• Read these Safety Precautions carefully to ensure correct installation.
• This manual classifies the precautions into WARNING and CAUTION.
Be sure to follow all the precautions below: they are all important for ensuring safety.
WARNIN G
CAUTION...............Failure to follow any of CAUTION may in some cases result in grave consequences.
...............Failure to follow any of WARNING is likely to result in such grave consequences as death or serious injury.
• The following safety symbols are used throughout this manual:
Be sure to observe this instruction.
• After completing installation, test the unit to check for installation errors. Give the user adequate instructions concerning the use and cleaning of the unit
according to the Operation Manual.
Be sure to establish an earth connection.Never attempt.
WARNING
• Installation should be left to the dealer or another professional.
Improper installation may cause water leakage, electrical shock, or fire.
• Install the air conditioner according to the instructions given in this manual.
Incomplete installation may cause water leakage, electrical shock, or fire.
• Be sure to use the supplied or specified installation parts.
Use of other parts may cause the unit to come to lose, water leakage, electrical shock, or fire.
• Install the air conditioner on a solid base that can support the unit’s weight.
An inadequate base or incomplete installation may cause injury in the event the unit falls off the base.
• Electrical work should be carried out in accordance with the installation manual and the national electrical wiring
rules or code of practice.
• Be sure to use a dedicated power circuit. Never use a power supply shared by another appliance.
• For wiring, use a cable long enough to cover the entire distance with no connection.
Do not use an extension cord. Do not put other loads on the power supply, use a dedicated power circuit.
(Failure to do so may cause abnormal heat, electric shock or fire.)
• Use the specified types of wires for electrical connections between the indoor and outdoor units.
Firmly clamp the interconnec ing wires so their terminals receive no external stresses. Incomplete connections or clamping may cause terminal overheating or fire.
• After connecting interconnecting and supply wiring be sure to shape the cables so that they do not put undue force
on the electrical covers or panels.
Install covers over the wires. Incomplete cover installation may cause terminal overheating, electrical shock, or fire.
• If any refrigerant has leaked out during the installation work, ventilate the room.
(The refrigerant produces a toxic gas if exposed to flames.)
• After all installation is complete, check to make sure that no refrigerant is leaking out.
(The refrigerant produces a toxic gas if exposed to flames.)
• When installing or relocating the system, be sure to keep the refrigerant circuit free from substances other than the
specified refrigerant (R410A), such as air.
(Any presence of air or other foreign substance in the refrigerant circuit causes an abnormal pressure rise or rupture, resulting in injury.)
• During pump-down, stop the compressor before removing the refrigerant piping.
If the compressor is still running and the shut-off valve is open during pump-down, air will be sucked in when the refrigerant piping is removed,
causing abnormal pressure in the freezer cycle which will lead to breakage and even injury.
• During installation, attach the refrigerant piping securely before running the compressor.
If the compressor is not attached and the shut-off valve is open during pump-down, air will be sucked in when the compressor is run, causing
abnormal pressure in the freezer cycle which will lead to breakage and even injury.
• Be sure to establish an earth. Do not earth the unit to a utility pipe, arrester, or telephone earth.
Incomplete earth may cause electrical shock, or fire. A high surge current from lightning or other sources may cause damage to the air conditioner.
• Be sure to install an earth leakage breaker.
Failure to install an earth leakage breaker may result in electric shocks, or fire.
Insufficient capacity or incomplete electrical work may cause electrical shock or fire.
CAUTION
• Do not install the air conditioner in a place where there is danger of exposure to inflammable gas leakage.
If the gas leaks and builds up around the unit, it may catch fire.
• Establish drain piping according to the instructions of this manual.
Inadequate piping may cause flooding.
• Note for installing the outdoor unit. (For heat pump model only.)
In cold area where the outside air temperature keep below or around freezing-point for a few days, the outdoor unit’s drain may freeze.
If so, it is recommended to install an electric heater in order to protect drain from freezing.
• Tighten the flare nut according to the specified method such as with a torque wrench.
If the flare nut is tightened too hard, the flare nut may crack after a long time and cause refrigerant leakage.
1■English
Accessories
Indoorunit
Mounting plate
A
Titanium Apatite Photocatalytic
B
Air-Purifying Filter
Wireless remote controller
C
–
A
H
1
2
1
Remote controller holder
D
AAA dry-cell batteries
E
Indoor unit fixing screws
F
(M4 × 12L)
Choosing a Site
• Before choosing the installation site, obtain user approval.
Indoor unit
1.
• The indoor unit should be sited in a place where:
1) the restrictions on installation specified in the indoor unit installation drawings are met,
2) both air intake and exhaust have clear paths met,
3) the unit is not in the path of direct sunlight,
4) the unit is away from the source of heat or steam,
5) there is no source of machine oil vapour (this may shorten indoor unit life),
6) cool (heat) air is circulated throughout the room,
7) the unit is away from electronic ignition type fluorescent lamps (inverter or rapid start type) as they may shorten the
remote control range,
8) the unit is at least 1 metre away from any television or radio set (unit may cause interference with the picture or sound).
9) Install at the recommended height (1.8m).
1
2
1
Operation manual
G
Installation manual
H
1
1
Wireless remote controller
2.
1) Turn on all the fluorescent lamps in the room, if any, and find the site where remote control signals are properly received
by the indoor unit (within 7 metres).
1) Place one finger on the panel tab on either side of the front panel and
open it until it is horizontal.
2) Sliding the front panel to the left will cause the revolving axis on the right
to come off. The left revolving axis comes off by sliding it to the right.
• Attaching the panel
1) Place the revolving axis on either side of the front panel in the holes and
close the front panel slowly. (Press both sides of the front panel.)
How to remove and attach the outlet vent panel
2.
• Removing the outlet vent panel
1) Slightly pull the outlet vent panel towards you.
2) Pull it up and remove the fixed axis on either side.
• Attaching the outlet vent panel
Insert the fixed axles located on either side of the outlet vent panel into the
1)
axle bearings in a hooking motion from above, and slowly close the panel.
How to remove and attach the front grill
3.
• Removing the front grill
1) Remove the front panel and the outlet vent panel.
2) Remove the 5 screws in the front grill.
Outlet
vent panel
Outlet vent panel
1
2
Fixed axis
Axis bearing
parts(3)
3) Disengage the 3 hooks in the front grill.
(Look for the .)
• Attaching the front grill
1) Attach the front grill horizontally and attach
the 3 hooks firmly into place.
2) Insert the 5 screws.
3) Attach the outlet vent panel and the front
panel.
When removing or attaching the front grill, do not touch any electric parts.
Any static electricity created through contact may cause malfunctions.
Screws(5)
3■English
How to open the indoor unit service lid
E
lectricpartsbox
servicelid
Slidetheservicelidtotherighttoremoveit.
4.
• Opening the lid
1) Push and slide the service lid in the direction of the arrow.
2) Disengage the tabs.
3) Slide the other tab in the direction of the arrow.
4) Remove the screw from the bottom of the electric parts box and remove
the electric parts box service lid.
• Attaching the lid
1) Attach the electric parts box service lid.
2) Set the tab of the service lid and install the lid.
Whenremovingfromthesideoftheindoorunit
1)2)3)
Tabs(3)
Tabs(2)
Whenremovingfromthebottomoftheindoorunit
1)2)3)
Tabs(2)
Tabs(3)
How to set the different addresses
5.
1) When two indoor units are installed in one room, the two wireless remote
controllers can be set for different addresses.
PCB in the indoor unit
6.
1) Remove the front panel.
2) Remove the front grill. (5 screws)
3) Remove the electric parts box cover. (6 tabs)
4) Cut the address jumper (JA) on the indoor unit circuit board.
Wireless remote controller
7.
1) Cut the jumper J4.
CutJA.
JB
JA
J11
JA/J4
ADDRESS
EXIST1
CUT2
JC
Electricpartsbox
Tabs(6)
Electricpartsboxcover
PCB
J4
■English4
Wirelessremotecontroller
Indoor Unit
CAUTION
Use when
opening the
front panel and
securing.
Supporting plate
Supporting plate
Cut thermal insulation
pipe to an appropriate
length and wrap it with
tape, making sure that no
gap is left in the insulation
pipe’s cut line.
Caulk pipe hole gap
with putty.
30mm or more
from ceiling
Front panel
50mm or more from walls
(on both sides)
Outlet vent panel
Screws (Field supply)
The mounting plate should be installed
on a wall which can support the weight
of the indoor unit.
A Mounting plate
Installing and removing the indoor unit
Attaching the indoor unit
1) Using the 2 marks on top of the indoor
unit, attach the mounting plate hooks
onto the indoor unit.
2) Attach the tabs on the bottom frame firmly
onto the mounting plate.
(2 on either side)
Removing the indoor unit
1) Lift the marked parts on the bottom of the
front grill, pull the front grill towards
yourself and disengage the tabs on the
bottom of the frame.
2) Lift up the indoor unit and remove it from
the top of the mounting plate.
See 4. How to open the indoor unit service lid on p4 of the Installation
Tips for details.
Before screwing the remote
controller holder to the wall, make
sure that control signals are
properly received by indoor unit.
Appearance of the indoor unit may
differ from some models.
A Mounting
plate
Marked
part (rear)
Bottom frame
Ta b
A Mounting
plate
A
A
Secure the installation plate to the wall on
the side where the bottom frame and the
installation plate are secured to each other.
Cushioning material
(do not remove)
Installation Drawings
Intelligent-Eye Sensor
1) Do not hit or violently push the Intelligent-eye sensor. This can lead to damage and malfunction.
2) Do not place large objects near the sensor. Also keep heating units or humidifiers outside the sensor’s detection area.
5■English
Indoor Unit Installation
275
110
100
60
170
44.570
23
a
b
1821504835
44.5
840
Removed pipe
port cover
* The removed pipe port cover can be
kept in the mounting plate pocket
Mounting
plate
A
260190
(Bolt size : M10)
(Bolt size : M10)
Recommended mounting plate
retention spots (6 spots in all)
Dangle a weighted thread and
align thread with vertical arrow.
Place a leveler on raised tab.
Use tape measure
as shown.
Position the end of
tape measure at
∇
.
Unit outline
(unit: mm)
Gas pipe end
Liquid pipe end
Through-the-wall hole
Drain hose position
Leveling mounting plate
Secure the installation plate to the wall on
the side where the bottom frame and the
installation plate are secured to each other.
Installing the mounting plate
1.
• The mounting plate should be installed on a wall which can support the weight of the indoor unit.
1) Temporarily secure the mounting plate to the wall, make sure that the panel is completely level, and mark the boring
points on the wall.
2) Secure the mounting plate to the wall with screws.
Recommended mounting plate retention spots and Dimensions
Boring a wall hole and installing wall embedded pipe
2.
• For walls containing metal frame or metal board, be sure to use a wall
embedded pipe and wall cover in the feed-through hole to prevent possible
heat, electrical shock, or fire.
• Be sure to caulk the gaps around the pipes with caulking material to prevent
water leakage.
1) Bore a feed-through hole of 65mm in the wall so it has a down slope
toward the outside.
2) Insert a wall pipe into the hole.
3) Insert a wall cover into wall pipe.
4) After completing refrigerant piping, wiring, and drain piping, caulk pipe
3) After attaching the mounting plate, connect the interunit wiring as shown
in the figure at right.
Laying piping, hoses, and wiring
4.
• Lay the piping and drain hose according to the orientation of the piping
coming out of the unit, as shown below.
• Make sure the drain hose is sloped downward.
• Wrap the piping and the drain hose using insulating tape.
• Bind and then shape the pipes, hoses, and wires so that they can fit through
the piping through-hole.
• When cutting out the piping through-hole, cut out Part A using nippers along
the cut-out groove as shown in the figure at right.
Stopping the nippers part-way through Part A may cause it to break.
4-1. Right-Side, Right-Back, or Right-Bottom Piping
1) Attach the drain hose to the underside of the refrigerant pipes with
adhesive vinyl tape.
2) Wrap the refrigerant pipes and drain hose together with insulation tape.
3) Put all the pipes through the through-hole in the wall and attach the
indoor unit to the mounting plate.
(See p5 Installing and removing the indoor unit)
4) Connect the pipes.
5) Store any excess power cord behind the indoor unit.
6) Making sure not to pinch the interunit wiring and the power cord, push
on the bottom of the indoor unit with both hands and attach the tabs.
If the indoor unit won’t attach to the mounting plate, fix the bottom
panel to the mounting plate with screws. (In one place on the left side
or the right side.)
Wrap the insulation on the piping with insulating tape. If you are not replacing the drain hose, store it in the location shown below.
NOTE:
1. When fixing the indoor unit screws, use an Indoor unit fixing
screw (M4 × 12L). (In one place on the left side or the right side.)
7) Store any excess power cord behind the indoor unit. (See 4-1. 6))
8) Making sure not to pinch the interunit wiring and the power cord, push
on the bottom of the indoor unit with both hands and attach the tabs.
If the indoor unit won’t attach to the mounting plate, fix the bottom
panel to the mounting plate with screws.
(In one place on the left side or the right side.)
Wiring
5.
1) Strip wire ends (15mm).
2) Match wire colours with terminal numbers on indoor and outdoor unit’s terminal blocks and firmly screw wires to the
corresponding terminals.
3) Connect the earth wires to the corresponding terminals.
4) Pull wires to make sure that they are securely latched up, then retain wires with wire retainer.
5) Shape the wires so that the service lid fits securely, then close service lid.
Drainhose
FM4×12L
1) Do not use tapped wires, stand wires, extensioncords, or starbust connections, as they may cause overtheating, electrical
shock,or fire
2) Do not use locally purchased electrical parts inside the product. (Do not branch the power for the drain pump, etc., from the
terminal block.) Doing so may cause electric shock or fire.
■English8
Indoor Unit Installation
Thedrainhoseshouldbeinclineddownward.
Notrapispermitted.
Donotputtheendofthehoseinwater.
When connecting to an HA system
6.
1) Remove the front grille. (5 screws)
2) Remove the metal plate electric parts box cover. (6 tabs)
3) Insert the connection cord to the HA connector “S21”.
4) Lay the connecting cord as shown in the figure below.
5) Restore the electric parts box cover and the front grill.
6 tabs
HA connector
“S21”
PCB
HA harness
Electric parts
box cover
Drain piping
7.
Electric parts box
1) Connect the drain hose, as described right.
2) Remove the air filters and pour some water into the drain pan to check the
water flows smoothly.
3) When drain hose requires extension, obtain an extension hose commercially
available.
Be sure to thermally insulate the indoor section of the extension hose.
Indoor unit
drain hose
φ18
Heat insulation tube
(Field supply)
Extension drain hose
4) When connecting a rigid polyvinyl chloride pipe
(nominal diameter 13mm) directly to the drain
hose attached to the indoor unit as with
embedded piping work, use any commercially
available drain socket (nominal diameter
Drain hose supplied with
the indoor unit
13mm) as a joint.
9■English
φ18
Commercially available drain
socket
(nominal diameter 13mm)
Commercially available rigid
polyvinyl chloride pipe
(nominal diameter 13mm)
Refrigerant Piping Work
WARNING
Coatherewithrefrigerationmachineoil
Torquewrench
Pipingunion
Flarenut
Spanner
Flaring the pipe end
1.
(Cutexactlyat
1) Cut the pipe end with a pipe cutter.
2) Remove burrs with the cut surface facing downward
so that the chips do not enter the pipe.
3) Put the flare nut on the pipe.
Setexactlyatthepositionshownbelow.
A
4) Flare the pipe.
5) Check that the flaring is properly made.
Die
1) Do not use mineral oil on flared part.
2) Prevent mineral oil from getting into the system as this would reduce the lifetime of the units.
3) Never use piping which has been used for previous installations. Only use parts which are delivered with the unit.
4) Do never install a drier to this R410A unit in order to guarantee its lifetime.
5) The drying material may dissolve and damage the system.
6) Incomplete flaring may cause refrigerant gas leakage.
Refrigerant piping
2.
1) Align the centres of both flares and tighten the flare
nuts 3 or 4 turns by hand. Then tighten them fully with
the torque wrenches.
• Use torque wrenches when tightening the flare nuts
to prevent damage to the flare nuts and escaping
Gas sideLiquid side
3/8 inch1/2 inch1/4 inch
32.7-39.9N
(333-407kgf
gas.
rightangles.)Removeburrs
Flaring
FlaretoolforR410A
Clutch-type
A
0-0.5mm1.0-1.5mm1.5-2.0mm
Flare nut tightening torque
l
m49.5-60.3N l m14.2-17.2N l m
l
cm)(505-615kgf l cm) (144-175kgf l cm)
Conventionalflaretool
Clutch-type(Rigid-type)
F
laresinnersurfacemustbeflaw-free.
Wing-nuttype(Imperial-type)
Check
Thepipeendmustbeevenlyflaredinaperfectcircle.
Makesurethattheflarenutisfitted.
2) To prevent gas leakage, apply refrigeration machine oil on both inner and outer surfaces of the flare. (Use refrigeration oil
for R410A.)
2-1. Caution on Piping Handling
1) Protect the open end of the pipe against dust and moisture.
2) All pipe bends should be as gentle as possible. Use a pipe bender
■English10
for bending.
(Bending radius should be 30 to 40mm or larger.)
2-2. Selection of Copper and Heat Insulation materials
• When using commercial copper pipes and fittings, observe the
following:
1) Insulation material: Polyethylene foam
Heat transfer rate: 0.041 to 0.052W/mK (0.035 to 0.045kcal/mh°C)
Refrigerant gas pipe’s surface temperature reaches 110°C max.
Choose heat insulation materials that will withstand this temperature.
Gaspipe
Inter-unitwiring
Liquidpipe
Gaspipeinsulation
Finishingtape
2) Be sure to insulate both the gas and liquid piping and to provide insulation dimensions as below.
Gas sideLiquid side
25/35 class50 class25/35/50 class
O.D. 9.5mmO.D. 12.7mmO.D. 6.4mm
Thickness 0.8mmThickness 0.8mm
Gas pipe thermal insulationLiquid pipe thermal insulation
25/35 class50 class25/35/50 class
I.D. 12-15mmI.D. 14-16mmI.D. 8-10mm
Thickness 10mm Min.
3) Use separate thermal insulation pipes for gas and liquid refrigerant pipes.
1-1 Measure the supply voltage and make sure that it falls in the specified range.
1-2 Make sure the front panel opens and closes smoothly using remote controller.
(Do not do this using the indoor unit operation/stop button.)
1-3 Trial operation should be carried out in either cooling or heating mode.
• In cooling mode, select the lowest programmable temperature; in heating mode, select the highest programmable
temperature.
1) Trial operation may be disabled in either mode depending on the room temperature.
Use the remote control for trial operation as described below.
2) After trial operation is complete, set the temperature to a normal level (26°C to 28°C in cooling mode, 20°C to 24°C in
heating mode).
3) For protection, the system disables restart operation for 3 minutes after it is turned off.
1-4 Carry out the test operation in accordance with the Operation Manual to ensure that all functions and parts,
such as louver movement, are working properly.
• The air conditioner requires a small amount of power in its standby mode. If the system is not to be used for some
time after installation, shut off the circuit breaker to eliminate unnecessary power consumption.
• If the circuit breaker trips to shut off the power to the air conditioner, the system will restore the original operation
mode when the circuit breaker is opened again.
Test items
2.
Test Items
Indoor and outdoor units are installed properly on solid bases.Fall, vibration, noise
No refrigerant gas leaks.
Refrigerant gas and liquid pipes and indoor drain hose extension are
thermally insulated.
Draining line is properly installed.Water leakage
System is properly earthed.Electrical leakage
The specified wires are used for interconnecting wire connections.Inoperative or burn damage
Indoor or outdoor unit’s air intake or exhaust has clear path of air.
Shut-off valves are opened.
Indoor unit properly receives remote control commands.Inoperative
(diagnostic display on RC)
Incomplete cooling/heating
function
Water leakage
Incomplete cooling/heating
function
Symptom
Check
■English12
3P166464-1M05B043
(0511) HT
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