outside
Clamp
material
Power supply
wiring
Clamp(4)
(Big)
(accessory)
Fig. 28
Power supply
terminal block
Be sure to clamp
wire sheath.
After securing the
clamp (4) to clamp material,
cut off any extra material
[(ex.) How to attach sealing materials]
CAUTION
• When clamping wiring, use the included clamping material to prevent outside pressure being exerted on
the wiring connections and clamp firmly. When doing the wiring, make sure the wiring is neat and does not
cause the control box lid to stick up, then close the cover firmly.
• When attaching the control box lid, make sure you do not pinch any wires.
After all the wiring connections are done, fill in any gaps in the through holes with putty or insulation (procured locally) to prevent
•
small animals and insects from entering the unit from outside. (If any do get in, they could cause short circuits in the control box.)
• Outside the machine, separate the weak wiring (remote controller cord) and strong wiring (interunit,
ground, and other power wiring) at least 50 mm so that they do not pass through the same place together.
Proximity may cause electrical interference, malfunctions, and breakage.
English 17
9-2 WIRING EXAMPLE
• Fit the power supply wiring of each unit with a switch and fuse as shown in the drawing.
COMPLETE SYSTEM EXAMPLE (3 systems)
Power supply
Main
switch
Outdoor unit
Power supply wiring
Transmission and remote controller wiring
Switch
Fuse
BS unit
(Only for Heat
recovery system)
Indoor unit
Remote controller
Fig. 29
1. When using 1 remote controller for 1 indoor unit. (Normal operation)
Power supply
220-240V
~
50Hz
or
220V
~
LN
Outdoor unit
Control box
IN/D OUT/D
F1 F2 F1 F2
No. 1
System
60Hz
Indoor
unit A
L N
P1P2F1F2T1T
P1P
2
2
Indoor
unit B
L N
P1P2F1F2T1T
P1P
2
Indoor
unit C
2
2. For group control or use with 2 remote controllers
Power supply
220-240V
~
50Hz
or
220V
LN
~
Outdoor unit
Control box
IN/D OUT/D
F1 F2 F1 F2
No. 2
System
Note: It is not necessary to designate indoor unit
address when using group control.
The address is automatically set when power is
activated.
60Hz
Indoor
unit A
L N
P1P2F1F2T1T
2
Indoor
unit B
L N
P1P2F1F2T1T
Indoor
unit C
2
L N
L N
P1P2F1F2T1T
P1P
P1P2F1F2T1T
2
L N
P1P2F1F2T1T
Most
2
downstream
Indoor unit
2
P1P
2
Fig. 30
2
L N
P1P2F1F2T1T
Most
2
downstream
Indoor unit
P1P
2
P1P
2
P1P
2
For use with 2
remote controllers
Fig. 31
18 English
3. When including BS unit
Power supply
220-240V
50Hz
or
220V
60Hz
Indoor unit A
LN
Outdoor unit
Control box
IN/D OUT/D
F
1 F2 F1 F2
BS unit
No. 3
System
LN LN
P1P2F1F2T1T
Control box
F
1 F2 F1 F2
2
IN/DOUT/D
P1P2F1F2T1T
BS unit
Control box
IN/DOUT/D
F
1 F2 F1 F2
Most
2
downstream
indoor unit
P1P
2
P1P
2
Fig. 32
[PRECAUTIONS]
1. All transmission wiring except for the remote controller wires is polarized and must match the terminal
symbol.
2. A single switch can be used to supply power to units on the same system. However, branch switched and
branch circuit breakers must be selected carefully.
3. Do not connect the ground wire to gas or water pipes, lightning rods or telephone ground wires. Incomplete grounding may result in electric shocks.
9-3 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
(1) Insert a screwdriver into the recess between the upper and lower part of remote controller and, work-
ing from the 2 positions, pry off the upper part. (The remote controller PC board is attached to the upper
part of remote controller.) (Refer to Fig. 33)
(2) Tu rn the main/sub changeover switch on one of the two remote controller PC boards to “S”. (Leave the
switch of the other remote controller set to “M”.) (Refer to Fig. 34)
Insert the screwdriver
here and gently work
off the upper part of
remote controller.
Upper part of
remote controller
Lower part of
remote controller
Fig. 33
(Factory setting)
(Only one remote
controller needs
to be changed if
factory settings
have remained
untouched.)
S
M
S
M
Remote
controller
PC board
Fig. 34
Wiring Method (See “ELECTRIC WIRING WORK”)
(3) Remove the control box lid.
(4) Add remote controller 2 to the terminal block for remote controller (P
, P2) in the control box.
1
(There is no polarity.) (Refer to Fig. 31 and Table 8-3)
English 19
9-4 COMPUTERISED CONTROL (FORCED OFF AND ON/OFF OPERATION)
(1) Wire specifications and how to perform wiring
• Connect the input from outside to terminals T1 and T2 of the terminal board for remote controller.
Wire specification Sheathed vinyl cord or cable (2 wire)
T2T1F2
FORCED
OFF
Input A
(2) Actuation
• The following table explains FORCED OFF and ON/OFF OPERATIONS in response to input A.
FORCED OFF ON/OFF OPERATION
Input “ON” stops operation (impossible by remote controllers). Input OFF → ON turns ON unit.
Input OFF enables control by remote controller Input ON → OFF turns OFF unit.
(3) How to select FORCED OFF and ON/OFF OPERATION
• Turn the power on and then use the remote controller to select operation.
Gauge
Length Max. 100 m
External terminal
0.75 - 1.25 mm
Contact that can ensure the minimum applicable
load of 15V DC, 1 mA.
2
9-5 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.
10. INSTALLATION OF THE DECORATION PANEL
Caution:
With a wireless remote controller, field setting and test operation cannot be performed without
attaching the decoration panel.
<Read “12. TEST OPERATION” before making a test run without attaching the decorated panels.>
Refer to the installation manual attached to the decoration panel.
After installing the decoration panel, ensure that there is no space between the unit body and decoration
panel.
11. FIELD SETTINGS
CAUTION
When performing field setting or test operation without attaching the decoration panel, do not
touch the drain pump. This may cause electric shock.
• Check that the outdoor unit has been wired properly.
(1) Make sure the control box lids are closed on the indoor and outdoor units.
(2) Field settings must be made from the remote controller and in accordance with installation con-
ditions.
• Settings can be made by changing the “Mode No.”, “FIRST CODE NO.” and “SECOND CODE NO.”.
• The “Field Settings” included with the remote control lists the order of the settings and method of operation.
Setting is made in all units in a group. To set for individual indoor units or to check the setting, use the
mode No. (with “2” in upper digit) in parentheses ( ).
11-1 SETTING AIR OUTLET DIRECTION
• See the installation manual included with the sealing material of air discharge outlet kit, sold separately
and technical guide, for ceiling height settings for two and three-direction air discharge.
(The SECOND CODE NO. is factory set to “01” (all round outlet) before shipping.)
20 English
11-2 SETTING FOR OPTIONS
• For settings for options, see the installation instructions provided with the option.
11-3 SETTING AIR FILTER SIGN
• Remote controllers are equipped with liquid crystal display air filer signs to display the time to clean air filters.
• Change the SECOND CODE NO. according to “Table 5” depending on the amount of dirt or dust in the
room.
(SECOND CODE NO. is factory set to “01” for air filter contamination-light.)
Tab le 5
Setting
Spacing time of display air filter
sign (long life type)
Air filter contamination-light Approx. 2500 hrs
Air filter contamination-heavy
Approx. 1250 hrs 02
Mode No.
10 (20) 0
FIRST CODE
NO.
SECOND
CODE NO.
01
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.
• Set the remote controller to the field set mode.
For details, refer to the “HOW TO SET IN THE
FIELD”, in the remote controller manual.
• When in the field set mode, select mode No. 12, then
set the first code (switch) No. to “1”. Then set second
code (position) No. to “01” for FORCED OFF and
“02” for ON/OFF OPERATION. (FORCED OFF at
factory set)
SECOND
CODE
NO.
FIRST
CODE
NO.
Mode
No.
FIELD
SET
MODE
12. TEST OPERATION
Refer to the installation manual of the outdoor unit.
• The operation lamp of the remote controller will flash when a malfunction occurs. Check the error code on
the liquid crystal display to identify the point of trouble. An explanation of malfunction codes and the corresponding trouble is provided in “CAUTION FOR SERVICING” of the outdoor unit.
If any of the items in Table 6 are displayed, there may be a problem with the wiring or power, so check the
wiring again.
Tab le 6
Remote control display Content
“Concentrated Management” is lit up • There is a short circuit at the FORCED OFF terminals (T1, T2)
• The power on the outdoor unit is off.
“U4” is lit up
“UH” is lit up
• 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.
No display
• 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.
• If the decoration panel is installed on the indoor unit during the test run, check the operation of the swing
flap on the panel.
• In order to protect the indoor unit, instruct the customer not to operate the air conditioner until the interior
work is completed if the interior work has not been finished at the end of the test run.
(If the air conditioner is operated, substances discharged from the paint, adhesive, etc. can contaminate
the indoor unit, and they may cause splashing or leakage of water.)
NOTE
• After the test run is finished, check the items listed in “b. Items to be checked at time of delivery”.
English 21
3P184443-5S EM09A013A
(1511) HT
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