EEV-KIT For 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 Sensors Thi-A ： Suction Air Temp. Sensor Thi-AF ： Discharge Air Temp. Sensor Thi-R1,R2,R3 ： Heat exchanger Temp. Sensor Thi-R1 Thi-R2 Thi-R3 Thi-AF Thi-A EEV-Control Unit ＦＡ Ｎ EEV-Set Strainer To other I/U RC There is a case that other I/U exists. 01 O/U Address O/U Address: 01 I/U Address: 01 Signal line EEV-Control BOX Sensors （ 5pcs ） Thi-A Thi-R1 Thi-R2 Thi-R3 Thi-AF EEV-KIT EEV-Control Unit EEV-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 by this connecting method. In such case, be sure to use the EEV-KIT for multiple refrigeration system. 3. System B Thi-R1 Thi-R2 Thi-R3 Thi-AF Thi-A ＦＡ Ｎ EEV-Set 01(02) EEV-Control Unit O/U Address I/U Address RC Signal line Configuration diagram EEV-Control BOX Sensors （ 5pcs ） Thi-A Thi-R1 Thi-R2 Thi-R3 Thi-AF EEV-KIT EEV-Control Unit EEV-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 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 Function of EEV-Control Unit 4.1 SW1-SW4 (Address setting) 4.2 SW6 (Model capacity selection) 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 Function of EEV-Control Unit 4.3 SW7 (Function setting) 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 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 Function of EEV-Control Unit 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: ℃） *1 For changing to OA processing mode, set the No.17 （ PRESSURE CONTROL) of indoor unit function set by remote controller. ★ factory default

Preliminary information, all of contents are subject to final confirmation by MHI Function of EEV-Control Unit 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: ℃） ★ 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 Function of EEV-Control unit 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) －２－２ ＋1＋1 －1－1 ＋２＋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) －1－1 ＋ 0.5 － 0.5 ＋1＋1 Fan mode Automatic operation B Automatic operation A Automatic operation C ★ factory default