MODELS
Floor standing duct type
FXVQ125MY1
FXVQ200MY1
FXVQ250MY1
FXVQ400MY1
FXVQ500MY1
FXVQ500MY16
INSTALLATION MANUAL
SYSTEM Air Conditioners
CAREFULLY READ THESE INSTRUCTIONS BEFORE INSTALLATION.
KEEP THIS MANUAL IN A HANDY PLACE FOR FUTURE REFERENCE.
FX VQ125MY1 FXVQ200MY1 F XVQ 250MY1 FX VQ4 00 MY1 FXVQ500MY1 FXVQ 50 0MY16
VRV System
air conditioner
Installation
manual
CONTENTS
1. SAFET Y PRECAUTIONS ................................................. 1
2. BEFORE INSTALLATION ................................................. 2
3. CARRY-IN METHOD ........................................................ 3
4. INSTALLATION SITE ....................................................... 3
5. CAUTION AT INSTALLATION .......................................... 4
6. REFRIGERANT PIPING ................................................... 4
7. DRAIN PIPING ................................................................. 6
8. ELECTRIC WIRING.......................................................... 6
9.
FIELD SETTING AND CONTROL WIRING ......................... 9
10.
TRIAL OPERATION .............................................................10
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 classies the precautions into WARNINGS and
CAUTIONS.
Be sure to follow all the precautions below: They are all
important for ensuring safety.
WARNING ......... 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 qualied personnel to carry out
installation work.
Improper installation may result in water leakage, electric
shocks or a re.
• Perform installation work in accordance with this installation
manual.
Improper installation may result in water leakage, electric
shocks or a re.
• 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
deciency.
• Be sure to use only the specied parts and accessories for
installation work.
Failure to use the specied parts may result in the air
conditioner falling down, water leakage, electric shocks, a
re, etc.
• Install the air conditioner on a foundation that can
withstand its mass.
It may lead to vibration of indoor units and cause
unpleasant chattering noise.
• Carry out the specied 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
qualied 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 sufcient length and never connect
additional wiring to make the length sufcient.
Insufcient capacity of the power supply circuit or improper
electrical construction may lead to electric shocks or a re.
(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”.
• 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 re.
• Be sure to install an earth leakage circuit breaker.
Failure to do so may cause electric shocks and a re.
• Disconnect the power supply before touching the electric
components.
If you touch the live part, you may get an electric shocks.
• Make sure that all wiring is secure, using the specied
wiring and ensuring that external forces do not act on the
terminal connections or wiring.
Incomplete connection or xing may cause an overheat or
a re.
• When wiring between the indoor and outdoor units, and
wiring the power supply, form the wiring orderly so that the
control box lid can be securely fastened.
If the control box lid is not in place, overheat of the
terminals, electric shocks or a re 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 re.
• 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 re, such
as a fan heater, stove or cooker.
• Never directly touch any accidental leaking refrigerant.
This could result in severe wounds caused by frostbite.
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.
1 English
• 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 sufcient to eliminate the noise.)
• 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 ammable gases may leak, where carbon bre
or ignitable dust is suspended in the air or where volatile
ammables, such as thinner or gasoline, are handled.
If the gas should leak and remained around the air
conditioner, it may cause ignition.
2. BEFORE I N STALLATI O N
• Make sure to use the R410A refrigerant before the
installation work.
(Otherwise, the unit can not operate normally.)
• For installation of outdoor unit, refer to the installation
manual attached to the outdoor unit.
• Do not throw away the accessories required for installation
until the installation is nished.
2-1 PRECAUTION
• Be sure to instruct the customer how to properly operate
the system (particularly the cleaning of air lter, operation
method, temperature adjusting method) showing the
attached operation manual to the person.
• Do not install the unit where the atmosphere is salty
such as near the seaside, where the voltage frequently
uctuates or in a vehicle or a boat.
2-2 ACCESSORIES
Check if the following accessories are included in the indoor
unit.
Insulation
Name Connection pipings
1 pc.
Quantity
Shape
Location Partition plate
(125-250 type)
(Gas
piping)
For each 1 pc.
(400 · 500 type)
(Liquid
piping)
(Gas
piping)
Drain
plug cap
for Drain
plug
1 pc. 1 pc. 3 pcs. 1 pc.
Clamp
Hanging
bolt for fan
motor
(only
50 0MY16)
Name Bolts (for anges)
Quantity
Shape
Location
Name Nuts (for anges)
Quantity
Shape
Location
14 pcs.
(125 · 200 type)
Partition plate (However, 2 bolts and 2 nuts are used for
ange temporary xing.)
14 pcs.
(125 · 200 type)
Partition plate (However, 2 bolts and 2 nuts
are used for ange temporary xing.)
30 pcs.
(250 type)
30 pcs.
(250 type)
18 pcs.
(40 0 type)
M8
18 pcs.
(40 0 type)
M8×20
(500 type)
36 pcs.
36 pcs.
(500 type)
[Others]
• Operation
manual
Installation
•
manual
Stay for
control panel
2-3 CARRY OUT THE WORK GIVING
CAUTION TO THE FOLLOWING ITEMS
AND AFTER THE WORK IS COMPLETED
CHECK THESE AGAIN.
1. Items to be checked after the installation work is
completed
Items to be checked In case of defective
Are the air conditioner rigidly
xed?
Are the installation work of the
air conditioner complete?
Have you carried out a
leakage test with the test
pressure specied in the
outdoor unit installation
manual?
Is the insulation of refrigerant
piping and drain piping
completely carried out?
Does the drain ow out
smoothly?
Is the power supply voltage
identical to that stated in the
manufacturer’s label on the air
conditioner?
Are you sure that there is no
wrong wiring nor piping or no
loose wiring?
Is earthing completed? Danger in case of leakage
Are the sizes of electric wiring
according to the specication?
Is any of air outlets or inlets of
the air conditioner blocked with
obstacles?
(It may lead to capacity drop
due to fan speed drop or
malfunction of equipment.)
Have you recorded the
refrigerant piping length and
the refrigerant charge added?
Make sure to recheck the items of “SAFETY
PRECAUTIONS”.
Drop · vibration · noise
Does not operate · burnout
Does not cool / Does not
heat
Water leakage
Water leakage
Does not operate · burnout
Does not operate · burnout
Does not operate · burnout
Does not cool / Does not
heat
Refrigerant charge amount
is not clear
Check
column
2English
2. Items to be checked at delivery
Items to be checked
Have you carried out eld setting? (if necessary)
Are the control box lid, the air lter and the suction grille
attached?
Does the cool air discharge during the cooling
operation and the warm air discharge during heating
operation?
Have you explained how to operate the air conditioner
showing the operation manual to the customer?
Have you explained the description of cooling and
heating given in the operation manual to the customer?
Have you handed the operation manual and the
installation manual to the customer?
Check
column
Points of the operation explanation
In addition to the general usage, since the items in the
operation manual with the
WARNING and CAUTION
marks are likely to result in human bodily injuries and
property damages, it is necessary not only to explain
these items to the customer but also to have the
customer read them.
It is also necessary to explain the items of “NOT
MALFUNCTION OF THE AIR CONDITIONER” to the
customer and have the customer read them carefully.
3. CARRY-IN METHOD
Note
Do not throw away the accessories required for installation
until the installation is nished.
• Choose the carry-in route of the indoor unit.
• When lifting the unit with a crane, use belt sling and
perform lifting the unit as shown in the gure below.
Belt sling
Put a rag or a corrugated
fiberboard to prevent damage of
the suction grille and the control
panel part.
4. INSTALLATION SITE
Note
Do not apply force on the resin parts in case of carrying the
indoor unit when and after unpacking.
(1) Select an installation site where the following conditions
are satised and obtain the customer’s approval before
installation.
• The foundation is strong enough to support the weight
of the unit and the oor is at to prevent vibration and
noise generation.
• The place where the cold (warm) air is spread all over
the room.
(In case of free blow by the plenum chamber)
• The place where the condensate can be properly
drained.
• The place where there is no possibility of ammable
gas leak.
• The place where is not heat affected by other heating
equipment.
• The space around the unit is adequate for servicing
and the minimum space for air inlet and air outlet is
available.
• The place where the piping length between indoor unit
and outdoor unit is within the allowable limit.
(Refer to the installation manual attached to the
outdoor unit.)
(2) After installation, remove the shipping brackets attached
to the bottom frame.
(3) Secure the unit to its base using foundation bolts.
4-1 EXAMPLE OF REQUIRED SPACE
• Select a suitable pattern from the gure below according
to local space in view of walkway and ventilation when
installing.
(If the given eld space fails to meet the conditions of work
in this gure, contact the dealer.)
Piping connection A B
Left side 500 mm 100 mm
Right side 100 m m 500 mm
Make sure to sling over the hanger.
φ15 hole (125
φ17 hole (400 · 500 type
or more
A
900 mm or more
Foundation bolts fixing plate
Indoor
unit
<
Front
side
(
4 Portions
>
)
-
250 type
B
)
)
100 mm
or more
or more
3 English
5. CAUTION AT INSTALL AT I ON
5-1 HOW TO REPLACE PULLEY
<125-250 type>
(1) Remove the suction grille.
(2) Remove the protection net. Then remove the cushioning
material on the protection net.
(3) Remove the front panel (upper).
(4) Remove the front panel (lower).
(5) Put the iron plate, which must be wider than the fan
motor, under the fan motor, and on the heat exchanger
for protection for its n. (Iron plate must be supplied in the
eld.)
(6) Remove the terminal for the fan motor lead wire from the
magnet switch.
(7) Pull out the fan motor lead wire to the fan housing parts,
and let it out of the unit from the opening part on the front
plate (upper).
(8) Remove the nuts of the motor base.
(9) Remove the belt. Hold the fan motor base rmly when
working so that it may not move suddenly.
(10) Slide the fan housing assembly on the iron plate on which
the fan motor is put (the above procedure (5)) frontward
slowly. Work must be conducted by more than 3 persons.
One of them must hold the motor base, and two or more
of them must hold the fan housing.
(11) Move the fan housing assembly to the location where can
be worked and replace the pulley.
(12) After replacing, follow the above procedure in the reverse
order.
<400 · 500 type>
Follow the above procedure (1)-(4), (6), (7), (10), (11), (12) in
th e order.
(2)
(3)
Front panel
(
)
upper
(1)
Suction
grille
(4)
Front panel
(
)
lower
Fan motor lead wire
5-2 PARALLELISM OF PULLEY
• Adjust the parallelism of the pulley between the fan and
the motor so as to meet the standard as below.
Fan pulley
Parallelism Less than 10
Protection net
(5)
Iron plate
(
Field supply
(10)
(7)
(6)
K
K
K
K
K
K (arc-m inute) Note
)
Motor pulley
Equivalent to 3 mm
displacement per 1 m
(8)
(9)
Fan
motor
Heat
exchanger
5-3 TENSION OF V BELT
• Tension of a V belt must meet the deection load (W) as
shown.
Calculate the required deection length (L) by the equation
(1), its tolerance must be within the range as below.
W
C
L
L= 0.016 × C (mm)
C : Distance between the shafts of the pulley (mm
Types of V belt Deection load W (N)
A type 13.7-20.6
B type 22.6-34.3
Deflection load
(1)
)
Note
• It is recommended to check the tension as above after 2428 hours of the operation.
When the new belts are used, it is preferable to adjust to
about 1.3 times the maximum value of Deection load (W).
6. REFRIGERANT PIPING
• For the refrigerant piping of the outdoor unit, refer to the
installation manual attached to the outdoor unit.
• Make sure to use R410A as refrigerant before the
installation work. (Otherwise, the unit can not operate
normally)
• Make sure to insulate the piping on both the liquid side and
the gas side. Otherwise, water leakage may be caused.
Use a heat insulating material sufciently resistant to
120 °C. Reinforce the refrigerant piping according to the
installation environment. Otherwise, condensation may
form on the surface of the insulation.
CAUTION
This unit is for using R410A only.
Make sure to follow the items as shown in below when
working.
• Use the pipe cutter and the aring tool that are
exclusively used for R410A.
• At are connection, apply ETHER oil or ESTER oil to
the are section.
• Protect the piping by a pinch or taping to prevent invasion
of contamination, moisture and dusts into the piping.
6-1 MATERIAL OF PIPING
• Use the copper tube according to the following table.
Indoor unit
capacity
125 t yp e
200 type
250 type
400 type
500 type
Piping on gas side Piping on liquid side
φ15.9 × t1.0 mm φ9.5 × t0.8 mm
φ19.1 × t1.0 mm φ9.5 × t0.8 mm
φ22.2 × t1.0 mm φ9.5 × t0.8 mm
φ28.6 × t1.0 mm φ12.7 × t0.8 mm
φ28.6 × t1.0 mm φ15.9 × t1.0 mm
Piping size
4English
6-2 HOW TO WORK THE REFRIGERANT
PIPING
Remove the pinched pipings brazed to the end of the internal
piping.
Braze and connect the standard accessory piping.
Do not directly
flame the pipe
fixing plate.
Do not directly
flame the
solenoid valve and
motor operated valve.
Do not directly flame the
drain pan and thermistor.
Air filter must
be removed.
Connection pipings
Remove the pinched pipings.
6-3 PIPING CONNECTION
CAUTION
Do not use anti-oxidants when brazing the piping joints.
Residue can clog pipings and break equipment.
• Be sure to perform a nitrogen blow when brazing
Brazing without performing nitrogen replacement or
releasing nitrogen into the piping will create large
quantities of oxidized lm on the inside of the pipings,
( )
adversely affecting valves and compressors in the
refrigerating system and preventing normal operation.
Note
• For nitrogen replacement, refer to the installation work
manual. (Contact the dealer.)
• When brazing pipes while owing nitrogen, set the nitrogen
pressure to 0.02 MPa or less using a pressure reducing
valve (to the extent that your cheeks feel breeze).
• Do not use a ux when brazing the refrigerant system. Use
phosphor copper brazing (
/795: ISO 3677
) which does not require ux.
Using a chorine ux may cause the pipes to corrode,
and if it contains uoride, it may cause the refrigerant
lubricant to deteriorate, adversely affecting the
( )
refrigerant piping system.
Refrigerant piping
CAUTION
Do not let any refrigerant other than R410A enter the
refrigerant system.
Ventilate if the refrigerant gas leaks during work.
BCup-2: JIS Z 3264/B-Cu93P-710
Pressure reducing valve
Location to be brazed
Nitrogen
Taping
Manual valve
Nitrogen
6-4 PROCESSING METHOD OF CONNECTION
PIPING
• See the following table for the Processing connection
piping.
• For right side piping, replace the partition bush xed on the
right side panel with the bush for hole xed on the left side
panel.
Piping
on liquid
side
(125-250
type)
Piping on
liquid side
(400 · 500
type)
Piping on
gas side
(125 -5 00
type)
Left side piping connection
• Pass the piping from
the hole on the left side
into the unit, conduct
sleeve are process
and brazed connection.
Note
Inside dia. of Flare
(
See the table for
flare part dimensions
Connect the accessory
pipes and bring them
outside of the unit.
Right side piping connection
• Pass the piping from
the hole on the right
side into the unit,
conduct sleeve are
process and brazed
connection.
)
Inside dia. of Flare
(
See the table for flare
)
part dimensions
Modify the accessory left
side piping and use it for
the right side.
For left side
Cut the
piping
Connection side
( )
inside the unit
Flare the pipe end or
use the fitting and connect
the piping by brazing.
)
Note
)
For right side
6-5 THE TABLE FOR FLARE PART
DIMENSIONS
Refer to the below table for are part dimensions
(Unit: mm)
Piping
Indoor
unit
capacity
125 t yp e
200 type
250 type
size
d0 d1
φ9.5
×t0.8 or
more
Inside dia. of
are
Tolerance
+0.1
9.64
Note
Braze by socket if sleeve are process cannot be conducted.
CAUTION
Thermal insulation of the eld piping must be carried out
including the piping connection parts. Otherwise, it may
cause heat injury by condensation or connecting to the
exposed piping.
0
Allowance of
inserting part
L
Tolerance
+1. 5
7
0
Bend
radius
R18
Flare shape
C1220T
φd1
φd0
L
• Secure the piping so that it does not touch the wiring.
• Insulation of pipes must be perfectly carried out without
leaving any clearance to avoid condensation.
• When connecting liquid and gas connection pipings,
insulate all the internal pipings with eld supplied insulation
material for refrigerant pipings. (See following sketch.)
5 English
<125-250 type>
More than 40 mm
Downward inclination
1/100 or more
Unit bottom line
Indoor
unit
Gas piping
Liquid piping
Connection piping
(Accessory)
More than 40 mm
Refrigerant piping
(Field supply)
Refrigerant
piping insulation
(Field supply)
<400 · 500 type>
More than 40 mm
Gas piping
Connection piping
(Accessory)
Liquid piping
More than 40 mm
Refrigerant
piping insulation
(Field supply)
7. DRAIN PIPING
7-1 INSTALL DRAIN PIPING
• Install drain piping is order to ensure proper drainage and
insulate piping in order to prevent condensation.
• Keep the piping length as short as possible and slope the
pipe with a gradient of 1/100 or more. Do not create any air
accumulated pocket in the piping.
• Use the pipe size equivalent or larger to the pipe
connection size of the unit.
• The drain connection is available from both (left and right)
sides.
• For the right side connection, change the drain plug from
right to left.
• For piping goes through the indoor, make sure to insulate
the indoor drain socket to the end of socket.
• When connecting the drain piping, insulate the drain plug
on the opposite side of drain piping connection completely
with the attached insulation.
• Always make a drain trap at the drain outlet.
Check
• After completion of drain piping, let water ow into the
drain pan and check for drain and water leakage from the
piping connection area.
Drain plug cap
(accessories)
Insulation for
drain plug
(accessories)
The end of the drain port
must be always kept in the
water to prevent backflow of
odor from the sewage.
Remove the released
paper, and make sure
to label on the unit.
Drain plug
50 mm
or more
100 mm
or more
Drain trap
(for Left side connection)
Drain trap
make a
drain trap
Drain piping
CAUTION
• The connection of the drain piping
Do not directly connect the drain piping to sewerage, which
odor may smell like ammonia.
Sewerage may contain it, which may pass through the
drain piping, and result in corrosion of the indoor unit heat
exchanger.
8. ELECTRIC WIRING
CAUTION
• Install earth leakage circuit breaker.
It is our obligation to mount earth leakage circuit
breaker in order to prevent accidents such as electric
shocks and/or re.
• All eld wiring and components must be installed by a
licensed electrician and must comply with relevant local
and national regulations.
• Use copper conductors only.
• Be sure to install an earth leakage breaker.
(Failure to install an earth leakage breaker may result in
electric shocks, or re.)
• Always ground wires. (In accordance with national
regulations of the pertinent country.)
• Do not connect the ground wire to gas pipe, sewage pipe,
lightning rods, or telephone ground wires.
• Gas pipe: can explode or catch re if there is a gas
leak.
• Sewage pipes: no grounding effect is possible if hard
plastic piping is used.
• Telephone ground wires and lighting rods: dangerous
when struck by lighting due to abnormal rise in
electrical potential in the grounding.
• The eld wiring must be carried out in accordance with the
wiring diagrams and the instructions given below.
• If the fan rotates reversely, change the connection of two
power supply wires out of three.
• For connection to the terminal block, use ring type crimp
style terminal suitable for the wire size.
• Do not close the branch switch and overcurrent circuit
breaker until all the works are completed.
6English
<Method of wiring for the wiring between indoor unit
and outdoor unit, the earth wiring and the power supply
wiring>
(1) Remove the front panel (lower).
(2) Fix the each wire on the control box with the attached
clamp.
(3) For wiring specications, refer to the [DETAILS OF
STANDARD DEVICES].
CAUTION
Apply putty or insulation material (Field supply) without
any clearance on the wiring intake section to prevent small
animals from entering the unit.
(If small animals such as insects enter the inside of the unit, it
may cause short circuit in the control box.)
Connect the wire securely using designated wire and x it
with attached clamp without applying external pressure on
the terminal parts.
Make sure the wiring and the control box lid do not stick up
above the structure, and close the control box lid rmly.
8-1 REMOVE THE FRONT PANEL (LOWER)
When removing the front panel (lower), there is the control
box.
<400 · 500 type>
Wiring from right side
Earth terminal for
Terminal block for the
wiring between indoor
unit and outdoor unit
Control box
Earth terminal
shield wire
Terminal block for
power supply wiring
Pass the attached clamp through
the resin clamp, and bundle each
wiring in one and fix them.
Wiring from left side
Terminal block for the
wiring between indoor
unit and outdoor unit
Pass the attached clamp through
the resin clamp, and bundle each
wiring in one and fix them.
Earth terminal
for shield wire
Earth terminal
Terminal block for
power supply wiring
8-3 EXAMPLE OF WIRING
• The control panel is the standard built-in.
Ex1. When using in pairs
Power
supply
Outdoor unit
Control box
OUT-OUT
IN-OUT
F1 F2 F1 F2
Control box
Front panel (lower
)
Screw
Front panel
(
)
lower
Remove the screw attached
front panel (lower).
8-2 EXTERNAL WIRING METHOD
<125-250 type>
Wiring from right side
Terminal block
for power
supply wiring
Control box
Earth terminal
Wiring from left side
Pass the attached clamp through
the resin clamp, and bundle each
wiring in one and fix them.
Terminal block for the
wiring between indoor
unit and outdoor unit
Pass the attached clamp through
the resin clamp, and bundle each
wiring in one and fix them.
Earth terminal for shield wire
Terminal block
for power
supply wiring
Terminal block for the
wiring between indoor
unit and outdoor unit
Earth terminal
Control box
Earth terminal for
shield wire
Branch switch
Overcurrent
circuit breaker
The wiring between indoor
unit and outdoor unit
Never to connect
high-voltage electricity such
as power supply cables.
Prohibited
Control panel
P1
P2
or
or
L1
L2 L3
F1F2 T1 T2
N
P
N
Indoor unit A
Earth
Ex2. For multiple indoor units
Power
supply
Branch switch
Overcurrent
circuit breaker
Earth
Outdoor unit
Control box
IN-OUT
OUT-OUT
F1 F2 F1 F2
The wiring between indoor
unit and outdoor unit
Never to connect
high-voltage
electricity such as
Prohibited
power supply cables.
The wiring between indoor
F1F2T1T
unit and indoor unit
2
Earth Earth
Control panel
P1
P2
or
or
L2L3 NL1 L2L3 NL1 L2L3 NL1
P
N
Indoor unit A
Control panel
P1
P2
F1F2T1T
or
or
P
N
Indoor unit B
2
Control panel
P1
P2
F1F2T1T
or
or
P
N
Final indoor
unit
2
CAUTION
Do not have low-voltage wires (wiring between units) and other
high-voltage run through the same locations, and there must
be min. 50 mm distance between wires outside of the unit.
Or it may cause a malfunction or a breakdown of the unit by
receiving electrical noise (external noise).
7 English
Ex3. For group control
Power
supply
Outdoor unit
Control box
OUT-OUTIN-OUT
F1 F2 F1 F2
Branch switch
Overcurrent
circuit breaker
L2L3 NL1 L2L3 NL1 L2L3 NL1
Indoor unit A
Earth
The wiring between indoor unit and outdoor unit
Never to connect
high-voltage electricity
Prohibited
such as power supply cables.
Control panel
P2
P1
F1F2T1T
or
or
N
P
2
The wiring between indoor unit and indoor unit
Earth
Indoor unit B
P2
P2
P1
F1F2T1T
or
or
2
N
P
Earth
P1
F1F2T1T
or
or
2
N
P
Final indoor unit
Note
1. It is not necessary to set the indoor unit address for group
control.
(The setting is made automatically when the power supply
is turned on.)
2. Make sure to disconnect the control panel wiring of the
units over the second one.
3. In this case, all indoor units within the group are controlled
by the control panel for the group control.
Ex4. When including BS unit
Prohibited
Power
supply
Branch switch
Overcurrent
circuit breaker
L2L3 NL1
Earth
Outdoor unit
Control box
F1 F2 F1 F2
*Control panel
P2
P1
or
or
N
P
Indoor unit A
OUT-OUTIN-OUT
The wiring between
outdoor unit and BS unit
F1F2T1T
2
Never to
connect
high-voltage
electricity
such as power
supply cables.
BS unit
Control box
IndoorOutdoor
F1 F2 F1 F2
The wiring between
indoor unit and BS unit
Never to connect
high-voltage electricity
Prohibited
such as power supply cables.
8-4 PRECAUTIONS WHEN LAYING POWER
WIRING
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. 1
• Connect the terminal as shown in Fig. 2.
• Do not carry out soldering nish 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. 2
(Abnormal heating may occur if the wirings are not
tightened securely.)
• Use the required wirings, connect them securely and x
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.
Table 1
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 3.55 ± 0.53
• Do not carry out soldering nish 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 re.
8-5 DETAILS OF STANDARD DEVICES
• Refer to the installation manual attached to the outdoor
unit for the details of the wire gauge of the power supply
to the outdoor unit, the earth leakage breaker, the circuit
breaker capacity and wiring.
• Use only the wiring devices specied in the following table
for the wiring between indoor unit and outdoor unit.
• Branch off the exclusive lines for power supply to the
indoor unit according to the following specication.
1. Electrical characteristics
Indoor units Power supply Fan motor
380415V
Voltage
range
Max. 456V
Min. 342V
MCA
TOCA
MFA kW FLA
2.4 2.0 16 0.75 1. 9
Model Hz Volts
FX VQ125MY1
FX VQ2 00 MY1 4.5 3.6 16 1.5 3.6
FX VQ2 50MY1 4.5 3.6 16 1.5 3.6
FX VQ4 00 MY1 9.5 8.0 25 3.7 7. 6
50 Hz
FX VQ5 00 MY1 9.5 8.0 25 3.7 7. 6
FX VQ5 00 MY16 14.5 12.0 40 5.5 11.6
MCA: Min. Circuit Amps (A) MFA: Max. Fuse Amps (A)
TOCA: Total Over Current Amp (A)
kW: Fan Motor Rated Output (kW) FLA: Full Load Amps (A)
8English
2. Specication for eld supplied fuses and wiring
Power supply wiring Transmission wiring
Model
FXVQ125MY1
FXVQ200MY1
FXVQ250MY1
FXVQ400MY1
FXVQ500MY1
FXVQ500MY16
Field fuses
16A
Wiring Size Wiring Size
H05VV
(Note 1)
Wiring size
and length
must comply
with local
codes.
Balanced
type shield
wire
(Note 2)
0.75 − 1.25
mm
2
The lengths of remote controller wiring and transmission
wiring are as follows:
Transmission wiring ...................... Total wiring length 2000 m
• Outdoor unit - Indoor unit .... Max. 1000 m
• Outdoor unit - BS unit .......... Max. 1000 m
• BS unit - Indoor unit ............. Max. 1000 m
• Indoor unit - Indoor unit ....... Max. 1000 m
Note
1. Shows only in case of protected piping. Use H07RN-F in
case of no protection.
2. Use the shield wire. Or it may cause a malfunction or
breakdown of the unit by receiving electrical noise (external
noise)
9.
FIELD SETTING AND CONTROL WIRING
9-1 FIELD SETTING
• Field setting of the following items is required depending
on the installation conditions.
• If optional accessories are mounted on the indoor unit, the
indoor unit setting may have to be changed. Refer to the
installation manual for each optional accessory.
<Procedure of eld setting>
(1) When in the normal mode, press the “
4 seconds or more, and the FIELD SETTING MODE is
entered.
(2) Select the desired MODE NO. with the “
(3) During group control, when setting by each indoor unit
(mode No. 20, 22 and 23 have been selected), press the
“
” button () and select the INDOOR UNIT NO to
be set. (This operation is unnecessary when setting by
group.)
(4) Press the “
” upper button () and select FIRST
CODE NO.
(5) Press the “
” lower button () and select the
SECOND CODE NO.
(6) Press the “ ” button () once and the present
settings are SET.
TEST
(7) Press the “
” button () to return to the NORMAL
MODE.
TEST
” button () for
” button ().
UNIT NO.
SECOND
CODE NO.
FIRST
CODE NO.
UNIT NO.
SETTING
3
4
TEST
1
7
6
5
2
MODE NO.
FIELD
SET
MODE
Note
1. Setting is carried out in the group mode, however, set the
mode number inside the ( ) for individual setting of the
each indoor unit or conrmation after setting.
2. The SECOND CODE NO. is set to in
number when
shipped from the factory.
3. Do not make any settings not given in the table on the
below.
4. Not displayed if the indoor unit is not equipped with that
function.
5. When returning to the normal mode, “88” may be displayed
in the LCD in order for the remote.
<Filter sign setting>
• Settings must be made when changing display interval of
lter sign according to environment and lter type.
Mode
NO.
(N ote .1)
10
(20)
FIRST
CODE
NO.
0
2
3
Description of setting
Filter Contamination-Heavy/
Light
(Setting for spacing time of
display time to clean air lter)
(Setting for when lter
contamination is heavy, and
spacing time of display time to
clean air lter is to be halved)
Remote thermo-controller
(Setup is made when using a
remote thermo-controller.)
Spacing time of display time to
clean air lter count
(Setting for when the lter sign
is not to be used)
SECOND CODE NO.
(Note.2)
01 02
Long
life
type
Approx.
2500
Light
Hrs.
Use Nonuse
Display
Approx.
1250
Heavy
Hrs.
Do not
display
<Automatic reset of power failure>
• For automatic reset of power fault, settings must be made
as shown.
Mode NO.
12(22) 5 None Provided
FIRST CODE
NO.
SECOND CODE NO.
01 02
9 English
9-2 REMOTE CONTROLLER AND
CENTRALIZED CONTROL
<When operating forced OFF or ON/OFF control from the
terminal block (X3M)>
1. Method of wiring and specications
• Remote control can be carried out by connecting input
from outside to terminals T1 and T2 of the terminal block.
Class of wire Vinyl cord with sheath or 2-wire cable
Wire gauge 0.75-1.25 mm
Wire length MAX 100 m
Outside contact
specications
Contact that guarantees minimum applicable
load DC15V · 1 mA
F2 T1 T2
2. Operation procedures
• Operation is as given in the table below for input A of
forced OFF, and ON/OFF control.
For forced OFF For ON/OFF control
Forced OFF (control panel
rejection) by input A “ON”
Control panel acceptance by
input A “OFF”
3. For selecting Forced OFF and ON/OFF control
• Select input by control panel after turning on the power
supp ly.
• Set to the eld set mode by control panel.
(For eld setting, refer to the procedure shown on
previous page.)
• After entering the eld set mode, select mode No.12, set
the rst code No.1, and set the second code No. to “01”
for forced OFF, or to “02” for ON/OFF control.
(Factory setting is set to forced OFF)
<When operating forced OFF, ON/OFF control, operation
display, and malfunction display from the wiring adaptor
for electrical appendices (A2P).>
Refer to “For remote control” in the “VRV Engineering Data”.
<Operation by centralized control>
• When using with the centralized control, remove the
jumper of the group remote control printed circuit board
mounted in the control box.
• If controlled by the centralized control equipment (the
central control panel (optional accessory)), the group NO.
must be set by the control panel.
For details, refer to the instruction of each centralized
control equipment.
2
FORCED
OFF
Input A
Operate by switching input A
from “OFF” to “ON”
Stop by switching input A from
“ON” to “OFF”
10.
TRIAL OPERATION
(1) Conrm that the control box lid of the indoor units and the
outdoor unit are closed.
(2) Perform the test run according to the installation manual
attached to the outdoor unit.
• If the operation lamp on the control panel is ashing, it
indicates malfunction.
Check the error code of the liquid crystal display and
the malfunction source.
For the error code and the details, refer to the
operation manual attached to the indoor unit.
In particular, if an error in the table 1 is displayed, it
may be the error of wiring work or the power supply
may not be turned ON.
(3) Carry out test run according to installation manual
attached to the outdoor unit.
Table 2
Control panel
(remote
controller)
display
“Under
centralized
control”
ashing
“U4”
ashing
“UH”
ashing
NOT
display
E4
• Terminal for forced OFF
(T1·T2) may be short
circuiting.
• The power supply of the
outdoor unit may not turned
ON.
• The power supply of the
outdoor unit may not be
installed yet.
• Misconnection between the
transmission wiring, and the
control panel wiring or the
forced OFF wiring.
• Disconnection of the
transmission wiring.
• The power supply of the
indoor unit is not turned ON.
• The power supply of the
indoor unit may not be
installed yet.
• Misconnection between the
transmission wiring, and the
control panel wiring or the
forced OFF wiring.
• Disconnection of the control
panel wiring.
• A test run is carried out from
outdoor unit in a wrong mode
(other than “standard” mode).
Content Solution
• Fix not to short
circuit.
• Turn on the power
of outdoor unit.
• Proceed installation
work for power
supply.
• Fix the wiring.
• Turn on the power
of indoor unit.
• Proceed installation
work for power
supply.
• Fix the wiring.
• Select the
“standard” mode,
then test run again
from outdoor unit.
WARNING
Even though the test run is nished, if the interior nish work
is not completed, instruct the user not to operate until the
work is completed for protecting the indoor unit.
Paint or adhesive used for interior nish work may stain the
indoor unit, which may result in water splash or leak.
10English
3P345056-4F
EM13A0 04B
[15 11]
HT
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