Daikin FBQ20EAVAK User manual

FBQ48EAVMK
00_CV_3P370016-3D.fm Page 1 Thursday, October 20, 2016 09.38 AM
SPLIT SYSTEM Air Conditioner
INSTALLATION MANUAL
MODELS
(Ceiling mounted duct type)
READ THESE INSTRUCTIONS CAREFULLY BEFORE INSTALLATION.
KEEP THIS MANUAL IN A HANDY PLACE FOR FUTURE REFERENCE.
English
FBQ20EAVAK
FBQ24EAVAK
FBQ36EAVAK
FBQ45EAVAK
FBQ48EAVAK
ﺐﻴﻛﺮﺘﻟﺍ ﻞﻴﻟﺩ
ءﺍﻮﻬﻟﺍ ﻒﻴﻴﻜﺗ ﺯﺎﻬﺟﻢﺴﻘﻨﻤﻟﺍ ﻡﺎﻈﻨﻟﺍ
ﺔﻴﺑﺮﻌﻟﺍ
ﺯﺮﻄﻟﺍ
(ﻲﺋﺍﻮﻫ ﻯﺮﺠﻤﺑ ﺩﻭﺰﻣ ﻒﻘﺳ ﻒﻴﻴﻜﺗ)
.ﺐﻴﻛﺮﺘﻟﺍ ﻞﺒﻗ ﺔﻳﺎﻨﻌﺑ ﺕﺍﺩﺎﺷﺭﻹﺍ ﻩﺬﻫ ﺃﺮﻗﺍ
.ﺪﻌﺑ ﺎﻤﻴﻓ ﻪﻴﻟﺇ ﻉﻮﺟﺮﻠﻟ ﻪﻴﻟﺇ ﻝﻮﺻﻮﻟﺍ ﻞﻬﺴﻳ ﻥﺎﻜﻣ ﻲﻓ ﻞﻴﻟﺪﻟﺍ ﺍﺬﻬﺑ ﻆﻔﺘﺣﺍ

01_EN_3P370016-3D.fm Page 1 Thursday, October 20, 2016 09.38 AM
FBQ48EAVMK
1 English
SPLIT SYSTEM Air Conditioner Installation manual
CONTENTS
1. SAFETY PRECAUTIONS...............................................................................................1
2. BEFORE INSTALLATION ..............................................................................................4
3. SELECTING INSTALLATION SITE................................................................................6
4. PREPARATIONS BEFORE INSTALLATION .................................................................7
5. INDOOR UNIT INSTALLATION .....................................................................................9
6. REFRIGERANT PIPING WORK ..................................................................................10
7. DRAIN PIPING WORK .................................................................................................13
8. DUCT WORK ...............................................................................................................15
9. ELECTRIC WIRING WORK .........................................................................................16
10. WIRING EXAMPLE AND HOW TO SET THE REMOTE CONTROLLER....................16
11. FIELD SETTING...........................................................................................................22
12. TEST OPERATION ......................................................................................................25
1. SAFETY PRECAUTIONS
Meaning of WARNING and CAUTION notices.
Both are important notices for safety. Be sure to follow them.
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.
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. Ask the customer to store
the installation manual along with the operation manual for future reference.
This air conditioner comes under the term “appliances not accessible to the general public”.
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.
•When installing the unit in a small room, take measures against to keep refrigerant concentration from
exceeding allowable safety limits in the event of refrigerant leakage.
Contact the place of purchase for more information. Excessive refrigerant in a closed ambient can lead to
oxygen deficiency
•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.
Please read the these " SAFETY CONSIDERATIONS" carefully before installing air conditioning unit and
be sure to install it correctly. After completing the installation, make sure that the unit operates properly
during the start-up operation.
Please instruct the customer on how to operate the unit and keep it maintained.
Also, inform customers that they should store this installation manual along with the operation manual for
future reference.
FBQ20EAVAK
FBQ24EAVAK
FBQ36EAVAK
FBQ45EAVAK
FBQ48EAVAK

English 2
•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.
•Carry out the specified installation work after taking into account strong winds, typhoons or earthquakes.
Failure to do so during installation work may result in the unit falling and causing accidents.
•Make sure that a separate power supply circuit is provided for this unit and that all electrical work is carried
out by qualified personnel according to local laws and regulations and this installation manual.
An insufficient power supply capacity or improper electrical construction may lead to electric shocks or fire.
•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 or fire.
A high surge current from lightning or other sources may cause damage to the air conditioner.
•Be sure to install the earth leakage breaker.
Failure to install the earth leakage breaker may result in electric shocks or fire.
•Be sure to switch off the unit before touching any electrical parts.
Touching a live part may result in electric shock.
•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 overheating 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.
•Do not touch any refrigerant that leaks out of refrigerant piping joints or connections.
Touching it may cause frostbite.
CAUTION
•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.
•Install the indoor and outdoor units, power cord and connecting wires at least 1 meter away from televisions
or radios to prevent picture interference and noise.
(Depending on the incoming signal strength, a distance of 1 meter may not be sufficient to eliminate noise.)
•Install the indoor unit as far away from fluorescent lamps as possible.
Remote controller (wireless kit) transmitting distance can be shorter than expected in rooms with electronic
fluorescent lamps (inverter or rapid start types).
01_EN_3PN06583-10W.fm Page2 Thursday, March 24, 2011 9:03 AM
Consult yourlocal dealer regardingwhat to do in case of refrigerant leakage, when the air coditioner is to
be installed in a small room,it is necessary to take proper measures so that the amount of any leaked
refrigerant does not exceed theconcentration limit in the event of leakage. Otherwise, this may lead to
an accident due to oxygen depletion.
•
In a domesticenvironment thisproduct may cause radio interference in whichcase the user may be
required to take adequate measures.
Do not allow childrentoclimb on the outdoor unit and avoid placing objects on the unit.
Injury may result if the unit becomes loose and falls.
Make sure to provide for adequate measure in order to prevent that the outdoor unit beusedas a
shelter by small animals.
Small animalsmaking contact with electrical partscan cause malfunctions, smoke or fire. Please instruct
the customer to keep the area aroundthe unit clean.
Install in a machine room that is free of moisture. The unit is designed forindoor use.
Disposal requirements
Dismantlingof the unit,treatment of the refrigerant, of oil and of other parts must be done in
accordance with relevant local and national legislation.
•
•
•
•
•

English3
•Do not install the air conditioner in the following locations:
1. Where there is a high concentration of mineral oil spray or vapour (e.g. a kitchen).
Plastic parts will deteriorate, parts may fall off and water leakage could result.
2. Where corrosive gas, such as sulphurous acid gas, is produced. Also areas that are rich in sodium
such as seashores.
Corroding of copper pipes or soldered parts may result in refrigerant leakage.
3. Near machinery emitting electromagnetic radiation.
Electromagnetic radiation may disturb the operation of the control system and result in a malfunction
of the unit.
4. Where flammable gas may leak, where there is carbon fibre or ignitable dust suspensions in the air,
or where volatile flammables such as paint thinner or gasoline are handled.
Operating the unit in such conditions may result in fire.
01_EN_3PN06583-10W.fm Page2 Thursday, March 24, 2011 9:03 AM
SPECIAL NOTICE OF PRODUCT
• Refrigerant
• The refrigerant R410A requires that strict Precautions be observed for keeping the system clean,
dry and tightly sealed.
A. Clean and Dry
Strict measure must be taken to keep impurities (including SUNISO oil and other mineral oils
as well as moisture) out of the system.
B. Tightly sealed
R410A contains no chlorine, does not destroy the ozone layer and so does not reduce the earth’s
protcetion against harmful ultraviolet radiation. R410A will contribute only slightly to the greenhouse
effect if released into the almosphere
• Since design pressure is 4.0 MPa or 40 bar (for R407C units: 3.3MPa or 33bar), the thickness of
pipes must be greater than previously. Since R410A is a mixed refrigerant, the required additional
refrigerant must be charged in its liquid state. (If the system is charged with refrigerant in its gaseous
state, due to composition change, the system will not function normally). The indoor units is designed
for R410A use.
See the catalogue for indoor unit models that can be connected. (Normal operation is not possible
when connecting units that are originally designed for other refrigerants)

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English
2. BEFORE INSTALLATION
Do not exert pressure on the resin parts when opening the unit or when moving it after opening.
Be sure to check the type of R410A refrigerant to be used before doing any work. (Using an incorrect
refrigerant will prevent normal operation of the unit.)
•When opening the unit or moving it after opening, be sure to lift it by holding on to the lifting lugs without
exerting any pressure on other parts, especially, drain piping, and flange.
•Decide upon a line of transport.
•Leave the unit inside its packaging while moving, until reaching the installation site. Use a sling of soft
material, where unpacking is unavoidable or protective plates together with a rope when lifting, to avoid
damage or scratches to the unit.
•Refer to the installation manual of the outdoor unit for items not described in this manual.
•Do not dispose of any parts necessary for installation until the installation is complete.
•In order to protect the indoor unit from damage, use packing materials to protect the unit after carrying until
the installation starts.
•Do not use the unit in locations with high salt content in the air such as beachfront property, locations where
the voltage fluctuates such as factories, or in automobiles or marine vessels.
2-1 ACCESSORIES
Check the following accessories are included with your unit.
Refer to Fig. 1 for the location of the accessories.
Name Metal clamp
(1)
Drain hose
(2)
Screws for duct
flanges (3)
Insulation for
fitting Sealing pad
Quantity 1 pc. 1 pc. As described in table
below 1 each –
Shape for liquid pipe (4)
for gas pipe (5)
1 pc.
Large (Dark gray) (6)
2 pcs.
Middle (Dark gray) (7)
Name Clamp (8) Washer fixing
plate (9)
Wire sealing material
(10) Washer (11) Wire fixing bracket (12)
Quantity 9 pcs. 4 pcs. 2 pcs. 8 pcs. 2 pcs.
Shape
Name Wire fixing screw
(13)
(Other)
•Operation manual
•Installation manual
Quantity 2 pcs.
Shape
Do not dispose of any parts necessary for installation until the installation is completed.
M5×16
20 • 24 type
36 • 45 • 48 type
18
26
Thin
Thick
Small (Gray)
M4×8
01_EN_3PN06583-10W.fm Page3 Thursday, March 24, 2011 9:03 AM

English5
2-2 OPTIONAL ACCESSORIES
•The optional remote controller are required for this indoor unit.
•These are two types of remote controllers: wired and wireless. Select a remote controller according to
customer request and install in an appropriate place.
(When installing, follow the instructions in the manual included with the remote controller.)
FOR THE FOLLOWING ITEMS, TAKE SPECIAL CARE DURING CONSTRUCTION AND
CHECK AFTER INSTALLATION IS FINISHED.
a. Items to be checked after completion of work
Remote controller
BRC1C61 / BRC1D61 / BRC1E62
epytderiW
26C4CRBepytsseleriW
k
cehCruccootylekilsitahw,enodylreporptonfIdekcehcebotsmetI
Are the indoor unit and outdoor unit fixed
firmly? The unit may drop, vibrate or make noise.
Is the outdoor unit fully installed? The unit may malfunction or components
burn out.
Is the gas leak test finished? It may result in insufficient cooling or
heating.
heating.
heating.
heating.
Is the unit fully insulated? (Refrigerant pip-
ing, drain piping, and duct) Condensate water may drip.
Does drainage flow smoothly? Condensate water may drip.
Does the power supply voltage correspond
to that shown on the name plate?
The unit may malfunction or the
components burn out.
components burn out.
components burn out.
Are wiring and piping correct? The unit may malfunction or the
Is the unit safely grounded? It may result in electric shock.
Is wiring size according to specifications? The unit may malfunction or the
Is something blocking the air outlet or inlet
of either the indoor or outdoor units?
(This can lead to malfunction or decreased
performance due to decreased air volume.)
It may result in insufficient cooling or
Does the cold air (warm air) blow properly
during the cooling (heating) operation?
It may result in insufficient cooling or
Are refrigerant piping length and additional
refrigerant charge noted down?
The refrigerant charge in the system is not
clear.
Has the field setting done (as necessary)? It may result in insufficient cooling or
Fig. 1
Operation manual
Installation manual
(1) - (13)
01_EN_3PN06583-10W.fm Page 4 Thursday, March 24, 2011 9:03 AM
•BRC4C62 cannot be used for the indoor unit FBQ48EAVMK. If required, use wireless type BRC4C64

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English
b. Items to be checked at time of delivery
* Also review the “1. SAFETY PRECAUTIONS”
Points for explanation about operations
2-3 NOTE TO THE INSTALLER
•Be sure to instruct customers how to properly operate the unit (especially cleaning filters, operating
different functions, and adjusting the temperature) by having them carry out operations themselves while
looking
at the manual.
3. SELECTING INSTALLATION SITE
•
When opening the unit or moving it after opening, be sure to lift it by holding on to the hanger bracket without
exerting any pressure on other parts, especially piping (refrigerant piping and drain piping) and other resin parts.
•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.
(1) Select an installation site where the following conditions are fulfilled and that meets your
cus
tomer’s approval.
•Where optimum air distribution can be ensured.
•Where nothing blocks air passage.
•Where condensate can be properly drained.
•Where the ceiling is strong enough to bear the indoor unit weight.
•Where the false ceiling is not noticeably on an incline.
•Where sufficient clearance for maintenance and service can be ensured. (Refer to Fig. 2)
•Where there is no risk of flammable gas leakage.
•Where piping between indoor and outdoor units is possible within the allowable limit.
(Refer to the installation manual for the outdoor unit.)
CAUTION
•The indoor and outdoor units and the power supply wiring and remote controller cord must be installed
at least 1m away from any televisions or radios. This is to prevent interference with picture and sound
reception. (Interference may occur even at 1m away depending on the reception quality.)
•If installing the wireless kit, the distance of the signal sent from the remote controller might be shorter if
there are fluorescent lights which are electrically started (such as with inverters, rapid starters, etc.) in
the room. The indoor unit should be installed as far away from fluorescent lights as possible.
Did you set the external static pressure? It may result in insufficient cooling or
heating.
Did you check that no wiring connection
screws were loose? Electric shock or fire.
Items to be checked Check
Did you attach the control box lid, the air filter, air inlet grille and air outlet grille?
Did you explain about operations while showing the instruction manual to your customer?
Did you hand the instruction manual over to your customer?
Did you explain the customer the handling and cleaning methods of the field supplies
(e.g., the air filter, air inlet grilles, and air outlet grille)?
Did you deliver instruction manual, if any, for the field supplies to the customer?
The items with WARNING and CAUTION marks in the instruction manual are the items
pertaining to possibilities for bodily injury and material damage in addition to the general usage
of the product. Accordingly, it is necessary that you make a full explanation about the described
contents and also ask your customers to read the instruction manual.
01_EN_3PN06583-10W.fm Page 5 Thursday, March 24, 2011 9:03 AM

English7
(2) Use suspension bolts for installation. Check if the location for the installation is strong enough to support
the weight of the unit, reinforce it if necessary, and install using suspension bolts.
4. PREPARATIONS BEFORE INSTALLATION
(1) Check the positional relationship between the ceiling opening hole and the hanging bolt of the unit.
•For the maintenance, inspection, and other servicing purposes of the control box, prepare one of the
following service spaces.
1. Inspection hatch 1 (450 × 450) for the control box and a minimum space of 300 mm for the lower part
of the product. (Refer to Fig. 3)
2. Inspection hatch 1 (450 × 450) for the control box and inspection hatch 2 for the lower part of the
product (see axial direction view A-1). (Refer to Fig. 4)
3. Inspection hatch 3 for the lower part of the product and the lower part of the control box (see axial
direction view A-2). (Refer to Fig. 4)
(length: mm)
Ceiling
Floor surface
* The H1 dimension indicates the height of the
product.
* Determine the H2 dimension by maintaining
a downward slope of at least 1/100 as
specified in “7. DRAIN PIPING WORK”.
Min. 20Min. 300
Min. 450
Min. 2500
Min. 700 (service space)
(If no ceiling board is provided.)
*H1=300
*H2=Min. 620
[Required installation place]
Fig. 2
The dimensions indicate the
minimum required space of
installation.
700
631
(Hanging bolt pitch)
Inspection hatch 1
(450×450)
Inspection hatch
Control box
Control box
Ceiling
B
C
(Hanging bolt pitch)
Bottom of unit
Air inlet
Air outlet
Hanging bolt (× 4)
*H3=Min. 300
Fig. 3
Case 1
01_EN_3PN06583-10W.fm Page 6 Thursday, March 24, 2011 9:03 AM

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English
(2) Mount the canvas ducts to the air outlet and inlet so that the vibration of the air conditioner will not be
transmitted to the duct or ceiling. Apply a sound-absorbing material (insulation material) to the inner wall
of the duct and vibration insulation rubber to the hanging bolts (refer to 8. DUCT WORK).
(3) Open installation holes (if the ceiling already exists).
•Open the installation holes on the ceiling. Lay the refrigerant piping, drain piping, power line,
transmission wiring, and remote controller wiring for the piping and wiring connection port of the unit.
In the case of the installation of a wireless remote controller, refer to the installation manual provided
with the wireless remote controller.
Refer to 6. REFRIGERANT PIPING WORK, 7. DRAIN PIPING WORK, and 10. WIRING EXAMPLE
AND HOW TO SET THE REMOTE CONTROLLER.
•The ceiling framework may need reinforcement in order to keep the ceiling horizontal and prevent the
vibration of the ceiling after the installation holes are opened. For details, consult your construction or
interior contractor.
(4) Install the hanging bolts. Make sure that the hanging bolts are M10 in size.
•Use hole-in anchors if the hanging bolts
already exist; otherwise use embedded
inserts and embedded foundation bolts so that
they will withstand the weight of the unit.
Adjust the distance to the ceiling surface in
advance.
* Determine the H3 dimension by
maintaining a downward slope
of at least 1/100 as specified in
“7. DRAIN PIPING WORK”.
007007
Inspection hatch
Inspection hatch 1
(450×450)
Inspection hatch 2
(Same as the indoor
unit size or more)
Inspection hatch 3
(Same as the indoor
unit size +300 or more)
Control box
Control box
Control box
Inspection hatch
(Ceiling opening)
Ceiling
Axial direction view A-1 Axial direction view A-2
Min. D=B+300
Min. 200B
*H3=Min. 20
(length: mm)
A
Fig. 4
Model B C D
1000 1038 1300
1400 1438 1700
20 • 24 type
36 • 45 • 48 type
Case 2, 3
Note) All the above parts are field supplied.
Installation example
Ceiling slab
Anchor
Long nut or turn-buckle
Hanging bolt
Indoor unit
01_EN_3PN06583-10W.fm Page 7 Thursday, March 24, 2011 9:03 AM

English
9
5. INDOOR UNIT INSTALLATION
〈It may be easier to install accessories (sold separately) before installing the indoor unit. Refer to the
installation manuals provided to the accessories as well.〉
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) Temporally install the indoor unit.
•Connect the hanging brackets to the hanging bolts. Be sure to use and tighten the nut and washer (11) for
each hanging bracket from both upper and lower sides of the hanging bracket.
(Refer to Fig. 5) At that time,
the fall of the washer (11) for the hanging bracket can be prevented if the washing fixing plate (9) is used.
CAUTION
•During the installation work, perform the curing of the air outlet and protect the resin drain pan of
the indoor unit from the intrusion of foreign substances, such as welding spatters.
Otherwise, water leakage may occur as a result of damage, such as hole damage, to the resin drain pan.
(2) Make adjustments so that the unit will be in the right position.
(3) Check the level of the unit.
(4) Remove the washer fixing plates for
the falling prevention of the washers
for the hanging brackets, tighten the
nuts on the upper side, and securely
fix the unit.
CAUTION
•Use the level and check that the unit is installed horizontally. (4-directions)
•In the case of using a vinyl tube in place of the level, put the both edges of the vinyl tube in close contact
with the bottom of the product to make levelness adjustment.
If the unit is installed at a slant with the drain pipe side set high, in particular, the float switch will not operate
normally and water leakage may result.
Washer (11) (accessory)
Part to be procured in the field
Washer fixing plate (9)
(accessory)
Insert
Tighten from above and below
(Double nut)
]srehsawfodohtemgnixiF[]stekcarbgnignahgnixiF[
Fig. 5
Nut on the upper side
Hanging bracket
Level
Bottom of product
Vinyl tube
01_EN_3PN06583-10W.fm Page 8 Thursday, March 24, 2011 9:03 AM

10English
6. REFRIGERANT PIPING WORK
〈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. (20mm or thicker) Condensate may form on the surface of the
insulating material.〉
〈Be sure to check the type of R410A refrigerant to be used before doing any work. (Using an incorrect
refrigerant will prevent normal operation of the unit.)〉
CAUTION
This product is designed to be used with new refrigerant (R410A). Always observe the precautions on the
following when installing.
•Use a pipe cutter and flare suitable for the type of refrigerant.
•Apply ester oil or ether oil around the flare section before connecting.
•Use the flare nut provided to the unit. Do not use a different flare nut (class 1), or otherwise refrigerant
leakage may result.
•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.
(Refer to Fig. 6)
•Refer to “Table 1” for the dimensions of flare nut
spaces.
•Use the flare nut included with the unit main body.
•When connecting the flare nut, apply ester oil or
ether oil to the flare section (inside only), and spin
3-4 times before screwing in.
(Refer to Fig. 7)
CAUTION
•Do not let oil get on the screw holders on the dressing board. Oil can weaken the screw holders.
•Refer to “Table 1” to determine the proper tightening torque.
•Be careful not to damage the flare section.
Torque wrench
Spanner
Piping union
Flare nut
Fig. 6
Fig. 7
Coat here with ester or etheroil.
01_EN_3PN06583-10W.fm Page 9 Thursday, March 24, 2011 9:03 AM

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Table 1
CAUTION
•Over-tightening the flare nut may break it and/or cause the refrigerant to leak.
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:
Unless followed the tightening instruction (it is loose tightening), it will lead to the refrigerant leakage (slow
leak) and the device malfunction (it does not sufficiently cool or heat).
CAUTION
For local insulation, be sure to insulate local piping all the way into the pipe connections inside the
machine.
Exposed piping may cause condensation or burns on contact.
•Make absolutely sure to execute heat insulation works on the pipe-connecting section after checking gas
leakage by thoroughly studying the following figure and using the attached heat insulating materials for
fitting (4) and (5). (Fasten both ends with the clamps (8).) (Refer to Fig. 8)
•Wrap the middle sealing material (7) around the insulation for fitting (4) and (5) for the joint (flare nut part).
•Make sure that the joint of the insulation for fitting (4) and (5) for the joint on the liquid piping and gas piping
side faces upward.
Pipe size Tightening torque (N·m) Flare dimensions
A (mm) Flare
φ 9.5 (3/8”) 32.7 – 39.9 12.8 – 13.2
φ 15.9 (5/8”) 61.8 – 75.4 19.3 – 19.7
Pipe size Further tightening angle Recommended arm length of tool
φmm002.
xorppAseerged09ot06)”8/3(5.9
φmm003.xorppAseerged06ot03)”8/5(9.51
A
45˚±2˚
R0.4-0.8
90˚±2˚
01_EN_3PN06583-10W.fm Page 10 Thursday, March 24, 2011 9:03 AM

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English
•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.
Heat insulation procedure for gas piping
Insulation material for piping
(on unit side)
Insulation material for piping (field supply)
Clamp (8) (accessory)
Flare nut joint
Insulation for fitting (5) (accessory)
Middle sealing pad (7) (accessory)
Wrap the insulation material around the
portion from the surface of the main unit
to the upper part of the flare nut joint.
Insulation material for piping (field supply)
Wrap the insulation material around the
portion from the surface of the main unit
to the upper part of the flare nut joint.
Heat insulation procedure for liquid piping
Insulation material for piping
(on unit side) Make sure that the seam faces upward.
Make sure that the seam faces upward.
Attached to the surface.
Attached to the surface.
Clamp (8) (accessory)
Main unit
Flare nut joint
Insulation for fitting (4) (accessory)
Middle sealing pad (7) (accessory)
Gas pipe
Liquid pipe
Fig. 8
Nitrogen
Pressure-reducing valve
Hands valve
Taping
Refrigerant piping
Part to be
brazed
Nitrogen
Fig. 9
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•Nitrogen should be set to 0.02MPa with a pressure-reducing valve if brazing while inserting nitrogen into
the piping. (Refer to Fig. 9)
•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 thechlorine based flux is
used, it will cause pipe corrosion or, in particular, if the flux contains fluorine, it will damage the refrigerant oil.)
•When the airtight test is performed for the indoor unit and inter-unit piping after indoor unit installation, be
sure to refer to the installation manual for the indoor unit or technical guide for airtight pressurization and
refrigerant piping installation.
•Shortage of refrigerant due to air purge or losing the additional refrigerant charging may cause the failure
of the unit (does not sufficiently cool or heat).
Be sure to refer the installation manual or the engineering guide for the outdoor unit at the refrigerant piping
work.
CAUTION
•Do not use anything such as the oxidation inhibitor when brazing. (Residues may result in the clogging pipe
or parts damage.)
7. DRAIN PIPING WORK
(1) Remove the drain socket cover. (for transportation)
(2) Conduct drain piping work.
Check that the piping ensures proper draining.
•Make sure that the diameter of the piping excluding the rising
part is the same as or larger than the diameter of the
connecting pipe (vinyl chloride pipe with an outer diameter
of 32 mm and a nominal inner diameter of 25 mm).
•Make sure that the piping is short enough with a downward
slope of at least 1/100 and that there is no air bank formed.
No drain trap is required.
CAUTION
•The drain piping will be clogged with water and water leakage may result if the water is accumulated in the
drain piping.
•Conduct drain-up piping work if the gradient is insufficient.
•Attach some support brackets at 1 to 1.5 m intervals for the prevention of piping deflection.
•Be sure to use the drain hose (2) and metal clamp (1).
Insert the drain hose (2) deep into the base of the drain
socket, and securely fasten the metal clamp (1) within the
taped part on the insertion front end of the hose.
Be sure to fasten the screw of the metal clamp (1) until the
margin of the screw thread decreases to 4 mm or less.
Drain socket cover
(for transportation)
Drain socket
Refrigerant
piping
Screw (4 portions)
Supporting hanger
Downward slope of at least 1/100
1 - 1.5 m
(accessory)
Metal clamp (1)
Tape
(accessory)
Drain hose (2)
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NOTE
Be sure to follow the instructions as below.
•Do not connect the drain piping directly to a sewer that smells of ammonia.
The ammonia in the sewer may reach through the drain piping and corrode the heat exchanger of the
indoor unit.
•Do not bend or twist the provided drain hose (2) in order not to impose excessive force on the hose.
(Doing so may result in water leakage.)
•Take the procedure shown in the following illustration to perform concentrated drain piping.
•Select the diameter of the concentrated drain piping to suit the capacity of equipment connecting to the
concentrated drain piping (see the equipment design sheet).
(3) Check the smooth draining of the piping on completion of the installation of the piping.
•Provide approximately one liter of water gradually into the drain pan through the water inlet on the
bottom of the drain socket or the outlet.
(4) Be sure to conduct heat insulation work on the following portions, or otherwise water leakage may
occur as a result of dew condensation.
•Drain piping indoors
•Drain socket
The drain piping will be clogged with
water and water leakage may result if the
water is accumulated in the drain piping.
Concentrated drain piping
Maintain a downward slope of at least
1/100 so that no air bank will be formed.
Min. 100 mm
Ceiling slab
Metal clamp (1) (accessory)
Drain hose (2) (accessory)
Support bracket
1 - 1.5 m
Drain pan
Screw
Water inlet lid
Refrigerant piping
Air outlet
Drain socket Plastic water
container
Water inlet
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•On completion of the drainage check, refer to the following illustration, and use the provided large
sealing pad (6) and heat insulate the metal clamp (1) and drain hose (2).
8. DUCT WORK
Pay the utmost attention to the following items and conduct the ductwork.
•Check that the duct will not be in excess of the setting range of external static pressure for the unit. (Refer
to the technical datasheet for the setting range.)
•Attach a canvas duct each to the air outlet and air inlet so that the vibration of the equipment will not be
transmitted to the duct or ceiling.
Use a sound-absorbing material (insulation material) for the lining of the duct and apply vibration insulation
rubber to the hanging bolts.
•At the time of duct welding, perform the curing of the duct so that the sputter will not come in contact with
the drain pan for the filter.
•If the metal duct pass through a metal lath, wire lath, or metal plate of a wooden structure, separate the duct
and wall electrically.
•Be sure to heat insulate the duct for the prevention of dew condensation. (Material: Glass wool or styrene
foam; Thickness: 25 mm)
•Be sure to attach the field supply air filter to the air inlet of the unit or field supply inlet in the air passage on
the air suction side. (Be sure to select an air filter with a duct collection efficiency of 50 weight percent.)
•Explain the operation and washing methods of the locally procured components (i.e., the air filter, air inlet
grille, and air outlet grille) to the customer.
•Locate the air outlet grille on the indoor side for the prevention of drafts in a position where indirect contact
with people.
•
The air conditioner incorporates a function to adjust the fan to rated speed automatically.
(11. FIELD SETTING)
Therefore, do not use booster fans midway in the duct.
Connection method of ducts on air inlet and outlet sides.
•Connect the field supply duct in alignment with the inner side of the flange.
•Connect the flange and unit with the flange connection screw (3).
•Wrap aluminum tape around the flange and duct joint in order to prevent air leakage.
CAUTION
Connect the flange and unit with the flange connection screw (3) regardless of whether the duct is con-
nected to the air inlet side.
Make sure that the
seam faces upward.
Metal clamp (1)
(accessory)
Large sealing pad (6)
(accessory)
4 mm max.
Unit
Insulation material
(field supply)
Canvas duct
(field supply)
Flange on air inlet side
(provided with the unit)
Insulation material
(field supply)
Air inlet Air outlet
Screws for duct
flanges (3)
(accessory) Screws
for duct
flanges (3)
(accessory)
Flange on air outlet side
(provided with the unit)
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9. ELECTRIC WIRING WORK
WIRING INSTRUCTIONS
•Electric wiring work must be conducted by electrician authorized by power companies. (Only licensed
electrician can conduct electric work and earth connections.)
•All wiring must be performed by an authorized electrician.
•Be sure to install an earth leakage breaker to the outdoor unit.
(This installation of an earth leakage breaker is mandatory for the prevention of electric shocks and fire
disasters.)
•Install the earth leakage breaker which can handle harmonics.
(This unit has an inverter, so an interrupter capable of handling high frequencies is needed to prevent
malfunction of the interrupter itself.)
•Be sure to use earth leakage breaker dedicated for earth leakage protection in combination with the load
break switch with fuse or breaker for wiring.
•Make sure that 230V is specified wiring between the indoor and outdoor units and between indoor units.
•Do not turn on the power supply (of the indoor unit) until all the installation work is completed.
•Be sure to earth the air conditioner.
•Do not connect the earth wire to gas pipes, plumbing pipes, lightning rods, or telephone earth wires.
•Gas pipes: might cause explosions or fire if gas leaks.
•Plumbing: no earth effect if hard vinyl piping is used.
•Telephone earth wires or lightning rods: might cause abnormally high electric potential in the earth
during lighting storms.
•The earth is needed in order to reduce the noise generated by the unit’s inverter and influence on other
appliances and to release the charge built up in the product box by leaked current.
•For electric wiring work, refer to also “WIRING DIAGRAM” attached to the unit body.
•Never connect the power supply wire to the terminal block for remote controller wire, or otherwise the entire
system may be damaged.
•For remote controller wiring details, refer to the installation manual attached to the remote controller.
•Do not touch the printed circuit board ASSY during the wiring work. Otherwise, it may cause damage.
10. WIRING EXAMPLE AND HOW TO SET THE REMOTE CONTROLLER
10-1 Connection of wiring between units, earth wire and for the remote controller cord
(Remove the control box lid as shown below and connect each wire.)
(1) Remove the control box lid.
Screw
(3 portions)
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(2) Lay the wires in the control box
through the wire inlet on the side of
the control box.
CAUTION
•Do not lay the remote controller wiring along with the wiring the units, power supply wiring or other electric
wiring in the same route. Separate the remote controller wiring at least 50 mm from the wiring the units,
power supply wiring or other electric wiring, or otherwise malfunctions or failures may be caused by
external electric noise that may interfere with the remote controller wiring.
•For the installation and wiring of the remote controller, refer to the remote controller installation manual
provided with the remote controller.
•For wiring the units, power supply wiring, refer to the wiring diagram as well.
•Be sure to connect the remote controller wiring correctly to the right terminal block (X2M).
Low-voltage wiring inlet
•Remote controller wiring
(Low voltage)
High-voltage wiring inlet
•
Wiring the units (High voltage)
• Power supply wiring (High voltage)
•Ground wiring (High voltage)
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(3) Follow the instructions below, and lay the wires in the control box.
WARNING
Trim and lay the wiring neatly and attach the control box lid securely.
An electric shock or fire may result if the control box lid catches any wiring or the wires push up the lid.
(4) Put the control box lid, and wrap the wire sealing
material (Small) (10) around the wires so as to
block the wire through holes.
P1 P2 F1 F2
PROHIBITED
Remote controller
wiring (No polarity)
Remote controller
wiring (Low voltage)
Never connect wiring the units
and the power supply wiring.
Connection method of remote
controller terminals (X2M)
•If stranded wires are used,
do not solder the front end
of the wires.
Twist and fix the upper part so
that the wires will not drop out.
Fix the cord with the
clamp (8) to the wire
fixing bracket provided
to the control box.
Fix the wires with clamp (8)
to the wire fixing bracket
provided to the control box.
Insert the cord into the wire clips
provided with the control box.
Earth L1 2 3 N
Connection method of
power supply terminals
Power supply terminals (X1M)
Wiring
the units
Power supply
wiring
Indoor unit
Outdoor unit
(Terminal block)
Match both numbers.
Connecting wiring between units
(Terminal block)
Wire through holes
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CAUTION
•After all the wiring connections are done, fill in any gaps in the through holes with putty or insulation
(procured locally) to prevent small animals and insects from entering the unit from outside. (If any do get in,
they
could cause short circuits in the control box.)
(5) Mount the provided wire fixing bracket (12) with
the wire fixing screw (13). Fix each wire with the
provided clamp (8).
Precautions to be taken for power supply wiring
Use a round crimp-style terminal for connection to the
power supply terminal block.
In case it cannot be used due to unavoidable reasons, be sure to observe the following instructions.
(Loose wiring and similar problems may result in abnormal heat build-up.)
•In wiring, make certain that prescribed wires are used, carry out complete connections, and fix the wires so
that external forces are not applied to the terminals.
•If the strand wire is used, do not solder it.
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 below for the tightening torque of the terminal screws.
Tightening torque (N·m)
69.0ot08.0rellortnocetomerrofkcolblanimreT
44.1ot81.1stinuehtgniriwrofkcolblanimreT
44.1ot81.1lanimrethtraE
Wiring the units
Power supply wiring
Ground wiring
Remote controller
wiring
Fixing use
Wire fixing screw (13) (accessory)
Wire fixing bracket (12) (accessory)
Clamp (8) (accessory)
Electric wireRound crimp-style terminal
Attach insulation sleeve
Good Wrong Wrong
Connect wires of the
same gauge to both
side. (GOOD)
Do not connect wires
of the same gauge to
one side. (WRONG)
Do not connect wires
of different gauges.
(WRONG)
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