SAFETY PRECAUTIONS FDC-HKX 19.5 APPLICATION DATA

SAFETY PRECAUTIONS FDC-HKX 19.5   APPLICATION DATA

FDC-HKX

19.5 APPLICATION DATA

SAFETY PRECAUTIONS

Please read these “Safety Precautios” first then accurately execute the installation work.

Though the precautionary points indicated herein are divided under two headings, WARNING and CAUTION , those points which are related to the strong possibility of an installation done in error resulting in death or serious injury are listed in the

WARNING

section. However, there is also a possibility of serious consequences in relationship to the points listed in the

CAUTION

section as well.

In either case, important safety related information is indicated, so by all means, properly observe all that is mentioned.

After completing the installation, along with confirming that no abnormalities were seen from the operation tests, please explain operating methods as well as maintenance methods to the user (customer) of this equipment, based on the owner’s manual.

Moreover, ask the customer to keep this sheet together with the owner’s manual.

WARNING

This system should be applied to places of office, restautant, residence and the like. Application to inferior environment such as engineering shop could cause equipment malfunction.

Please entrust installation to either the company which sold you the equipment or to a professional contractor. Defects from improper installations can be the cause of water leakage, electric shocks and fires.

Execute the installation accurately, based on following the installation manual. Again, improper installations can result in water leakage, electric shocks and fires.

When a large air-conditioning system is installed to a small room, it is necessary to have a prior planned countermeasure for the rare case of a refrigerant leakage, to prevent the exceeding of threshold concentration.

In regards to preparing this countermeasure, consult with the company from which you purchased the equipment, and make the installation accordingly. In the rare event that a refrigetant leakage and exceeding of threshold concentration does occur, there is the danger of a resullant oxygen deficiency accident.

For installation, confirm that the installation site can sufficiently support heavy weight. When strength is insufficient, injury can result from a falling of the unit.

Execute the prescribed installation construction to prepare for earthquakes and the strong winds of typhoons and hurricanes, etc. Improper installations can result in accidents due to a violent falling over of the unit.

For electrical work, please see that a licensed electrician executes the work while followig the safety standards related to electrical equipment, and local requlations as well as the installation instructions, and that only exclusive use circuits are used.

Insufficient power source circuit capacity and defective installment execution can be the cause of electric shocks and fires.

Accurately connect wiring using the proper cable, and insure that the external force of the cable is not conducted to the terminal connection part, through properly securing it. Improper connection or securing can result in heat generation or fire.

Take care that wiring does not rise upward, and accurately install the lid/service panel. Its improper installation can also result in heat generation or fire.

When setting up or moving the location of the air-conditioner, do not mix air etc. or anything other than the designated refrigerant within the refrigeration cycle.

Always use accessory parts and authorized parts for installation construction. Using parts not authorized by this company can result in water leakage, electric shock, fire and refrigerant leakage.

CAUTION

Execute proper grounding. Do not connect the ground wire to a gas pipe, water pipe, lightning rod or a telephone ground wire. Improper placement of ground wires can result in electric shock.

The installation of an earth leakage breaker is necessary depending on the established location of the unit. Not installing an earth leakage breaker may reslut in electric shock.

Do not install the unit where there is a concern about leakage of combustible gas.

The rare event of leaked gas collecting around the unit could result in an outbreak of fire.

For the drain pipe, follow the installation manual to insure that it allows proper drainage and thermally insulate it to prevent condensation. Inadequate plumbing can result in water leakage and water damage to interior items.

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19.5.1 Installation of indoor unit

(1) Ceiling recessed type (FDT)

(a) Selection of installation location

1)

2)

3)

4)

5)

6)

Select location where the space above ceiling is larger than those mentioned below and perfect draining can be assured.

Places where perfect drainage can be prepared and sufficient drainage gradient is available.

Places free from air distrubances to the air inlet and outlet of the indoor unit.

Places with the environmental dew-point temperature is lower than 28˚C and the relative humidity is less than 80%. (When installing at a place under a high humidity environment, pay sufficient attention to prevention of dewing such as thermally insulating the unit properly.)

Do not place where the unit is exposed to oil splashes or steam (e.g. kitchens and machine plants). (Istallation and use at such places will causes the performance drop, corrosion in the heat exchanger and damage in molded synthetic resin parts.)

Do not place where corrosive gas (such as sulfurous acid gas) or inflammable gas (thinner, gasoline, etc.) is generated or remains. Installation and use at such

FDT28, 36, 45, 56, 71, 90

FDT112, 140

Type

Installtation space

1‚000 and over

Space above ceiling (h)

Obstacle

Over 270mm

Over 330mm

(mm)

1‚000 and over places will cause corrosion in the heat exchanger and damage in molded synthetic resin parts.

7) Do not place adjacent to equipment generating electromagnetic waves or high-frequency waves such as in hospitals, Generated noise may cause malfunctioning of the controller.

(b) Preparation for installation

Ceiling opening dimension : 860 to 890 square

Hang bolt pitch : 780

F

1) Ceiling hole size and Position of suspension bolts.

a) The pattern sheet may shrink or expand as humidity

A

B

Gas refrigerant piping

Liquid refrigerant piping

C Drain piping connecting hole changes, so check the actual size before use.

b) The size of ceiling opening can be adjusted within

G

D Power intake hole the range shown below. Bring the unit body to the ceiling opening right in the center so as not to be set

E

F

G

Hang bolt

Outside air intake hole

Supply air branch duct connecting hole

2) aside and so that space between a ceiling opening end and the outside of the unit body becomes equal to that on the opposite side.

c) The size of the pattern sheet equals to the maximum size of the square ceiling opening.

Location of pipes

For the location of pipe, see the exterior dimension.

Drain hose

(accessory)

Attach on site.

C

332

267

840

310

A

B

E

Model

FDT28, 36, 45,

56, 71, 90

FDT112, 140

c

Unit : mm d

210

270

260

320

(c) Hanging

Arrange four sets of a hang bolt (M10 or M8), a nut for it, a

plain washer and a spring washer on site.

Hanger

D

Control box

When there is the ceiling

1. Make an 860 to 890 mm-square cutout on the ceiling.

Refer to the outside dimensions of packing cardboard container.

s

Align the center of ceiling cutout and the center of unit.

2. Decide the hang bolt position (675 780).

3. Use four hang bolts and fix them so that each bolt can resist the pull out load of 50 kgf.

4. Decide the length of hang bolt to approx. 70 mm above the ceiling surface.

5. After hanging in the unit, fix the attached level gauge and secure the height of unit.

6. Use a transparent hose filled with water to check the levelness of unit.

(The maximum allowable height difference between both ends of unit is 3 mm.)

Drain

Level gauge

Refrigerant piping

Hose

Main body

Hang bolt

Nut

Washer

Spring

Washer

In-door unit

10~25

Fix the level gauge in alignment with this face of supply air grill.

Request

For the hang bolt whose length exceeds 1.3m, use the M10 size hang bolt and moreover combine a diagonal member to the hang bolt for reinfocement.

Adjust so that level gauge surface and the lower surface of ceiling are in matching.

Supply air grill

Ceiling member

Level gauge (insulation)

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FDC-HKX

(d) Drain Piping

1) Drain piping should always be in downhili grade (1/50 ~ 1/100) and avoid riding across and elevation or making traps.

Good piping

Suspension bolts

1.5 m ~ 2 m

Improper piping

Avoid riding across an elevation

Air vent

Keep free from traps

Do not pipe under water

Heat insulation

A downhill grade of 1/100 or more

2)

3)

4)

5)

6)

7)

8)

9)

When connecting the drain pipe to unit, pay sufficient attention not to applay excess force to the piping on the unit side. Also, fix the piping at a point as close as possible to the unit.

For drain pipe, use hard PVC general purpose pipe VP-25(I.D.1”) which can be purchased locally. When connecting, insert a PVC

Drain socket

Stage difference part

Drain hose pipe end securely into the drain socket before tightening securely using the attached drain hose and clamp. Adhesive must not be used connection of the drain socket and drain hose (accessory).

When consturcting drain piping for several units, position the com-

Pipe cover (large)

[for insuation]

(accessory)

VP25 joint

(field purchased)

Main unit mon pipe about 100 mm below the drain outlet of each unit as shown in the sketch. Use VP-30(11/4”) or thicker pipe for this purpes.

Be sure to provide heat insulation to hard PVC pipes of indoor placement.

Do not ever provide an air vent.

Drain socket

Drain hose

Clamp

(accessory)

Adhesion

(accessory)

Pipe cover (small)

[for insuation]

(accessory)

VP25

(field purchased)

Pipe cover

[for insuation]

(field purchased)

The height of the drain head can be elevated up to a point 700 mm ablve the ceiling and, when an obstacle exisits in the ceiling space, elevate the piping to avoid the obstacle using an elbow or corresponding gadget. When doing this, if the stretch for the needed height is too high, the back-flow quantity of drain at the event of interruption of the operation gets too much and it may cause overflow at the drain pan. Therefore, make the height of the drain pipe within the distance given in the sketeh below.

Avoid positioning the drain piping outlet at a place where generation of odor may be stimulated. Do not lead the drain piping direct into a sewer from where sulfur gas may generate.

The purpose of drain hose is to absorb minute discrepancy of the unit or the drain piping occurred when they are installed. Therefore, when it is bent intentionally or used under expanded condition, it may be damaged and result in water leakage.

Secure the elevation as high as possible

(approx. 100 mm)

A downhill grade of

1/100 or more

295 ~ 325 mm

Drain hose

VP30

100 mm or less

Drainage Test

VP25 joint

(field purchased)

Procedures

Pour water into a convex joint

If the electrical work has not been completed, connect a convex joint in the drain pipe connection to provide a water inlet.

Then, check if water leaks from the piping system and that drain flows through the drain pipe normally.

2

Check at the exhaust port if drain is flowing.

(Note) Conduct this test paying attention to rotating sound of the drain motor.

842

Put the tip of the feed water pump in the drain pan of the unit body

FDC-HKX

(e) Fixing of Decorative Panel (The panel fixing bolts are attached on the panel.)

1)

2)

Check with the accessory level gauges that indoor unit height and the size of ceiling hole are correct.

Remove the level gauges from the indoor unit before fixing the decorative panel.

Screw two bolts out of four accessory bolts less than 5 mm in the indoor unit diagonally.

3)

4)

Hang the panel on the two bolts and fix them temporarily.

Tighten the bolts fixed temporarily and the remaining two bolts.

5)

6)

Screw the remaining two bolts, and tighen all (four) bolts.

Connect the louver motor connector (red) to the panel respectively.

If the louver motor is not operated by remote control, check if the connector is connected correctly, and turn off the power for more then 10 seconds, then reset it.

Panel Joint Setting

The panel can turn 30 mm to the left and to the right in all (approx 2

°

), and the indoor unit turns 30 mm to the left and to the right in all (approx 3

°

), But, it cannot turn if the panel is secured.

Limit in Fixing Panel

1

Fix the panel only in the direction shown in the figure.

Louver motor

Electrical equipment box

Refrigerant piping Drain piping

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FDC-HKX

(2) 2-way outlet ceiling recessed type (FDTW)

(a) Selection of installation location

1) This unit is a ceiling surface direct return air and direct supply air type.

Install the unit a place the allows air to reach every part of the room, in accordance with the shape and heigh of the room.

Installation space

Unit : mm

100 or more

100 or more

1500 or more

1500 or more

2) This unit permits connecting a branch duct (

B

200 mm) according to the method shown in the figure below so that air disribution may be improved to the shape of the room. (For the connecting port of the duct, refer to the exterior dimension on page 760.)

200 mm

Air interruption

3) Cold air throw

Models

Item

Standerd

UHi

FDTW28, 45, 56 type

4.0

4.5

Note (1) The cold air throw is the same in 2 directions.

Conditions:

1.Unit height: 3.0 m above the floor

2.Fan speed: Hi

3.Location: Freee space without obstacle

4.The throw is as the per the table above.

5.Air velocity at the throw: 0.3(m/s)

FDTW71, 90 type

4.5

5.0

FDTW112 type

4.7

5.2

Unit : m

FDTW140 type

5.0

5.5

4)

5)

6)

7)

Places where chilied or heated air circulates freely. When the installation heiht exceeds 3.5m, warmed air stays close to the ceiling. In such cases, suggest your client users to install air circulators.

Places where perfect drainage can be prepared and sufficient drainage gradient is available.

Places free from air disturbances to the return air port and supply hole of the indoor unit, places where the fire alarm may not malfunction to short circuit.

Places with the environmental dew-point temperature is lower than 28

°

C and the relative humidity is less than 80%. (When installing at a place under a high humidity environment, pay suffcient attention to prevention of dewing such as thermally insulating the unit properly.)

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FDC-HKX

8) Places exposed to oil splashes or steam (e.g. kitchens and machine plants.)

Installation and use at such places will incur deteriorations in the performance or corrosion with the heat exchanger or damage in molded synthetic resin parts.

Places where corrosive gas (such as sulfurous acid gas) or inflammable gas (thinner, gasoline, etc.) is generated or remains.

9)

Installation and use at such places will cause corrosion in the heat exchanger and damage in molded synthetic resin parts.

10) Place adjacent to equipment generating electromagnetic waves or high-frquency waves such sa in hospitals. Generated noise may cause malfunctioning of the controller.

(b) Preparations for installation

1) Ceiling hole and suspension bolt positions a) The pattern sheet shrinks or expands as humidity changes, so check the actual size before use.

b) The ceiling hole sizes and suspension bolt sizes are shown in the following figure.

40

1

Ceiling hole size

2

Suspension bolt pitch

3 4

90

Center panel

Control box

70

50

Dimension table

Models

FDTW28, 45, 56 type

Mark

1

1015

FDTW71, 90 type

FDTW112, 140 type

1260

1730

2

885

1130

1600

590

825

3

Unit : mm

4

468 417

540

775

(c) Installation

For the suspension bolt, use four M10 or W 3/8 bolts and secure so that each bolt can withstand a 50 kg/f pullout load.

Use a suspension bolt length that extends approximately 95 mm for the ceiling surface.

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FDC-HKX

A. If there is a ceiling

1) Open the hole in the installation location to the ceiling

2) opening dimensions.

Install the suspension bolts (procured locally) at the

3)

4) designated locations.

(Use care as the center of the spacing for the suspension bolts is not at the center of the panel.)

Hang the unit, use the four bolts to mount the pattern paper provided to the panel mounting section and adjust the height.

Use a level or transparent hose with water in it to confirm that the unit is level. If the unit is not level, problems such as water leakage or improper operation of the float switch could occur.

5) After confirming the above, secure the unit in position.

Outlet port

Pattern paper

Ceiling surface

Adjust the position of the main unit so that the bottom surface of the pattern paper and the bottom surface of the ceiling align.

Vinyl tube

Printed surface

Heat insulation

A downhill grade of 1/100 or more

Panel mounting position

<Panel mounting position>

B. If ceiling is to be installed later

1)

2)

3)

Follow steps A2 to A4 in the previous section "A. If there is a ceiling" to install the unit and mount the pattern paper.

When the ceiling is installed, the outer perimeter of the pattern paper can be referred to for making the opening in the ceiling.

After checking the height and that the unit is level, secure the unit in position.

<Pattern paper mounting configuration>

(d) Drain piping

1) Drain piping should always be in a downhill grade (1/50-1/100) and avoid riding across an elevation or making traps.

Good piping

Improper piping

Suspension bolts 1.5 m ~ 2 m

Avoid riding across an elevation

Air vent

Keep free from traps

Do not pipe under water.

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FDC-HKX

2)

3)

When connecting the drain pipe to the unit, pay suffcient attention not to apply excess force to the piping on the unit side. Also, fix the piping at a point as close as possible to the unit.

For drain pipe, use hard PVC ganeral purpose pipe VP-25 (I.D.1'') which can

Drain socket

Level difference part

Drain hose be purchased locally. When connecting, insert a PVC pipe end securely into the drain socket before tightening securly using the attached drain hose and clamp. Adhesive must not be used connection of the drain socket and drain hose (accessory).

Pipe cover (large)[insulation]

(accessory

Joint for VP-25

(local procurement)

Unit

Drain socket

Pipe cover (small)[insulation]

(accessory)

Clamp

(accessory)

Drain hose

(accessory)

Adhesion

VP-25

(local procurement)

Pipe cover [insulation]

(local procurement)

4) When constructing drain piping for several units, position the common pipe about 100mm below the drain outlet of each unit as shown in the sketch below. Use VP-30 or thicker pipe for this pupose.

Secure the elevation as high as possible

(approx. 100 mm)

5)

6)

7)

A downhill grade of

1/100 or more

VP30

Be sure to provide heat insulation to hard PVC pipes of indoor placement.

Do not ever provide an air vent.

The height of the drain head may be elevated up to a point 750mm above the ceiling and, when an obstacle exists in the ceiling space, elevate the piping to avoid the obstacle using an elbow or corresponding gadget. When doing this, if the stretch for the needed height is too high, the back-fiow quantity of drain at the time of interruption of the operation gets too much and it may cause overflow at the drain pan. Therefore, make the height of the drain pipe withing the distance given in the drawing below.

295~325 100 mm or less

Drain hose (accessory)

Joints for VP-25 (local procurement)

8) Avoid positioning the drain piping outlet at a place where ganeration of odor may be stimulated. Do not lead the drain piping direct into a sewer from where sulfur gas may generate.

When Using a Natural Drain Port

1) Remove the heat insulating material and rubber plug of the natural drain port.

2) By using the natural drain connecting tube (option), connect the drain pipe (VP-20) and completely clamp it with a clamp.

Note (1) If the drain pipe is directly connected to the natural drain port, the drain pan becomes unremovable.

3) Disconnect the connector CNR (blue, 2P) for the drain motor.

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FDC-HKX

Note (1) If the connector remains connected, drain water is discharged from the standard pipe connecting port, leading to water leakage.

Clear flexible tubing (optional)

Natural drain port

Hard vinyl chloride piping.

Heat

General piping VP-20 insulation

Rubber plug

Remove

CNR (Blue·2P)

Control box

Drainage Test

When using the standard drain port, execute a drainage test after completion of electric work.

1

During the test run, make sure that drain flows properly through the piping and that no water leaks from connections.

2

Be sure to conduct this test even when the unit is installed in the heating season.

3

In case of a new building, conduct the test before it is furnished with the ceiling.

Piping penetration cover

Insert the tip of the supply water pump approximately

50 mm in a downward direction.

1)

2)

Inject about 1,000cc by using a feed water pump from the grommet on the drain pump side.

At the drain port (transparent portion), check if drainage is performed.

3) After completion of the drain test, completely perform heat insulation fot the drain pipe up to the main unit.

(g) Fixing of Panel ( The panel fixing bolts are attached on the panel. )

Note (1) Care should be exercised in handling the supply air port on the panel because it is easily depressed by finger nail.

1) Check with the accessory level gauges that the indoor unit height and the size of ceiling hole are correct.

Notes (1) Remove the level gauge from the indoor unit befroe fixing the panel.

(2) Remove the Air inlet panel from the panel proper.

Procedure for Dismounting the Air inlet Panel

Air inlet panel

Panel proper

Remove

Pin (B)

Panel outer frame

Pin (A)

Panel inner frame

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FDC-HKX

a) b)

Remove the panel from the pin (A) in the order of the arrows

1

and

2

.

Open the panel slightly as shown by the arrow

3

and move it to the arrow

4

. Then remove it from the pin (B).

2)

3)

4)

5)

6)

Screw two bolts out of four accessory bolts less than 5mm in the panel diagonally.

Hook the panel on the two bolts and set it temporarily.

Tighten the bolts fixed temporarily and the remaining two bolts.

Connect the louver motor connector (white, 3P) and the limit switch connector (white, 2P) to the panel respectively.

When the louver motor cannot be operated by remote controller operation, check the connector connections and turn off the power suppy for 10 sceonds or more for restting.

For Ceiling Material Inlaid Panel

Ceiling material holding plate

Ceiling material

Air inlet panel

Ceiling Material Dimensions

Models

Item

Width

Length

FDTW28, 45, 56 type

300

970

FDTW71, 90 type

300

1215

Unit : mm

FDTW112, 140 type

300

1685

1 Remove the air inelt panel from panel proper.

2

Remove the ceiling holding plates (2 sheets) temporarily set on the suction panel with screws.

3

Install the ceiling material on the air intel panel and fix it with the ceiling holding plates so as not to produce any play.

Note (1) Use a ceiling material with a thickness of 6-15mm and a side length of 300mm or more.

Ceiling material thickness : 6-10 mm 10 ~ 15 mm

Ceiling Material Instaling Direction

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FDC-HKX

(3) 1-way outlet ceiling recessed type (FDTS)

Preparation of indoor unit

It can be installed by either one of the following methods. Select the most adequate method for your particular case.

A

Standard installation

Ceiling

Installation example and limitation

3m or less

Floor

Note (1) In the case of installing on the high ceiling, part of indoor unit requires some modification.

B

Higher ceiling

Ceiling

Floor

3m ~ 4m

Procedures of rework

Installation on higher ceiling

Adhere the insulation materials attached to the direct blow panel on the blow outlet of indoor unit.

Blow outlet

Insulation materials

(a) Selection of installation location

1) Where cool and hot air will be distributed sufficiently.

Where the installation heigh exceeds 3m, warmed air is likely to concentrate close to the ceiling. In such case, you should install also a circulator.

Reference

Cooled (warmed) air throw

Unit : m

Item

Reaching distance

Models

Standard Higher ceiling

All models

7

[ Conditions ]

1. Unit heigh

Standard ceiling: 2.4--3.0(m) above floor Higher ceiling: 3.0--4.0(m) above floor

2. Kind of operation: Hi

3. Place: Free space without obstruction;

4. Reaching distance means the horizontal distance for the wind to reach the floor.

5. Wind velocity at the reaching distance: 0.5m/s

Note (1) Wind capacity is UHi in case of a higher ceiling. It is value of Hi for other cases.

2) Where the ceiling has sufficient rigidity.

3) Where there is no obstacles in front of the suction intel and blow outlet.

4) It should be avoided such places as kitchen, machine factory, etc. where there profuse liquid splashes or thick steam.

5) Where the height of ceiling exceeds 200mm.

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FDC-HKX

6) Where a space as shown below can be secured.

Unit : mm

2000 or more

100 or more

100 or more

Obstacle

7)

8)

9)

It should be avoided where a machine generating high frequency waves is installed.

Select a place to branch the piping so that same distance will be a obtained for each of one way piping.

Where humidity may exceed 80% behind the ceiling or the dew point may exceed 28

°

C, adhere polyurethane foam materials

(t 10 or more) over the insulation materials on the external plate.

10) Where it is convenient for the piping and wiring to the outdoor.

11) Where protected from direct exposure to sun beams.

(b)

12) Where it is free from volatile gas generation.

Standard Iocation

1) Installation a) Ceiling hole size and position of suspension bolt

(Piping connection side)

(Air outlet)

1

(Suspension bolt pitch)

2

(Ceiling hole size)

3

(Panel dimensions)

4

30

(Ceiling ~ panel lap dimensions)

(Ceiling ~ panel lap dimensions)

Models

FDTS22, 28, 36, 45 type

Mark

FDTS71 type

1

990

1250

2

1230

1440

3

1290

1500

Unit : mm

4

180

145

b) Length of fixed suspension bolt (customer orderd parts M10)

[Reference] Suspension bolt pitch is adjustable within + 10mm in sidewise direction. Since there is no adjustment allowance in back and forth direction, determine the position exactly with a measure. (Lap margin between ceiling and panel is

30mm.)

Unit

Suspension bolt

(M10)

851

FDC-HKX c) Fixing of Suspension bolt.

Fix the bolts securely as shown below or by any other adequate means.

Hole-in anchor bolt

Hole-in plug

Insert

d) Installation

Suspension bolt, M10

Concrete

Drain pump box

Unit

Duct connection opening for blowing through lowered ceiling.

Suspension fixture (4 places)

Procedures

1

Install nuts on the Suspension bolts at onside. Suspension the suspension fixtures on the Suspension bolts first and then insert the remaining fixtures on the remaining Suspension bolts at and lock them with nuts.

2

Since the indoor unit and the panel height cannot be adjusted, adjust the height using an attached pattern before fixing the indoor unit.

Panel mounting hole

Ceiling board

Pattern

Pattern securing screw

A

(attached)

Using the external dimensions shown on the pattern as a guide, cut out an opening on the ceiling board.

Detail - Section A

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FDC-HKX

Check of levelness

Check the levelness as follows. Use a level gauge or adjust the levelness with the following method.

Adjust the bottom of main unit and the water level as shown below.

Piping side

Water injection

Water level

0~3 mm

Vinyl pipe

Slightly lower the piping side

2) Drain pipe

a) Set the drain pipe as a declining gradient (1/50 ~ 1/100) and avoid to cross an over-hand ridge or to allow a trap on the way.

Good piping

Improper piping

Support fixture 1.5m~2m

Crossing over-hang ridge

Air bleed

Insulation materials

Declining gradient

1/100 or more

Trap b) c) d) e)

When connecting the drain pipe, avoid undue stress being applied to the pipe at the unit side and fix the pipe at a point as close as possible to the unit.

A hard vinyl chloride pipe, general VP-25, which is available from markets is ideal for the drain pipe.

When installing the drain pipe, make sure to use the attached drain pipe, drain pipe clamp, and insulation materials for drain pipe clamp.

Insert the drain pipe to the base of outlet.

Securely tighten the drain pipe clamp.

Make sure to insulate the drain pipe clamp.

When there are plural number of drain pipes, arrange to position the converging pipe at about 100mm below the drain outlet as shown below. Use a pipe of VP-30 or higher for the converging pipe.

Should be as high as possible.

(Approx. 100 mm)

Declining gradient 1/100 or more

VP-30 f) g)

Make sure to provide the thermal insulation for the hard vinyl chloride pipe and drain socket provided indoor.

Air bleed should not be provided in any event.

When it is necessary to raise the drain head, the limitation is up to 600mm below the bottom face of ceiling where the unit is installed. The distance is the dimension of the pipe which is installed perpendicularly from a point close to the output for drain pipe connection.

295~325

853

854

FDC-HKX

Drain test

[Perform this before installing the ornament panel]

Perform this upon completion of electrical work.

Gradually introduce 2,000~3,000cc of water as shown below.

Drain piping connection port

Fill from outlet port

Pour water into a convex joint

(

If the electrical work has not been completed, connect a convex joint in the drain pipe connection to provide a water inlet.

Then, check if water leaks from the piping system and that drain flows through the drain pipe normally.

)

Connect the remote control switch and set to cooling operation. The drain pump will operate with the compressor on.

Test whether or not the water is draining while listening to the operating sounds of the electric motor for the drain water.

Unit

Check the drainage condition by using the transparent socket.

Drain hose (provided)

Check that water is draining smoothly and that there is no water dripping from the connections or other areas.

Mounting the Panel

1

Open the inlet grille and remove the air block panel from the inside. (Remove the 2 screws.)

Air block panel

FDC-HKX

2

Mount the two (M5 x 35) panel mounting screws to the indoor unit

A

Detail of Section A

3

Hang the panel on the two mounting screws on the indoor unit by using the two shaped holes. Slide the panel approximately 10 mm. Use the 5 panel mounting screws to secure the panel.

Sliding direction

4

Use the opening to connect the connectors for the louver motor and limit switches.

Opening

Ceiling opening

Connector

5

Reinstall the wind shield plate.

(c) Installation on higher ceiling

Adhere the insulation materials on the blow outlet of the indoor unit. All others are same as the standard installation.

855

FDC-HKX

(4) Cassetteria type (FDR)

(a) Preparation of indoor unit

Before of during the installation of the unit, assemble necessary optional panel, etc. depending on the specific type.

(b) Select places for installation satisfying following conditions and, at the same time, obtain the consent on the part of your client user.

1) Places where chilled or heated air circulates freely.

When the installation height exceeds 3 m, warmed air stays close to the ceiling. In such cases, suggest your client users to install air circulators.

2) Places where perfect drainage can be prepared and sufficient drainage.

3) Places free from air disturbances to the suction port and blowout hole of the indoor unit, places where the fire alarm may not malfunction or short-circuit.

4) Places with the environmental dew-point temperature is lower that 28

°

C and the relative humidity is less than 80%.

( When installing at a place under a high humidity environment, pay sufficient attention the prevention of dewing such as thermal insulation of the unit prperly.)

(c) Avoid installation and use at those place listed below.

1) Places exposed to oil splashes or steam (e.g. kitchens and machine plants).

Installation and use at such places incur deteriorations in the performance or corrosion with the heat exchanger or damage in molded synthetic vesin parts.

2) Places where corrosive gas (such as sulfurous acid gas) or inflammable gas (thinner, gasoline, etc) in generated or remains.

Installation and use at such places cause corrosion in the heat exchanger and damage in molded synthetic resin parts.

3) Places adjacent to equipment generating electromagnetic waves or high-frequency waves such as in hospitals.

Generated noise may cause malfunctioning of the controller.

(d) Preparation for installation

1) Selection of suspension pattern

When the unit is hanged from ceiling, select one of following patterns depending on the dimensions of the ceiling.

< Combination with silent panel >

Mark

A

Models

FDR22, 28, 45, 56

71, 90 type

365 mm or more

FDR112, 140 type

416 mm or more

< Combination with canvas panel >

Models

FDR22, 28, 45, 56

71, 90 type

Mark

FDR112, 140 type

A

495 mm or more

510 mm or more

856

FDC-HKX

2) Ceiling hole size and position of suspersion bolt

When boring at the ceiling, use the pattern sheet included in the accessory of the unit.

Leave the pattern sheet on the unit till decorative panel is installed.

< Combination with silent panel >

Models

FDR22, 28, 45,

56 type

Mark

A

786

FDR71, 80 type

986

57 57

FDR112, 140 type

1406

A

(Suspension bolt pitch)

B

(Celing hole size)

C

(Panel dimensions)

30

(Celing ~ panel lap dimensions)

B

Unit : mm

C

980 1040

1180

1600

1240

1660

< Combination with canvas panel >

Models

FDR22, 28, 45,

56 type

Mark

A

786

FDR71, 80 type

986

FDR112, 140 type

1406

B

804

Unit : mm

C

864

1004

1424

1064

1484

9

A

(Suspension bolt pitch)

B

(Ceiling hole size)

A

(Panel dimensions)

9

30

Ceiling ~ panel lap dimensions)

3) Suspension bolts installation

Locate the suspension bolts position by using the pattern sheet

(Use care of the piping direction when the unit is installed)

Hole-in anchor bolt

Hole-in plug

Insert

(e) Installation of indoor unit

1) Fix the indoor unit to the suspension bolts.

If required, it is possible to suspend the unit to the beam, etc.

Directly by use of the bolts without using the suspension bolts.

M10 nut

Concrete

Suspension bolt M 10

Suspension bolt

M10 washer

Indoor unit

M10 spring washer

Note (1) When the dimensions of indoor unit and ceiling holes does not match, it can be adjusted with the slot holes of mounting bracket.

857

FDC-HKX

2) Adjusting the unit’s levelness

1

Adjust the out-of levelness using a level vial or by following method.

Make adjustment so that the relation between the lower surface of the unit proper and water level in the hose becomes as given below.

Piping side

Supply water

Water level

0 ~ 5 mm

PVC hose

Bring the piping side slightly lower.

2 Unless the adjustment to the levelness is made properly, malfunctioning or failure of the float switch may occur.

3) Tap selection on blower unit

Taps of blower unit are set at the standard selection at the shipping from factory. Where the static pressure is raised by changing the connection of connectors provided at the flank of control box as shown below.

Standard tap (at shipping)

Red

Blue

Black

White

Connector, white

Red

Blue

Black

White

High speed tap

Red

Blue

Black

White

Connector, white

Blue

Black

Brown

White

(f) Installation of decorative panel

1) Case of silent panel a) Accessory b) Installation procedures

1

Remove the inner frame of panel

Name

Round head machine screw (M5 x 35)

Panel inner frame

Q'ty

4 pcs.

Position

Securing the panel

Panel outer frame

Remove

< How to remove the panel inner frame >

Detach from pins (A) in the order of arrow

1

.

Open slightly as the arrow

3

and move toward the arrow

4

and detach from pin (B)

Panel outer frame

Pin (B)

Pin (A)

1

2

Panel inner frame

4 3

858

FDC-HKX

2

Install the panel outer frame on the Indoor unit.

Indoor unit

Temporary setting

Panel outer frame

Panel inner frame

Procedures of installation

1

Secure the panel tentatively with 2 of 4 panel set screws (panel accessory) as shown above.

2

When the panel is supported with a pair of set screws, slide it in the arrow direction.

Note (1) Panel outer frame has the orientation.

3

Lock the former 2 and remaining 2 set screws.

4

Install the panel inner frame in the reverse order of removal.

2) Case of canvas panel

( Canvas duct (option) is necessary to install the canvas panel.)

a) Accessory

Symbol

1

2

3

Name

Round head machine screw (M4 x 16)

Round head machine screw (M5 x 16)

Round head machine screw (M5 x 25)

4

Holder

5

Chain

b) Mounting procedures

1

Install the canvas duct (option, 4 places) on the Indoor unit.

4

4

4

Q' ty

4

Position

Panel securing

8

Canvas duct securing

Chain securing

Indoor unit

Canvas duct

2 Round head screw

859

FDC-HKX

2

Remove the panel inner frame.

It can be removed same as the silent panel.

Panel inner frame

Panel outer frame

Remove

< How to remove the panel inner frame >

Pin (B) Pin (A)

Panel outer frame

1

Panel inner frame

4

3

2

Detach from pins (A) in the order of arrow

1

2

Open slightly as shown by the arrow 3 . move in the 4 arrow direction and detach from pin (B).

3

Install the chains on the panel outer frame. (4 places)

5

Chain

4

Install the panel outer frame.

Procedures of installation

Secure the holder tentatively as shown below. (4 places)

2 Round head screw

Indoor unit

Panel outer frame

Canvas duct

Holder

4 Holder

3

Round head screw

860

FDC-HKX

Hook the chain of panel outer panel on the holder.

Note (1) When hooking the chain. make sure to avoid slackness on it by pushing hard the panel outer frame against the ceiling material.

Ceiling material

Tighten 3 screw in the step 1 till the panel outer frame contacts closely with the ceiling material.

Secure the canvas duct and the panel outer frame with screws.

Canvas duct

1 Round head machine screw

Panel outer frame

5

Remove the panel inner frame and install in the reverse order of removal.

6

Cautions for duct installation work

Indoor unit

Convas duct

(Optional parts)

Ceiling surface

Supply air port

(to be purchased locally)

Heat insulation

Return air port panel

Silent panel

Supply air duct

(to be purchased locally)

Return air port panel

(Canvas panel)

Calculate the draft and external static pressure and select the length, shape and blowout.

Supply air duct

1-spot, 2-spot, 3-spot and 4-spot with 200 type duct are the standard specifications. Determine the number of spots based on following table.

FDR22 type FDR28, 45, 56 type FDR71, 90 type FDR112, 140 type

1-spot 2-spot 2 ~ 3-spot (1) 3 ~ 4-spot (1)

Notes (1) Shield the central supply air port for 2-spot.

(2) Shield the supply air port around the center for 3-spot.

Limit the difference in length between spots at less than 2:1.

Reduce the length of duct as much as possible.

Reduce the number of bends as much as possible. (Corner R should be as larger as possible.)

Bad example Bad example Good example

861

FDC-HKX

Use a band, etc. to connect the indoor unit and the supply air duct flange.

Conduct the duct installation work before finshing the ceiling.

(g) Connection of air inteke and exhaust ducts.

State seeing from top of unit

Exhaust

Port

Side fresh air intake port

Rear fresh air intake port

Fig.1

Fig.2

1) Duct connecting position a) Fresh air intake

Inlet can be selected from the side or rear faces depending on the working conditions.

Use the rear fresh air inlte when the simultaneous intake and exhaust is conducted. ( Side inlet cannot be used.)

b) Exhaust (Make sure to use also the air intake.)

Use the side exhaust port.

Attachment of ceiling material

Ceiling material can be attached to the panel innern frame.

(Plate thickness max. 15mm)

Ornament plate

Panel inner frame

Attachment procedures

1

Remove the stopper.

2

Remove the ornament plate and attach the ceiling material.

3 Hold down the ceiling material and return the stopper in position.

Note (1) If the ceiling material is attached, the ornament plate is not used.

Stopper

Ceiling material

862

FDC-HKX

(h) Drain piping

1) Drain piping should always be in a downhill grade (1/50-1/100) and avoid riding across an elevation or making traps.

Good piping

Improper piping

Suspension bolts

1.5 m ~ 2m

Avoid riding across an elevation

Air vent

Keep free from traps

Do not pipe under water

Heat insulation

A downhill grade of 1/100 or more

2) When connecting the drain pipe to the unit, pay suffcient attention not to apply excess force to the piping on the unit side.

Also, fix the piping at a point as possible to the unit.

3) For drain pipe, use hard PVC general purpose pipe VP-25 which can be purchased

Drain socket locally. When connecting, insert a PVC pipe end securely into the drain socket before tightening securely using the attached drain hose and clamp. Adhesive must not be used connection of the drain socket and drain hose (accessory).

Pipe cover (large)[insulation]

(accessory

Level difference part

Drain hose

Joint for VP-25

(local procurement)

Main unit

Drain socket

Pipe cover (small)[insulation]

(accessory)

Clamp

(accessory)

Drain hose

(accessory)

Adhesion

VP-25

(local procurement)

Pipe cover [insulation]

(local procurement)

4) When constructing drain piping for several units, position the common pipe about 100mm below the drain outlet of each unit as shown in the sketch below. Use VP-30 or thicker pipe for this purpose.

Secure the elevation as high as possible

(approx. 100 mm)

A downhill grade of 1/100 or more

5) Be sure to provide heat insulation to hard PVC pipes of indoor placement.

6) Do not ever provide an vent.

VP-30

7) The height of the drain head may be elevated up to a point 600mm from the bottom of unit and when an obstacle exists in the ceiling space, elevate the piping to avoid the obstacle using an elbow or corresponding gadget. When doing this, if the stretch for the needed height is too high, the back-flow quantity of drain at the time of interruption of the operation gets too much and it may cause overflow at the drain pan. Therefore, make the height of the drain pipe withing the distance given in the drawing below.

295 ~ 325

Drain hose

Right above

600 mm (local maximum height of drain head)

Joints for VP-25

8) Avoid positioning the drain piping outlet at a place where ganeration of odor may be stimulated. Do not lead the drain piping direct into a sewer from where sulfur gas may ganerate.

863

FDC-HKX

9) Drainage test

a) During trial operation, make sure that drainage is properly execued and check that leakage is not found at connections.

b) Be sure to carry out a drainage test when installing the system during a heating season.

c) When installing the system in a building under construction, carry out the drainage test before ceiling tiles are installed.

Insert a water filing hose by approx 50 mm and feed water.

(Be sure to insert the water filing hose in a downward direction.)

Remove the gromment.

Be sure to restro it to the original position after the test is over.

1

Supply approx 1000cc of water through the outlet of the unit using a feed water pump.

2 Make sure that drainage is proceeding properly at the see-through outlet of the unit.

*Also confirm the revolving sound of the condensate motor when checking the drainage.

3

Then remove the drain plug at lower section of the unit to drain water off. After making sure water is not left, restore the drain plug to the original position.

10) Drainage from the lower drain socket

Only if the drain pipe can be installed in a downhill grade (1/50-

The upper drain socket

1/100), the lower drain socket can be used for connecting to the drain pipe as illustrated.

(Piping connection)

A hard PVC general-purpose pipe

The lower drain socket

Heat insulator

Rubber plug

(Remove the rubber plug)

(Disconnect the connector for the drain motor)

As shown in the sketch to the right, disconnect the drain motor connector CnR (blue color coding).

Caution:

If the system is started with this connector connected as is, drain water is discharged out of the upper drain socket causing a heavy water lekage.

Disconnect Condensate motor connector

CnR (2P Blue)

864

FDC-HKX

(5) Satellite ducted type (FDUM)

(a) Selection of installation location

1) Avoid installation and use at those places listed below.

a) Places exposed to oil splashes or steam (e.g. kitchens and machine plants).

Installation and use at such places will incur deteriorations in the performance or corrosion with the heat exchanger or damage in molded synthetic resin parts.

b) Places where corrosive gas (such as sulfurous acid gas) or inflammable gas (thinner, gasoline, etc.) is gnerated or remains.

Installation and use at such places will cause corrosion in the heat exchanger and damage in molded synthetic resin parts.

c) Places adjacent to equipment generating electromagnetic waves or high-frequency waves such as in hospitals. Generated noise may cause malfunctioning of the controller.

2) Select places for installation satisfying the following conditions and, at the same time, obtain the consent on the part of your client user,.

a) Places where chilled or heated air circulates freely. When the installation height exceeds 3m, warmed air stays close to the ceiling. In such cases, suggest your client users to install air circulators.

b) Places where perfect drainage can be prepared and sufficient drainage gradient is available.

c) Places free from air disturbances to the return air port and supply hole of the indoor unit, places where the fire alarm may not malfunction to short circuit.

d) Places with the environmental dew-point temperature is lower than 28˚C and the relative humidity is less than 80%.

( When installing at a place under a high humidity environment, pay sufficient attention to prevention of dewing such as thermally insulating the unit properly.)

3) Check if the selected place for installation is rigid enough to stand the weight of thew unit.

Otherwise, apply reinforcement using boards and beams before starting the installation work.

620

Models

FDUM36, 45, 56 type

FDUM71, 90 type

FDUM112, 140 type

Mark

A

Unit : mm

1100

1300

1720

865

FDC-HKX

(b) Suspension

Be sure to observe the finished length of the suspension bolts given below.

A

Models

FDUM36, 45, 56 type

Mark

FDUM71, 90 type

FDUM112, 140 type

1) Fixing the suspension bolt (customer ordered parts M10)

Securely fix the suspension bolt as illustrated below or in another way.

Hole in anchor bolt

Hole-in plug Insert

A

Unit : mm

786

986

1406

M10 nuts

Indoor unit

Suspension bolt M10

Concrete

Suspension bolt

M10 Washer

Indoor unit

Suspension bolt M10

M10 Spring washer

2) Adjusting the unit’s levelness

a) Adjust the out-levelness using a level vial or by the following method.

Make adjustment so that the relation between the lower surface of the unit proper and water level in the hose becomes given below.

Piping side

Supply water

0 ~ 5 mm

PVC hose

Bring the piping side slightly lower b) Unless the levelness is adjusted properly, the malfunction of the float switch will occur.

3) Tap selection on blower unit.

Taps of on blower unit are set at the standard selection at the shipping from factory. Where the static pressure is raised by changeing the connection of connectors provided at the flank of control box as shown below.

Standard tap (at shipping)

Red

Blue

Black

White Connector, white Connector, white

Red

Blue

Black

White

High speed tap

Red

Blue

Black

White Connector, white Connector, red

Blue

Black

Brown

White

866

FDC-HKX

(c) Duct installation

1 Supply air duct

(to be purchased locally)

4 Return air duct

(to be purchased locally)

Heat insulation

Indoor unit

Supply air port

(to be purchased locally) 2

Access door

5

Return air port

with canvas duct

(to be purchased

locally)

3

Return air port

(to be purchased locally)

1

Supply air duct

Same as FDR series. Refer to page 861.

2

Access door

Access door must be provided without fail.

Dimensions of access door and service space

( See exterior dimensions in page 773 to 775.)

3

Return air port

An air filter is not included in the indoor unit. Use the return air port with air filter.

4

Return air duct: Use square duct.

5

Return air port with canvas duct

1) Connection of intake and exhaust ducts.

Looking from top of unit

Exhaust port

Side fresh air intake port

Fig.1

Fig.2

Intake duct

(square duct)

Fresh air intake port midway of return duct

2) Duct connecting position.

< Fresh air intake >

a) Use side air intake port.

b) In case of simultaneous intake and exhaust, the side air intake port cannot be used, therefore, take air from the midway air intake port along the intake duct.

< Exhaust >

Make sure to use suction as well.

c) Use a side exhaust port.

3) Duct connection

Use intake and exhaust duct flange of separately sold (for connection of 125mm round duct) to connect 125mm round duct.

The duct clamped by bands must be thermally insulated to prevent dew condensation.

867

FDC-HKX

(d) Drain piping

1) Drain piping should always be in a downhill grade (1/50-1/100) and avoid riding across an elevation or makeing traps.

Good piping

Suspension bolts

1.5 m ~ 2m

Improper piping

Avoid riding across an elevation

Air vent

Keep free from traps

Do not pipe under water

Heat insulation

A downhill grade of 1/100 or more

2) When connecting the drain pipe to the unit, pay suffcient attention not to apply excess force to the piping on the unit side.

Also, fix the piping at a point as close as possible to the unit.

3) For drain pipe, use hard PVC general purpose pipe VP-25 which can be purchased

Drain socket

Level difference part

Drain hose locally. When connecting, insert a PVC pipe end securely into the drain socket before tightening securely using the attached drain hose and clamp. Adhesive must not be used connection of the drain socket and drain hose ( accessory).

Pipe cover (large)[insulation]

(accessory)

Joint for VP-25

(local procurement)

Main unit

Drain socket

Pipe cover (small)[insulation]

(accessory)

Clamp

(accessory)

Drain hose

(accessory)

Adhesion

VP-25

(local procurement)

Pipe cover [insulation]

(local procurement)

4) When constructing drain piping for several units, position the common pipe about 100 mm below the drain outlet of each unit as shown in the sketch below. Use VP-30 or thicher pipe for this purpose.

Secure the elevation as high as possible

(approx. 100 mm)

A downhill grade of

1/100 or more

VP30

5) Be sure to provide heat insulation to hard PVC pipes of indoor placement.

6) Do not ever provide an air vent.

7) The height of the drain head may be elevated up to a point 600 mm from the bottom of unit and, when an obstacle exists in the ceiling space, elevate the piping to avoid the obstacle using an elbow or corresponding gadget. When doing this, if the stretch for the needed height is too high, the back-flow quantity of drain at the time of interruption of the operation gets too much and it may cause overflow at the drain pan. Therfore, make the height of the drain pipe withing the distance given in the drawing below.

295 ~ 325

Drain hose

Right above

868

Joints for VP-25

8) Avoid positioning the drain piping outlet at a place where generation of odor may stimulated. Do not lead the drain piping direct into a sewer from where sulfur gas may generate.

FDC-HKX

9) Drainage test

a) During trial operation, make sure that drainage is properly execued and check that leakage is not found at connections.

b) Be sure to carry out a drainage test when installing the system during a heating season.

c) When installing the system in a building under construction, carry out the drainage test before ceiling tiles are installed.

Insert a water filing hose by approx 50 mm and feed water.

(Be sure to insert the water filing hose in a downward direction.)

Remove the grommet.

Be sure to restro it to the original position after the test is over.

1

Supply approx 1000cc of water through the outlet of the unit using a feed water pump.

2

Make sure that drainage is proceeding properly at the see-through outlet of the unit.

* Also confirm the revolving sound of the condensate motor when checking the drainage.

3

Then remove the drain plug at lower section of the unit to drain water off. After making sure water is not left, restore the drain plug to the original position.

10) Drainage from the lower drain socket

The upper drain socket

Only if the drain pipe can be installed in a downhill grade (1/50-

1/100), the lower drain socket can be used for connecting to the drain pipe as illustrated.

(Piping connection)

The lower drain socket

A hard PVC general-purpose pipe

Heat insulator

Rubber plug

(Remove the rubber plug)

( Disconnect the connector for the drain motor)

As shown in the sketch to the right, disconnect the drain motor connector CnR ( blue color coding).

If the system is started with this connector connected as is, drain water is discharged out of the upper drain socket causing a heavy water lekage.

Disconnect Condensate motor connector

CnR (2P Blue)

869

FDC-HKX

(6) Ceiling Supension type (FDE)

(a) Selection of installation location

1) A place where good air circulation and delivery can be obtained.

Cold air throw

Models

Air throw

FDE36, 45, 56 type

7.5

FDE71 type

8

FDE112 type

9.5

Conditions

(1) Installation height: 2.4 ~ 3.0 m above the floor

(2) Fan speed: Hi

(3) Location: Free space without obstacles

(4) Distance of reach indicates the horizontal distance after the wind touched down the floor.

(5) Air velocity at the throw: 0.5 ( m/sec.)

Unit : m

FDE140 type

10

2)

3)

4)

5)

A place where ceiling has enough strength to support the unit.

A place where there is no obstruction to the return air inlet and supply air outlet ports.

Places exposed to oil splashes or steam (e.g. kitchens and machine plants).

Installation and use at such places will incur deteriorations in the performance or corrosion with the heat exchanger or damage in molded synthetic resin parts.

A place where the space shown below may be secured.

Ceiling mouting installation

Unit : mm

100 or more 150 or more

5 or more

Obstacle

6)

This unit uses a mincrocomputer as a control device. Therefore avoid installing the unit near the equipment that generates strong electromagnetic waves and noise.

(b) Installation preparation

1) Drilling of holes for interconnecting piping and wiring.

a) Drill a hole through the wall in accordance with the piping diameter. We recommend using a hole saw drill of 70 ~ 86 mm diameter and the hole should be drilled on an incline from inside to outside.

b) Insert the accessory piping sleeve into the hold and cut it to the proper length in accordance with wall thickness.

2) Installation of suspension bolts

a) Use the template sheet to determine the positions of suspension bolts and refrigerant pipings. The refrigerant piping can be routed either to the right, left, top or rear.

870

FDC-HKX b) Positions of suspension bolts are as in the drawing below.

When the suspension brackets face in

When the suspension brackets face out

Air outlet

A

Air outlet

A

Suspemsion bolt hole

Suspemsion bolt hole

50

31

Suspemsion bracket

B

D

50

31

8

31

Suspension bracket

C

D

Mark

A

Models

FDE36, 45, 56 type

1000

FDE71, 112 type

FDE140 type

1260

1470

c) In case of ferro-concrete buildings

Fix the suspension bolts in the following way.

B

900

1160

1370

C

984

1244

1454

8

31

D

Unit : mm

938

1198

1408

Insertion

150 ~ 160

Steel reinforcement rods

Concrete

M8 ~ M10 (3/8¨) suspension bolts

d) Length of suspension (in cace of exposed type installtion)

Ceiling board

Notes (1) In case the susprnsion bracket face in, and the supension bolts are made to the length as shown in the left drawing the bolts ends will be put in the plasitics cap of the indoor unit top panel.

(2) Don’t remove the plastics cap.

Suspension bolts

(c) Installation of indoor unit

1) Detach the inside panel and suspension bracket

2

1 about 10 mm

3

1

Remove a fixing bolt of the side panel.

2

Unhook four hooks (marked ) by sliding the side panel in front side about 10mm, and detach the side panel from the unit.

Position of the hooks

Front Rear

Slide for front side about 10 mm

871

FDC-HKX

2) In case of exposed installation to the ceiling ( with suspension brackets facing in) a) Fix the suspension brackets to suspension bolts

Ceiling boards

Suspension bolt [M8~M10 (3/8¨)]

Suspension bracket (accessory parts)

Flat washer (accessory parts)

Hexagonal nuts (accessory parts)

b) Hook the unit to suspension brackers

Suspension bracket

Suspension bracket fixing bolts

(let them protrude 8 ~ 12 mm from the unit) c) Fix unit securely in place by tightening the suspension bracket fixing bolts.

d) Attach the side panels and installation is finished.

Ceiling

3) In case the unit is half recessed into the ceiling ( the suspension brackets facing outside)

a) Open a hole in the ceiling large enough for the unit and necessary installation work. ( Fill up the excess opening after the installation work is finished.)

Opening

300 or more

618

Unit : mm

300 or more

10

10

872

Unit: mm

FDC-HKX

b) Installation space dimensions

(Plug in dimensions)

10

Unit upper side

10

Ceiling board c) Mount the unit using suspension bolts

Suspension bolts

Flat washer (accessory parts)

Hexagonal nuts (accessory parts) d) Securely tighten the nuts and fix the indoor unit place.

e) Attach the side panels and fit in ceilling board in the space around the unit and the work is finished.

Fit in ceiling boards here

4) Gradient for drainage

Mounting with proper gradient for drainage is needed as shown below.

In right and left directions

Front and rear directions

Note (1) In case of left-hand side drainage, the gradient will be to the opposite side.

Caution

In case of gradient is contrary, water may leak out.

Indoor side of drain pipe must be thermally insulated.

873

FDC-HKX

(7) Wall mounted type (FDK)

(a) Selection of installation location

1) Select the best position and direction depending on the shape of room and height of ceiling to ensure that the cooled or warmed air will be circulated sufficiently.

cooled air throw

Models

Item

FDK22 type

Unit : m

FDK28 type FDK36, 45 type FDK56, 71 type

Air throw

6 7 8

150 mm or more

200 mm or more

[Conditions]

a) Fan speed: Hi b) Location: Free space without obstacles c) Distance of reach indicates the horizontal distance after the wind touched down the floor.

2)

3)

4) d) Air yelocity at the throw:0.5 (m/sec.)

Where there is no obstacle around the Air inlet port or Air outlet port.

Where a sufficient space can be reserved for the service of air filter and the attachment/removal of panels.

Places exposed to oil splashes or steam (e.g. kitchens and machine plants ).

5)

6)

7)

8)

Installation and use at such place will incur deteriorations in the performance or corrosion with the heat exchanger or damage in molded synthetic resin parts.

Where pipes and wires can be arranged conveniently.

On the solid floor

Where the unit is not exposed directly to sun light.

Place where corrosive gas ( such as sulfurous acid gas ) or inflammable gas ( thinner, gasoline, etc.) is generated or remains.

9)

Installation and use at such places will cause corrosion in the heat exchanger and damage in molded synthetic resin parts.

Where a complete draining can be assured.

10) Where a sufficient space can be reserved for service.

(b) Method to install the mounting plate

1) Indoor unit weighs about 20 kgs. Be sure to check closely the installation place and, if any risk is expected, provide a sufficient reinforcement with plates or beams. Indoor unit cannot be secured directly on the wall, etc.

Attached mounting plate must be used.

Wooden wall

Concrete wall

(Use marketed anchors (M6)

Example of nut anchor Example of bolt anchor

Wood screw

Mounting plate

Bolt

Mounting plate

Nut

Mounting plate

10 mm or over

2) When installing a mounting plate on the wall, adjust it at level precisely and fix securely. Use the marketed anchor bolts (M6) when the wall is made of concrete.

Set this face at level

Secure as tightly as a wight of 90 kgs can be supported.

Mounting plate

Nuts,screws

874

(c) Installation

1) Use an attached pattern sheet and mark the position of screws to attach the mounting plate.

FDC-HKX

2) Determine the direction to lead the pipe and bore a through hole on the wall aligning with the pipe hole of unit.

Indoor

Wall

Outdoor

Sealing plate

Wall

Sleeve

ø 70 mm

Sleeve

Cut the sleeve for the thickness of wall and insert in the hole.

3) Remove screws (2 pcs.) and remove the right and left panels from the Indoor unit. ( Remove screws first, move slightl to remove.)

2

1

Front

4) Remove the lower panel from the Indoor unit. It can be remove if 3 screws are loosened but not removed.

5) Secure the mounting plate with screws at a selected place on the wall. When the wall is made of concrete, use the marketed anchor bolts (M6)

875

FDC-HKX

6) Hook and install the indoor unit on the mounting plate from top. Hook slightly at left at first and return to right.

7) Fix the indoor unit on the mounting plate with a screw.

8) Install the lower panel at the original position.

9) Install the right and left side panels at their original position.

10) This is all for the installation.

876

FDC-HKX

(8) Floor standing exposed type (FDFL)

(a) Selection of installation location

1) A place where good air circulation and delivery can be obtained.

Cooled (warmed) air throw

Models

Air throw

All models

4

Unit : m

[Conditions]

2)

3)

4)

5)

6)

7)

8)

9)

(1) Fan speed: Hi

(2) Location: Free space without obstacles

(3) Distance of reach indicates the horizontal distance after the wind touched down the floor.

(4) Air velocity at the throw: 0.5 (m/sec.)

Where there is no obstacle around the Air inlet port or Air outlet port.

Where a sufficient space can be reserved for the service of air filter and the attachment/removal of panels.

Places exposed to oil splashes or steam (e.g. kitchens and machine plants).

Installation and use at such places will incur deteriorations in the performance or corrosion with the heat exchanger or damage in molded synthetic resin parts.

Where pipes and wires can be arranged conveniently.

On the solid floor

Where the unit is not exposed directly to sun light.

Places where corrosive gas (such as sulfurous acid gas) or inflammable gas ( thinner, gasoline, etc.) is generated or remains.

Installation and use at such place will cause corrosion in the heat exchanger and damage in molded synthtic resin parts.

Where a complete draining can be assured.

10) Where a sufficient space can be reserved for service.

Floor standing installation

Floor fixation

Wall fixation

Unit : mm

600 or more

600 or more

(b) Bolt positions

1) Bolt positions for metal settings used for floor fixation.

Metal fitting used for floor fixation (accessories).

unit : mm

10 30 Slotted holes

M8

Front side

Floor

2) Bolt positions for wall fixation

205

1196(1481)

786(1071)

195

Note (1) Value in ( ) indicates 71 type.

Rcar side

806(1091)

1196(1481)

View from the floor

195 unit : mm

205

4 12 24

M10

Slotted holes for wall mounting

Level adjusting screw

877

FDC-HKX

(c) Installation of unit

1) Floor standing installation

a) Position of mounting bracket fixing bolts Drill holes by referring to figures below.

Hole for piping

& wiring on floor

When fixed on the wall

4 places

Hole for piping & wiring on wall

Bolt for wall mounting

30

When fixed on the floor

2 places

Note (1) Be sure to use a bolt of the length for wall mouning.

Wall b) The methed of drilling the wall is as follows.

Wall

Indoor

Outdoor

Sealing plate

Wall

Sleeve

Ø70~86 mm

Sleeve c) Remove the front and side panels.

Case front panel

Top panel

Case side panel

Side panel

Case front panel

Case side panel

Case front panel

Frame d) Level the unit using the level adjusting screw. Installation will be complrted after attaching side and front panel.

e) Exceute fixation following the directions described below.

When fixed on the floor

When fixed on the wall

Frame side panel

Tighten the bolt for wall fixation using a flat washer and double nut.

Tighten the bolt for floor fixation using a flat washer and double nut.

Mounting platc

(Accessories)

878

FDC-HKX

(d) Drain piping

The drain piping can be directed to the floor or rear sides as follows.

(a) Connect a drain piping to the drain outlet and fix it by use of tigghening band.

(b) Indoor side drain piping must be thermally insulated.

(c) After finishing the drain piping, check the drainage by pouring some water in the drain pan.

Decrine

Up-and-down bend

Bad

Bad

Trap

(e) Installation of remote controller ( on the indoor unit )

Attached remote controller may be installed on the indoor unit as shown below. The work can be done on the spot when the customer asks so or by other reasons.

Refer to the page 779 when it is instralled on the wall.

1) Detach the front panel.

Unit: mm

A Wiring hole Ø16

VIEW A

2) Remote controller installation.

Attach the lower case with the screws (M4 128) accessory.

2-Ø3.0

(Holes of tapping screws)

3) Remote controller wiring.

a) Connect the terminals between the remote controller and the control box as per these wire color codes:[ (X) (red). (Y) (white),

(Z) (biack)], using the wires included in the kit.

b) The wires should have a surplus length of approximately 30 cm. (Necessary when servicing with the front panel detached.) c) Strip and solder as shown below when cutting the wire. (Omitting the soldering process may cause looseness of the wiring.)

10 ~ 15 mm 10 mm(Stripe and soldering.)

879

FDC-HKX

4) Wiring route.

a) Wire from the wiring hole through the rear side of the control box to the terminal block.

b) Any suplus wires should be tied up with a cable tie.

Remote controller installation section

Cable tip

Control box

Front Side

(8) Floor standing hidden type (FDFU)

(a) Selection of installation hidden location

1) A place where good air circulation and delivery can be obtained.

Cooled (warmed) air throw

Unit : m

Models

Air throw

All models

4

[Conditions]

2)

3)

4)

5)

6)

7)

8)

9)

(1) Fan speed: Hi

(2) Location: Free space without obstacles

(3) Distance of reach indicates the horizontal distance after the wind touched down the floor.

(4) Air velocity at the throw: 0.5 (m/sec.)

Where there is no obstacle around the Air inlet port or Air outlet port.

Where a sufficient space can be reserved for the service of air filter and the attachment/removal of panels.

Places exposed to oil splashes or steam (e.g. kitchens and machine plants).

Installation and use at such places will incur deteriorations in the performance or corrosion with the heat exchanger or damage in molded synthetic resin parts.

Where pipes and wires can be arranged conveniently.

On the solid floor

Where the unit is not exposed directly to sun light.

Places where corrosive gas (such as sulfurous acid gas) or inflammable gas ( thinner, gasoline, etc.) is generated or remains.

Installation and use at such place will cause corrosion in the heat exchanger and damage in molded synthtic resin parts.

Where a complete draining can be assured.

10) Where a sufficient space can be reserved for service.

Floor standing installation

Floor fixation

Wall fixation unit : mm

Peri cover

100 100

Peri cover

600

Floor

880

FDC-HKX

(b) Bolt positions

1) Bolt positions for metal settings used for floor fixation.

Metal fitting used for floor fixation (accessories).

unit : mm

Bolt positions for floor mounting hardware

Floor mounting hardware

Accessory

10 x 30 elongated hole

Use M8

Front

Back

806(1091)

As viewed from floor side.

Note (1) Value in ( ) indicates 71 type.

(c) Installation of unit

1) Floor standing installation

a) Position of mounting bracket fixing bolts

Drill holes by referring to figures below.

2) Bolt positions for wall fixation

112

1150(1435)

786 (1071)

Elongated hole for wall mounting

4 - 12 24

Use M10

179 unit : mm

Screw for adjusting levelness.

When fixed on the wall

4 places

Hole for piping & wiring on wall

Bolt for wall mounting

30 mm Wall

Hole for piping

& wiring on floor

When fixed on the floor

2 places

Note (1) Be sure to use a bolt of the length for wall mouning.

b) The methed of drilling the wall is as follows.

Wall

Indoor

Outdoor

Sealing plate

Wall

Sleeve

Ø70~86 mm

Sleeve c) Level the unit using the level adjusting screw. Installation will be complrted after attaching side and front panel.

d) Exceute fixation following the directions described below.

When fixed on the floor

Frame side panel

When fixed on the wall

Tighten the bolt for floor fixation using a flat washer and double nut.

Tighten the bolt for wall fixation using a flat washer and double nut.

Mounting platc

(Accessory)

881

FDC-HKX

(d) Drain piping

The drain piping can be directed to the floor or rear sides as follows.

(a) Connect a drain piping to the drain outlet and fix it by use of tigghening band.

(b) Indoor side drain piping must be thermally insulated.

(c) After finishing the drain piping, check the drainage by pouring some water in the drain pan.

Up-and-down bend

Bad

Bad

Trap

Decrine

19.5.2

(1)

Installation of the remote controller (Optional parts)

Selection of installation location

Following locations should be avoided:

(b) Remote controller cords can be taken out upward only as shown below.

Top

(a) Where exposed to direct sunlight

(b) Near the heat source

(c) Highly humid area or where splashed with water

(d) Uneven installation surface

(2) Selection of installation location

Exposed installation

(a) Remove the remote controller case.

Insert finger nails between the upper (white) and lower

(brown) cases and ply them to open.

(Cord take-out direction)

Cut the remote controller lower case off at the top and thin section with a nipper, knife or other and remove burrs from the cut with a file or other.

(c) Secure the remote controller lower case on the wall with 2 pieces of wood-screws.

Top

Upper case (white)

Lower case

Lower case (brown)

Bottom

(d) Connect the remote controller cords with the terminal block.

Make sure to align the terminal numbers on the indoor unit and the remote controller. Polarities are specified on the terminal block so that the unit will not be operated if the cords are connected improperly.

Terminals: (X) red wire, (Y) white wire, (Z) black wire

882

FDC-HKX

(e) Set necessary functions in accordance with the model of indoor unit.

Refer to (c) for the setting of functions.

(f ) Couple the upper case with the lower case as they were.

(g) Secure the remote controller cords on the wall or other using cord clamps.

Embedded installation

1) Have a JIS box and remote controller cords (use shielding wires or twisted pair wires for extension) embedded in the wall in advance.

(3) Setting the functions

indoor unit and purposes of use.

To indoor unit

Upper case

J6

Remote controller cords

JIS box

(Provided by customer)

Selector switch

(SW1 ~ SW4)

Adequate JIS box

JIS C 8336 Single switch box (without cover)

JIS C 8336 Medium size square outlet box and two-switch cover with paint margin

2) Remove the upper case from the remote controller.

3) Secure the remote controller body on the JIS box with 2 pieces of M4 round head screw (provided by customer).

4) Connect remote controller cords with the remote controller.

(Refer to the section regarding the exposed installation.)

5) Couple the upper case with the lower case as it was to finish up the installation.

M4 round head screw x 2 pieces

(Provided by customer)

Cautions for extension of remote controller cords

Make sure to use shielding wires only.

All models: 0.3 mm 2 x 3 core wires [MVVS3C, products of

Keihan Cables]

Note (1) When the extension distance exceeds 100 m, change the wire size as follows:

100 ~ 200 m ... 0.50 mm

~ 300 m ... 0.75 mm

~ 400 m ... 1.25 mm

2

2

2

3 core wires

3 core wires

3 core wires

~ 600 m ... 2.00 mm 2 3 core wires

Make sure to ground one side only of the shielding wire.

Jumper wire

(J1 ~ J4)

Heat sensor element

Functions of selector switches

Switch Function

SW1

C

H

ON

SW2

Model type - Cooling only

Model type - Heat pump model

Remote control sensor - Valid

SW3

OFF

ON

OFF

Remote control sensor - Invalid

Power failure compensation - Provided

Power failure compensation - Not provided

SW4

S

M

Remote controller selector - Slave

Remote controller selector - Master

Functions of jumper wires

J1

Name

With

None (1)

Function

Return air temperature display - Valid

Return air temperature display - Invalid

J2

J3

J4

With

None

(1)

Blow rate display - 3 speed

Blow rate display - 2 speed

With Timer function - Valid (Normal)

None

(1)

With

Timer function - Invalid

Auto swing display-With

None (1) Auto swing display - None

J6

With

None

(1)

For KX multi

For KXR multi

Note (1) “None” means it is not installed on the PCB or open.

883

FDC-HKX

19.5.3 Installation of outdoor unit

(1) Selection of installation location

(a) A place where air will not be stagnant.

(b) A place where the exhaust air will not be shortcycled.

(c) A place with enough space for air flow around the unit.

(d) A place where the unit will not be affected by other heat sources.

(e)

(when there are multiple units installed or when units have another heat source)

A void installing the unit in places that are subject to sea air, sulfureous gas of the type found in hot springs, or any other corrosive or flammable gas.

A place where smooth drainage of rain water and water formed by defrosting is acceptable.

(f)

(g)

In heating operation

, snow deposit on the heat-exchanger of outdoor unit must be prevented for keeping the normal performance capacity.

Snow-hood on outdoor unit as in drawing, will reduce the frequency of defrost operation.

When installing the snow hood, take care so that their outlet of the snow hood will not face directly into the most windy direction.

Design the base higher than possible snow deposit.

(h) A place where air outlet port is not exposed to strong wind.)

(2) Installation space

A place with enough space for air inlet, air outlet and service space.

(a) Independent installation

1) Standard oblique blow or up blow 2) Side blow

Wall height H3 Wall height H3

L2

Air inlet

L3

L4

(Service space)

L1

L2

Air inlet

(Service space)

L3

L4

L1

Wall height H1 Wall height H1

Dimensions

Installation example

L

1

L

2

L

3

L

4

H

1

H

2

H

3

H

4

I

Open

0

300

Open

-

Not limited

Not limited

-

II

Open

0

300

500

-

Not limited

Not limited

Not limited

(Unit : mm)

III

500

0

300

0

1000 or less

Not limited

700 or less

Not limited

Note (1) When the wall heights H1 and H3 exceed the limited value, keep dimensions for L1 and L3 as shown below.

L1 = H1 – 500 (In the case of side blow, H1 1,000 irrespective of L1 dimension)

L3 = 300 + (H3-700) / 2

However, there is no limitation in wall height H3 if L3 exceeds 600.

884

FDC-HKX

(b) In the case that there is a wall above the unit

No. of units that can be installed are limited up to 3 units.

(Example : 5HP

×

3 units, 10HP

×

1 units + 5HP

×

1 unit)

150 and over

(side blow)

500 and over

(oblique blow)

200 and under

(side blow)

600 and over

5 HP

(One-blower unit)

L1 or L2 0

L1 + L2 500

8 or 10HP

(Two-blower unit)

L1 or L2 350

L1 + L2 750

L1 L2

(c) Plural units installation (Single crosswise row installtion : No limitation in No. of units)

Wall height H3

L2

Air inlet

(Service space)

Wall height H1

L3

L1

L3

L1 500

L2 0

L3 300

L4 0

H1 1,000

H2 No limitation

H3 700

H4 No limitation

Note (1) When the wall heights H1 and H3 exceed the limited value, keep dimensions for L1 and L3 as shown below.

L1 = H1 – 500(In the case of side blow, H1 1,000 irrespective of L1 dimension)

L3 = 300 + (H3–700) / 2

However, there is no limitation in wall height H3 if L3 exceeds 600.

(d) Plural units installation (Plural installation in lengthwise and crosswise rows)

Notes (1) Side blow is not allowed.

(2) Secure dimensions L1 and H1 at the service space side. Secure dimensions L3 and H3 at the suction side.

Wall height H3

L3

L2 L4 L4

W1

L1 500

L2 1,000

L3 300

L4 1,000

W2

W3

H1 1,000

H2 No limitation

H3 700

H4 No limitation

L1

Wall height H1

885

FDC-HKX

(3) When the wall heights H1 and H3 exceed the limited value, keep dimensions for L1 and L3 as shown below.

L1 = H1 – 500

L3 = 300 + (H3–700) / 2

However, there is no limitation in wall height H3 if L3 exceeds 600.

Oblique blow

(standard)

Up blow

(option)

W1

1,500 and over

800 and over

W2

800 and over

800 and over

W3

1,500 and over

1,500 and over

W4

1,500 and over

1,500 and over

(4) The space of 1,500 mm per a series of 8 blower units is required for W4.

(Example : 5HP

×

8units in series installation, 10HP

×

4 units in series installation)

(5) When installing more than 3 rows with the oblique blow in lengthwise, change the blow direction of the group in the central row units,

excluding   the both end rows, to the up blow (option). This group blows to the wall and also opposes to the units at the rear in the suction face.

For the example shown below, the uppermost group in the second row falls under the above notes.

Change to the up blow type

1st row

(Oblique blow is allowed.)

2nd row 3rd row

(6) Install the rack that stores the piping, etc. so that it does not interfere with the airflow entering into the heat exchanger.

(3) In the case where the unit is exposed to strong wind.

Face the unit air outlet at a 90 ˚angle from the direction of the wind.

Wind direction

Wind direction

886

FDC-HKX

(c) Securing outdoor unit (in the case of exposure to severe weather conditions)

Fix the unit in the following way.

Use overturning prevention brackets.

Rig with wires.

Ring with wires

Fix the unit using achor bolts

(4)

(Use rigging wires that are resistant to corrosion and sufficient in strengh.

For example SUS304-W1, wire thickness 2.9 mm)

Installation

Fix the unit in a proper way according to the condition of a place where it is installed by referring to the following.

(a) Fix the unit to the foundation with anchor bolts.

FDC140 type FDC224, 280 type

unit : mm unit : mm

Position of anchor bolt

(M10 ~ 4 places)

[Service panel side]

Position of anchor bolt

(M10 4 places)

[Service panel side]

887

FDC-HKX

19.5.4 Refrigerant piping

(1) Precautions no refrigerant piping work for prevention against compressor lock

Compressor trouble including lock and motor burn-out is due to faulty parts but mainly concerned in installation and refrigerant piping conditions, The precautions for refrigerant piping are as belows.

(a) Be sure to perform brazing while flowing nitrogen.

888

1)

2)

Without flowing nitrogen gas, a lot of oxide film (CU

2

O) is generated. In particular, in case of for building with many brazed portions, oxide film is so much generated that this causes a fatal failure in the air conditioning system.

A foreign material (oxide film) causes clogging of the capillary tube or expansion valve, leading to non-cooling (nonheating), abnormal discharge temperature, compressor lock due to a faulty oil return. In some cases, a lot of foreign materials

(b)

1) block the oil return hole of the accumulator, thereby causing a compressor lock. (This lock trouble may occur repeatedly 2 or

3 times.)

Don’t admit water (waterdrops, condensation) into the piping.

Use a copper piping that is free from water (waterdrops, condensation).

2) Don’t perform refrigerant piping work while it rains.

3) To suspend outdoor piping work, perform curing to prevent water admission.

Bad effects of water

Capillary tube and expansion valve clogging

Refrigerant hydrolysis

“Acid” generation

Iron/copper corrosion

• Crystal foreign material (clathrate compound) generation resulting from reaction on refrigerating machine oil

There will be directly conected to serious trouble such as compressor lock or burnout of the compressor motor.

(c) Don’t admit dust or foreign particles in the pipe.

Various foreign particles are included in air conditioners that caused trouble. Be careful about them.

(Concrete fragments, cement, sand, paint, metal powder (copper refuse after deburring, etc.), etc.

(d) Adopt the specified dimensions for pipes.

Too thick: Improper charge volume

Faulty oil return (insufficient gas flow rate)

Compressor lock

(e)

1)

2)

Too long (L): Overcharge

Faulty oil return

Liquid back

Be sure to support the refrigerant piping with support fittings.

Compressor lock

The pipe vibrates and expands/shinks during operation. Without proper supports, a load is concentrated partially and cracks and collapse occur on the piping, thereby causing a unit failure.

A support should be provided at intervals of 2 or 3 m so as not to partially concentrate a load.

FDC-HKX

(2) Table for selection of piping size

Model

Item

Outdoor unit

Main piping

No. 1 branch

Gas line

φ

19.05

φ

19.05

φ

19.05

φ

15.88

Total indoor unit down-flow capacity after the sec-

Less than 101

101 to less than 180 ond branch.

180 or more

φ

19.05

FDC 140 type

Liquid line Branch used

φ

9.52

φ

9.52

φ

9.52

DIS-2KX20-E

φ

9.52

DIS-2KX10-E

DIS-2KX20-E

Gas line

φ

25.4

φ

25.4

φ

25.4

φ

15.88

φ

19.05

φ

25.4

FDC 224 type

Liquid line Branch used

φ

12.7

φ

12.7

φ

12.7

DIS-2KX30-E

φ

9.52

DIS-2KX10-E

φ

12.7

DIS-2KX20-E

DIS-2KX30-E

Gas line

φ

28.58

φ

28.58

φ

28.58

φ

15.88

φ

19.05

φ

25.4

FDC 280 type

Liquid line Branch used

φ

12.7

φ

12.7

φ

12.7

DIS-2KX30-E

φ

9.52

DIS-2KX10-E

DIS-2KX20-E

φ

12.7

DIS-2KX30-E

Notes (1) If adjustment is required between the branch connection and the unit port, always make the adjustment on the branch connection side.

(2) The selection of piping size and branch piping, total all the indoor unit down flow capacity for that piping and branch piping.

¡

Branch pipe set shapes

Model Item Mark Branch pipe Item Mark Reducer

7

ID

25.4

70

OD

19.05

1

519

8

ID

28.58

70

OD

25.4

2

370

3

424

4

370

Diameter is same as above dimensions

5

424

Diameter is same as above dimensions

6

370

Diameter is same as above dimensions

Notes (1)The gas side flow divider pipe is insulated.

(2)Cut piping in the center on site in the area it will be used.

889

FDC-HKX

Example of piping

Outdoor unit: FDCJ280HKXE2B

Indoor unit: Combination of 8 units

[Branch pipe set : DIS-2KX10-E

×

1 set, DIS-2KX20-EX

×

3 set, DIS-2KX30-E

×

3 set]

[Total capacity: 363 (36300W) ]

• Selecting piping size

FDCJ280

Outdoor unit

Branch piping 1

Branch piping 2

Branch piping 3

Branch piping 4

Branch piping 5

A

Branch piping 7

Indoor unit

a

56

B

G b

56 c

C

36 d

D

36 e

E

36 f

71

F g

Branch piping 6

36 h

36 f g d e h a b c

D

E

F

G

Item

A

B

C

Selection procedure

Same as the outdoor unit piping size

Total capacity of the connected indoor units 251

Total capacity of the connected indoor units 215

Piping size (in)

Gasline Liquid line

ø28.58

ø12.7

ø25.4

ø19.05

ø19.05

ø19.05

ø12.7

ø9.52

ø9.52

ø9.52

Total capacity of the connected indoor units 179

Total capacity of the connected indoor units 143

Total capacity of the connected indoor units 72

Total capacity of the connected indoor units 112

Indoor unit piping size (56).

Indoor unit piping size (56).

Indoor unit piping size (36).

Indoor unit piping size (36).

Indoor unit piping size (36).

Indoor unit piping size (71).

Indoor unit piping size (36).

Indoor unit piping size (36).

ø15.88

ø19.05

ø15.88

ø15.88

ø12.7

ø12.7

ø12.7

ø15.88

ø12.7

ø12.7

ø9.52

ø9.52

ø9.52

ø9.52

ø6.35

ø6.35

ø6.35

ø9.52

ø6.35

ø6.35

• Selection of branch piping size.

Item

Branch piping 1

Branch piping 2

Branch piping 3

Branch piping 4

Branch piping 5

Branch piping 6

Branch piping 7

Selection procedure

Total capacity of the connected indoor units 363

Total capacity of the connected indoor units 251

Total capacity of the connected indoor units 215

Total capacity of the connected indoor units 179

Total capacity of the connected indoor units 143

Total capacity of the connected indoor units 72

Total capacity of the connected indoor units 112

Branch piping set

DIS-2KX30-E

DIS-2KX30-E

DIS-2KX30-E

DIS-2KX20-E

DIS-2KX20-E

DIS-2KX10-E

DIS-2KX20-E

Notes (1) Make the selection based on the size of each piping for branch piping sets with different size connections.

(2) If diameter adjustment is need for branch connection and on the indoor unit side, always makes the adjustment at the branch connection.

Reference: The shape of the flow divider pipe and reducer is shown on the 889 page.

Pictogram

: Branch pipe

ID

Inner finish

: Reducer OD

Outer finish

Horizontally

Notes (1) Use the designated piping size for the piping between the outdoor unit and the first branch.

(2) Choose the appropriate sized reducer for piping between the branch pipe and the indoor unit.

The size of reducer should match the piping size of the indoor unit.

(3) Locate the branch pipe horizontally or vertically as illustrated to the right.

Floor

Good

Floor

No

Good

Vertically

No

Floor

890

FDC-HKX

(3) Specification of unit piping (Pipe diameter, Connecting method)

(a) Unit

1) Outdoor unit

Model

FDC140 type

FDC224 type

FDC280 type

Item

Pipe diameter

φ

19.05 ( 3 /

4

")

φ

25.4 (1 ")

φ

28.58 (1

1

/

8

")

Gas line

Connecting method

Flare

Brazing

Unit: mm(in)

Pipe diameter

φ

9.52 ( 3 /

8

")

φ

12.7 (

1

/

2

")

φ

12.7 (

1

/

2

")

Liquid line

Connecting method

Flare

Unit: mm(in)

2) Indoor unit

Model

22, 28 type

36 type

45 type

56,71,90 type

112,140 type

Item

Pipe diameter

φ

12.7 ( 1 /

2

")

φ

12.7 (

1

/

2

")

φ

12.7 ( 1 /

2

")

φ

15.88 ( 5 /

8

")

φ

19.05 (

3

/

4

")

Gas line

Connecting method

Flare

Pipe diameter

φ

6.35 ( 1 /

4

")

φ

6.35 (

1

/

4

")

φ

6.35 ( 1 /

4

")

φ

9.52 ( 3 /

8

")

φ

9.52 (

3

/

8

")

Liquid line

Connecting method

Flare

3) Connection piping specification: Outer diameter and wall thickness (mm)

For R22

Outer diameter (mm)

φ

6.35

φ

9.52

φ

12.7

φ

15.88

Wall thickness (mm) Outer diameter (mm) Wall thickness (mm)

0.8

0.8

1.0

φ

19.05

φ

25.4

φ

28.58

1.0

1.2

1.4

1.0

For R407C

Outer diameter (mm) Wall thickness (mm) Outer diameter (mm) Wall thickness (mm)

φ

6.35

φ

9.52

φ

12.7

φ

15.88

0.8

0.8

1.0

1.0

φ

φ

φ

19.05

25.4

28.58

1.2

1.4

1.4

4) Tightening torque

φ

6.35(1/4 ") Flare nut

φ

9.52(3/8 ") Flare nut

φ

12.7(1/2 ") Flare nut

φ

15.88(5/8 ") Flare nut

φ

19.05(3/4 ") Flare nut

16 ~ 20 N

• m (1.6 ~ 2.0 kg

• m)

40 ~ 50 N

• m (4 ~ 5 kg

• m)

40 ~ 50 N

• m (4 ~ 5 kg

• m)

90 ~ 120 N

• m (9 ~ 12 kg

• m)

100 ~ 140 N

• m (10 ~ 14 kg

• m)

891

FDC-HKX

(b) Refrigerant connection piping.

Connection to left direction

Electric wing

Refrigerant piping

Connection to rear direction

Electric wing

Refrigerant piping

Connection to right direction

Connection to front direction

Electric wing

Refrigerant piping

Connection to lower direction

(c) Connection to rear, right and front directions.

1) See page 781 to 782 for locations of connecting holes and service valves.

(4) Heat insulation

(i) There is a need to insulate both gas and liquid piping with heat insulation for protection against heat and condensation.

1) Always use heat insulation to prevent condensation on the gas piping from becoming drain water and causing leakage during cooling and to prevent people from being burned by the high temperature of the surface of the gas piping as discharge gas flows through it.

2) Use heat insulation (pipe cover) on the flare connection sections of the indoor unit.

(Insulate both the gas and liquid piping.)

3) Insulate both the gas and liquid piping. Apply the insulation so that is tight against the piping and free of gaps. Route the connecting wires with the insulation and wrap the entire bundle with exterior tape.

Wires for connecting indoor and outdoor units

Liquid piping

;;;

Exterior tape

Gas lines

(5) Air-tight test

Use insulation material with good resistance heat properties (120 ˚C or more).

(a) When conducting an air-tight test of local piping, connect the piping to the check joint of the evacuating pipe connected to the gas side service valve, and keep the service valve closed. The air-tight test pressure shall be 2.94MPa [R407C : 3.23MPa]

(b) To conduct the test, pressurize the check joint of evacuating pipe by nitrogen gas as shown below. The local piping including indoor units can be tested as for airtightness.

Gas side service valve

Check joint

Pressurizing

Outdoor unit

Indoor unit

Indoor unit

892

FDC-HKX

(6) Evacuating

Evacuating can be completed faster by evacuating both the check joint on the liquid side service valve and the check joint of the evacuating gas pipe (accessory) connected to the gas side operation valve at the same time. (Of course, evacuating is possible even through the liquid side check joint only.)

Outdoor unit

Open

Gauge manifold

Open

Gas side service valve

Close

Close

Liquid side service valve

Vacuum pump

Check joint

Indoor unit

Indoor unit Indoor unit

(7) Refrigerant charge amount

(a) Additional charge amount

Model

Item

Additional charge amount per 1 m of liquid pipe

φ

12.7

φ

9.52

φ

6.35

FDC140 type

FDC224 type

FDC280 type

0.12 kg/m 0.06 kg/m 0.03 kg/m

Factory charge amount at time of shipment

Outdoor unit

9.0 kg

12.0 kg

Indoor unit

Holding charged

Remarks

Additional refrigeramt

Charge is not required

Notes (1) When the refrigerant piping length exceeds the length that additional refrigerant charge is not required, charge additional refrigerant based on to

calculated amount of refrigerat per unit piping length.

(2) The unit is holding charge type that all of the refrigerant is charged in the outdoor unit and in the indoor unit only a small amount of refrigerant is filled for

prevention of the air entry.

Calculation of amount of refrigerant to be charged in local piping

The amount refrigerat additionally charged in local piping depends on connection pipe size but not on indoor unit type.

[Amount of refrigerant to be charged in the local piping = Actual length of liquid pipe Amount of refrigerant additionally charged per meter of liquid pipe]

[Example] Amount of refrigerant additionally charged = (1

1

0.12) + (1

2

0.06) + (1

3

0.03)

1

1

: Overall length (m) of

φ

12.7 liquid pipe

1

2

: Overall length (m) of

φ

9.52 liquid pipe

1

3

: Overall length (m) of

φ

6.35 liquid pipe

Following precautions must be observed when the model is adapted to R407C.

(1) Tools and related components should be changed when handling a different kind of refrigerant in order to prevent mixing of different oils. Gauge manifold and charge hose, particularly, should never be used after using them for R22.

(2) Charge cylinder should not be used. Otherwise, the refrigerant composition may change when charging R407C into the cylinder.

(3) Refrigerant should be charged in the liquid phase from the container. Charging the refrigerant in the gaseous phase could change the refrigerant composition substantially.

(4) Volume of refrigerant to be taken out in the liquid phase from the container should be up to 90% of necessary quantity (in weight percent) as a standard.

(5) Refrigerant should not be replenished even if a leakage is discovered because it could change the refrigerant composition substantially.

When a leakage is discovered, replace with new refrigerant in the specified volume. However, it could be replenished temporarily in case of an emergency.

893

FDC-HKX

19.5.5 Electric wiring

(1) Power supply wiring

(a) Outdoor unit power supply

Use separate power supplies for the outdoor and indoor unit respectively. (Standard specification)

The table below shows the power specification for outdoor unit only.

Model

Item

Power source

FDC140 type

FDC224 type

FDC280 type

3 phase

380/415V

50Hz

Power supply wire size

(mm

2

)

3.5

5.5

8.0

Wire length

(m)

38

46

47

Switch capacity

(A)

30

Circuit breaker

Reted current

(A)

25

Earth leakage breaker

(A)

30A 30mA

0.1 sec. or less

40

60

30

50

40A 100mA

0.1 sec. or less

60A 100mA

0.1 sec. or less

Grounding wire size

(mm

2

)

2.0

2.0

3.5

Notes (1) The above table shows the power specification of outdoor unit when separate powers are use for outdoor unit and indoor units.

(2) The wire thickness and distance indicated above are for when voltage drop is 2%.

(b) Indoor unit power supply

Indoor unit

Total power supply for indoor unit

Item

Power supply wire size

(mm

2

)

Wire length

(m)

Wire circuit breaker (A) Signal wire thickness (mm)

Rated current

Circuit breaker

(Use for both ground/overload and short-circuit production)

Outdoor

· Indoor

Indoor

· Outdoor

2

23 20 20A100mA 0.1 sec. or less

Less than 10A

10A or more, less than 15A

3.5

27 30 30A100mA 0.1 sec. or less

2 core x

0.75 · 2.0

2 core x

0.75 · 2.0

Notes (1) The wire length covers values when necessary indoor units are connected in series with the unit power supply wire as shown below. Also, the wire thickness and distance indicated above are for when voltage drop is 2%.

(2) These values are based on the conditions that indoor units are connected so that the total capacity becomes the mximum against each outdoor unit.

r

1

Earth leakage breaker

Circuit breaker r

2

Power supply wire r

2 r

4

894

FDC-HKX

(2) Precaution in electric wiring.

(a) Use separate power supplies for the outdoor and indoor units respectiveliy (Standard specification)

(b) Signal wiring (for indoor and outdoor units)

• Double-core cable with a diameter 0.75 to 2 mm

2

should be used for the signal wires.

Never make the indoor and outdoor connecting signal line use “co-axial cable” or “strand” with the power wiring for indoor and outdoor unit and other ower line.

(Never use a multiconductor wire together with power line. It may cause erroneous operation.)

• Do not connect high voltage wires 220/240 V or 380/415 V to signal wires. as these wires are DC 5V. Signal wires should be connected so that the terminal Nos. conform with each other for between outdoor and between indoor units. However, they will work properly if different polarities are connected.

(Connect (A) and (A), (B)and (B).)

Do not strand or run the remote control cord with power line, electric line, etc.

• The total length of the signal wires Should be 1000m or less.

Recommended signal wire list

Name

No.

1

2

3

4

Vinyl cabtire round cord

Vinyl cabtire round cable

Control vinyl insulated, vinyl sheathed cable

Shielding wire

Symbol

VCTF double-core 0.75 to 2 mm

2

VCT double-core 0.75 to 2 mm

2

CVV double-core 0.75 to 2 mm

2

MVVS double-core 0.75 to 2 mm

2

When No. 4 shielding wire is used, always ground the single wire side of the shielding wire . In addition, using the shielding wire is helpful to prevent the incorrect connection between 5V DC and 220/240V or 380/415V AC because the discrimination from the power supply wire is clear.

(3) Wiring system Diagram

Model FDC140type

Power source (outdoor unit side)

3phase 380/415V50Hz

Earth leakage breaker

Circuit Breaker

Outdoor unit

Earth

Signal wire (Between outdoor and indoor units)

Signal wire (Between indoor units)

Circuit breaker

Earth leakage breaker

Indoor unit remote

<I> <II> controller wire

Remote controller

<III>

Power source (indoor unit side)

1phase 220/240V50Hz

<IV> <V> <VI>

895

FDC-HKX

Models FDC224, 280type

Power source (outdoor unit side)

3phase 380/415V50Hz

Earth leakage breaker

Circuit Breaker

Outdoor unit

Earth

Signal wire (Between outdoor and indoor units)

Signal wire (Between indoor units)

Circuit breaker

Earth leakage breaker

Indoor unit remote

<I> controller wire

<II>

Remote controller

Power source (indoor unit side)

1phase 220/240V50Hz

<III>

Outdoor/Indoor units connection procedures

<IV>

Outdoor unit

<V> <VI> <VII> <VIII>

A B

Signal wire (Between outdoor and indoor units)

Signal wire (Between indoor units)

Indoor unit side power supply wire

Indoor unit

L

N

A B

X Y Z

L

N

A B

X Y Z

<I>

Remote controller wire

X Y Z

Remote controller

<II>

X Y Z

Remote controller

Signal wire

• Do not connect high voltage wire 380/415V to signal wires, as these wires are DC 5V. Signal wires should be connected so that the terminal Nos. conform with each other for between outdoor and between indoor units. However, they will work properly if different polarities are connected. (Connect (A) and (A), (B) and (B).)

896

FDC-HKX

(4) Indoor and outdoor signal wiring

(a) If only one Outdoor unit is used

Outdoor signal teminal block

A B

Double cores 0.75 ~ 2 mm

2

Total length of signal wires: 1000 m or less

A B A B

Indoor signal terminal block

Notes (1) The indoor and outdoor signal wiring are without polarity

A B

B

A

B

A

B

A

B

A

Either of the above wiring is correct.

(2) For connection to the terminal block, use as M3.5 (5/32) round eye-let terminal is shown below.

7 mm or less

(b) If plural outdoor units are used

1) A maximum of 48 indoor units can be connected by using the crossover wiring method, with 2 wires for

each side of the outdoor and indoor units.

Outdoor unit

A B

Outdoor unit

A B

Outdoor unit

A B

Outdoor unit

A B

Double cores 0.75 ~ 2 mm

2

Total length of signal wires: 1000 m or less

A B

Indoor unit

A B

Indoor unit

A B

Indoor unit

A B

Indoor unit

2) Indoor/outdoor wiring method for multiple floors.

Outdoor unit

Outdoor unit

Outdoor unit

Outdoor unit

Double cores 0.75 ~ 2 mm

2

Total length of signal wires: 1000 m or less

Indoor unit

Indoor unit

Indoor unit

Indoor unit

Indoor unit

Indoor unit

3) Loop wiring is prohibited

Outdoor unit

Outdoor unit

Outdoor unit

(No)

Outdoor unit

Indoor unit

Indoor unit

Indoor unit

Indoor unit

Loop wiring of signal wires is prohibited

Wiring at the Portion indicated by a dotted line is prohibited.

897

FDC-HKX

(5) Remote controller wiring

(a) Wiring for controlling only one indoor unit.

X Y Z

Red White Black

Indoor unit terminal blocks

X Y Z

Red White Black

Remote controller terminal blocks

Note (1) Cables for the remote controller have polarity. Be sure to connect terminal blocks with the same numbers. If mis wiring occurs, E1 is displayed and disables the unit from operating.

(b) When controlling plural units.

1) Use the same procedure shown in the drawing above for the wiring of the power supply, both indoor and outdoor units and remote controller

When the wiring length for the remote controller exceeds 100 m, use the wiring procedure shown in the drawing below.

2) Connect each of the indoor units for group controlling (3 cables) a) Connect the cables to the terminal blocks of X, Y, and Z for the indoor unit remote controller. Since the cables have b) c) polarity, be sure to connect them to terminal blocks with the same numbers.

Use cables of more than 0.5 mm2 (Flexible and easily moved)

The total length of cables for crossover connection and the remote controller should be less than 600 m.

Note (1) Refer to the wire size chart on page 851 for any wiring exceeding 100 meters.

3)

4)

When there is more than one outdoor unit, they can be controlled by one remote controller.

One remote controller is capable of controlling up to 16 units in group.

Note (1) Use shielded cables, when wiring in parallel with cables for other power supply or when there is a possibility of being affected by outer noise such as noise from a high-frequency unit.

Outdoor unit

Unit address

No.01

A B

Outdoor unit

Unit address

No.02

A B

Indoor unit

(Outdoor unit address No.01)

(Indoor unit address No.00)

A B

Indoor unit

(Outdoor unit address No.02)

(Indoor unit address No.04)

A B

Indoor unit

(Outdoor unit address No.01)

(Indoor unit address No.02)

A B

Indoor unit

(Outdoor unit address No.02)

(Indoor unit address No.05)

A B

Indoor unit

(Outdoor unit address No.01)

(Indoor unit address No.03)

A B

Indoor unit

(Outdoor unit address No.02)

(Indoor unit address No.006

A B

Remote controller

(c) Settings for main and secondary units when multiple remote controllers are used.

Up to two remote controllers can be used for each indoor unit (or each group of indoor units).

1) There are two methods for arranging this. One

Indoor unit

X Y Z

Remote control signal wire (has polarity)

Match X Y and Z and connect.

method is to take a remote control connection wire

(3-strand) from the indoor unit for the secondary

2) remote control. The other method is to use a jumper wire from the main remote control.

Set the remote control switch for the secondary unit (SW4) to

X Y Z X Y Z secondary unit. (It was set to main unit a the factory.)

Note (1) The remote controller sensor setting is only enabled on the main remote controller.

Be sure to position the main remote controller in a location where it can detect the room temperature.

Remote control

SW4

Main

Remote control

SW4

Secondary

898

FDC-HKX

(6) Setting of unit address

Addresses can be set either with the automatic address setting, remote control address setting or manual address setting depending on the combinations of address switches (see table) of the indoor and outdoor units. Operate the address switches before turning power on.

Indoor unit

Address setting method

Auto address

Remote control address

Manual address

Outdoor unit

Outdoor No.

49

00 ~ 47

00 ~ 47

Outdoor No.

49

49

00 ~ 47

Indoor No.

49

49

00 ~ 47 units are set at 49 and the setting method is set for the automatic addressing.

Address No. setting

Set the setting SW1 - 4 on the indoor PCB and the setting SW1 and 2 on the outdoor PCB as listed below.

On indoor PCB

On outdoor PCB

SW1, 2 (blue)

SW3, 4 (green)

SW1, 2 (green)

For setting of indoor No. (orders of 10 and 1)

For setting of outdoor No. (orders of 10 and 1)

For setting of outdoor No. (orders of 10 and 1)

SW1(SW3)

0 1

2

4

Order of 10

8

7

6

9

SW2(SW4)

0 1

2

5

4

Insert the tip of flat head

(precision) screwdriver here and point the arrow at a desired No.

SW2 (SW4) Order of 1

SW1

(SW3) order of 10

0

1

2

0

00

10

20

1

01

11

21

2

02

12

22

3

03

13

23

4

04

14

24

5

05

15

25

6

06

16

26

3

4

30

40

31

41

32

42

33

43

34

44

35

45

36

46

37

47

Use 48 and 49 for setting the auto or remote control address.

7

07

17

27

8 9

08 09

18 19

28 29

38 39

48 49

Order of 1

Notes (1) Outdoor No. is provided on the outdoor and indoor PCB's and indicates which outdoor unit is connected with which indoor unit via a refrigerant pipe. Indoor and outdoor units connected with a refrigerant pipe must have the same No.

(2) Indoor No. is used to identify a particular indoor unit. The No. should never be duplicated.

(a) Auto address setting

This setting is used when wiring on the basis of outdoor unit.

Outdoor unit

No. 49

A B

A B

Indoor unit

A B

Indoor unit

A B

Indoor unit

A B

Indoor unit

Remote controller Remote controller Remote controller

Wires cannot be connected across

different refrigerant lines.

899

FDC-HKX

1) Set the address switch of outdoor unit at 49. (This is set at 49 at shipment from factory.)

2) Set the address switch of indoor unit at 49. (This is set at 49 at shipment from factory)

4)

5)

3) Turn power on for the indoor and outdoor units. Addresses are set automatically. (No. in a range of 0 - 7 is set for J140H or No. in a range of 0 - 11 for J224 and 280H.)

For the auto address setting, power must be ON for both the indoor and outdoor units. If power is supplied to the indoor unit only, "Outdoor No." is indicated on the remote controller. In such occasion, turn power ON also for the outdoor unit.

No. will be set within approx. 1 minute after turning power on.

If you press the inspection switch of the remote controller after setting the No., the address of indoor unit will be displayed.

The outdoor unit No. 49 will also be displayed.

6) Auto address setting is allowed also when controlling plural number of units with single remote controller. However, the connection cannot be made across different refrigeration lines.

Information 1) Once addresses are set, they are retained on the microcomputer even after turning power off.

2) Even if the wiring is arranged on the basis of outdoor units, (2) remote control address setting and (3) manual

address setting can be used.

Erasing of addresses set with the automatic address setting

On the remote controller, press the "Fan speed" switch while holding down both the switches "Check" and "Timer".

Memory of address is erased. If the power supply to the indoor and outdoor units is turned off later, the system returns to the state of no address setting. Then one of the three address setting methods can be selected by changing combinations of the address switches.

(b) Setting of remote control addresses

This setting is used when connecting a plural number of indoor and outdoor units with the super link. This is applicable when using single remote controller.

Figures in ( ) indicate address No. by the remote control ine "- - -" shows the refrigerant piping.

Address No. by the

remote control

Outdoor unit

No.00

A B

Outdoor unit

No.01

A B

Indoor unit

(Outdoor No. 00)

(Indoor No. 00)

A B

Remote controller

Indoor unit

(Outdoor No. 01)

(Indoor No. 03)

A B

Remote controller

Indoor unit

(Outdoor No. 00)

(Indoor No. 01)

A B

Remote controller

Indoor unit

(Outdoor No. 00)

(Indoor No. 02)

A B

Remote controller

Indoor unit

(Outdoor No. 01)

(Indoor No. 04)

A B

Remote controller

Indoor unit

(Outdoor No. 01)

(Indoor No. 05)

A B

Remote controller

1)

2)

3)

4)

Set the address of outdoor unit with a number in a range of 0 - 47 avoiding duplication with any other outdoor unit.

Leave intact the address switch on the indoor unit PCB at 49 as set at the shipment from factory.

Turn power on. Then you can proceed the remote control address setting.

Set the outdoor No. corresponding to each indoor unit, using the remote controller. Set next the indoor No. of indoor unit

in a range or 0 - 47 avoiding duplication with any other unit connected in the group.

900

FDC-HKX

Detail of setting from the remote controller

1) If the power switch is turned on, the outdoor No. on the display flashes, and "--" on the return air temperature display section and "U--" on the time display section are lit.

2)

3)

4)

5)

If power is not supplied to the outdoor unit, the outdoor No. only lights and you cannot set the address. In such occasion, to turn power on also for the outdoor unit.

Indoor No. increases 0, 1, 2, ... and up at each push on the room temperature setting

switch. Press the room temperature setting

to reduce the outdoor No. 0, 47, 46, 45 ... and down. Stop to press the switches when a desired No. is indicated.

Press the Set switch so that the outdoor unit display changes from flashing to firm lighting and the outdoor No. is set.

Simultaneously, "U" indicating the indoor unit No. starts to flash.

Set the indoor No. in the same way with the room temperature setting switches

and

.

After completing the setting, press the Set switch so that the "U" display changes from flashing to firm lighting and the

6) figures of outdoor No. and indoor No. on display start to flash.

Confirming the outdoor No. and indoor No. being correct, press the Set switch again.

If you like to change these Nos., press the "Check" switch so that it returns to the state of the step 2) and you can resume the address setting.

7) This is all for the address setting. The address display will go off 5 seconds later.

Note (1) Once the addresses are set, they are retained on the microcomputer even after turning power off. If you need to change the address, proceed as follows.

Change of address

Hold down the "Check" switch on the remote controller for more than 5 seconds. Outdoor No. on display flashes and you can set new addresses. Set the outdoor and indoor address Nos. same as described above. New addresses can be set.

Erasing the addresses set by the remote control address setting

Holding down both the switches "Check" and "Timer", press the "Fan speed" switch. Addresses in the memory are erased.

Turn power off on the indoor and outdoor units so that it returns to the no address setting condition and you can set the addresses with one of the three methods of address setting by changing combinations of the address switches.

(c) Manual address setting

This setting is used when connecting plural number of outdoor and indoor units with the super link, and is applicable when controlling with more than one remote controller. (You can use only one remote controller of course.)

Turn power off before operating the address switches. Change of address is disabled when power is supplied.

Line "- - -" indicates the refrigerant piping. Figure in the figure indicates the address number determined with the address switch.

Outdoor unit

No.01

A B

Outdoor unit

No.02

A B

Address No.

by address switch

Indoor unit

(Outdoor No. 01)

(Indoor No. 00)

A B

Indoor unit

(Outdoor No. 02)

(Indoor No. 04)

A B

Indoor unit

(Outdoor No. 01)

(Indoor No. 02)

A B

Indoor unit

(Outdoor No. 02)

(Indoor No. 05)

A B

Indoor unit

(Outdoor No. 01)

(Indoor No. 03)

A B

Remote controller

Indoor unit

(Outdoor No. 02)

(Indoor No. 06)

A B

Remote controller

901

FDC-HKX

1)

2)

3)

Using the address switch (green) on the outdoor unit PCB, set the address of the outdoor unit in a range of 00 - 47 avoiding duplication with any other outdoor unit.

Using the address switch (green) on the indoor unit PCB, set the outdoor No. at the same No. as the outdoor unit which is connected with a refrigerant pipe.

Using the address switch (blue), set the indoor No. of indoor unit in a range of 00 - 47 avoiding duplication with any other unit on the connection.

(7) Change of control

Details of control for outdoor units are selectable with the methods as listed below.

Selecting method of control

PCB (SW-3) No. 2 ON

PCB (SW-3) No. 3 ON

PCB (SW-3) No. 4 ON

PCB (SW-3) No. 5 ON

PCB (SW-3) No. 6 ON

PCB (SW-3) No. 7 ON

PCB (J1) OFF

PCB (J5) OFF

PCB (J6) OFF

Detail of selected control

Backup operation with inverter compressor only

Cancel of compressor dilution protection control

Mismatch check of indoor-outdoor connection

(Only when No. 5 and No. 6 of SW-3 are ON.)

Test run from outdoor unit

Cooling or heating selection at test run from outdoor unit

Forced cooling/heating mode

(Allows to fixe at cooling or heating by a signal from CnG.)

Selection of external input (CnS1)

Pulse input with the level input at-shipment-from-factory off

Defrosting off (makes easier to start defrosting)

Countermeasure for snow

(Turns the outdoor fan ON for 10 sec. at every 10-min. at outdoor

temperature 3˚C or under.)

902

FDC-HKX

19.5.6 Test run

(1) Before starting operation

(a) Measure resistances between the electrical parts terminal blook and ground grounded area using a 500V Megger, insulator.

Resistance must be higher than 1M

.

(b) Confirm whether the power source breaker (main switch) of the unit has been turned on for over 12 hours to energize the crankcase heater in advance of operation.

(c) Make sure that the compressor bottom has been warmed.

(d) Be sure to fully open the service valves (on both the gas and liquid sides) of the outdoor unit. if being operated without opening, the valve may be got out of order.

Note (1) When the service valve is closed, be sure to check that evacuation is completed or a refrigerant is charged.

(2) Test run

(a) If it is impossible, a test run of indoor units can be conducted by using the switches No.5 and No.6 of [SW-3] on the outdoor unit circuit board irrespective of ON/OFF conditions of CnS and the remote controller.

No.5 of [SW3]

Test run (ON)

Normal (OFF)

All connected indoor units operate when the switch is set to ON.

Indoor units request the maximum frequency and the outdoor unit operates with the maximum frequency shown in the table below according to requents from indoor units.

Select cooling or heating according to input to

No.6 of [SW3].

When the switch is set to OFF, these units can be operated with the remote controller or by external input.

No.6 of [SW3]

When No.5 of [SW3] is ON when No.6 of [SW3] is set to ON, a cooling operation starts.

When No.5 of [SW3] is on when No.6 of [SW3] is set to OFF, a heating operation starts.

[Remark]

This operation has priority over other option commands with the center console.

At the time of trial operation, the maximum frequencies are follows. Protective devices are effectively controlled, and frequencies are controlled to become smaller.

(3) Cooling test run operation (Cooling test run can be performed in winter.)

(a) Operating method

In the normal cooling mode, while holding down the

Temperature set” switch, press the “Set” switch.

Setting temperature is changed at 5˚C and the cooling test run is operated for 30 minutes.

It stops after 30 minutes.

(b) During cooling test run operation

If ON/OFF switch is pressed or a mode other than the cooling is selected by the “Mode” switch, the cooling test run operation is released or returns to the specified operation mode.

If the “Temperature set

switch is pressed, the setting temperature changed at 18˚C and the cooling test run operation is released but the cooling operation continues.

It is effective when any switches other than the above are pressed.

(c) During the cooling test run operation, the setting temperature changes at 5˚C but any other control and protective functions are operable just like in the normal operation.

If any error occurs, the location of error is indicated on the remote controller display or with the condition of flashing of inspection lamp (red) on the main unit controller. Remove the cause of trouble before starting operation again.

(4) Delivery

(a) Explain how to operate the indoor unit to your customer according to the accessory owner’s manual.

(b) Persuade the customer not to turn off the power switch even if the unit is not used for along time. The air conditioner can start operation any time when your customer want to heating or cooling his room. (The bottom of the compressor is heated with the crank case heater, and compressor troubles can be prevented when the cooling or heating season sets in.)

903

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