EEV-KITEEV-KITFor Single refrigeration systemFor Single refrigeration system

Preliminary information, all of contents are subject to final confirmation by MHI 2

Contents 1. Single refrigeration system 2. System A (one heat exchanger)3. System B (multiple heat exchangers)4. Function of EEV CONTROL UNIT　 4.1 SW1-4 (Address setting)　 4.2 SW6 (Model capacity selection)　 4.3 SW7　 4.4 Switching return/supply air temp. control　 4.5 Supply air temp. control in cooling　 4.6 Supply air temp. control in heating　 4.7 Automatic operation control

Preliminary information, all of contents are subject to final confirmation by MHI 3

1. Single refrigeration system • Single refrigeration system is the system that EEVKIT6-E-C is built into one refrigeration system.• There are 2 types of EEV-KIT system to be built into the

single refrigeration system. One is “System A” and the other is “System B”.• System A is; The system that only one set of EEV-KIT is built into one indoor unit with only one heat exchanger. This system can be applied to the indoor unit whose capacity is up to 10HP. • System B is; The system that multiple EEV-KIT are built into one indoor unit with multiple heat exchangers. This system can be applied to the indoor unit whose capacity is up to 48HP.

Preliminary information, all of contents are subject to final confirmation by MHI 4

2. System A Configuration diagram

SensorsThi-A： Suction Air Temp. SensorThi-AF： Discharge Air Temp. SensorThi-R1,R2,R3： Heat exchanger Temp. Sensor

Thi-R1

Thi-R2 Thi-R3Thi-AFThi-A

EEV-Control Unit

ＦＡＮ

EEV-Set

StrainerStrainer

To other I/U

RC

There is a case that other I/Uexists.

01

O/U Address

O/U Address: 01I/U Address: 01

Signal line

EEV-Control BOX

Sensors （ 5pcs）

Thi-AThi-R1

Thi-R2Thi-R3

Thi-AF

EEV-KIT

EEV-Control UnitEEV-Set

Strainer

EEV

Strainer

EEV-Control ASSY

Preliminary information, all of contents are subject to final confirmation by MHI 5

2. System A • One EEV-KIT can control one EEV and its maximum

capacity is 10HP (equivalent to P280).• Capacity setting of EEV-Control Unit shall be done

according to the required capacity. P280 is default setting.• All wirings for 5 sensors, EEV-coil, operation command to

indoor fan motor, remote controller and superlink signal line shall be connected to the EEV-Control Unit.

• Both of return/ supply air temp. sensors Be sure to check whether the temperature can be detected correctly.

• The heat exchanger temp. sensors Be sure to confirm whether the sensors detect the correct

temperature. Wrong mounting of sensor may cause trouble of the compressor.

Usage note #1

Preliminary information, all of contents are subject to final confirmation by MHI 6

2. System A • Select a suitable MHI genuine EEV-Set according to the

required capacity. • The indoor fan motor, overcurrent relay for fan motor and

magnet contactor for fan motor should be provided locally. Be sure to check in advance whether the anomaly

detection can be made by inputting the overcurrent anomaly signal from the fan motor to the EEV- Control Unit.

The power supply to indoor fan motor shall be provided independently, not from the EEV-Control Unit side.

• The remote controller (optional part for KX system: RC-E4) shall be provided separately, if necessary.

• Central control can be use for controlling together with the indoor units.

• The limitations of address setting, capacity selection and length of superlink line are same as KXE6. (See technical manual of KXE6 for details)

Usage note #2

Preliminary information, all of contents are subject to final confirmation by MHI 7

In case of multiple refrigeration system, it can not control bythis connecting method. In such case, be sure to usethe EEV-KIT for multiple refrigeration system.

3. System B

Thi-R1Thi-R2Thi-R3

Thi-AF

Thi-A ＦＡＮ

EEV-Set

01 (02)

EEV-Control Unit

O/U Address

O/U AddressI/U Address 04

01

0301

0201

0101

RC

Signal line

Configuration diagram

EEV-Control BOX

Sensors （ 5pcs）

Thi-AThi-R1

Thi-R2Thi-R3

Thi-AF

EEV-KIT

EEV-Control UnitEEV-Set

Strainer

EEV

Strainer

EEV-Control ASSY

Preliminary information, all of contents are subject to final confirmation by MHI 8

3. System B Usage note #1

• Unlike system A, system B is the system that multiple EEV-KIT are built into one AUH, and the outdoor unit KXE6 shall be applied.

However in this system, multiple refrigeration system can not be applied to one indoor unit. In such case, be sure to use the EEV-KIT for multiple refrigeration system.

• Wiring connection method for each EEV-KIT is basically same as that for system A.

All of return/supply air temp. sensors for all EEV-KIT shall be placed and connected individually.

However the wiring for the command signal of indoor fan motor and remote controller should be connected to the one of EEV-Control Unit whichever you like, and the wiring of remote controller shall be connected to all EEV-Control Unit.

Preliminary information, all of contents are subject to final confirmation by MHI 9

3. System B Usage note #2

• Superlink line shall be connected among all EEV-Control Units and the outdoor unit according to the rule of KXE6 system.Set an address to each EEV-Control Unit.

• When controlling this indoor unit together with the indoor units in another refrigerant systems by central control, be sure to connect the superlink line to the central control through superlink adaptor in order to prevent the multiple addresses from existing in one indoor unit.

Preliminary information, all of contents are subject to final confirmation by MHI 10

4. Function of EEV-Control Unit

SW7: For function setting (See item 4.3)

SW1-SW4 and SW6 can be set according to the required specifications

SW1-SW4： For address setting

(See item 4.1)

( Same method as the KXE6 indoor unit)

SW6: For capacity selection (See item 4.2)

SW5: For address setting, etc. (See item 4.1)

Preliminary information, all of contents are subject to final confirmation by MHI 11

4. Function of EEV-Control Unit 4.1 SW1-SW4 (Address setting)

P22 P28 P56 P71 P140 P224 P280

SW6-1 OFF ON OFF OFF OFF OFF ON

SW6-2 OFF OFF ON OFF OFF ON ON

SW6-3 OFF OFF ON OFF ON ON ON

SW6-4 OFF OFF OFF ON ON ON ON

Model capacity

4.2 SW6 (Model capacity selection)

ContentsSW1 Rotary switch (Blue) Indoor address (10's)SW2 Rotary switch (Blue) Indoor address (1's)SW3 Rotary switch (Green) Outdoor address (10's)SW4 Rotary switch (Green) Outdoor address (1's)

SW5-2 Dip switch Indoor address (100's) *

Switch

Set address in the same manner as KX system

Set the model capacity according to the heat exchanger

capacity.

* OFF: 100’s=0 ON : 100’s=1

SW5-1 should be kept OFF.

Preliminary information, all of contents are subject to final confirmation by MHI 12

4. Function of EEV-Control Unit 4.3 SW7 (Function setting)

No. Function ON/OFF Setting Remarks

★OFF Normal

ON Test run

★OFF

ON

★OFF Return air temp. control

ON Supply air temp. control

★OFF

ON

Test run for drain motorsame function forKXE6 indoor unit

ReservedSW7-2

SW7-1

Keep OFF

See item 4.3.4for details

Switching refrigerant flowvolume control method

ReservedSW7-4

SW7-3

Keep OFF

Note:

1. shows factory default.★

2. SW7-2 and SW7-4 should be kept OFF.

Preliminary information, all of contents are subject to final confirmation by MHI 13

4. Function of EEV-Control Unit 4.4 Switching return/supply air temp. control• Be sure to apply the attached return air temp. sensors and supply air temp. sensors at suitable position to

detect the temperature correctly and to make the detected temperature difference between sensors

minimized.

• When SW7-3 is OFF, it will become return air temp. control and EEV is controlled to keep the super heat constant.

• When SW7-3 is ON, it will become supply air temp. control and EEV is controlled to keep the supply air temperature constant.

Preliminary information, all of contents are subject to final confirmation by MHI 14

4. Function of EEV-Control Unit 4.3.5 Supply air temperature control in cooling ・ The set temperature of supply air for supply air temperature 　 control is fixed by the set value of target low pressure.・ Factory default is shown in following table.

・ The set temperature can be changed ±3degC at maximum by using No. 01and 08 of I/U function set by remote controller. (Set temp. range: Air conditioning mode :12-18 , ℃ OA processing mode: 22-28℃）

In Cooling Air conditioning mode OA processing mode *1Set temperature 15℃ 25℃

Target low pressure (LP≒ 0.65-0.76MPa) (LP≒ 0.65-076MPa plus 0.22MPa)

*1 For changing to OA processing mode, set the No.17 （ PRESSURE CONTROL) of indoor unit function set by remote controller.

No. Function Display on R/C Function Meaning

Valid Minus★ Invalid ★Plus

★NO OFFSET ★NO OFFSETOFFSET +1.0℃ OFFSET ± 1.0℃OFFSET +2.0℃ OFFSET ± 2.0℃OFFSET +3.0℃ OFFSET ± 3.0℃

Actual meaning

SwitchingPlus/Minus

Supply airtemperature

offset amount

Remote controller function

Auto Filter Cleaning

SP OＦＦＳＥＴ08

01 ★ factory default

Preliminary information, all of contents are subject to final confirmation by MHI 15

4. Function of EEV-Control Unit 4.3.6 Supply air temp. control in heating ・ The set temperature of supply air for supply air temp. control is fixed.・ The set temp. and target high pressure in air conditioning mode is different from those in OA processing mode.・ Factory default is shown in following table.

・The set temperature can be changed ±4degC at maximum by using No. 09 of I/U function set by remote controller. (Set temp. range: Air conditioning mode:36-44 , ℃ OA processing mode: 21-29℃）

In Heating Air conditioning mode OA processing mode *1

Set temperature 40℃ 25℃

Target high pressure (HP≒ 2.75MPa) (HP≒ 1.77MPa)

No. Function Display on R/C Function Meaning

OFFSET +2.0℃ OFFSET +4.0℃OFFSET +1.5℃ OFFSET +3.0℃OFFSET +1.0℃ OFFSET +2.0℃★NO OFFSET ★NO OFFSETOFFSET -1.0℃ OFFSET -2.0℃OFFSET -1.5℃ OFFSET -3.0℃OFFSET -2.0℃ OFFSET -4.0℃

Actual meaningRemote controller function

RETURN AIRTEMP.

09Supply air

temperatureoffset amount

★ factory default

*1 For changing to OA processing mode, set the No.17 （ PRESSURE CONTROL) of indoor unit function set by remote controller.

Preliminary information, all of contents are subject to final confirmation by MHI 16

4. Function of EEV-Control unit 4.3.7 Automatic operation control・ Operation mode (Cooling, Fan, Heating) can be changed automatically by detecting the difference between set temperature and return air temperature.

・ The temperature to change operation mode can be set by using remote controller function setting No.11 as follows.

Increase temp.

Decrease temp.

Heating mode

Cooling mode

▲Set point Ts)

－２

＋1

－1

＋２

Fan mode

Heating mode

Cooling mode

▲Set point (Ts)

－ 1.5 ＋0.5

－0.5

＋1.5

Fan mode

Heating mode

Cooling mode

▲Set point (Ts)

－ 1 ＋0.5

－0.5

＋ 1

Fan mode

Automatic operation BAutomatic operation A Automatic operation C

No Function Display on R/C

★NO VENT ★Automatic operation A

VENT LINK Automatic operation B

NO VENT LINK Automatic operation C

Actual meaning

11 VENT LINK SET

Remote Controller function

★ factory default