General ARH24L, ARH24LUAN, ARH30L, ARH30LUAN, ARH36L Installation Manual

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Refrigerant

②

R410A

Duct Type

SPLIT TYPE AIR CONDITIONER

INSTALLATION INSTRUCTION SHEET

(PART NO. 9374318063)

Indoor unit is an appliance not accessible to the general public.

For authorized service personnel only.

WARNING

CAUTION

This air conditioner uses new refrigerant HFC (R410A).

The basic installation work procedures are the same as conventional refrigerant models. However, pay careful attention to the following points:

Since the working pressure is 1.6 times higher than that of conventional refrigerant models, some of the piping and installation and service tools are special. (See the table below.) Especially, when replacing a conventional refrigerant model with a new refrigerant R410A model, always replace the conventional piping and flare nuts with the R410A piping and flare nuts.

Models that use refrigerant R410A have a different charging port thread diameter to prevent erroneous charging with conventional refrigerant and for safety. Therefore, check beforehand. [The charging port thread diameter for R410A is 1/2 UNF 20 threads per inch.]

Be more careful that foreign matter (oil, water, etc.) does not enter the piping than with conventional refrigerant models. Also, when storing the piping, securely seal the openings by pinching, taping, etc.

When charging the refrigerant, take into account the slight change in the composition of the gas and liquid phases, and always charge from the liquid phase side whose composition is stable.

When moving, if the compressor stops during pump down, close the valve immediately.

Special tools for R410A

Tool name

Gauge manifold

Charge hose

Vacuum pump

Gas leakage detector

Copper pipes

It is necessary to use seamless copper pipes and it is desirable that the amount of residual oil is less than 40 mg/10m. Do not use copper pipes having a collapsed, deformed or discolored portion (especially on the interior surface). Otherwise, the expansion valve or capillary tube may become blocked with contaminants. As an air conditioner using R410A incurs pressure higher than when using conventional refrigerant, it is necessary to choose adequate materials. Thicknesses of copper pipes used with R410A are as shown in Table. Never use copper pipes thinner than that in the table even when it is available on the market.

This mark indicates procedures which, if improperly performed, might lead to the death or serious injury of the user.

This mark indicates procedures which, if improperly performed, might possibly result in personal harm to the user, or damage to property.

Contents of change

Pressure is high and cannot be measured with a conventional gauge. To prevent erroneous mixing of other refrigerants, the diameter of each port has been changed. It is recommended the gauge with seals –0.1 to 5.3 MPa (–76 cmHg to 53 kgf/cm2) for high pressure. –0.1 to 3.8 MPa (–76 cmHg to 38 kgf/cm2) for low pressure.

To increase pressure resistance, the hose material and base size were changed.

A conventional vacuum pump can be used by installing a vacuum pump adapter.

Special gas leakage detector for HFC refrigerant R410A.

Thicknesses of Annealed Copper Pipes

Pipe outside diameter

9.52 mm (3/8 in)

15.88 mm (5/8 in)

Thickness

0.80 mm

1.00 mm

For authorized service personnel only.

WARNING

For the air conditioner to operate satisfactorily, install it as outlined in this installation instruction sheet.

Connect the indoor unit and outdoor unit with the air conditioner piping and cords available standards parts. This installation instruction sheet describes the correct connections using the installation set available from our standard parts.

Installation work must be performed in accordance with national wiring standards by authorized personnel only.

If refrigerant leaks while work is being carried out, ventilate the area. If the refrigerant comes in contact with a flame, it produces a toxic gas.

Do not use an extension cord.

Do not turn on the power until all installation work is complete.

CAUTION

This installation instruction sheet describes how to install the indoor unit only. To install the outdoor unit, refer to the installation instruction sheet included with the outdoor unit.

•Be careful not to scratch the air conditioner when handling it.

• After installation, explain correct operation to the customer, using the operating manual.

• Let the customer keep this installation instruction sheet because it is used when the air conditioner is serviced or moved.

SELECTING THE MOUNTING POSITION

WARNING

Install at a place that can withstand the weight of the indoor and outdoor units and install positively so that the units will not topple or fall.

CAUTION

Do not install where there is the danger of combustible gas leakage.

Do not install the unit near heat source of heat, steam, or flammable gas.

If children under 10 years old may approach the unit, take preventive measures so that they cannot reach the unit.

Decide the mounting position with the customer as follows:

INDOOR UNIT

(1) Install the indoor unit on a place having a sufficient strength so that it withstand against

the weight of the indoor unit.

(2) The inlet and outlet ports should not be obstructed; the air should be able to blow all

over the room. (3) Leave the space required to service the air conditioner. (4) Install the unit where the drain pipe can be easily installed. (5) Providing as much space as possible between the indoor unit and the ceiling will

make work much easier. (6) If installing in a place where its humidity exceeds 80%, use heat insulation to prevent

condensation.

Maintenance hole dimension

It shall be possible to install and remove the control box. It shall be possible to install and remove the control box, fan

units and filter.

300 mm

500 mm

Maintenance hole

Control box

100 mm

500 mm

300 mm

500 mm

Control box

300 mm or more

Maintenance hole

1550 mm

150 mm or more

Intake panel

100 mm

INSTALLATION PROCEDURE

Install the air conditioner as follows:

INDOOR UNIT

INSTALLATION

RECOMMENDED RANGE OF

EXTERNAL STATIC PRESSURE

30Pa to 150Pa

WARNING

Install the air conditioner in a location which can withstand a load of at least five times the weight

of the main unit and which will not amplify sound or vibration. If the installation location is not strong enough, the indoor unit may fall and cause injuries.

If the job is done with the panel frame only, there is a risk that the unit will come loose. Please take care.

CAUTION

For installation, refer to the technical data.

1. INSTALLING THE HANGERS

WARNING

When fastening the hangers, make the bolt positions uniform.

Hanging bolt installation diagram.

(Example)

(Top side)

AIR

(Left side)

The distance of is adjustable according to the place of the hanging bolts. (MAX : 550 mm, MIN : 410 mm)

740 mm

477 mm

AIR

270 mm

1135

1177

Slide the unit in the arrow direction and fasten it.

Hanging bolt M10 (Obtained locally)

Bolt Strength 9.81 to 14.71 N·m (100 to 150 kgf·cm)

Special nut A

Washer (Obtained locally)

Special nut B

Hanger

WARNING

Fasten the unit securely with special nuts A and B.

2. LEVELING

Base vertical direction leveling on the unit (right and left).

(Left side)

AIR

Base horizontal direction leveling on top of the unit.

0-5 mm

Give a slight tilt to the side to which the drain hose is connected. The tilt should be in the range of 0 mm to 5 mm.

Level meter

AIR

Drain hose

3. INSTALLING DRAIN HOSE

Install the drain hose according to the measurements given in the following figure.

(Left side)

(Right side)

32 mm

Liquid pipe

240 mm

Drain pipe ø 38 mm (O.D.)

240 mm

Gas pipe

Drain pipe ø 38 mm (O.D.) The drain cap is attached at the factory setting.

32 mm

66 mm

114 mm

CAUTION

Install the drain hose in accordance with the instructions in this installation instruction sheet and keep the area warm enough to prevent condensation. Problems with the piping may lead to water leaks.

NOTE: INSTALL THE DRAIN HOSE

• Install the drain hose with downward gradient (1/50 to 1/100) and so there are no rises or traps in the hose.

• Use general hard polyvinyl chloride pipe (VP25) [outside diameter 38mm] and connect it with adhesive (polyvinyl chloride) so that there is no leakage.

• When the hose is long, install supporters.

• Do not perform air bleeding.

• Always heat insulate the indoor side of the drain hose.

Outlet air flow

Arrange the drain hose lower than this portion

• When the unit is shipped from the factory, the drain port is on the left side (control box side).

•When using the drain port on the right side of the unit, reinstall the drain cap to the left side drain port.

Drain port

Drain hose

Ris

Supporter

1.5 to 2 m

Air bleeding

Drain cap Nylon fastener

Tr ap

CAUTION

Always check that the drain cap is installed to the unused drain port and is fastened with the nylon fastener. If the drain cap is not installed, or is not sufficiently fastened by the nylon fastener, water may drip during the cooling operation.

• Cut the drain hose insulation at a position approximately 30mm from the end with cutters, etc.

• Stick the large drain hose insulation at the drain hose installation side.

• Stick the small drain hose insulation at the drain cap side.

450 mm

Cut line

170 mm

Drain hose insulation (large)

unit

Drain hose

Drain hose insulation (small)

Unit

Drain ca

30 mm

420 mm

170 mm

unit

0 mm (0")

Unit

0 mm (0")

30 mm

170 mm

Drain hose insulation (large)

Drain hose

Drain hose insulation (small)

STANDARD PARTS

The following installation parts are furnished. Use them as required.

INDOOR UNIT ACCESSORIES

Name and Shape

Hanger

Special nut A (large flange)

Special nut B (small flange)

Coupler heat insulation (large)

Coupler heat insulation (small)

Q’ty

Application

For suspending the indoor unit from ceiling

For indoor side pipe joint (large pipe)

For indoor side pipe joint (small pipe)

Name and Shape

Binder

Remote controller

Tapping screw (flush heads)

Remote controller cord

Drain hose insulation

Q’ty

(large)

(small)

Application

For fixing the drain hose

For fixing the remote controller cord

For installing the remote controller

For connecting the remote controller

Insulates the drain hose and vinyl hose

CONNECTING PIPE REQUIREMENT

Diameter

Small

Large

• Use pipe with water-resistant heat insulation.

Install heat insulation around both the gas and liquid pipes. Failure to do so may cause water leaks. Use heat insulation with heat resistance above 120 °C. (Reverse cycle model only) In addition, if the humidity level at the installation location of the refrigerant piping is expected to exceed 70%, install heat insulation around the refrigerant piping. If the expected humidity level is 70-80%, use heat insulation that is 15 mm or thicker and if the expected humidity exceeds 80%, use heat insulation that is 20 mm or thicker. If heat insulation is used that is not as thick as specified, condensation may form on the surface of the insulation. In addition, use heat insulation with heat conductivity of 0.045 W/(m·K) or less (at 20 °C).

9.52 mm (3/8 in.)

15.88 mm (5/8 in.)

CAUTION

ELECTRICAL REQUIREMENT

4. INTAKE DUCT CONNECTION

Follow the procedure in the following figure to the ducts.

1015 mm

240mm

The air inlet duct can be changed by replacing the intake grille and flange.

For the bottom air intake, follow the procedure of → for installation. (The factory setting is back air intake.)

CAUTION

When air is taken in from the bottom side, the operating sound of the product will easily enter the room. Install the product and intake grilles where the affect of the operating sound is small.

CAUTION

If an intake duct is installed, take care not to damage the temperature sensor (the temperature sensor is attached to the intake port flange).

Be sure to install the air inlet grille and the air outlet grille for air circulation. The correct temperature cannot be detected.

Unit

Air Outlet Grille Air inlet Grille

(Room)

5. OUTLET DUCT CONNECTION

Duct installation pattern ( CUT PART)

(1) Square duct

(

2) Round duct outlet ×4 (This is the factory setting.)

When using as a square duct

(1) Cut the slit seam with a cutter.

(2) Turn up the insulation around the points to be cut according

to the outlet port shape working points so that the insulation does not stick out at the

Cut Cut

part.

6. FRESH AIR INTAKE

(Processing before use)

(1) When taking in fresh air, cut a slit shaped cabinet in the left

side of the outer case with nippers.

Cut

Cabinet (iron plate) Square hole

CAUTION

When removing the cabinet (iron plate), be careful not to damage the indoor unit internal parts and surrounding area (outer case).

When processing the cabinet (iron plate), be careful not to injure yourself with burrs, etc.

(2) Install the round flange (option parts) to the fresh air intake.

OPTIONAL PARTS

When connecting the square duct and round duct, use the optional square flange or round flange and flexible duct.

Square flange Round flange

Model name : UTD–SF045T (P/N 9098180007) Model name : UTD–RF204 (P/N 9093160004)

40 mm

ø225 mm

ø195 mm

ø205 mm

204 mm

1065 mm

85 mm

Flexible duct Long-life filter

Model name : UTD–RD202 (P/N 9074165004) Model name : UTD–LF25NA (P/N9079892004)

ø200 mm L 2 m

507 mm

ø235 mm

239 mm

• Electric wire size :

Connection cord (mm2)

MAX.

MIN.

2.5

1.5

• Install the disconnect device with a contact gap of at least 3 mm nearby the units. (Both indoor unit and outdoor unit)

• Always use H07RN-F or equivalent to the connection cord.

Grills must be fixed so that man cannot touch indoor unit fan, and cannot be removed by only hand operation without tool.

Be sure to install the air filter in the air inlet. If the air filter is not installed, the heat exchanger may be clogged and its performance may de-

①

crease.

Cut

(3) Cut with nippers and remove the sheet metal.

(4) Since there is a slit in the insulation, use radio pliers, tweez-

ers, etc. to stretch the screw hole part used when installing the round flange and square flange when connecting the duct.

Cut

Round duct

(3) Connect the duct to the round flange.

(4) Seal with a band and vinyl tape, etc. so that air does not leak

from the connection.

Duct

9374318063B2front 05.3.23, 18:291

Simple remote controller

Model name : UTB–YPB (P/N9077582006)

Remote sensor

Model name : UTD–RS100 (P/N9072619004)

CONNECTING THE PIPING

WARNING

Do not use the existing piping and flare nuts.

• If the existing materials are used, the pressure inside the refrigerant cycle will rise and cause breakage, injury, etc. (Use the special R410A materials.)

CAUTION

Do not use mineral oil on flared part. Prevent mineral oil from getting into the system as this would reduce the lifetime of the units.

While welding the pipes, be sure to blow dry nitrogen gas through them.

1. FLARING

(1) Cut the connection pipe to the necessary length with a pipe

cutter.

(2) Hold the pipe downward so that cuttings will not enter the

pipe and remove the burrs.

(3) Insert the flare nut (always use the flare nut attached to the

indoor and outdoor units respectively) onto the pipe and perform the flare processing with a flare tool. Use the special R410A flare tool, or the conventional flare tool. When using the conventional flare tool, always use an allowance adjustment gauge and secure the A dimension.

Check if [L] is flared uniformly and is not cracked or scratched

Die

Pipe outside

diameter

9.52 mm (3/8 in.)

15.88 mm (5/8 in.)

A (mm)

Flare tool for R410A, clutch type

0 to 0.5

Pip

2. BENDING PIPES

The pipes are shaped by your hands. Be careful not to collapse them.

Extend the pipe

unwinding it

Do not bend the pipes in an angle more than 90°. When pipes are repeatedly bent or stretched , the material will harden, making it difficult to bend or stretch them any more. Do not bend or stretch the pipes more than three times.

When bending the pipe, do not bend it as is. The pipe will be collapsed. in this case, cut the heat insulating pipe with a sharp cutter as shown on the right, and bend it after exposing the pipe. After bending the pipe as you want, be sure to put the heat insulating pipe back on the pipe, and secure it with tape.

Heat insulating Pipe

CAUTION

To prevent breaking of the pipe, avoid sharp bends. Bend the pipe with a radius of curvature of 150 mm or over.

If the pipe is bent repeatedly at the same place, it will break.

Pipe

Cutter

Cut line

3. CONNECTION PIPES

Indoor unit side

Detach the caps and plugs from the pipes.

CAUTION

Be sure to apply the pipe against the port on the indoor unit correctly. If the centering is improper, the flare nut cannot be tightened smoothly. If the flare nut is forced to turn, the threads will be damaged.

Do not remove the flare nut from the indoor unit pipe until immediately before connecting the connection pipe.

To prevent gas leakage, coal the flare surface with alkylbenzen oil (HAB). Do not use mineral oil.

Centering the pipe against port on the indoor unit, turn the flare nut with your hand.

CAUTION

Hold the torque wrench at its grip, keeping it in the right angle with the pipe, in order to tighten the flare nut correctly.

When the flare nut is tightened properly by your hand, use a torque wrench to finally tighten it.

Holding spanner

9.52 mm (3/8 in.) dia.

15.88 mm (5/8 in.) dia.

Torque wrench

Flare nut tightening torque

Flare nut

33 to 42 N·m (330 to 420 kgf·cm)

63 to 77 N·m (630 to 770 kgf·cm)

Unit side

Tightening torque

4. HEAT INSULATION ON THE PIPE JOINTS (INDOOR SIDE ONLY)

Stick coupler heat insulation (large and small) to the place where connecting pipes.

No gaps

Coupler heat insulation

Be sure to overlap the insulation

No gaps

Coupler heat insulation

Be sure to overlap the insulation

CAUTION

There should be no gaps between the insulation and the product.

ELECTRICAL WIRING

CAUTION

Do not bundle the remote controller cord, or wire the remote controller cord in parallel, with the indoor unit connection wire (to the outdoor unit) and the power supply cord. It may cause erroneous operation.

HOW TO CONNECT WIRING TO THE TERMINALS

A. For solid core wiring (or F-cable)

(1) Cut the wire end with a wire cutter or wire-cutting pliers,

then strip the insulation to about 25 mm (15/16”) to expose the solid wire.

(2) Using a screwdriver, remove the terminal screw(s) on the

terminal board.

(3) Using pliers, bend the solid wire to form a loop suitable for

the terminal screw.

(4) Shape the loop wire properly, place it on the terminal board

and tighten securely with the terminal screw using a screwdriver.

B. For strand wiring

(1) Cut the wire end with a wire cutter or wire-cutting pliers,

then strip the insulation to about 10 mm (3/8”) to expose the strand wiring.

(2) Using a screwdriver, remove the terminal screw(s) on the

terminal board.

(3) Using a round terminal fastener or pliers, securely clamp

a round terminal to each stripped wire end.

(4) Position the round terminal wire, and replace and tighten

the terminal screw using a screwdriver.

Strip 25 mm

Insulation

Wire

Loop

Screw with special washer

Te r minal board

Wire

Te r minal block

B. Strand wireA. Solid wire

Strip 10 mm

Screw with special washerRound terminal

Round terminal

1. CONNECTION DIAGRAMS

Remote controller

Black

White

Red

Power line

3 2 1

Indoor unit side terminal

Control line

Outdoor unit

2. INDOOR UNIT SIDE

WARNING

Before starting work, check that power is not being supplied to the indoor unit and outdoor

unit.

Match the terminal board numbers and connection cord colors with those of the outdoor unit. Erroneous wiring may cause burning of the electric parts.

Connect the connection cords firmly to the terminal board. Imperfect installation may cause a fire.

Always fasten the outside covering of the connection cord with the cord clamp. (If the insulator is chafed, electric leakage may occur.)

Always connect the ground wire.

(1) Remove the control box cover and install each connection

wire.

Control box cover

Screw

(2) After wiring is complete, secure the remote controller cord,

connection cord, and power cord with the cord clamps.

Connection cord (to outdoor unit)

45 mm

Cord clamp

Remote controller cord

1223

Remote controller

Connection cord

Outdoor unit

CAUTION

Use care not to mistake the power supply cord and connection wires when installing.

Install so that the wires for the remote controller will not come in contact with other connection wires.

If there is a risk of entering insects and small animals into the hole for cords, fill in the gap with putty.

(3) Install control box cover.

Adjust the position of the screws for control box cover according to the installation.

REMOTE CONTROLLER SETTING

CAUTION

In order to detect the room temperature correctly when using the temperature sensor of the remote controller, do not install the remote controller in a place where it will be exposed to direct sunlight or directly below the air outlet of the indoor unit.

When installing the remote controller and cord near a source of electromagnetic waves, separate the remote controller from the source of the electromagnetic waves and use shielded cord.

Do not touch the remote controller PC board and PC board parts directly with your hands.

1. INSTALLING THE REMOTE CONTROLLER

(1) Open the operation panel on the front of the remote control-

ler, remove the two screws indicated in the following figure, and then remove the front case of the remote controller.

Front case (back side)

DAY

CLOCK ADJUST

DAY OFF

ENERGY

DELETE SET

Screws

THERMO

SAVE

SENSOR

Connecter

Remote controller wires

Rear case

Connecter

SET BACK

When installing the remote controller, remove the connector from the front case. The wires may break if the connector is not removed and the front case hangs down. When installing the front case, connect the connector to the front case.

(2) Install the rear case to the wall, etc. with the two tapping

screws. Refer to the following information to install the remote controller wires.

Front case

Temperature sensor

Rear case

2. ROUTING THE REMOTE CONTROLLER WIRES

(1) Install the remote controller wires to the terminals on the top

of the rear case as shown in the following figure.

(2) Fasten the wires with the binder.

Install the remote controller wires so as not to be direct touched with your hand.

(Example)

1. Red

Binder

2. White

3. Blac

3. SETTING THE DIP SWITCHES

When using a battery (memory backup)

OFF

1 2 3 4 5 6

DIP Switch

Change the DIP switch setting to use batteries. (The DIP switch is not set to use batteries at the factory.) Change DIP switch No. 6 from OFF to ON. If batteries are not used, all of the settings stored in memory will be deleted if there is a power failure.

CAUTION

Be sure to connect the gas pipe after connecting the liquid pipe completely.

4. SETTING THE ROOM TEMPERATURE DETECTION LOCATION

The detection location of the room temperature can be selected from the following three examples. Choose the detection location that is best for the installation location.

A. Indoor unit setting (factory setting)

The room temperature is detected by the indoor unit temperature sensor.

Indoor unit

(1)

When the THERMO SENSOR button is pressed, the lock display flashes because the function is locked at the factory.

B. Remote controller setting

The room temperature is detected by the remote controller temperature sensor.

Indoor unit

(1) Press the THERMO SENSOR button for 5 seconds or more to

unlock the function. The thermo sensor display flashes and then disappears when the function is unlocked.

(2) Press the THERMO SENSOR button.

The thermo sensor display appears.

(3) Press the THERMO SENSOR button again for 5 seconds or

more to lock the function. The thermo sensor display flashes and then remains on when the function is locked.

(4) Make sure that the function is locked.

C.Indoor unit/remote controller setting (room temperature sensor selection)

The temperature sensor of the indoor unit or the remote controller can be used to detect the room temperature.

Indoor unit

(1) Press the THERMO SENSOR button for 5 seconds or more to

unlock the function. The thermo sensor display flashes and then disappears when the function is unlocked.

(2) Press the THERMO SENSOR button to select the tempera-

ture sensor of the indoor unit or the remote controller.

NOTES

If the function to change the temperature sensor is used as shown in examples A and B (other than example C), be sure to lock the detection location. If the function is locked, the lock display will flash when the THERMO SENSOR button is pressed.

TEST RUN

CAUTION

Supply power to the crankcase heater for at least 12 hours before the start of operation in winter.

(1) Stop the air conditioner operation.

(2) Press the master control button and the fan control button

simultaneously for 2 seconds or more to start the test run.

Te st run displa

(3) Press the start/stop button to stop the test run.

[SELF-DIAGNOSIS]

When the error indication “E:EE” is displayed, follow the following items to perform the self-diagnosis. “E:EE” indicates an error has occurred.

REMOTE CONTROLLER DISPLAY

(1) Stop the air conditioner operation.

(2) Press the set temperature buttons simultaneously for 5

seconds or more to start the self-diagnosis. Refer to the following tables for the description of each error code.

Unit number (usually 0)

SUMOTUWETH FR

(3) Press the set temperature buttons simultaneously for 5

seconds or more to stop the self-diagnosis.

Error cod

Error code Error contents

00 01 02

04 05

Communication error (indoor unit

Room temperature sensor open

Room temperature sensor short-circuited

Indoor heat exchanger temperature sensor open

Indoor heat exchanger temperature sensor short-circuited

Outdoor heat exchanger temperature sensor

Power source connection error

Float switch operated

Outdoor temperature sensor

Discharge pipe temperature sensor

Outdoor high pressure abnormal

Model abnormal

Indoor fan abnormal

remote controller)

outdoor unit)

12 13

Outdoor signal abnormal

Outdoor EEPROM abnormal

Compressor temperature sensor

Pressure switch error

IPM error

CT error

Active filter module (AFM) error

Compressor does not operate

Outdoor unit fan error

Communication error (inverter multicontroller)

2 way valve sensor error

Expansion valve error

Connection indoor unit error

SPECIAL INSTALLATION METHODS

CAUTION

When setting the rotary switch and DIP switches, do not touch any other parts on the circuit board directly with your bare hands.

Be sure to turn off the main power.

1. GROUP CONTROL SYSTEM

A number of indoor units can be operated at the same time using a single remote controller.

(1) Wiring method (indoor unit to remote controller)

Indoor unit

No. 0

Remote controller wire

(2) Rotary switch setting (indoor unit)

Set the unit number of each indoor unit using the rotary switch on the indoor unit circuit board. The rotary switch is normally set to 0.

(3) DIP switch setting (remote controller)

Change DIP switch No. 3 on the remote controller from OFF to ON.

Indoor unit

Rotary Switch

2. DUAL REMOTE CONTROLLERS (OPTIONAL)

Two separate remote controllers can be used to operate the indoor units.

(1) Wiring method (indoor unit to remote controller)

Remote controller wire

1 2 3

Indoor unit

No. 1

Remote controller

Indoor unit

No. 2

1 2 3 1 2 3 1 2 3

Remote controller

SW3

Indoor unit

1 2 3

Remote

Master unit Slave unit

controller

Indoor unit

ONOFF

1 2 3 4 5 6

DIP Switch

1 2 31 2 3

No. 3

(2) DIP switch setting (remote controller)

Set the remote controller DIP switch Nos. 1 and 2 according to the following table.

Number of remote controllers

1 (Normal)

2 (Dual)

Number of remote controllers

1 (Normal)

2 (Dual)

Master unit

DIP-SW

No. 1

OFF

DIP-SW

No. 1

–

DIP-SW

No. 2

OFF

Slave unit

DIP-SW

No. 2

–

Remote

controller

1 2 3 4 5 6

3. CANCELING AUTO RESTART

The auto restart function can be canceled.

(1) DIP switch setting (indoor unit)

Change the DIP switch (SW2-3) on the indoor unit circuit board from OFF to ON. The auto restart function will be canceled.

Indoor unit

OFF

DIP Switch

123

SW2

[DIP-SWITCH SETTING]

• Indoor unit

NO.

1–✽ – Remote sensor setting

SW2

2 Edge ✽ Pulse Control input setting

DIP-

Switch

3Validity ✽ Invalidity Auto restart setting

• Remote controller

NO.

1 ✽

2 ✽

3One unit ✽ Multiple unit

DIP-

Switch

5 Invalidity Validity ✽

6 Invalidity ✽ Validity

SW state

OFF ON

SW state

OFF ON

Heat &Cool model

Detail

Dual remote controller setting

Group control setting

Cooling only model

Auto changeover setting

Memory backup

✽: Factory setting

ONOFF

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