contents 1. safety precautions
01_EN_3P258319-14G.fm Page 1 Wednesday, March 18, 2015 7:48 PM
VRV SYSTEM Inverter Air Conditioners
Installation manual
CONTENTS
1.
2.
3.
4.
5.
6.
7.
8.
9.
SAFETY PRECAUTIONS................................................ 1
BEFORE INSTALLATION................................................ 2
SELECTING INSTALLATION SITE ................................. 3
PREPARATIONS BEFORE INSTALLATION ................... 3
INDOOR UNIT INSTALLATION....................................... 4
REFRIGERANT PIPING WORK ..................................... 4
DRAIN PIPING WORK .................................................... 6
ELECTRIC WIRING WORK ............................................ 6
WIRING EXAMPLE AND HOW TO SET
THE REMOTE CONTROLLER ....................................... 7
10. FIELD SETTING.............................................................. 9
11. TEST OPERATION ......................................................... 9
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.
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 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.
English
•
•
•
•
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.
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”.
• 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.
• 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 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 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 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.
• Never directly touch any accidental leaking refrigerant. This
could result in severe wounds caused by frostbite.
1
01_EN_3P258319-14G.fm Page 2 Wednesday, March 18, 2015 7:48 PM
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.
• Where corrosive gas like sulfurous gas exists. (Copper tubing and brazed spots may corrode which could
eventually lead to refrigerant leaks.)
• Where exposed to combustible gases and where volatile flammable gas like thinner or gasoline is used.
(Gas in the vicinity of the unit could ignite.)
• Where machines can generate electromagnetic
waves. (Control system may malfunction.)
• Where the air contains high levels of salt such as that
near the ocean and where voltage fluctuates greatly
such as that in factories.
Also in vehicles or vessels.
• This unit, both indoor and outdoor, is suitable for installation in a
commercial and light industrial environment.
If installed as a household appliance it could cause electromagnetic interference.
2-1
PRECAUTIONS
• Be sure to read this manual before installing the indoor unit.
• 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 only parts provided with the unit or parts satisfying
required specifications. Unspecified parts could cause the
unit to fall out of place, or could lead to leaks and, in worse
cases, electric shock or fire.
• 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.
2-2
ACCESSORIES
Check the following accessories are included with your
unit.
Name
Attached
piping (1)
Quantity
1 set
Shape
2.
BEFORE INSTALLATION
• When moving the unit while removing it from the carton
box, be sure to lift it by holding on to the four lifting lugs
without exerting any pressure on other parts, especially,
the refrigerant piping, drain piping, and other resin parts.
• Be sure to check the type of R410A refrigerant to be used
before installing the unit. (Using an incorrect refrigerant will
prevent normal operation of the unit.)
• The accessories needed for installation must be retained in
your custody until the installation work is completed. Do not
discard them!
• Decide upon a line of transport.
• Leave the unit inside its packaging while moving, until reaching the installation site. Where unpacking is unavoidable, use
a sling of soft material or protective plates together with a
rope when lifting, to avoid damage or scratches to the unit.
• When moving the unit at or after opening, hold the unit by the
hanger brackets (× 4). Do not apply force to the refrigerant
piping, drain piping or plastic parts.
• For the installation of an outdoor unit, refer to the installation
manual attached to the outdoor unit.
• Do not install or operate the unit in rooms mentioned below.
• Laden with mineral oil, or filled with oil vapor or spray
like in kitchens. (Plastic parts may deteriorate which
could eventually cause the unit to fall out of place, or
could lead to leaks.)
2
2-3
(Other)
• Operation manual
• Installation manual
• Screws for flange connection (M5)
(40 pcs.)
• Insulation material (for hanger)(2 pcs.)
• Washers (8 pcs.)
• Clamps (3 pcs.)
• Hexagon head bolt for pipe flange (M10)
(2pcs.)
• Spring washer for pipe flange (M10)
(2pcs.)
OPTIONAL ACCESSORIES
• These are two types of remote controllers: wired and wireless. Select a remote controller according to customer
request and install in an appropriate place.
Table 1
Remote controller
Wired type
Wireless type
BRC1E52
Heat pump type
BRC4C65
Cooling only type
BRC4C66
NOTE
• If you wish to use a remote controller that is not listed in
Table 1, select a suitable remote controller after consulting
catalogs and technical materials.
English
01_EN_3P258319-14G.fm Page 3 Wednesday, March 18, 2015 7:48 PM
FOR THE FOLLOWING ITEMS, TAKE SPECIAL
CARE DURING CONSTRUCTION AND CHECK
AFTER INSTALLATION IS FINISHED.
• If supporting structural members are not strong enough
to take the unit’s weight, the unit could fall out of place
and cause serious injury.
• Where the false ceiling is not noticeably on an incline.
• Where there is no risk of flammable gas leakage.
• 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 of the outdoor unit.)
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 The units may drop, vibrate or
fixed firmly?
make noise.
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.
CAUTION
• Install the indoor and outdoor units, power supply wiring and
connecting wires at least 1 meter away from televisions or
radios in order to prevent image interference or noise.
(Depending on the radio waves, a distance of 1 meter may
not be sufficient enough to eliminate the noise.)
Does the power supply voltage
The unit may malfunction or
correspond to that shown on
the components burn out.
the name plate?
Is the unit safely grounded?
Dangerous at electric leakage.
Is wiring size according to
specifications?
The unit may malfunction or
the components burn out.
Is something blocking the air
outlet or inlet of either the
indoor or outdoor units?
It may result in insufficient cooling.
Are refrigerant piping length
and additional refrigerant
charge noted down?
The refrigerant charge in the
system is not clear.
(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.
Min.
50
The unit may malfunction or
the components burn out.
470
Are wiring and piping correct?
b. Items to be checked at time of delivery
Also review the “SAFETY PRECAUTIONS”.
Items to be checked
Min. 650
Check
Have you explained how to operate the air conditioner showing
the operation manual to the customer?
Have you handed the operation manual and the installation manual to the customer?
c. Points for explanation about operations
The items with WARNING or CAUTION mark in the operation
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 operation manual.
4.
(length: mm)
PREPARATIONS BEFORE INSTALLATION
(1) Relative positions of indoor unit and suspension bolt.
(Refer to Fig. 2)
Suspension
bolt (× 4)
1148
1100
(1) Select an installation site where the following conditions are
fulfilled and that meets with your customer’s approval.
• In the upper space (including the back of the ceiling) of the
indoor unit where there is no possible dripping of water
from the refrigerant pipe, drain pipe, water pipe, etc.
• Where optimum air distribution can be ensured.
• Where nothing blocks the air passage.
• Where condensate can be properly drained.
English
Air inlet
Air outlet
Approx.
150
Please attach additional thermal insulation material to the unit
body when it is believed that the relative humidity in the ceiling
exceeds 80%. Use glass wool, polyethylene foam, or similar
with a thickness of 10 mm or more as thermal insulation material.
Indoor unit
650 or more
SELECTING INSTALLATION SITE
1296
1380
NOTE TO INSTALLER
• Be sure to instruct customers how to properly operate the
unit (especially cleaning filters, operating different functions,
and adjusting the temperature) by having them carry out
operations themselves while looking at the manual.
3.
Fig. 1
(service space)
2-4
(service space)
1100 or more
(service space)
Fig. 2
Inspection hatch
600
(length: mm)
(2) Install a canvass duct to the air discharge outlet and air inlet
so that vibration from the machine body isn’t transmitted to
the duct or ceiling.
You should also apply sound absorbing material to the
inside of the duct, and vibration insulation rubber to the suspension bolts.
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01_EN_3P258319-14G.fm Page 4 Wednesday, March 18, 2015 7:48 PM
Installing optional accessories before installing the indoor
unit is easier.
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) Fix the hanger bracket to the suspension bolt. Tighten both
upper and lower nuts firmly using washers.
Part to be procured in the field
Washer (Accessory)
Tighten from above and below
(Double nut)
(2) Adjust the height of the unit.
(3) Make sure the unit is
level.
• Level the unit with
a level when
installing. If the unit
is not level, it could
become the source
A
of water leaks.
• When leveling the
unit, check all four
corners with a level
or a vinyl tube containing water. (See
the figure on the
right.)
Level
A
Vinyl tube
Hanger bracket setting bolt
B
Insulation material
(Accessory)
Hanger bracket
setting bolt
B
A-A cross-section
B-B cross-section
(4) Tighten the nuts on the top.
(5) Insulate the two hanger brackets on the discharge side with
the insulation material. (× 2) Insulate the edges so that the
surface and edges of the hanger brackets cannot be seen.
CAUTION
• Use a pipe cutter and flare suitable for the type of refrigerant.
• Apply ester oil or ether oil to the inside of the flare portions before connecting.
• To prevent dust, moisture or other foreign matter from
infiltrating the tube, either pinch the end or cover it with
tape.
• Do not allow anything other than the designated refrigerant to get mixed into the refrigerant circuit, such as air,
etc. If any refrigerant gas leaks while working on the
unit, ventilate the room thoroughly right away.
• The outdoor unit is charged with refrigerant.
• Be sure to use both a spanner and torque wrench together,
as shown in the drawing, when connecting or disconnecting
pipes to/from the unit.
• To prevent flare nut cracking and gas leaks, be sure to use
both a spanner and torque wrench together, as shown in the
drawing below, when connecting or disconnecting pipes to/
from the unit.
• Refer to the Table 2 for the dimensions of flare nut spaces.
• When connecting the flare nut, coat the flare (inside only)
with ester oil or ether oil, rotate three or four times first, then
screw in.
• Refer to the Table 2 for tightening torque.
• Ventilate if refrigerant gas leaks while performing work.
Table 2
Pipe
size
Tightening torque
Flare
dimensions
A (mm)
φ 6.4
(1/4”)
14.2 – 17.2N·m
8.7 – 9.1
φ 9.5
(3/8”)
32.7 – 39.9N·m
12.8 – 13.2
φ 12.7
(1/2”)
49.5 – 60.3N·m
16.2 – 16.6
φ 15.9
(5/8”)
61.8 – 75.4N·m
19.3 – 19.7
Flare shape
0
INDOOR UNIT INSTALLATION
R0.4-0.8
A
5.
0
〈For refrigerant piping of outdoor units, see the installation
manual attached to the outdoor unit.〉
〈Execute heat insulation work completely on both sides of
the gas piping and the liquid piping. Otherwise, a water
leakage can result sometimes.〉
(When using a heat pump, the temperature of the gas piping
can reach up to approximately 120°C, so use insulation which is
sufficiently resistant.)
〈Also, in cases where the temperature and humidity of the
refrigerant piping sections might exceed 30°C or RH80%,
reinforce the refrigerant insulation. (20 mm or thicker) Condensation may form on the surface of the insulating material.〉
〈Before refrigerant piping work, check which type of refrigerant is used. Proper operation is not possible if the types
of refrigerant are not the same.〉
0
REFRIGERANT PIPING WORK
0
6.
90 ±2
45 ±2
(3) Install suspension bolts.
(Use bolts of 10 mm diameter.)
• Install the equipment where supporting structures are
strong enough to bear the equipment’s weight. Use
embedded inserts or anchor bolts with new buildings and
hole-in-anchors with old buildings.
NOTE
The flare nuts used must be those included with the
main body.
CAUTION
Setting the unit at an angle opposite to the drain piping
might cause leaks.
4
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01_EN_3P258319-14G.fm Page 5 Wednesday, March 18, 2015 7:48 PM
• Connect refrigerant piping and branching according to the
attached installation manuals that come with the outdoor
unit.
Apply ester oil or ether oil only inside
Torque wrench
Indoor units to be
connected
Gas piping diameter
Liquid piping
diameter
FXMQ200MBVE
φ19.1
Use attached piping.
φ9.5
FXMQ250MBVE
φ22.2
Use attached piping.
φ9.5
CAUTION
Spanner
Piping union
Flare nut
CAUTION
Over-tightening may damage the flare and cause a refrigerant leakage.
Use “ Table 3 ” as a reference if a torque wrench is not available.
Once work is complete, make sure there is no gas leaking. As
the flare nut is tightened with the wrench, the torque will suddenly increase. From that position, tighten the nut to the angle
shown on “ Table 3 ”.
The turning torque of the hexagon head bolts (Accessory) to connect the attached pipe (Accessory) to the unit is 21.5 – 28.9 N·m.
• After checking the pipe-connection for gas leakage, be sure
to insulate the liquid and gas piping, referring to the figure
below.
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.
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.
Refrigerant
piping
Pressure-reducing valve
Part to be
brazed
Taping
Hands
valve
Nitrogen
Nitrogen
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.
After the work is finished, make sure to check that
there is no gas leak.
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:
Table 3
NOTE
• Attached piping is needed for connecting gas piping.
When connecting the included piping, use the included piping flange hex bolts (2) and spring washers (2).
English
Pipe size
Further tightening
angle
Recommended arm length of
tool
φ 6.4 (1/4”)
60 to 90 degrees
Approx. 150mm
φ 9.5 (3/8”)
60 to 90 degrees
Approx. 200mm
φ 12.7 (1/2”)
30 to 60 degrees
Approx. 250mm
φ 15.9 (5/8”)
30 to 60 degrees
Approx. 300mm
5
01_EN_3P258319-14G.fm Page 6 Wednesday, March 18, 2015 7:48 PM
7.
DRAIN PIPING WORK
Rig the drain pipe as shown below and take measures
against condensation. Improperly rigged piping could lead
to leaks and eventually wet furniture and belongings.
Insulate the drain hose inside the building.
(1) Carry out the drain piping.
• A drain trap need not be installed.
• The drain pipe should be short with a downward slope
lower than 1/100 and should prevent air pockets from
forming.
• The diameter of the piping is the same as that of the connecting pipe (PS1B), and should be kept equal to or
greater than that of the connecting pipe.
• If converging multiple drain pipes, install according to the
procedure shown below. (Select an appropriate central
drain pipe thickness for the units they will be connected
to.)
(2) After piping work is finished, check drainage flows
smoothly.
• Open the water supply port, add approximately 1 liter of
water slowly into the drain pan and check drainage flow.
Pools of drainage can cause the drain pipes to clog.
• 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 main switch or other means for disconnection, having a
contact separation in all poles, must be incorporated in the
fixed wiring in accordance with relevant local and national
legislation.
Note that the operation will restart automatically if the main
power supply is turned off and then turned back on again.
• 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.
• Gas pipes : might cause explosions or fire if gas leaks.
• 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
Model
FXMQ200MBVE
FXMQ250MBVE
Hz
Volts
Voltage
range
50
220240
Max. 264
Min. 198
Power supply
Fan motor
MCA
MFA
kW
FLA
10.3
16
1.100
4.3
10.3
16
1.100
5.6
MCA: Min. Circuit Amps (A); MFA: Max. Fuse Amps (A)
kW: Fan Motor Rated Output (kW); FLA: Full Load Amps (A)
Water supply port
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.
8.
8-1
ELECTRIC WIRING WORK
GENERAL INSTRUCTIONS
• All field supplied parts and materials and electric works must
conform to local codes.
• Use copper wire only.
• For electric wiring work, refer to also “Wiring diagram label”
attached to the control box lid.
• For remote controller wiring details, refer to the installation
manual attached to the remote controller.
• All wiring must be performed by an authorized electrician.
6
8-3
SPECIFICATIONS FOR FIELD SUPPLIED WIRE
Model
FXMQ200MBVE
FXMQ250MBVE
Power supply wiring
Remote controller wiring
Transmission wiring
Wire
Size
Wire
Size
H05VVU3G
Size must
comply
with local
codes.
Sheathed
wire (2 wire)
0.75 - 1.25
mm
2
NOTE
1. Allowable length of transmission wiring between indoor/outdoor units
and between the indoor unit and the remote controller is as follows.
(1) Outdoor unit – Indoor unit:
Max. 1000 m (Total wiring length: 2000 m)
(2) Indoor unit – Remote controller:
Max. 500 m
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01_EN_3P258319-14G.fm Page 7 Wednesday, March 18, 2015 7:48 PM
9.
9-1
WIRING EXAMPLE AND HOW TO SET
THE REMOTE CONTROLLER
HOW TO CONNECT WIRINGS
(Remove the control box lid and wire as shown in the figure below.)
Remote controller
wiring
(Field wiring)
Transmission
wiring
(Field wiring)
Power supply
wiring
(Field wiring)
Control
box lid
Ground wiring
2. Tightening torque for the terminal screws.
• Use the correct screwdriver for tightening the terminal
screws. If the blade of screwdriver is too small, the head
of the screw might be damaged, and the screw will not be
properly tightened.
• If the terminal screws are tightened too hard, screws
might be damaged.
• Refer to the Table 4 for the tightening torque of the terminal screws.
Table 4
Terminal
Terminal block for remote controller (6P)
Wire clip
Clamp
(Accessory)
Remote
controller
wiring
Terminal block
for remote
controller
Power supply
terminal block
X27A
X1M
X2M
Transmission
wiring
Clamps
(Accessory)
Power supply wiring
and ground wiring
CAUTION
• Be sure to attach the sealing material or putty (field supplied)
to hole of wiring to prevent the infiltration of water as well as
any insects and other small creatures from outside. Otherwise a short-circuit may occur inside the control box.
• When clamping the wires, be sure no tension is applied to the
wire connections by using the included clamping material to
make appropriate clamps. Also, when wiring, make sure the
lid on the control box fits snugly by arranging the wires neatly
and attaching the control box lid firmly. When attaching the
control box lid, make sure no wires get caught in the edges.
Pass wiring through the wiring through holes to prevent damage to them.
• Make sure the remote controller wiring, the wiring between
the units, and other electrical wiring do not pass through the
same locations outside of the unit, separating them by at
least 50mm, otherwise electrical noise (external static) could
cause mistaken operation or breakage.
Size
Tightening torque
M3.5
0.79 – 0.97 N·m
Power supply terminal block
M4
1.18 – 1.44 N·m
Ground terminal
M5
3.02 – 4.08 N·m
3. Do not connect wires of different gauge to the same grounding terminal. Looseness in the connection may deteriorate
protection.
4. Outside of the unit, keep transmission wiring at least 50 mm
away from power supply wiring. The equipment may malfunction if subjected to electrical (external) noise.
5. For remote controller wiring, refer to the “INSTALLATION
MANUAL OF REMOTE CONTROLLER” attached to the
remote controller.
6. Never connect power supply wiring to the terminal
block for remote controller wiring. A mistake of the sort
could damage the entire system.
7. 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.
[ PRECAUTIONS ]
1. Use round crimp-style terminals for connecting wires
to the power supply terminal block.
If unavailable, observe the following points when wiring.
• Do not connect wires of different gauge to the same
power supply terminal.
(Looseness in the connection may cause overheating.)
• Use the specified electric wire. Connect the wire securely
to the terminal. Lock the wire down without applying
excessive force to the terminal.
English
7
01_EN_3P258319-14G.fm Page 8 Wednesday, March 18, 2015 7:48 PM
9-2 WIRING EXAMPLE
3. When including BS unit
• 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
220-240V
1
50Hz L
Outdoor unit
Control box
N
IN/D OUT/D
F1 F2 F1 F2
No. 3
System
Indoor unit A
L N
BS unit
BS unit
Control box
Control box
OUT/D IN/D
F1 F2 F1 F2
OUT/D IN/D
F1 F2 F1 F2
P 1 P 2 F1 F 2 T 1 T 2
!
L N
Power
supply
220-240V
1
50Hz
L N
P1 P2
P 1 P2 F 1 F 2 T 1 T 2
Most
downstream
indoor unit
P1 P2
[ PRECAUTIONS ]
1. When using 1 remote controller for 1 indoor unit. (Normal operation)
Power supply
220-240V
1
50Hz L N
Outdoor unit
Control box
IN/D OUT/D
F 1 F2 F1 F 2
L
Power supply
220-240V
1
50Hz
N
L
Power supply
220-240V
1
50Hz
N
L
Power supply
220-240V
1
50Hz
N
No. 1
System
1. A single switch can be used to supply power to units on the
same system. However, branch switches and branch circuit
breakers must be selected carefully.
2. Do not ground the equipment on gas pipes, water pipes or
lightning rods, or cross ground with telephones. Improper
grounding could result in electric shock.
9-3
CONTROL BY 2 REMOTE CONTROLLERS (Controlling 1 indoor unit by 2 remote controllers)
• For control with 2 remote controllers, set one remote controller as main and the other remote controller as sub.
< Changeover method from main to sub and vice versa >
Refer to the installation manual attached to the remote controller.
< Wiring method >
LN
P1 P2 F1 F2 T1 T2
LN
P1 P2 F1 F2 T1 T2
LN
P1 P2 F1 F2 T1 T2
LN
P1 P2 F1 F2 T1 T2
(1)Remove the control box lid.
Indoor
unit C
Indoor
unit B
Indoor
unit A
P1 P2
P1 P2
P1 P2
P1 P2
Most
downstream
Indoor unit
2. For group control or use with 2 remote controllers
Power supply
220-240V
1
50Hz L N
Outdoor unit
Control box
IN/D OUT/D
F 1 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.
Indoor unit B
Indoor unit A
LN
P1 P2 F1 F2 T1 T2
LN
P1 P2 F1 F2 T1 T2
LN
P1 P2 F1 F2 T1 T2
P1 P2
P1 P2
Fig. 3
8
LN
Most
downstream
indoor unit
Indoor unit C
P1 P2 F1 F2 T1 T2
(2)Carry out additional wiring from the remote controller 2
(Sub) to the terminals (P1•P2) for remote controller wiring
on the terminal block (X1M) in the control box.
P1 P2
For use with 2
remote controllers
English
01_EN_3P258319-14G.fm Page 9 Wednesday, March 18, 2015 7:48 PM
9-4
EXTERNAL REMOTE 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 block for remote controller.
External Static Pressure Settings
Change the “SECOND CODE No.” as shown in Table 6 according to the external static pressure of the duct to be connected.
Table 6
Setting
Mode No.
FIRST CODE
No.
SECOND
CODE No.
Standard
E.S.P
13 (23)
6
1
High E.S.P
13 (23)
6
2
11. TEST OPERATION
Wire specification
Sheathed vinyl cord or cable (2 wire)
Gauge
0.75 - 1.25 mm
2
Length
Max. 100 m
External terminal
Contact that can ensure the minimum applicable load of 15 V DC, 1 mA.
(2) Actuation
• The Table 5 explains FORCED OFF and ON/OFF OPERATIONS in response to Input A.
Table 5
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.
Refer to the installation manual of the outdoor unit.
• The operation lamp of the remote controller will flash when
an malfunction occurs. Check the malfunction 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 7 are displayed, there may be a
problem with the wiring or power, so check the wiring again.
Table 7
Remote control display
“Concentrated Management” • There is a short circuit at the
FORCED OFF terminals (T1, T2).
is lit up
“U4” is lit up
“UH” is lit up
• The power on the outdoor unit is
off.
• The outdoor unit has not been
wired for power supply.
• Incorrect wiring for the transmission wiring and / or FORCED
OFF wiring.
No display
• The power on the indoor unit is
off.
• The indoor unit has not been
wired for power supply.
• Incorrect wiring for the remote
controller wiring, the transmission
wiring and / or the FORCED OFF
wiring.
(3) How to select FORCED OFF and ON/OFF OPERATION
• Turn the power on and then use the remote controller to
select operation.
9-5 CENTRALIZED CONTROL
• For centralized control, it is necessary to designate the group
No. For details, refer to the manual of each optional controller
for centralized control.
Content
10. FIELD SETTING
After turn on the power supply, carry out field setting from
the remote controller according to the installation state.
• Carry out setting at 3 places, “Mode No.”, “FIRST CODE No.”
and “SECOND CODE No.”.
The settings shown by “
” in the table indicate those
when shipped from the factory.
• The method of setting procedure and operation is shown in
the installation manual attached to the remote controller.
(Note) Though setting of “Mode No.” is carried out as a
group, if you intend to carry out individual setting by
each indoor unit or confirmation after setting, carry
out setting with the Mode No. shown in the parenthesis ( ).
• In case of remote control, for changeover of input to
FORCED OFF or to ON/OFF OPERATION.
[1] Enter into the field setting mode with the remote controller.
[2] Select Mode No. “12”.
[3] Set the FIRST CODE No. to “1”.
[4-1] For FORCE OFF, set the SECOND CODE No. to “01”.
[4-2] For ON/OFF OPERATION, set the SECOND CODE No.
to “02”.
(It is set to FORCED OFF when shipped from the factory.)
• Ask your customer to keep the instruction attached to the
remote controller together with the operation manual.
• Do not carry out setting other than those shown in the table.
English
9
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