S A M S U N G DV MT M Air Conditioner

SAMSUNG ELECTRONICS

IV V

I. Overview

1. DVM system series

1-1. What is DVM?

The DVM(Digital Variable Multi) air conditioning system is operated by a variable-capacity compressor and is accommodated by multiple evaporators (indoor units). It is touted as the next-generation modular system in the world of high-efficiency air conditioning. lt has undoubtedly changed the face of cooling associated with high-storied buildings. It provides a broad range of different applications for settings such as offices, hotels and schools. With its easy installation and simple controlling system, the DVM will more than meet the demands of the air conditioning market.

Outdoor unit

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1-2. Features of DVM

(1)Customized air conditioner

1)Up to 16 indoor units can be connected to one outdoor unit.

2)Indoor units can be combined by various methods, according to each room???s use and shape.

3)There are several indoor units which can be applied; 1-way cassette type, 4-way cassette type, Ceiling, Duct (Low silhouette, Built-in, High pressure), Wall-mounted and Floor standing type.

(2)Comparison of DVM with conventional air conditioners

1)DVM air conditioner

??? Variable capacity (Energy Saving)

??? Competitive price (Compared with the Inverter type)

??? Can be installed in houses / commercial buildings

??? Versatile combination of indoor units

??? Various remote controls

2) Conventional air conditioners

??? Fixed capacity

??? Unfavorable in case of installing more than 3 units / system

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I. Overview

1. DVM system series

(3) Variable compressor

The world???s first PWM(Pulse Width Modulation) compressor controls the cooling & heating capacity automatically, depending on the load.

1) Principle of the digital compressor

??? Composition

The solenoid valve is installed for the compressor??s loading / unloading between the upper part of the fixed scroll and the suction pipe.

???Mechanism

a.When the solenoid valve is turned off, the fixed scroll is closed to the orbiting scroll (Loading),

b.When the solenoid valve is turned on, the fixed scroll is separated from the orbiting scroll (Unloading),

c.This process controls the On / Off times of the valve and the rotating refrigerants in the circle, thus adjusting the capacity.

d.The cooling capacity of the outdoor unit is controlled automatically,depending on the number of operating indoor unit(s).

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2) PWM (Pulse Width Modulation) valve

PWM valve is the valve to take away the fixed scroll by lifting up through the difference of pressure after the digital scroll compress being connected to the outlet and inlet of suction. Therefore, the capacity of compressor is controlled automatically according to the operation status such as loading when the valve is closed or unloading when the valve is opened. PWM means the control of ON/OFF signal to the valve for loading/unloading.

Relationship between PWM valve and loading/unloading

(4) Refrigerant flow rates control

Refrigerant flow rates through the electronic expansion valve are controlled by the 2 factors which are the temperature difference between inlet and outlet of evaporator and the difference between room and set temperature.

a.An electronic expansion valve optimally distributes refrigerant flow rates to each room and the fuzzy logic enables comfortable cooling more precisely; refer to the figure below.

b.The air conditioner senses the temperature difference between inlet and outlet of evaporator, plus the temperature difference between room and set temperature. And it calculates the superheat and the room temperature status, then adjusts refrigerant flow rates after deciding the opening steps of valve.

??????

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I. Overview

1. DVM system series

???The results are based on Samsung Lab., therefore there may be differences according to the condition of installation and the environment of the use.

???Heat loads : 90,000 kcal/h in Korea

???Total area : 750m2

???Running : 3 months in every summer and winter

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(9) Space Saving

The outdoor units connected with several indoor units do not require much space.

1) Conventional System

2) DVM System

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I. Overview

1. DVM system series

1-3. DVM vs VAV

(1) Excellent energy efficiency

???The results are based on Samsung Lab., therefore there may be differences according to the condition of installation and the environment of the use.

???Heat loads : 90,000 kcal/h in Korea. The SEER of the DVM is 8~75% higher than the VAV, and increasing

the zone control is different from decreasing the SEER.

??? Condition A : DB26.7/WB19.4??C, DB35/WB23.9??C

B : DB26.7/WB19.4??C, DB27.8/WB18.3??C

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(2) DVM test condition

Pipe (Copper)

??? Zone control conditions

??? Zone control conditions

Outdoor unit : Fixed compressor(21kW)

??? The static pressure is equal to the maximum open position by adjusting the damper.

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I. Overview

2. DVM line-up

2-1. Numbering system of model

(1) Indoor unit and outdoor unit (Conventional model)

??? Version

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(2)Indoor unit and outdoor unit (New Model)

1)Indoor unit

Model

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I. Overview

2.DVM line-up

2)Outdoor unit

Model

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(3) Options

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I. Overview

2. DVM line-up

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I. Overview

2. DVM line-up

2-2. Combination

(1)Outdoor unit

1) Cooling only

??? The system enables the connection of indoor units with a total capacity of between 50 to 130% of that of the corresponding outdoor unit but where this capacity ratio exceeds 100% then the actual capacity of each indoor unit will fall a little short of its individual rated capacity when all the units are operated simultaneously. (Except Middle East models)

??? The specification of super cooler may differ, depending on the model.

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??? The system enables the connection of indoor units with a total capacity of between 50 to 130% of that of the corresponding outdoor unit but where this capacity ratio exceeds 100% then the actual capacity of each indoor unit will fall a little short of its individual rated capacity when all the units are operated simultaneously. (Except Middle East models)

??? The specification of super cooler may differ, depending on the model.

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I. Overview

2. DVM line-up

2) Heat pump

??? The system enables the connection of indoor units with a total capacity of between 50 to 130% of that of the corresponding outdoor unit but where this capacity ratio exceeds 100% then the actual capacity of each indoor unit will fall a little short of its individual rated capacity when all the units are operated simultaneously. (Except Middle East models)

??? The specification of super cooler may differ, depending on the model.

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??? The system enables the connection of indoor units with a total capacity of between 50 to 130% of that of the corresponding outdoor unit but where this capacity ratio exceeds 100% then the actual capacity of each indoor unit will fall a little short of its individual rated capacity when all the units are operated simultaneously. (Except Middle East models)

??? The specification of super cooler may differ, depending on the model.

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I. Overview

1. System line-up

(2) Indoor unit

??? The design and capacity of indoor unit are subject to change without notice.

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??? The design and capacity of indoor unit are subject to change without notice.

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II. Control System

1. Remote controller

1-1. Wireless remote controller

(1)1-way / 4-way cassette / Wall-mounted / Floor standing / Ceiling type

1)Cooling only (MR-AC01)

On/Off & Timer set/cancel button

2) Heat pump

On/Off & Timer set/cancel button

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II. Control System

1. Remote controller

1-2. Wired remote controller

(1)1-way / 4-way cassette / Wall-mounted / Floor standing / Ceiling type

1)Cooling only

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(2)Duct type

1)Cooling only

Operating mode

Automatic Cool

2) Heat pump

Operating mode

Automatic Cool

Dry Fan Heat

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II. Control System

1. Remote controller

1-3. Centralized controller

All Off button

On/off indicators

Individual On/Off button

Index

1-4. Function controller

Operating mode

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2. Receiver & display unit (Duct type)

2-1. Concealed type

(1) Cooling only

Filter sign indicator

Fan indicator

Timer indicator

Remote control sensor

On/Off button

(2) Heat pump

Filter sign indicator

Fan indicator

Timer indicator

Remote control sensor

On/Off button(Blue) & Removing frost indicator(Red)

???This receiver & display unit should be applied to duct type air conditioners when using the wireless remote controller, and the receiver & display unit wire kit must be purchased together.

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II. Control System

2. Receiver & display unit (Duct type)

2-2. Standard type

(1) Cooling only

Filter sign indicator

Remote control sensor

On/Off indicator

Fan indicator

On/Off button

Timer indicator

(2) Heat pump

Removing frost indicator

Filter sign indicator

Remote control sensor

On/Off indicator

Fan indicator

On/Off button

Timer indicator

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3. Transmitter

CN01

F1 F2

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II. Control System

4. Installation

4-1. Wireless remote controller

(1) Accessories

(2)Installation

Choose a position where:

??? The signal from the remote controller will not be blocked

(by a curtain for example)

??? The remote controller is not exposed to direct sunlight or heat

??? The wireless remote controller is at least one meter away from a television or stereo system to avoid generating any parasites

To attach the holder to the wall, proceed as follows.

1)With a pencil, mark the positions of the two holes on the wall where the holder is to be installed.

2)Drill the two holes and insert plugs as required for the type

of wall on which the holder is being installed.

3) Screw the holder into position.

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4-2. Wired remote controller

(1) Accessories

(2) Installation

1) Open the wired remote controller by using two grooves on its top.

2) Secure the rear cover of the wired remote controller on the wall with 2 screws.

3) Connect each F1, F2, V1, and V2 terminal on the wired remote controller PCB to the indoor unit.

4) Reassemble the wired remote controller.

5)In case of 1-way Cassette type, connect terminals with the main PCB of indoor unit as shown at the figure.

Note ??? Be careful about the cables so that they will not be mixed up.

Main PCB of indoor unit

Wired remote controller PCB

??? The wired remote controller must be installed by an installation specialist.

???Before installing the wired remote controller, ensure that you have turned off the main power.

???All wired remote controller cables should be installed according to the national wiring rules and you must install it in the wall not to be touched by users.

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DIP Switch

2)Adjust the DIP switch to appropriate position. Refer to the table below.

??? All indoor units you wish to control with wired remote controller must have the same RMC address.

???Indoor units controlled with the same wired remote controller should be connected to the same outdoor unit and must have different MAIN addresses.

???If you would like to use the wired remote controller and the centralized controller together, refer to page II-16.

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(4) Example of installing wired remote controller

Individual control

Means a wired remote controller controls only 1 indoor unit. In this case, the RMC address of the

indoor unit should be the same with the address of wired remote controller.

Indoor unit PCB

Address of wired remote controller

Each indoor unit is controlled with its own wired remote controller.

Individual & Group control

Means a wired remote controller controls more than 2 indoor units. In this case, the RMC address of all indoor units to be controlled by the wired remote controller should be the same with the address of wired remote controller.

Indoor unit PCB

K1 K2 K3 K4

Outdoor unit

Address of wired remote controller

An indoor unit is controlled with assigned ???0??? wired controller, the others are controlled as a group by assigned ???1??? wired remote controller.

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II. Control System

4. Installation

4-3. Centralized controller

(1) Accessories

Note ??? If you would like to install the centralized controller, you must install the optional transmitter in the outdoor unit.

(2) Wiring diagram

Each outdoor unit connected to the same centralized controller must have its own transmitter.

Outdoor unit 1

Transmitter 1

Centralized

controller

Outdoor unit 2

Transmitter 2

(3) Transmitter installation

AC power supply

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???Means a centralized controller controls only 1 indoor unit. In this case, you should assign the RMC address to the indoor unit.

Group control ;

???Means a centralized controller controls more than 2 indoor units. In this case, you should assign the RMC address to each indoor unit to be controlled by the centralized controller and cannot use a wireless remote controller.

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II. Control System

4. Installation

In Case of Installing wired remote controller together

1) Adjust K2 DIP switch(SW03) on the indoor unit PCB to the

SW03

Note ??? The number of button on the centralized controller is decided by the RMC addresses of indoor units. Refer to the table below.

???A group is made up of indoor units controlled with the same wired remote controller.

???If the wired remote controller is installed for group controlling, you can install/use the centralized controller to control the same group.

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(6) Example of centralized controller & wired remote controller

Installation of 1 centralized controller, 4 outdoor units, and 12 indoor units

???6 indoor units connected to the outdoor unit 1 and 2 are controlled with their own wired remote controller and a centralized controller.

???3 indoor units connected to the outdoor unit 3 are controlled as a group by a wired remote controller and a centralized controller.

???2 indoor units connected to the outdoor unit 4 are controlled a wired remote controller and a centralized controller, the other indoor unit is only controlled by a wired remote controller.

Outdoor unit 1

Centralized controller

SW03 switch in indoor unit

Transmitter 1

SW03 switch in indoor unit

Transmitter 2

SW03 switch in indoor unit

Transmitter 3

Transmitter 4

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II. Control System

4. Installation

??? If there is installed the wired remote controller together, refer to the table below.

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4-4. Function controller

(1) Accessories

(2)Installation

1)Disassemble the function controller by using a groove on its top.

2) Secure the rear cover of the function controller on the wall with two screws.

3) Connect the C1 and C2 terminals in the function controller to the same terminals in the centralized controller.

4) Reassemble the function controller.

Centralized

controller

Adaptor

Rated input 220V-240V/50~60Hz

??? You must align the same terminal when connecting cables. If the cables are connected improperly, the function controller will not work.

???The adaptor is not supplied with the function controller. Keep the polarity below when connecting the adaptor. - V1 : DC +12V, V2 : DC Ground

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II. Control System

4.Installation

(3)Wiring diagram

???Install the transmitter, another optional accessory, in the outdoor unit which will be controlled by the centralized controller, then connect the function controller and the centralized controller to the transmitter.

???Each outdoor unit connected to the same centralized controller must have its own transmitter.

???Distance between the centralized controller and the last transmitter should be 1000 meters or less.

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4-5. Receiver & display unit - Concealed type

(1) Accessories

(2) Installation

4)Secure the receiver & display unit on the wall with two screws.

5)Reassemble the receiver & display unit cover.

??? The receiver & display unit must be installed by an installation specialist.

???Before installing the receiver & display unit, ensure that you have turned off the main power.

???All receiver & display unit cables should be installed according to the national wiring rules and you must install it in the wall not to be touched by users.

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II. Control System

4. Installation

4-6. Receiver & display unit - Standard type

(1) Accessories

(2) Installation

4)Close the receiver & display unit.

5)Secure the receiver & display unit on the wall with two screws.

6)Reassemble the receiver & display unit cover.

??? The receiver & display unit must be installed by an installation specialist.

???Before installing the receiver & display unit, ensure that you have turned off the main power.

???All receiver & display unit cable should be installed according to the national wiring rules and you must install it in the wall not to be touched by users.

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(2)Installation

???Attach the transmitter to the left side of the electrical component box in outdoor unit,

then connect the power and communication cable between the transmitter and the outdoor; refer to the figure below.

???If you install a transmitter to an outdoor unit, every indoor unit which is connected to an outdoor unit can be controlled simultaneously.

???Each outdoor unit connected to the same centralized controller has its own transmitter.

F1 F2

Communication cable

Outdoor unit

Electrical component box

??? Distance between the centralized controller and the last transmitter should be 1000 meters or less.

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II. Control System

4.Installation

(3)Wiring diagram

???Each outdoor unit connected to the same centralized controller has its own transmitter.

???Distance between the centralized controller and the last transmitter should be

1000 meters or less.

Outdoor unit 1

Transmitter 1

Centralized

controller

Outdoor unit 2

(5) Assigning address

??? Turn the arrow of rotary switch on the transmitter to appropriate position. Transmitters controlled with the same centralized controller must have different addresses.

Transmitter rotary switch

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5. Assigning address

5-1. Indoor unit

1)Before installing the indoor unit, assign an address to the indoor unit according to the air conditioning system plan.

2)The address of the indoor unit is assigned by adjusting MAIN(SW02) and RMC(SW01)

SW02 MAIN SW01 RMC

3)The MAIN address is for communication between the indoor unit and the outdoor unit. Therefore, you must set it to operate the air conditioner properly.

4)It is required to set the RMC address if you install the wired remote controller and/or the centralized controller.

5)If you install optional accessories such as the wired remote controller, centralized controller, etc. see an appropriate installation manual.

6)If an optional accessory is not installed, you do not have to set the RMC address. However, adjust K1 and K2 switches of the SW03 DIP switch to "ON" position in this case.

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II. Control System

5. Assigning address

5-2. Outdoor unit

Rotary switch

Outdoor unit PCB

You should display that how many indoor units are connected to the outdoor unit.

Refer to the table below, then turn the arrow to appropriate position.

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6. Indoor unit PCB option code

6-1. PCB option code input method (example : 021E31142285)

Be sure to input the option code suitable for the indoor unit by use of wireless remote controller after replacing the PCB of indoor unit.

Follow to do the following 15 steps sequentially.

??? Step 1

Method)

??? Remove the battery of remote controller.

??? Push the temperature adjustment button simultaneously.

??? Insert the battery.

Result)

When the display of remote controller is indicated as shown in the right, then go to the step 2.

??? Step 2

Method)

If the first digit of remote controller shows "0", go to the step 3.

??? If it shows 1, press the operation selection button one time to change it into 0 and then go to step 3.

??? Step 3

Method)

Input the second digit of option code by pressing the temperature adjustment button (up). example) 021E31142285

Result)

If 2 is displayed, go to the step 4 (whenever pressing the button, 1~9, A,B,C,D,E,F are lit in order.)

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II. Control System

6. Indoor unit PCB option code

??? Step 4

Method)

Input the third digit of option code by pressing the temperature adjustment button (down). example) 021E31142285

Result)

If 1 is displayed, go to the step 5.

??? Step 5

Method)

Input the fourth digit of option code by pressing the fan speed adjustment button.

example) 021E31142285

Result)

If E displays, go to step 6.

??? Step 6

Method)

Input the fifth digit of option code by pressing the On timer button. example) 021E31142285

Result)

If 3 displays, go to step 7.

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??? Step 7

Method)

Input the sixth digit by pressing the Off timer button.

example) 021E31142285

Result)

If 1 displays, go to step 8.

??? Step 8

Method)

After completion up to step 7, pressing mode button.

??? 1 ~ 7 steps are saved internally.

??? If the first number is 1 at the time, it is correct. So go to step 9.

??? If wanting to see the screen of 2 ~7 steps, press the mode button to make the first digit 0.

??? Step 9

Method)

Input the eighth digit by pressing the temperature adjustment button (up).

example) 021E31142285

Result)

If 4 displays, go to step 10.

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II. Control System

6. Indoor unit PCB option code

??? Step 10

Method)

Input the ninth digit by pressing the temperature adjustment button (down).

example) 021E31142285

Result)

If 2 displays, go to step 11.

??? Step 11

Method)

Input the tenth digit by pressing fan speed adjustment button. example) 021E31142285

Result)

If 2 displays, go to step 12.

??? Step 12

Method)

Input the 11st digit by pressing the

On timer button.

example) 021E31142285

Result)

If 8 displays, go to step 13.

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??? Step 13

Method)

Input the 12th digit by pressing the

Off timer button.

example) 021E31142285

Result)

If 5 displays, go to step 14.

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II. Control System

6. Indoor unit PCB option code

6-2. Option code

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II. Control System

7. S-Net

Rear of computer

1)Download S-NET program to your PC, then execute Setup.exe to install the program.

2)If the installation is completed successfully, connect RS-485 converter to COM1 or COM2 port on your computer.

3)Connect R1 and R2 terminals on the transmitter PCB to TX+ and TX- on the RS-485 converter.

4) Double-click DVMSNET 2.0 icon to open the program after completing the installation.

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8. Integrating power distribution system

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II. Control System

9. Building management system

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(3) Features of 4-way cassette type

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(3)Features of Duct type

1)Application methods

2) Way of air intake & Inserting air filter

Air intake can be positioned either at the back or below the unit. Similarly, the air filter can be inserted either from the back or from the bottom of the unit.

min. 260mm

Air filter

Air filter

Air intake from belowAir intake from the back

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It is easy to clean as the grille can be pulled apart and easy to replace as it just slides in.

5) One-touch hanger plate

The main housing and the installation plate can be easily separated with a simple movement as shown in the diagram.

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5) Design

Air flow blades (up/down orientation)

Air flow blades (right/left orientation)

Automatic shutter

Air outlet

Air filter

Air inlet

??? Control panel

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(3)Features of ceiling type

1)Long life filter with antibacterial treatment

The detachable filter can be cleaned easily,

thus controlling the propagation of fungi & bacteria.

2) Drain water lift-up mechanism (Optional)

The ???Drain water lift-up??? mechanism offers more

flexible installation.

3) Double auto swing

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(2) 60Hz

???1) Indoor temperature : 27??C DB, 19??C WB / Outdoor temperature : 35??C DB, 24??C WB / Piping length : 10m, difference : 0m

???2) Indoor temperature : 20??C DB, 19??C WB / Outdoor temperature : 7??C DB, 6??C WB / Piping length : 10m, difference : 0m

???3) Actual noise level may differ, depending on the room structure, etc, since these noise values are from an anechoic room.

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(2) 60Hz

???1) Indoor temperature : 27??C DB, 19??C WB / Outdoor temperature : 35??C DB, 24??C WB / Piping length : 10m, difference : 0m

???2) Indoor temperature : 20??C DB, 19??C WB / Outdoor temperature : 7??C DB, 6??C WB / Piping length : 10m, difference : 0m

???3) Actual noise level may differ, depending on the room structure, etc, since these noise values are from an anechoic room.

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(2) 60Hz

???1) Indoor temperature : 27??C DB, 19??C WB / Outdoor temperature : 35??C DB, 24??C WB / Piping length : 10m, difference : 0m

???2) Indoor temperature : 20??C DB, 19??C WB / Outdoor temperature : 7??C DB, 6??C WB / Piping length : 10m, difference : 0m

???3) Actual noise level may differ, depending on the room structure, etc, since these noise values are from an anechoic room.

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???1) Indoor temperature : 27??C DB, 19??C WB / Outdoor temperature : 35??C DB, 24??C WB / Piping length : 10m, difference : 0m

???2) Indoor temperature : 20??C DB, 19??C WB / Outdoor temperature : 7??C DB, 6??C WB / Piping length : 10m, difference : 0m

???3) Actual noise level may differ, depending on the room structure, etc, since these noise values are from an anechoic room.

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???1) Indoor temperature : 27??C DB, 19??C WB / Outdoor temperature : 35??C DB, 24??C WB / Piping length : 10m, difference : 0m

???2) Indoor temperature : 20??C DB, 19??C WB / Outdoor temperature : 7??C DB, 6??C WB / Piping length : 10m, difference : 0m

???3) Actual noise level may differ, depending on the room structure, etc, since these noise values are from an anechoic room.

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(2) 60Hz

???1) Indoor temperature : 27??C DB, 19??C WB / Outdoor temperature : 35??C DB, 24??C WB / Piping length : 10m, difference : 0m

???2) Indoor temperature : 20??C DB, 19??C WB / Outdoor temperature : 7??C DB, 6??C WB / Piping length : 10m, difference : 0m

???3) Actual noise level may differ, depending on the room structure, etc, since these noise values are from an anechoic room.

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???1) Indoor temperature : 27??C DB, 19??C WB / Outdoor temperature : 35??C DB, 24??C WB / Piping length : 10m, difference : 0m

???2) Indoor temperature : 20??C DB, 19??C WB / Outdoor temperature : 7??C DB, 6??C WB / Piping length : 10m, difference : 0m

???3) Actual noise level may differ, depending on the room structure, etc, since these noise values are from an anechoic room.

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???1) Indoor temperature : 27??C DB, 19??C WB / Outdoor temperature : 35??C DB, 24??C WB / Piping length : 10m, difference : 0m

???2) Indoor temperature : 20??C DB, 19??C WB / Outdoor temperature : 7??C DB, 6??C WB / Piping length : 10m, difference : 0m

???3) Actual noise level may differ, depending on the room structure, etc, since these noise values are from an anechoic room.

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(2) 60Hz

???1) Indoor temperature : 27??C DB, 19??C WB / Outdoor temperature : 35??C DB, 24??C WB / Piping length : 10m, difference : 0m

???2) Indoor temperature : 20??C DB, 19??C WB / Outdoor temperature : 7??C DB, 6??C WB / Piping length : 10m, difference : 0m

???3) Actual noise level may differ, depending on the room structure, etc, since these noise values are from an anechoic room.

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(2) 60Hz

???1) Indoor temperature : 27??C DB, 19??C WB / Outdoor temperature : 35??C DB, 24??C WB / Piping length : 10m, difference : 0m

???2) Indoor temperature : 20??C DB, 19??C WB / Outdoor temperature : 7??C DB, 6??C WB / Piping length : 10m, difference : 0m

???3) Actual noise level may differ, depending on the room structure, etc, since these noise values are from an anechoic room.

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3-3. Duct type (Low silhouette)

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3-6. Wall-mounted type

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4. Capacity table

4-1. 50Hz

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TC : Total capacity

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TC : Total capacity

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4-2. 60Hz

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TC : Total capacity

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TC : Total capacity

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5. Dimension

5-1. 1-way cassette type

Unit : mm

??? Check the position of remote control sensor and indicators before installing the unit.

??? If you want to install optional parts, refer to an appropriate installation manual.

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(2) 10.5kW

Unit : mm

??? Check the position of remote control sensor and indicators before installing the unit.

??? If you want to install optional parts, refer to an appropriate installation manual.

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5-4. Duct type (Built-in)

(1) 2.0kW ~ 4.0kW

Unit : mm

??? If you want to install optional parts, refer to an appropriate installation manual.

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5-5. Duct type (High pressure)

Unit : mm

??? If you want to install optional parts, refer to an appropriate installation manual.

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(2) 5.2kW ~ 7.2kW

Unit : mm

??? If you want to install optional parts, refer to an appropriate installation manual.

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??? If you want to install optional parts, refer to an appropriate installation manual.

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5-8. Ceiling type

Unit : mm

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??? AVMWC???

??? AVMWH???

Timer indicatorRemote control sensor

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??? AVMFC???

??? AVMFH???

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???MRK-B00(concealed type)

???MRW-10A(wire kit)

???MRK-A00(standard type)

???MRW-10A(wire kit)

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(2)For duct type (AVMD??? / AVMB??? / AVMH???)

???MWR-AC00

Wiring hole

??? MWR-AH00

Wiring hole

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6. Refrigerant system diagram(Cooling only & heat pump)

6-1. Refrigerant system diagram

electronic expansion valve kit

fan

temperature sensor

motor

strainer

strainer

heat exchanger

temperature sensor

temperature sensor

6-2. Main parts status

(1) Temperature sensor (EIS, Evaporator Inlet Sensor)

The means to measure the refrigerant temperature at the inlet of heat exchanger which is used as the data for control of electronic expansion valve.

(2) Temperature sensor (EOS, Evaporator Outlet Sensor)

The means to measure the refrigerant temperature at the outlet of heat exchanger which is used as the data for control of electronic expansion valve.

(3) Temperature sensor (IATS, Indoor Air Temperature Sensor)

The means to measure the indoor temperature which is used as the data for operation method of indoor and outdoor unit.

(4) Electronic expansion valve (EEV) kit

For the MICOM of indoor unit to control the opening of electronic expansion valve by comparing the temperatures of inlet and outlet of heat exchanger for the optimum control of refrigerant flow.

(5) Strainer

It has the structure in which the filter is inserted and it removes the foreign material from the piping inside.

I 73

(2) Heat pump (AVMDH??? / AVMBH??? / AVMHH???)

I 79

(2) Heat pump (AVMPH???)

I 83

(2) Heat pump (AVMFH???)

I 85

I. Indoor unit

8. Noise level

8-1. Overall

??? These test results are based on the standard installation condition.

??? Actual noise level may differ, depending on the room structure, etc. since these noise values are from an anechoic room.

I 86

8-2. Octave band level

(1) 1-way cassette type

Octave band center freqency(Hz)

Octave band center freqency(Hz)

I 87

(2) 4-way cassette type

Octave band center freqency(Hz)

Octave band center freqency(Hz)

I 89

(3) Duct type (Low silhouette)

Octave band center freqency(Hz)

Octave band center freqency(Hz)

I 91

Octave band center freqency(Hz)

Octave band center freqency(Hz)

I 93

(5) Duct type (High pressure)

Octave band center freqency(Hz)

Octave band center freqency(Hz)

I 95

Octave band center freqency(Hz)

Octave band center freqency(Hz)

I 97

(7) Floor standing type

Octave band center freqency(Hz)

Octave band center freqency(Hz)

I 99

(8) Ceiling type

Octave band center freqency(Hz)

Octave band center freqency(Hz)

I 101

9-2. 4-way cassette type

(1)AVMCH070???

1)Velocity of air flow

1.5m/sec

1.5

1.0m/sec

1

0.5m/sec

0.5

2) Heating temperature distribution

I 103

9-3. Wall-mounted type

(1)AVMWH035???

1)Velocity of air flow

1.5

0.5m/sec

0.5

2) Heating temperature distribution

32 C

1

29 C

0.5

Note ??? The standard ceiling height is 2.7 meters and those values are tested at the standard height.

I 105

9-4. Ceiling type

(1)AVMFH070???

1)Velocity of air flow

2) Heating temperature distribution

1.5

35 C

0.5

Note ??? The standard ceiling height is 2.7 meters and those values are tested at the standard height.

I 107

I 108

I 109

I. Indoor unit

10. Fan specifications

11. Panel

11-1. 1-way cassette type

(1) Design

(2) Status

I 111

12. Electronic expansion valve kit

12-1. Design

A

B

C

12-2. Status depending on the combination

??? An electronic expansion valve can be applied to 1~3 indoor units. If you want to install more indoor units, separate it properly.

I 113

Note ??? For specifications of panel and electronic expansion valve, refer to pages 111~113 at this chapter.

???In case of the wireless remote controller, which is the option for duct type, wireless remote controller, receiver & display unit wire and receiver & display unit should be purchased together.

I 115

IV. Outdoor unit

1. Unit selection (with cooling load)

1-1. Indoor unit selection

Select the nearest load capacity indoor unit with given load after finding indoor and outdoor temperature using indoor unit capacity table. (The indoor unit capacity should larger than given load.)

??? The described capacity may be different to each indoor unit according to combination. So, the real capacity should be calculated with outdoor unit capacity table.

1-2. Outdoor unit selection

The allowable combination is described on the indoor unit combination total capacity index table.

For the standard of indoor unit and outdoor unit combination, select the nearest value that the total indoor unit capacity index is less than a 100% outdoor unit combination capacity index.

??? Indoor unit combination total capacity index

??? Indoor unit capacity index

- 50Hz

- 60Hz

1-3. Real function data

(1)Select the exact table according to outdoor unit model and combination rate using outdoor unit capacity table. According to given indoor and outdoor temperature, find outdoor unit capacity and power input using the table. Each indoor unit capacity (power input) is calculated as follow.

IUC=AUC x INX/TNX

IUC: Each indoor unit capacity (power input)

OUC: Outdoor unit capacity (power input)

INX: Each indoor unit capacity index

TNX: Total capacity index

(2)According to pipe length, change the indoor unit capacity.

If the changed capacity is smaller than load, change it to larger capacity indoor unit and repeat the selecting progress.

IV 2

1-4. Example for unit selection with cooling load

(1)Given condition

1)Design condition <Cooling: Indoor 20??C(WB), Outdoor 33??C(DB)>

2)Cooling load

3)Power supply unit: 3 Phase 380V 50Hz

4)Pipe length: 30m

(2)Indoor unit selection

Select the suitable capacity for condition of 'Indoor 20??C(WB), Outdoor 33??C(DB)' using indoor unit capacity table. The selected result is as follow.

(3) Outdoor unit selection

1) Assume the indoor unit and outdoor unit combination as follow.

Outdoor unit: RVMH100GBM0

Indoor unit: AVMKH026EA0 x 2,AVMKH035EA0 x 2,AVMCH052EA0 x 1,AVMCH070EA0 x 1

2) Indoor unit combination total capacity index

26x2 + 35x2 + 52x1 + 70x1 = 244, (244/280) x 100% = 87%

3)Result: Because it is within 50~100%, it is 'Right' selection.

(4)Real function data with indoor unit combination

1)For the 87% combination, calculate the cooling capacity of outdoor unit (RVMH100GBM0).

27.14kW ??? 90% (Indoor temperature: WB 20??C, Outdoor temperature: DB 33??C)

24.12kW ??? 80% (Indoor temperature: WB 20??C, Outdoor temperature: DB 33??C)

Therefore, 26.23 = 24.12 + {(27.14-24.12)/10}x7: Calculated in 87%

2) Outdoor unit (RVMH100GBM0) cooling capacity: 26.23kW ??? 87% (Indoor temperature: WB 20??C, Outdoor temperature: DB 33??C)

3)Capacity change factor with pipe length (30m): 0.95(30m).

4)Each cooling capacity

AVMKH026EA0: 26.23 x 26/244 x 0.95 = 2.66(kW)

AVMKH035EA0: 26.23 x 35/244 x 0.95 = 3.57(kW)

AVMCH052EA0: 26.23 x 52/244 x 0.95 = 5.31(kW)

AVMCH070EA0: 26.23 x 70/244 x 0.95 = 7.15(kW)

IV 3

IV. Outdoor unit

2. Specification

2-1. 50Hz

???1) Indoor temperature : 27??C DB, 19??C WB / Outdoor temperature : 35??C DB, 24??C WB / Piping length : 10m, difference : 0m

???2) Indoor temperature : 20??C DB, 19??C WB / Outdoor temperature : 7??C DB, 6??C WB / Piping length : 10m, difference : 0m

???3) Actual noise level may differ, depending on the room structure, etc, since these noise values are from an anechoic room.

IV 4

???1) Indoor temperature : 27??C DB, 19??C WB / Outdoor temperature : 35??C DB, 24??C WB / Piping length : 10m, difference : 0m

???2) Indoor temperature : 20??C DB, 19??C WB / Outdoor temperature : 7??C DB, 6??C WB / Piping length : 10m, difference : 0m

???3) Actual noise level may differ, depending on the room structure, etc, since these noise values are from an anechoic room.

IV 5

IV. Outdoor unit

2. Specification

2-2. 60Hz

???3) Indoor temperature : 29??C DB, 19??C WB / Outdoor temperature : 46??C DB, 24??C WB / Piping length : 10m, difference : 0m

???4) Actual noise level may differ, depending on the room structure, etc, since these noise values are from an anechoic room.

IV 6

???3) Indoor temperature : 29??C DB, 19??C WB / Outdoor temperature : 46??C DB, 24??C WB / Piping length : 10m, difference : 0m

???4) Actual noise level may differ, depending on the room structure, etc, since these noise values are from an anechoic room.

IV 7

IV. Outdoor unit

3. Functional parts and safety devices

3-1. Outdoor unit

IV 8

IV 9

IV. Outdoor unit

3. Functional parts and safety devices

IV 10

IV 11

IV. Outdoor unit

3. Functional parts and safety devices

IV 12

3-2. Super cooler

IV 13

IV. Outdoor unit

4. Capacity table

4-1. 50Hz

(1) Cooling

IV 14

TC : Total capacity, PI : Power input

IV 15

IV. Outdoor unit

4. Capacity table

IV 16

TC : Total capacity, PI : Power input

IV 17

IV. Outdoor unit

4. Capacity table

(2) Heating

IV 18

IV 19

IV. Outdoor unit

4. Capacity table

4-2. 60Hz

(1) Cooling

IV 20

TC : Total capacity, PI : Power input

IV 21

IV. Outdoor unit

4. Capacity table

IV 22

TC : Total capacity, PI : Power input

IV 23

IV. Outdoor unit

4. Capacity table

IV 24

TC : Total capacity, PI : Power input

IV 25

IV. Outdoor unit

4. Capacity table

IV 26

TC : Total capacity, PI : Power input

IV 27

IV. Outdoor unit

4. Capacity table

(2) Heating

IV 28

IV 29

IV. Outdoor unit

4. Capacity table

IV 30

5. Dimension

5-1. Upward (2-FAN)

Unit : mm

IV 31

6. Refrigerant system diagram

IV 35

IV. Outdoor unit

6.Refrigerant system diagram

(2)??????080/100??????

fan

motor

solenoid valve

(HGBV)

capillary tube

temperature sensor

valve (LBV)

solenoid valve (VBV)

accumulator

low pressure switch

flow direction of refrigerant

bypass flow of protection actuated

IV 36

(3) Main parts status

1) Digital scroll compressor

The variable capacity type compressor to control the capacity up to 10 ~ 100% with 19 steps.

2) Accumulator

To prevent the incoming of the liquid refrigerant to the compressor (prevention of liquid back).

3) Receiver

To reduce the noise by flowing the high pressure liquid refrigerant to the high pressure pipe and to control the amount of refrigerant during the individual operation of indoor unit.

4) Solenoid valve (PWM)

It is installed at the top of digital scroll compressor and at the low pressure pipe, which is used for operating the digital scroll compressor.

When the valve is open, the digital scroll compressor keeps the state of unloading.

5) Solenoid valve (HGBV)

When the low pressure gets lower, the valve is open by the low pressure safety device. The valve is open in order to reduce the load at the start of compressor and when the system stops and then keep the balance of low pressure.

6) Solenoid valve (LBV)

When the compressor is overheated, it actuates to lower the temperature of compressor for stable operation.

7) Solenoid valve (VBV)

The valve is open in order to reduce the load at the start of compressor and when the system stops and then keeps the balance of low pressure.

8) High pressure switch

To stop the system for the system protection when the high pressure exceeds the set value.

9) Low pressure switch

To stop the system for the system protection when the low pressure falls below the set value.

10) Temperature sensor (DTS, Discharge Temperature Sensor)

It is the means to measure the refrigerant temperature of compressor outlet which is used as the data for control of compressor.

11) Temperature sensor (CMS, Condenser Mid Sensor)

It is the detection means to do the optimum control of outdoor fan, which is used as the data for each protection or initial startup.

12) Temperature sensor (COS, Condenser Out Sensor)

It is used as the detection for calculation of over-cooling at the condenser outlet which is referred for the adjustment of refrigerant during refrigerant charging.

13) Temperature sensor (OATS, Outdoor Air Temperature Sensor)

To measure the outdoor temperature which is used for the determination of start method.

14) Fixed scroll compressor

The fixed capacity type compressor.

15) Temperature sensor (FDTS, Fixed Discharge Temperature Sensor)

It is the means to measure the refrigerant temperature of compressor outlet which is used as the data for control of fixed compressor.

IV 37

IV. Outdoor unit

6. Refrigerant system diagram

flow direction of refrigerant

bypass flow of protection actuated

IV 38

(2) ??????080/100??????

fan

motor

solenoid valve (HGBV)

capillary tube

accumulator

flow direction of refrigerant

bypass flow of protection actuated

IV 39

IV. Outdoor unit

6.Refrigerant system diagram

(3)Main parts status

1) Digital scroll compressor

The variable capacity type compressor to control the capacity up to 10 ~ 100% with 19 steps

2) Accumulator

To prevent the incoming of the liquid refrigerant to the compressor (prevention of liquid back).

3) Receiver

To reduce the noise by flowing the high pressure liquid refrigerant to the high pressure pipe and to control the amount of refrigerant during the individual operation of indoor unit.

4) Solenoid valve (PWM)

It is installed at the top of digital scroll compressor and at the low pressure pipe, which is used for operating the digital scroll compressor. When the valve is open, the digital scroll compressor keeps the state of unloading.

5) Solenoid valve (HGBV)

When the low pressure gets lower, the valve is open by the low pressure safety device. The valve is open in order to reduce the load at the start of compressor and when the system stops and then keep the balance of low pressure.

6) Solenoid valve (LBV)

When the compressor is overheated, it actuates to lower the temperature of compressor for stable operation.

7) Solenoid valve (VBV)

The valve is open in order to reduce the load at the start of compressor and when the system stops and then keeps the balance of low pressure.

8) High pressure switch

To stop the system for the system protection when the high pressure exceeds the set value.

9) Temperature sensor (DTS, Discharge Temperature Sensor)

It is the means to measure the refrigerant temperature of compressor outlet which is used as the data for control of compressor.

10) Temperature sensor (COS, Condenser Out Sensor)

When heating, used for defrost control by sensing outdoor heat exchanger temperature.

IV 40

11) Temperature sensor (OATS, Outdoor Air Temperature Sensor)

To measure the outdoor temperature which is used for the determination of start method.

12) Fixed scroll compressor

The fixed capacity type compressor.

13) 4-way valve (4-W/V)

It enables the change between cooling and heating by reversing the flow direction of refrigerant.

14) Electronic expansion valve (EEV)

By sensing suction temperature and low pressure, controls the suction super heat and mass flow of r efrigerant.

15) Check valve (C/V)

To reduce the loss of pressure at the electronic expansion valve while cooling and to prevent the over-load of the compressor.

16) SUC.S (Suction sensor)

To control EEV for optimized suction super heat to control over-heating at the electronic expansion valve by the temperature of the compressor suction part when heating.

17) OIL.S (Oil sensor)

To control EEV against liquid back and low dilution of oil to protect the compressor by measuring the tem- perature of oil used for controling SUMP at low temperature in cooling / heating mode.

18) Temperature sensor (FDTS, Fixed Discharge Temperature Sensor)

It is the means to measure the refrigerant temperature of compressor outlet which is used as the data for control of fixed compressor.

IV 41

(2) ??????080/100??????

IV 43

IV. Outdoor unit

8. Consideration for outdoor unit selection

8-1. Change of capacity depending on refrigerant piping length

(1) Change of cooling capacity

(2) Change of heating capacity

Example of a mark :

???

IV 46

8-2. Condition of operating restriction

(1) Cooling

(2) Heating

(3) Cautions for characteristics of heating capacity

IV 47

IV. Outdoor unit

9. Noise level

Octave band center freqency(Hz)

Octave band center freqency(Hz)

IV 48

Octave band center freqency(Hz)

Octave band center freqency(Hz)

IV 49

IV. Outdoor unit

10. Options

??? The discharge duct shall be bought suitable for the quantities of Fan.

IV 50

V. Installation

1. Product

1-1. Preparation for installation

When deciding on the location of the air conditioner with the owner, the following restrictions must be

taken into account.

(1) General

Do NOT install the air conditioner in a location where it will come into contact with the following elements:

???Combustible gases

???Saline air

???Machine oil

???Sulphide gas

???Special environmental conditions

If you must install the unit in such conditions, first consult your dealer.

V 2

1-2. Deciding on where to install the air conditioner.

(1)Indoor unit

???There must be no obstacles near the air inlet and outlet.

???Install the indoor unit on a ceiling that can support its weight.

???Maintain sufficient clearance around the indoor unit.

???Make sure that the water dripping from the drain hose runs away correctly and safely.

???The indoor unit must be installed in this way, that they are out of public access. (Not touchable by the users)

(2)Outdoor unit

???The outdoor unit must NEVER be placed on its side or upside down, as the compressor lubrication oil will run into the cooling circuit and seriously damage the unit.

???Choose a location that is dry and sunny, but not exposed to direct sunlight or strong winds.

???Do not block any passageways or thoroughfares.

???Choose a location where the noise of the air conditioner when running and the discharged air do not disturb any neighbours.

???Choose a position that enables the pipes and cables to be easily connected to the indoor unit.

???Install the outdoor unit on a flat, stable surface that can support its weight and does not generate any unnecessary noise and vibration.

???Position the outdoor unit so that the air flow is directed towards the open area.

???Maintain sufficient clearance around the outdoor unit, especially from a radio, computer,

stereo system, etc.

???If the outdoor unit is installed at a height, ensure that its base is firmly fixed in position.

???Make sure that the water dripping from the drain hose runs away correctly and safely.

??? This device must be installed according to the national electrical rules.

V 3

V. Installation

1. Product

V 4

6) Wall-mounted type

V 5

V. Installation

1.Product

7)Floor standing type

8) Ceiling type

V 6

(2)Outdoor unit

1)If there is no obstacle around the outdoor unit...

Unit : mm

???Max. height of obstacle

-Front side : 1500mm or less

-Air inlet side : 500mm or less

-Right/Left side : No limit

V 7

V. Installation

1. Product

1-4. Accessories

(1) 1-way cassette type

(2) 4-way cassette type

(3) Duct type (Low silhouette)

V 8

(4) Duct type (Built-in)

(5) Duct type (High pressure)

(6) Wall-mounted type

V 9

V. Installation

1.Product

(7)Floor standing type

(6) Ceiling type

V 10

1-5. Installation

(1) Indoor unit (Example; 4-way cassette type)

1)Place the pattern sheet on the ceiling at the spot where you want to install the indoor unit.

Note ??? Since the diagram is made of paper, it may shrink or stretch slightly due to temperature or humidity. For this reason, before drilling the holes maintain the correct dimensions between the markings.

V 11

V. Installation

1.Product

(2)Outdoor unit

The outdoor unit must be installed on a rigid and stable base to avoid any increase in the noise level and vibration, particularly if the outdoor unit is to be installed in a location exposed to strong winds or at a height, the unit must be fixed to an appropriate support(wall or ground).

1) Fix the outdoor unit with anchor bolts.

Note ??? The anchor bolt must be 20mm or higher from the base surface.

To prevent the unit against a wild animal or something, cover part after connecting the pipe.

Piping

V 12

2. Panel

2-1. 1-way cassette type

(1) Accessories

M4x12 M5x16 bolt (4) tapped screw

(6)

(2)Installation

1) Open the front grille by pushing tabs on the grille.

2) Remove safety clips to open the grille completely.

3) Attach the panel to the indoor unit temporarily with 6 screws, then adjust it not to leave a gap between the ceiling and the panel.

V 13

V. Installation

2. Panel

5)Open the electrical component box by removing screws, then connect cables between the electrical component box and the panel.

IMPORTANT ??? Be careful about the color of cables not so that they will be mixed up.

7) Reinstall the front grille.

V 14

2-2. 4-way cassette type

(1) Accessories

Air blocking kit

V 15

V. Installation

2. Panel

2-3. Duct type (Built-in)

(1) Accessories

Tapped screw Fixing bracket

(6)(1 or 2)

(2)Installation

1)Separate the front grille from the panel.

1-1 Push the lever of front grille right and left to lift it up and then open it.

1-2 Take out the safety clip at the both sides of front grille and separate the front grille.

2)Insert panel fixing screws(4EA or 5EA) and tighten them temporarily. Leave space of approx. 7~8mm between the screw and the indoor unit to insert the panel. Do not insert the screw into the rest of one or two hole(s) yet.

??????020/026/035??????

???Tighten 5 screws except one hole for fixing a bracket.

??????052/070??????

???Tighten 4 screws except two holes on right and left.

V 16

3)Attach the panel to the indoor unit, then push it to right or left to secure the panel. Narrow side of hole on the panel must be inserted between the screw and the indoor unit.

4)Adjust the location of panel so that there is no gap between the panel and ceiling, then tighten the screw completely.

5)Install the fixing bracket. Each air filter needs its own bracket.

??????020/026/035??????

???Fix 1 bracket to the rest hole on the panel with a supplied screw.

??????052/070??????

???Fix 2 brackets to two holes on right and left side of the panel with screws.

6)Reinstall the front grille.

??? The installation of front grille is in the reverse order of disassembly.

V 17

V. Installation

3. Connecting the indoor unit refrigerant pipe

V 18

Cutting/Flaring the Pipes

1) Make sure that you have the required tools available (pipe cutter, reamer, flaring tool and pipe holder).

2) If you wish to shorten the pipes, cut it with a pipe cutter, taking care to ensure that the cut edge remains at a 90?? angle with the side of the pipe. Refer to the illustrations below for examples of edges cut correctly and incorrectly.

3)To prevent any gas from leaking out, remove all burrs at the cut edge of the pipe, using a reamer.

4)Slide a flare nut on to the pipe and modify the flare.

5)Check that the flaring is correct, referring to the illustrations below for examples of incorrect flaring.

6)Align the pipes and tighten the flare nuts first manually and then with a wrench, applying the following torque.

??? In case of welding the pipe, you must weld with nitrogen gas blowing.

V 19

V. Installation

4. Drain hose installation (Example;4-way cassette type)

Care must be taken when installing the drain hose for the indoor unit to ensure that any condensate water is correctly drained outside.

CAUTION

Check that the indoor unit is level with the ceiling by using the leveler.

1/100 or more

V 20

Note ??? If a concentrated drain hose is installed, refer to the figure below.

Concentrated drain hose

Testing the drainage

You should test the drainage after completing the installation.

Prepare a little water about 2.0 liter.

1)Remove two screws on the cover water supply intake and pull out the cover.

Cover water supply intake

2) Pour water into the indoor unit as shown in figure.

Note ??? If you do not pour water inside the water supply intake, water may spill from the indoor unit.

3) Confirm that the water flows out through the drain hose.

Note ??? You can check the drainage only when the air conditioner is in cool mode.

4) Reassemble the cover drain pump and the screws.

Note ??? For installation of another drain hose, refer to an appropriate installation manual.

V 21

V. Installation

5. Drain pump installation-optional

(Example;Low-silhouette duct type)

5-1. Accessories

5-2. Accessories

(1) Connect the cable to the electrical component box as shown at the figure.

Note ??? Connect the drain pump cable to yellow terminal(CN74) and the float switch to black terminal(CN51).

V 22

6. Wiring

???Caution

???All wiring and parts shall be the rated ones.

???For details of wiring, refer to the circuit diagram attached onto the outdoor unit.

???The electrical work shall be performed by the qualified electrical worker.

???The circuit diagram for wiring shows only the concept and so the details for actual work is not described.

???This air conditioner is consist of 3 phase 4 wire system and so the main circuit breaker to block the power shall be installed in the integrated manner.

???Be sure to install the circuit breaker and fuse on power cable of each equipment.

???Connect the wires to the terminals without excessive force and arrange the wires with the cover or other parts so that it may not be loosened. If it is loosened, it may cause the overheating, electrical shock and fire.

6-1. Overall system configuration (example)

V 23

V. Installation

6. Wiring

6-2. Cable specification for outdoor unit

6-3. Connection cord specification

??? The power supply cable shall be connected to the power supply terminal and shall be fixed with clamp as in the following figure.

???The unbalance of power shall be within 2% of power supply rating.

-If the power supply unbalance is great, the lifetime of condenser is shortened.

-If the power supply unbalance exceeds 4%, the indoor unit stops and error mode displays.

6-4. Wiring diagram

indoor unit

V 24

6-5. Connection cord wiring diagram

Outdoor unit

??? The communication cable shall be wired as follows:

???When the communication cable exceeds the specified length, the operation of air conditioner may be impossible due to the trouble of communication between indoor and outdoor unit.

-Maximum wire length : less than 120 m

-Total wiring length : less than 240 m

-Maximum communication branch cable: 10 branches

6-6. Power wiring and communication wiring configuration

???Be sure to run the power supply cable and communication cable through the electrical conduit as shown in the right side figure.

???Select the power supply cable from the left and

V 25

V. Installation

6. Wiring

6-7. Communication cable connection

(1) Correct connection

Outdoor unit

F1 F1

F2 F2

F1 F1

F2 F2

F1 F1

F2 F2

F1 F1

F2 F2

F1 F1

F2 F2

F1 F1

F2 F2

V 26

(2)Typical wiring error

1)Star wiring connection to some of the indoor units

Outdoor unit

F1 F1

F2 F2

F1 F1

F2 F2

F1 F1

F2 F2

F1 F1

F2 F2

F1 F1

F2 F2

F1 F1

F2 F2

V 27

V. Installation

6. Wiring

2) Star wiring connection to every indoor units

Outdoor unit

F1 F1

F2 F2

F1 F1

F2 F2

F1 F1

F2 F2

F1 F1

F2 F2

F1 F1

F2 F2

F1 F1

F2 F2

V 28

3) Reverse wiring between indoor and outdoor units

Outdoor unit

F1 F1

F2 F2

F1 F1

F2 F2

F1 F1

F2 F2

F1 F1

F2 F2

F1 F1

F2 F2

F1 F1

F2 F2

V 29

V. Installation

6. Wiring

4) Disconnection between indoor and outdoor units

Outdoor unit

F1 F1

F2 F2

F1 F1

F2 F2

F1 F1

F2 F2

F1 F1

F2 F2

F1 F1

F2 F2

V 30

5) Reverse wiring between indoor units

Outdoor unit

F1 F1

F2 F2

F1 F1

F2 F2

F1 F1

F2 F2

F1 F1

F2 F2

F1 F1

F2 F2

V 31

V. Installation

6. Wiring

6) Disconnection between indoor units

Outdoor unit

F1 F1

F2 F2

F1 F1

F2 F2

F1 F1

F2 F2

Disconnection

F1 F1

F2 F2

F1 F1

F2 F2

F1 F1

F2 F2

V 32

7. Piping and refnet joint selection

7-1. Refrigerant piping system diagram

Example) in case of 6 indoor units installation

7-2. Piping selection

???distance between the farther indoor unit and outdoor unit :

V 33

V. Installation

7. Piping and refnet joint selection

7-3. Refnet joint selection

(1) Selection method of first refnet joint from the outdoor unit

The first refnet joint (joint A) from the outdoor unit shall be selected according to the outdoor unit model.

(2) Other refnet joint selection method

The refnet joint except the first one shall be selected according to the capacity of indoor unit installed.

V 34

8. Charge/recovery of refrigerant

8-1. Refrigerant charging

(1)Outdoor unit is charged with refrigerant when being delivered but additional refrigerant shall be charged for some part of system.

(2)After completion of vacuum, keep the following instructions to fill the refrigerant into the service port.

1)Check whether the stop valve of liquid and gas side are completely closed.

2)Fill the specified amount of refrigerant from the liquid stop valve service port at the compressor stopped.

??? If the length of refrigerant piping is longer than specified, be sure to charge the refrigerant.

???Do not charge the refrigerant from the gas side service port.

???If the refrigerant charging is not done in the above method, press the refrigerant charging button (key2) on outdoor unit PCB to operate the unit. After approximately 30 minutes, charge the specified amount of refrigerant to the service port of gas stop valve. If unavoidable, check the pressure table as per the outdoor temperature to charge the refrigerant.

Outdoor unit

gas side stop valve (service port)

liquid side stop valve (service port)

R

22

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V. Installation

8. Charge/recovery of refrigerant

8-2. Additional refrigerant amount calculation method

(1)The amount of refrigerant filled in the outdoor when the product is delivered (on the base of piping 10 m)

(2)Additional amount of refrigerant as per the pipe diameter and length (liquid pipe based)

(3) Additional refrigerant amount calculation method

Additional refrigerant amount = 12.70 (liquid pipe /high pressure pipe diameter) x 120g/m

+9.52 (liquid pipe /high pressure pipe diameter ) x 80g/m

+6.35 (liquid pipe /high pressure pipe diameter ) x 50g/m

(4)Example of additional refrigerant amount calculation

??? Additional amount of refrigerant = additional amount of refrigerant as per the total pipe length

??? Arrangement: liquid pipe diameter -gas pipe diameter - pipe length

14400W

21600W

Additional amount of refrigerant =(??12.70 liquid pipe lengthX120g/m)+(??9.52 liquid pipe lengthX80g/m)+

(??6.35 liquid pipe lengthX50g/m)

=(20mX120g/m)+(25mX80g/m)+(25mX50g/m) =5650g-??

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8-3. Recovery of refrigerant

(1)Close the service valve of liquid side and then press the refrigerant recovery button on outdoor PCB.

(2)When the low pressure is getting lower enough, close the service valve to press the refrigerant recovery button again or press key 3. Pressing the button stops the compressor.

(3)When total amount of refrigerant in the pipe is more than 15kg, the refrigerant may not be recovered completely even though the refrigerant recovery (pump down) is performed. So care must be taken.

(4)The pump down time shall not exceed 5 minutes.

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V. Installation

9.Testing operation

???Cautions for operation

???Put the power 6 hours before initial operation so that the crank case heater may be heated.

???When doing the retry of initial operation after main power off, start the operation 2 and half hours after power on.

???If the heater is not heated, the operation can not be started for 2 hours after power on for the protection of compressor. (Ch displays on the PCB display part at the time.)

(1)Check the power between outdoor unit and distribution board. (3 phase tester recommended)

???Compressor power : L1(R) L2(S) L3(T) - red white black (Care must be taken so that the color and order may not be changed.)

???220V power: L N

(2)Check the indoor unit

??? Check whether the power source of each indoor unit and the communication cables are correctly connected.

(Communication cable marked as F1, F2)

-If the communication cable is changed each other with the power cable, it might cause the damage to PCB.

-There is no color marking on the power supply cable but be sure to check the color of communication cable since the cable has the polarity.

???Check whether the addresses are correctly assigned to each indoor unit.

-The address switch is available from ???0???.

-The address of each indoor unit shall be assigned differently.

???Check whether the connections for temperature sensor, electronic expansion valve and drain pumps are all connected.

(3)Check the outdoor unit

??? Set the numbers of indoor unit on the outdoor unit PCB.

-If there are all 3 outdoor units, set so that the arrow mark is shown on ???3???.

???Check on the outdoor unit PCB whether the outdoor unit capacity code and Dip switch are correct. (It is delivered with the setting in factory and so there is not necessary to set separately).

(4)Once the check of power supply, indoor and outdoor unit is completed, connect to the outdoor unit the PC in which the A/S program is installed, and then put the power of the outdoor unit on.

(5)Once the power is on to the outdoor unit, the outdoor performs the tracking to check the connected indoor unit and options.

-At the time the left side of outdoor unit PCB display part shows the detection of communication response with 0 - F address and if there comes the response, the address of indoor unit responded displays on the right side display.

(6)Once the tracking of approximately 20 seconds is completed, the following steps are proceeded when comparing the numbers of indoor units set in PCB and those responded through communication, if they are same, but if they are not same, E2 Error displays on the PCB display.

-For E2 error, check whether the indoor unit set switch on PCB is correct or whether the installation and address setting is correct if there is an indoor unit not responding.

-Press Key3 after check and retry the Tracking.

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(7)If Ch displays on the PCB display after tracking, it is the state of compressor not preheated, which means the operation is possible after 2 and half hours. (Supply the power and preheat the compressor).

(8)If the preheating of compressor is completed, the communication is performed between indoor unit connected and options. It is the normal at the time when the address on the right display is shown as many as shown on the left side display.

(9)Check through the PC connected with outdoor unit whether the data is correct from temperature sensor and electronic expansion valve.

(10)Once the above process is all completed, press the test operation button on PCB.

-Check before pressing key whether all the service valves are open.

(11)Check the high and low pressure through the manifold gauge .

-Refer to the pressure table separately provided as per the outdoor temperature and piping length.

-Since the high pressure and low pressure varies at the initial operation, take the input data 20 minutes after the start of compressor at least.

-Since the compressor may reciprocate if there is loud noise or if the low and high pressure do not vary, check the power L1(R)-L2(S)-L3(T) from (1). If there is not trouble in the power but the problems continues to occur, check the wire connected to the compressor.

???Neglect the RCS on the compressor power incoming and check the order of T1-L1(R)-red, T2-L2(S)-white, T3-L3(T)-black.

(12)Check through the PC connected to the outdoor unit.

-Check the temperature, RPM, power and opening of electronic expansion valve for each indoor unit.

-Check whether the compressor discharge, condenser outlet temperature, outdoor fan are operated.

(13)During the test operation, check whether error is shown on the outdoor PCB.

-Test operation shall be continued for more than 2 hours continuously at least.

-After the long initial operation of outdoor unit, check whether the condensate is well treated.

(14)Press again the test button to complete the test operation. (Operation completion of whole rooms)

(15)If the test operation mode is completed, operate one indoor unit only in cooling mode.

-The operation shall be continued for more than 30 minutes for one unit and then check the temperature of indoor unit connected through PC to check the leak of electronic expansion valve. If there is no problem, put off the indoor unit which is operating and operate another indoor unit to check the electronic expansion valve leak as in the above manner.

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V. Installation

10. Cautions for refrigerant leaks

10-1. Introduction

The DVM system, like most other air conditioning systems, uses R-22 as its refrigerant. R-22 itself is an entirely safe non-toxic, non-combustible refrigerant but care must nevertheless be taken to ensure that the air conditioning facilities are installed in a room which is sufficiently large to avoid a *dangerous concentration of refrigerant gas in the unlikely event of a serious leak in the system.

* Dangerous concentration

Dangerous concentration means the maximum concentration of CFC gas which can be dealt quickly and with without damage to the person in the case of a leak of refrigerant into the air. The unit of measurement of the dangerous concentration is kg/m3 (the weight in kg of CFC gas in 1m3 of air) for ease of calculation.

Dangerous concentration of R-22: 0.3kg/m3

Indoor unit

Room where refrigerant leak has occurred (Outflow of all the refrigerant in System No. 1)

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10-2. Procedure for checking dangerous

??? Concentration

Check the dangerous concentration in accordance with steps 1~4 below and take whatever action is necessary.

(1) Calculate the amount of refrigerant(kg) charged to each system separately.

Note ??? Where a single refrigerant facility is divided into 2 entirely independent refrigerant systems then use the amounts of refrigerant with which each separate system is charged.

(2)Calculate the smallest room volume(m3)

In a case like the following calculate the volume of (1), (2) as a single room or as the smallest room. 1) Where there are no smaller room divisions

Outdoor unit

Indoor unit

2)Where there is a room division but there is an opening between the rooms sufficiently large to permit a free flow of air back and forth. (Where there is an opening without a door or where there are openings above and below the door which are each equivalent in size to 0.15% or more of the floor area.)

Outdoor unit

Indoor unit

Opening between rooms

Partition

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V. Installation

10. Cautions for refrigerant leaks

3)Where there is a gas leak detection alarm device linked to a mechanical ventilator in the smallest room then the next smallest room will become the measurement target.

Outdoor unit

Ventilator

Indoor unit

(3)Calculate the refrigerant density using the results of the calculations in steps 1 and 2 above.

If the result of the above calculation exceeds the dangerous concentration level then make similar calculations for the second the third smallest room and so on until the result falls short of the dangerous concentration level.

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(4)Dealing with situations where the result exceeds the dangerous concentration level.

Where the installation of a facility results in a concentration in excess of the dangerous concentration level then it may be necessary to revise the system design to some extent or else take one of the fol- lowing courses of action:

<Action 1> Making openings which will allow the air to flow freely into the room.

Make openings above and below the door which are each equivalent in size to 0.15% or more of the floor area or make a doorless opening.

<Action 2> Fit a mechanical ventilator linked to a gas leak detection alarm device.

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DB98-03759A(1)

2002.03.