Daikin CTXU25G2V1B User manual

R410A Split Series
INSTALLATION MANUAL
DAIKIN ROOM AIR CONDITIONER
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Installation manual
Installationsanleitung
Manuel d’installation
Montagehandleiding
Manual de instalación
Manuale d’installazione
 
Manual de Instalação
  
 
MODELS
CTXU25G2V1B
CTXU35G2V1B
CTXU42G2V1B
CTXU50G2V1B
00_CV_3P232706-1A.fm Page 1 Friday, November 7, 2008 6:01 PM

Umeda Center Bldg., 2-4-12, Nakazaki-Nishi, Kita-ku, Osaka, 530-8323 Japan
3SB64417-8C
CTXU25G2V1B, CTXU35G2V1B, CTXU42G2V1B, CTXU50G2V1B
DAIKIN INDUSTRIES, LTD.
Noboru Murata Manager Quality Control Department 1st. of Nov. 2008
Low Voltage 2006/95/EC
Electromagnetic Compatibility 2004/108/EC
*
DAIKIN.TCF.015 M7/10-2008 KEMA Quality B.V. 74736-KRQ/EMC97-4957
3SB64417-8C.fm Page 1 Thursday, October 30, 2008 9:40 AM

1■English
Safety Precautions
• The precautions described herein are classified as WARNING and CAUTION. They both contain important
information regarding safety. Be sure to observe all precautions without fail.
• Meaning of WARNING and CAUTION notices
WARNING .... Failure to follow these instructions properly may result in personal injury or loss of life.
CAUTION ..... Failure to observe these instructions properly may result in property damage or personal injury, which
may be serious depending on the circumstances.
• The safety marks shown in this manual have the following meanings:
• After completing installation, conduct a trial operation to check for faults and explain to the customer how to operate
the air conditioner and take care of it with the aid of the operation manual.
Be sure to follow the instructions. Be sure to establish an earth connection. Never attempt.
WARNING
• Ask your dealer or qualified personnel to carry out installation work.
Do not attempt to install the air conditioner yourself. Improper installation may result in water leakage, electric shocks or fire.
• Install the air conditioner in accordance with the instructions in this installation manual.
Improper installation may result in water leakage, electric shocks or fire.
• Be sure to use only the specified accessories and parts for installation work.
Failure to use the specified parts may result in the unit falling, water leakage, electric shocks or fire.
• Install the air conditioner on a foundation strong enough to withstand the weight of the unit.
A foundation of insufficient strength may result in the equipment falling and causing injury.
• Electrical work must be performed in accordance with relevant local and national regulations and with instructions
in this installation manual. Be sure to use a dedicated power supply circuit only.
Insufficiency of power circuit capacity and improper workmanship may result in electric shocks or fire.
• Use a cable of suitable length.
Do not use tapped wires or an extension lead, as this may cause overheating, electric shocks or fire.
• Make sure that all wiring is secured, the specified wires are used, and that there is no strain on the terminal
connections or wires.
Improper connections or securing of wires may result in abnormal heat build-up or fire.
• When wiring the power supply and connecting the wiring between the indoor and outdoor units, position the wires
so that the control box lid can be securely fastened.
Improper positioning of the control box lid may result in electric shocks, fire or over heating terminals.
• If refrigerant gas leaks during installation, ventilate the area immediately.
Toxic gas may be produced if the refrigerant comes into contact with fire.
• After completing installation, check for refrigerant gas leakage.
Toxic gas may be produced if the refrigerant gas leaks into the room and comes into contact with a source of fire, such as a fan heater, stove or cooker.
• When installing or relocating the air conditioner, be sure to bleed the refrigerant circuit to ensure it is free of air, and
use only the specified refrigerant (R410A).
The presence of air or other foreign matter in the refrigerant circuit causes abnormal pressure rise, which may result in equipment damage and even injury.
• During installation, attach the refrigerant piping securely before running the compressor.
If the compressor is not attached and the stop valve is open when the compressor is run, air will be sucked in, causing abnormal pressure in
the refrigeration cycle, which may result in equipment damage and even injury.
• During pump-down, stop the compressor before removing the refrigerant piping.
If the compressor is still running and the stop valve is open during pump-down, air will be sucked in when the refrigerant piping is removed,
causing abnormal pressure in the refrigeration cycle, which may result in equipment damage and even injury.
• Be sure to earth the air conditioner.
Do not earth the unit to a utility pipe, lightning conductor or telephone earth lead. Imperfect earthing may result in electric shocks.
• Be sure to install an earth leakage breaker.
Failure to install an earth leakage breaker may result in electric shocks or fire.
CAUTION
• Do not install the air conditioner at any place where there is a danger of flammable gas leakage.
In the event of a gas leakage, build-up of gas near the air conditioner may cause a fire to break out.
• While following the instructions in this installation manual, install drain piping to ensure proper drainage and
insulate piping to prevent condensation.
Improper drain piping may result in indoor water leakage and property damage.
• Tighten the flare nut according to the specified method such as with a torque wrench.
If the flare nut is too tight, it may crack after prolonged use, causing refrigerant leakage.
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■English 2
English
Accessories
– ,
Choosing an Installation Site
• Before choosing the installation site, obtain user approval.
1. Indoor unit.
• 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 (warm) 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 controller range,
8) the unit is at least 1m away from any television or radio set (unit may cause interference with the picture or sound),
9) install at the recommended height (1.8m).
2. Wireless remote controller.
1) Turn on all the fluorescent lamps in the room, if any, and find the site where remote controller signals are properly
received by the indoor unit (within 7m).
Mounting plate 1Wireless remote controller 1Operation manual 1
Titanium apatite photocatalytic
air-purifying filter (short)
1Remote controller holder 1Installation manual 1
Titanium apatite photocatalytic
air-purifying filter (long)
1Dry batteries AAA. LR03
(alkaline)
2
Air supply filter (gray) 1Indoor unit fixing screws
(M4 × 12L)
2
Indoor unit
A K
A E J
BF K
C G
DH
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Indoor Unit Installation Drawings
INTELLIGENT EYE sensor
CAUTION
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.
E
Wireless
remote
controller
F
Remote
controller holder
Before screwing the remote
controller holder to the wall, make
sure that control signals are
properly received by indoor unit.
Service lid
n Opening service lid
Service lid is opening/closing type.
n Opening method
1) Remove the service lid screws.
2) Pull out the service lid diagonally
down in the direction of the arrow.
3) Pull down.
INTELLIGENT
EYE sensor
Clip
Mark (rear side)
Bottom frame
Front grille
The mounting plate
should be installed on a
wall which can support the
weight of the indoor unit.
30mm or more
from ceiling
Front panel
50mm or more
from walls
(on both sides)
A Mounting plate
A Mounting
plate
Screws
(Field supply: M4 × 25L)
Screws
(field supply: M3 × 20L)
Titanium apatite photocatalytic
air-purifying filter
B,C
Filter frame
Air filter
Ta b
Air filters
(Left side) (Right side)
Air filters
M4 × 16L
Wrap the insulation
pipe with the finishing
tape from bottom to top.
Install the hose with
a downward slope.
Do not install the trap to
the humidifying hose as
much as possible.
If it is difficult to lay the humidifying
hose, cut it, lay it, and connect it using
the joint included with the outdoor unit.
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.
Humidifying
hose
C (long)B (short)
n How to attach the indoor unit.
Hook the claws of the bottom frame
to the mounting plate.
If the claws are difficult to hook,
remove the front grille.
n How to remove the indoor unit.
Push up the marked area (at the
lower part of the front grille) to
release the claws. If it is difficult to
release, remove the front grille.
In upward direction
Air supply filter (gray)
• Hold the knob to pull up.
Holes
(4 locations)
Tabs
(4 locations)
Filter frame
Filter frame
Air supply
filter
D Air supply filter (gray)
M4 × 16L
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English
Preparation before Installation
1. Removing and installing front panel.
• Removal method
Hook fingers on the tabs on the left and right of the main body, and open
until the panel stops. Slide the front panel sideways to disengage the
rotating shaft. Then pull the front panel toward you to remove it.
• Installation method
Align the tabs of the front panel with the grooves, and push all the way in.
Then close slowly. Push the center of the lower surface of the panel firmly to
engage the tabs.
2. Removing and installing front grille.
•Removalmethod
1) Remove front panel to remove the air filter.
2) Remove 2 screws from the front grille.
3) In front of the {{{ mark of the front grille, there are 3 upper hooks.
Lightly pull the front grille toward you with one hand, and push down on the
hooks with the fingers of your other hand.
When there is no work space because the unit is close to ceiling
CAUTION
Be sure to wear protection gloves.
Place both hands under the center of the front grille, and while pushing up, pull it toward you.
• Installation method
1) Install the front grille and firmly engage the upper hooks (3 locations).
2) Install 2screws of the front grille.
3) Install the air filter and then mount the front panel.
Push the
rotating shaft
of the front
panel into the
groove.
¡¡¡ mark area
(3 locations)
Upper hook
Lightly pull the front
grille toward you with
one hand, and push
down on the hooks with
the fingers of your other
hand. (3 locations)
Push
down.
Upper hook
Upper hook
2) Pull toward you.
1) Push up.
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5■English
Preparation before Installation
3. How to set the different addresses.
When 2 indoor units are installed in 1 room, the
2 wireless remote controllers can be set for
different addresses.
1) Remove the metal plate electrical wiring
cover.
(Refer to the Removal/attachment methods
of metal plate electrical wiring covers.)
2) Cut the address jumper (JA) on the printed
circuit board.
3) Cut the address jumper (J4) in the remote
controller.
4. When connecting to an HA system.
(Wired remote controller, central remote controller etc.)
1) Remove the metal plate electrical
wiring cover.
(Refer to the Removal/
attachment methods of metal
plate electrical wiring covers.)
2) Attach the connection cord to the
S21 connector and pull the
harness out through the notched
part in the figure.
3) Replace the electrical wiring cover
as it was, and pull the harness
around, as shown in the figure.
• Removal methods of metal plate electrical wiring covers
1) Remove the front grille.
2) Remove the electrical wiring box. (1 screw)
3) Raise the 2 upper parts of the metal plate electrical wiring cover, pull the parts frontward, and remove the 3 tabs.
4) Slide the metal plate electrical wiring cover upward and remove the 2 tabs on the lower side.
ADDRESS
JA
ADDRESS
JA
EXIST 1
CUT 2
J4
J4 ADDRESS
EXIST 1
CUT 2
HA connector
(S21)
HA connector
(S21)
Lay the HA cord as
shown in the figure.
3) Raise the 2 upper parts of the
metal plate electrical wiring cover,
pull the parts frontward, and
remove the 3 tabs.
4) Slide the metal plate electrical wiring
cover upward and remove the 2 tabs on
the lower side.
Ta b
Slide
Slide
Pull
Pull
Slide
Pull
Ta b
Screw
2) Remove the electrical
wiring box. (1 screw)
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English
• Attachment methods of metal plate electrical wiring covers
Attach the metal plate electrical wiring covers as shown below.
1) Lean the metal plate electrical wiring cover as shown in the figure and attach tab (1) on the lower side to the electrical
wiring box.
2) Attach tab (2) on the lower side of the metal plate electrical wiring cover.
3) Push in the upper part of the metal plate electrical wiring cover and attach the 3 tabs.
Refrigerant Piping Work
, install as described in the installation manual supplied with the multi outdoor unit.
1. Flaring the pipe end.
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.
4) Flare the pipe.
5) Check that the flaring is properly made.
WARNING
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.
Tab (1)
Tab (2)
Tab (1)
Ta b
CAUTION
Make sure that the shaded part ( ) will
not go inside the electrical wiring box.
With a multi indoor unit
A
A
(Cut exactly at
right angles.) Remove burrs
Flaring
Set exactly at the position shown below.
Die 0-0.5mm
Clutch-type
Flare tool for R410A
1.0-1.5mm
Clutch-type (Rigid-type)
1.5-2.0mm
Wing-nut type (Imperial-type)
Conventional flare tool
Flare’s inner
surface must
be flaw-free.
The pipe end must
be evenly flared in
a perfect circle.
Make sure that the
flare nut is fitted.
Check
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7■English
Refrigerant Piping Work
2. Refrigerant piping.
CAUTION
1) Use the flare nut fixed to the main unit. (To prevent cracking of the flare nut by aged deterioration.)
2) To prevent gas leakage, apply refrigeration oil only to the inner surface of the flare. (Use refrigeration oil for R410A.)
3) Use torque wrenches when tightening the flare nuts to prevent damage to the flare nuts and gas leakage.
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.
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
for bending.
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.
2) Be sure to insulate both the gas and liquid piping and to provide insulation
dimensions as below.
3) Use separate thermal insulation pipes for gas and liquid refrigerant pipes.
Gas side Liquid side Gas pipe thermal insulation Liquid pipe
thermal insulation
25/35/42 class 50 class 25/35/42 class 50 class
O.D. 9.5mm O.D. 12.7mm O.D. 6.4mm I.D. 12-15mm I.D. 14-16mm I.D. 8-10mm
Minimum bend radius Thickness 10mm Min.
30mm or more 40mm or more 30mm or more
Thickness 0.8mm (C1220T-O)
Do not apply refrigeration
oil to the outer surface.
Flare nut
Apply refrigeration oil to
the inner surface of the
flare.
Do not apply refrigeration
oil to the flare nut avoid
tightening with over torque.
[Apply oil]
Torque wrench
Piping union
Flare nut
Spanner
[Tighten]
Flare nut tightening torque
Gas side Liquid side
25/35/42 class 50 class
3/8 inch 1/2 inch 1/4 inch
32.7-39.9N
l
m 49.5-60.3N
l
m 14.2-17.2N
l
m
(330-407kgf
l
cm) (505-615kgf
l
cm) (144-175kgf
l
cm)
Wall
If no flare cap is
available, cover the
flare mouth with
tape to keep dirt or
water out.
Rain
Be sure to
place a cap.
Finishing tape
Liquid pipe insulation
Inter-unit wiring
Gas pipe
insulation
Gas pipe
Humidifying
hose
Drain hose
Liquid pipe
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English
Indoor Unit Installation
1. Installing the mounting plate.
• 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
2. Boring a wall hole and installing wall embedded pipe.
• 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 70mm 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 hole
gap with putty.
Liquid pipe end
Drain hose position
Through the wall
hole φ70mm
* The removed pipe port cover can be
kept in the mounting plate pocket.
Gas pipe end
Bilt size: M10
Place a leveler on raised tab.
Recommended mounting
plate retention spots.
(5 spots in all) Bilt size: M10
φ70 φ70
44.5 45.5
295
Use tape measure
as shown.
Position the end
of a tape measure
at .
115
56.5
147.5
450 103
400
200
44.5
60.5
45.5
175.5
Keep here the piece cut out
from the unit for piping.
60.5
61 149
278.5 50
800
36
Removed pipe
port cover
A
Mounting plate
unit: mm
Inside Outside
Caulking
Wall embedded pipe
(field supply)
Wall hole cover
(field supply)
Wall embedded pipe
(field supply)
φ70
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Indoor Unit Installation
3. Inter-unit wiring.
1) Open the front panel, then remove the service lid.
2) Pass the inter-unit wiring from the outdoor unit through the
feed-through wall hole and then through the back of the indoor
unit. Pull them through the front side. Bend the ends of tie
wires upward for easier work in advance. (If the inter-unit
wiring ends are to be stripped first, bundle wire ends with
adhesive tape.)
3) Press the bottom frame of the indoor unit with both hands to
set it on the mounting plate hooks. Make sure the wires do not
catch on the edge of the indoor unit.
4. Humidifying hose installation work.
CAUTION
• Be sure to use humidifying hose sold as optional accessory. (KPMH996A10S (10m set), KPMH996A15S (15m set))
1) The length of the humidifying hose needs to be set to ensure humidifying capacity. Cut off any excess hose.
Use the remote controller to set the hose length. (Refer to page 13.)
• Attach a cover to the end of each humidifying hose so that no moisture or foreign substance will go into the hose when
leaving the hose without being connected to the outdoor and indoor units.
• When laying the humidifying hose inside the wall, block the ends of the humidifying hose with tape or the like to prevent
water or anything else from entering it until it is connected to the indoor unit and outdoor unit ducts.
• Do not bend the humidifying hose more than 90°.
• Use caution not to deform the cuff while installing the humidifying hose.
4-1. Connecting to the indoor unit.
• Connect the cuff side of the humidifying hose to the indoor unit duct.
• Use the humidifying hose of suitable length as shown below.
10m set: the 8m hose
15m set: the 2m hose
• When connecting the humidifying hoses of the indoor and outdoor units, refer to the installation manual provided to
the outdoor unit.
Hang indoor unit’s hook here.
Inter-unit wiring
Mounting plate
A
When stripping the
ends of inter-unit wiring
in advance, bind right
ends of wires with
insulating tape.
Insert as far as possible
so that there are no gaps.
Cut the cuff
at this part.
• Left-back piping
It is easier to connect the hose
with the front grille removed.
Cuff
Humidifying
hose
Connect the
cuff side of the
humidifying
hose to the
indoor unit duct.
The protrusion of the
humidifying hose from the
wall hole is about 100mm.
(If it is too long, cut the humidifying hose
and bond the separately sold cuff with
adhesive for vinyl to adjust the length.)
Pulling out the
humidifying hose in a
downward direction.
Pulling out the
humidifying hose in a
sideward direction.
Approx. 100mm
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English
5. Laying piping, hoses, and wiring.
• Connect the humidifying hose to the indoor unit duct.
See 4. Humidifying hose installation work for details.
• Lay the piping, drain hose and humidifying 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, drain hose and humidifying hose
together using insulation tape.
5-1. Right-side, right-back, or right-bottom piping.
1) Wrap the pipes, hoses and inter-unit wiring using insulation tape as shown in the piping bundle diagram.
2) Put all the pipes through the through-hole in the wall and hook the indoor unit onto the mounting plate.
3) Connect the pipes.
5-2. Left-side, left-back, or left-bottom piping.
Drain hose
Gas pipe
Liquid pipe
Inter-unit wiring
Humidifying
hose
Insulation tape
Piping bundle diagram
Cut out the
piping-through hole.
Install with a
downward slope. Cut out the
piping-through hole.
• Right-back piping • Right-bottom piping• Right-side piping
Humidifying hose
Humidifying hose
Humidifying hose
It is recommended
to use the elbow.
A
Mounting plate
A
• Replacing onto the left side
1) Remove the insulation fixing screws on the right
to remove the drain hose.
2) Remove the drain plug on the left side and
attach it to the right side.
3) Insert the drain hose and tighten with the
screws which were removed at STEP 1).
How to replace the drain plug and drain hose.
Drain hose attachment position
* The drain hose is on the back of the unit.
Front side of unit
Attachment on the right side
(factory default)
Attachment on the left side
Drain hose Drain hose
Indoor unit
fixing screw
Insulation
fixing screw
Right sideLeft side
How to set drain plug
No gap.
Insert a hexagon wrench (4mm).
Do not apply lubricating oil
(refrigeration oil) when inserting.
Application of causes deterioration
and drain leakage of the plug.
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11 ■English
Indoor Unit Installation
1) Replace the drain plug and drain hose. (How to replace the drain plug and drain hose.)
2) Pull in the refrigerant piping and lay it so that it matches the liquid and gas piping marked on the mounting plate.
3) Hook the indoor unit onto the mounting plate.
4) Connect the pipes. If it is difficult to do, remove the front grille first.
5) Wrap the insulation on the
piping with insulation tape. If
you are not replacing the drain
hose, store it in the location
shown as right figure.
6) While exercising care so that the inter-unit wiring do not catch indoor
unit, press the bottom edge of indoor unit with both hands until it is
firmly caught by the mounting plate hooks. Secure indoor unit to the
mounting plate with screws (M4 × 12L).
5-3. Wall embedded piping.
Follow the instructions given under
1) Insert the drain hose to this depth so it won’t be pulled out of the drain
pipe.
Left-side, left-back, or left-bottom piping .
• Left-back piping • Left-bottom piping• Left-side piping
Cut out the
piping-through hole.
Refrigerant pipe
Drain hose
Humidifying hose
Refrigerant pipe
Cut out the
piping-through hole.
Humidifying hose
Refrigerant pipe
A
A
Drain hose
Bind with
plastic tape.
A Mounting plate
Wrap insulating tape around the bent portion
of refrigerant pipe.
Overlap at least half the width of the tape
with each turn.
Caulk this hole
with putty or
caulking material.
Refrigerant
pipes
Bottom frame
H M4 × 12L (2 point)
Mounting
plate
A
Drain hose
Inter-unit wiring
Inner wall
Vinyl chloride
drain pipe
(VP-30)
Drain hose50mm
or more
Insert the drain hose
to this depth so it
won’t be pulled out
of drain pipe.
Outer wall
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English
6. Wiring.
, install as described in the installation manual supplied with the multi outdoor
unit.
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) In case of connecting to an adapter system. Run the remote controller cable and attach the S21.
6) Shape the wires so that the service lid fits securely, then close service lid.
WARNING
1) Do not use tapped wires, strand wires, extensioncords, or starburst connections, as they may cause overheating, 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.
7. Drain piping.
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.
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 13mm)
as a joint.
With a multi indoor unit
12 3
Terminal block
Electrical component box
Wire retainer
Use the specified
wire type.
Shape wires so that the
service lid will fit securely.
Firmly secure wire retainer so that
wires sustain no external stress.
1
2
3
123 LN
When wire length exceeds
10m, use 2.0mm diameter wires.
H05RN
Firmly fix the wires with
the terminal screws.
Outdoor unit
Indoor
unit
Firmly fix the wires with
the terminal screws.
The drain hose should
be inclined downward.
No trap is permitted.
Do not put the end
of the hose in water.
Indoor unit
drain hose
φ18
Extension drain hose
Heat insulation tube
(field supply)
Drain hose supplied with
the indoor unit
Commercially available drain
socket
(nominal diameter 13mm)
Commercially available rigid
polyvinyl chloride pipe
(nominal diameter 13mm)
φ18
01_EN_3P232706-1A.fm Page 12 Friday, November 21, 2008 4:19 PM

13 ■English
Setting the Humidifying Hose Length
CAUTION
If the humidifying hose length is not set or it is set incorrectly, the humidifying capacity may diminish or strange sound may
occur from humidifying hose.
1. Setting the humidifying hose length.
Set the humidifying hose length to ensure humidifying capacity. Use the remote
controller to set the humidifying hose length. When doing this, power on the unit
as communication is established between the unit and the remote controller.
Be sure to direct the remote controller toward the indoor unit while setting the
humidifying hose length.
(The humidifying hose length includes the rear of the indoor unit.)
• Set the humidifying hose length according the following procedure after
check the installed hose length.
1) Press “MODE” button and “TEMP” button (2 locations) at the same time.
(To cancel, do not operate the button for 60 seconds. The display will return to
normal.)
2) Press “TEMP ” button and select “ ” (Pipe set mode).
3) Press “MODE” button to activate the Pipe set mode.
(When the unit receive signal, the sound emitted. Be sure to check the sound.
If the sound is not heard, press “MODE” button again.)
4) Pressing “TEMP ” button changes the humidifying hose length.
You may set the hose length to 6 levels:
“”,“”,“”,“”,“”,“”.
5) Hold “MODE” button for more than 2 seconds.
The display changes to “ ” (Pipe check mode).
6) Press “MODE” button again to activate the pipe check mode.
7) Press “TEMP ” button and select the hose length.
Beep sound indicate that the setting of the remote controller accords or
disaccord with the unit.
• accord: a long beep
• disaccord: a short beep
If you set the wrong humidifying hose length, press “CANCEL” button.
The display returns to step 4). Reset the hose length.
8) Hold “MODE” button for more than 5 seconds.
The humidifying hose length setting is complete and the display returns to
normal.
2. When the unit cannot be powered on.
When setting the humidifying hose length without powering on the unit, the indoor unit does not
receive the information at step 3) and 5) shown above. However, the remote controller stores the
humidifying hose length information.
(When the customer uses the unit, the humidifying hose length information is send to the indoor unit
to be set.)
Pipe set mode (Hose length setting)
Pipe check mode (Hose length check)
A
C
B
A: TEMP button
B: MODE selector button
C: CANCEL button
LCD
(Set point)
(Set point;
long beep)
Cancel
01_EN_3P232706-1A.fm Page 13 Friday, November 21, 2008 4:19 PM

■English 14
English
Trial Operation and Testing
1. Trial operation and testing.
1-1 Measure the supply voltage and make sure that it falls in the specified range.
1-2 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 controller 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.
1-3 To perform a test run for HUMID HEAT operation, activate test run mode from the remote controller following
the instructions below and select the HUMID HEAT operation.
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.
2. Test items.
* When the bubble sound is heard, water may be in the humidifying hose.
Do the HOSE DRY operation.
Test items Symptom
(diagnostic display on RC) Check
Indoor and outdoor units are installed properly on solid bases. Fall, vibration, noise
No refrigerant gas leaks. Incomplete cooling/heating function
Refrigerant gas and liquid pipes and indoor drain hose extension are thermally
insulated. Water leakage
Draining line is properly installed. Water leakage
System is properly earthed. Electrical leakage
The specified wires are used for inter-unit wiring connections. Inoperative or burn damage
Indoor or outdoor unit’s air intake or exhaust has clear path of air.
Stop valves are opened. Incomplete cooling/heating function
Indoor unit properly receives remote controller commands. Inoperative
No strange noise from the humidifying hose. Bubble sound*
1) Press “ON/OFF” button to turn on the system.
2) Press “TEMP” button (2 locations) and “MODE” button at the same time.
3) Press “MODE” button twice.
(“ ” will appear on the display to indicate that Trial Operation mode is selected.)
4) Trial run mode terminates in approx. 30 minutes and switches into normal mode. To quit a trial operation, press
“ON/OFF” button.
Trial operation from remote controller
1) Press “TEMP” button (2 locations) and “MODE” button at the same time.
2) Press “TEMP ” button and select “D” (DRYING mode).
3) Press “MODE” button to start the HOSE DRY operation.
HOSE DRY operation will work about 30 minutes.
(To cancel the HOSE DRY operation, hold “MODE” button for more than 5 seconds.)
4) Activate test run for HUMID HEAT operation again, check that the bubble sound is not heard from the humidifying hose.
HOSE DRY operation for humidifying hose
01_EN_3P232706-1A.fm Page 14 Friday, November 21, 2008 4:19 PM

(0901) HT
3P232706-1A M08B051A
Two-dimensional bar code is a code
for manufacturing.
00_CV_3P232706-1A.fm Page 2 Friday, November 7, 2008 6:01 PM