EEV-KIT General Information

Preliminary information, all of contents are subject to final confirmation by MHI 2 Contents 1. What it EEV-KIT 2. What is the direct expansion type air handling unit （ DX AHU ） 3. Feature of EEV-KIT 4. Usage note 5. Composition of EEV-KIT and component formation 6. Selection standard of heat exchanger

Preliminary information, all of contents are subject to final confirmation by MHI 3 1. What is EEV-KIT EEV-KIT is the control kit for operating the locally provided AHU and/or fan coil unit with direct expansion heat exchanger coils in connection with KXE6 system. EEV-KIT is composed of, EEV-Control ASSY and EEV-Set. EEV-Control ASSY: Following 2 types EEV-Set: Select from following 3 types according to the coil capacity ＊ Connectable refrigeration system is one system only. In case that the refrigeration system is multiple, be sure to use the EEV-Control ASSY for multiple refrigeration system. EEV-Control BOX Sensor （ 5pcs ） Thi-A Thi-R1 Thi-R2 Thi-R3 Thi-AF EEV-Set Strainer ＥＥＶ Strainer ＥＥＶ－ＫＩＴ EEV-Control Unit EEV-Control ASSY

Preliminary information, all of contents are subject to final confirmation by MHI 4 2. What is the direct expansion type air handling unit system 直膨エアハン 3 Available to connect multiple refrigeration systems (Max. 8 systems) to one air handling unit 2 Applied direct expansion type coils for heat exchanger in the AHU 1 Applied air cooled type heat pump outdoor unit for heat source Exhaust air fan Supply air fan Total heat exchanger Nonwoven filter Control box Cell type filter VAV or CAV is available Direct expansion type coil Water evaporating type humidifier Outdoor unit Return Air Supply Air (Cool/Heat) Exhaust Air Outdoor Air Direct expansion type Air handling unit System feature Max. capacity ＝１０８８ kW （ 136kW×8) ： cooling capacity

Preliminary information, all of contents are subject to final confirmation by MHI 5 3. Feature of EEV-KIT EEV-KIT is applied the controlling technology of KXE6. Accordingly it is able to connect to the superlink system through superlink adaptor. Remote controller for KXE6 can be used. Operation command to the indoor fan is transmitted from EEV-Control Unit. Power source for indoor fan motor should be provided separately. Switching between return air temperature control and supply air temperature control is available.

Preliminary information, all of contents are subject to final confirmation by MHI 6 4. Usage note Be sure to apply the 2 temperature sensors for detecting return/supply air temperature and the 3 heat exchanger temperature sensors for detecting entrance, intermediate and exit temperature of the heat exchanger. Be sure to check whether the sensors can detect the temperatures correctly. DX heat exchanger is designed and produced locally according to the local requirement. However be sure to follow MHI’s selection standard. If using EEV-KIT, be sure to submit the Check Sheet prepared by MHI after filling in all the necessary items. Otherwise you may not have any technical support for after sales service from MHI.

Preliminary information, all of contents are subject to final confirmation by MHI 7 5. Composition of EEV-KIT and component formation 5.1. EEV-CONTROL ASSY Model A: EEVKIT6-E-M (Master EEV-Control ASSY) Note 1.This control unit is used for multiple refrigeration system only In case of multiple refrigeration system, this control unit must be used as Master EEV-Control.

Preliminary information, all of contents are subject to final confirmation by MHI 8 5. Composition of EEV-KIT and component formation 5.1. EEV-CONTROL ASSY Model B: EEVKIT6-E-C (EEV-Control ASSY or Slave EEV-Control ASSY) Note 1.This control unit is used for single refrigeration system (EEV-Control ASSY) and for multiple refrigeration system (as Slave EEV-Control ASSY) 2.In case of multiple refrigeration system use, ② -1 and ② -2 are not used. 3.Capacity setting at factory default is 280. Please change setting to the required capacity, if it is different. 4.Number of Pcs shown in the above table is for one set of heat exchanger.

Preliminary information, all of contents are subject to final confirmation by MHI 9 5. Composition of EEV-KIT and component formation ① -1 CONTROL UNIT ( for multiple refrigeration system only) Indoor fan motor operation command Signal line Remote controller line Master control PCB Power line *1 Single phase V (50Hz ) * １） The power for indoor fan motor is not included Sensor for supply air Sensor for return air Terminal block for optional input/output signal （ For CnT2 and CnN ） Terminal block for signal cable and remote controller cable Terminal block for power cable PCH501A017AB

Preliminary information, all of contents are subject to final confirmation by MHI Composition of EEV-KIT and component formation ① -2 CONTROL UNIT (Common use for single and multi system ) Indoor fan motor operation command* (*for single system only) Signal line Remote controller line* (*for single system only) Control PCB Power line *1 Single phase V (50Hz) * １） The power for indoor fan motor is not included Sensor for supply air* Sensor for return air* (*for single system only) Terminal block for signal cable and remote controller cable* (*for single system only) Terminal block for power cable Sensor for heat exchanger Coil for EEV PCH501A017L

Preliminary information, all of contents are subject to final confirmation by MHI Composition of EEV-KIT and component formation ② SENSOR ASSY : Return/Supply air sensor ② -1 Part No. of return air sensor ： PCH551A010 Black Blue Color tape for discrimination Black ② -2 Part No. of supply air sensor ： PCH551A011 Yellow

Preliminary information, all of contents are subject to final confirmation by MHI Composition of EEV-KIT and component formation ③ SENSOR ASSY : Heat exchanger temperature sensor Part No. of heat exchanger sensor ： PCH551A012 Color tape for discrimination Sensor part Connector part Black Gray Yellow Red Yellow

Preliminary information, all of contents are subject to final confirmation by MHI Composition of EEV-KIT and component formation ④ SPRING, LEAF Leaf Spring Sensor Holder * Heat Exchanger Temp. Sensor Discrimination Tape With/Without Mounting Method of Heat Exchanger Temp. Sensor * Sensor Holder : Provided locally PSA941F001

Preliminary information, all of contents are subject to final confirmation by MHI Composition of EEV-KIT and component formation 5.2. EEV-SET Note 1. Please select suitable components according to the required capacity. 2. Number of Pcs shown in the above table is for one set of heat exchanger. 3. Number of Pcs in ( ) is just for reference. These parts are included in VALVE, BODY (EXP) ASSYs respectively.

Preliminary information, all of contents are subject to final confirmation by MHI Composition of EEV-KIT and component formation ⑤ VALVE, BODY (EXP) ASSY : Electronic Expansion Valve ASSY ⑤ -1 PCH387F018 (for EEV6-71-E)

Preliminary information, all of contents are subject to final confirmation by MHI Composition of EEV-KIT and component formation ⑤ VALVE, BODY (EXP) ASSY : Electronic Expansion Valve ASSY ⑤ -2 PCH387F019 (for EEV6-160-E) ⑤ -3 PCH387F019A (for EEV6-280-E) For EEV6-160-E For EEV6-280-E

Preliminary information, all of contents are subject to final confirmation by MHI Composition of EEV-KIT and component formation VALVE, BODY (EXP) : Electronic Expansion Valve EEV6-71-E (P22-P71) EEV6-160-E (P80-P160) EEV6-280-E (P224-P280) SSA387F047A SSA387F045 SSA387F049A

Preliminary information, all of contents are subject to final confirmation by MHI Composition of EEV-KIT and component formation STRAINER Part No. of Strainer ： SSA357A005B SSA357A005T SSA357A005AC

Preliminary information, all of contents are subject to final confirmation by MHI Composition of EEV-KIT and component formation ⑥ COIL, SOLENOID : EEV Coil For EEV6-71-E (P22-P71) For EEV6-160-E & EEV6-280-E (P80-P160) (P224-P280) SSA382F002SSA382F002A SSA382F210T (Solenoid coil) SSA382F210C (Solenoid coil) SSA971K116 (Insulation tube) PCH504A053 (Wiring assy) SSA971K116 (Insulation tube) PCH504A053 (Wiring assy) Note: Do not place the interconnector at the air passageway considering no water intrusion into the connector. If place it at the air passageway, be sure to protect it from water intrusion. Interconnector

Preliminary information, all of contents are subject to final confirmation by MHI Selection standard of heat exchanger 6.1 Required specifications #1 Dx AHU can be designed freely according to the required specifications. For designing the heat exchanger, following design information is required. Please refer to check sheet We pass you an example of a sample sheet

Preliminary information, all of contents are subject to final confirmation by MHI Selection standard of heat exchanger 6.1 Required specifications #2 Note: Especially the design condition of outdoor air temperature mentioned above is important for designing direct expansion type heat exchanger. Attention: Please select the heat exchanger, fan, EEV-KIT and etc. by clarifying the required specifications before designing. Please refer to check sheet We pass you an example of a sample sheet

Preliminary information, all of contents are subject to final confirmation by MHI 22 ・ Design standard for air conditioning unit (indoor air circulation type) and for OA processing unit (outdoor air intake type) are different. In case of OA processing unit, the design standard should be changed by selecting on the capacity basis (A) or on air flow volume basis (B). ・ Design standard for each unit type is shown as follows. 6. Selection standard of heat exchanger Design standard of heat exchanger *1. Temperature condition is JIS rated condition (See item 6-2)- ④ for details) *2. Temperature condition is JIS conformed condition (See item 5 for details) ・ The 3-row heat exchanger coil is design standard. (4-row or 6-row coil like water heat exchanger coil is not effective.) ・ The number of circuit is designed on 10 circuits per 25kW (equivalent to 10HP) of capacity basis withφ9.52 diameter of hair pin tube. Be sure to select the distributor in order not to make no temperature difference among the circuits Designing method of heat exchanger

Preliminary information, all of contents are subject to final confirmation by MHI Selection standard of heat exchanger Design standard of heat exchanger volume (Note) ・ The heat exchanger volume should be selected between the upper limit (blue line) and lower limit (red dotted line). ・ If the heat exchanger volume is too much, the required refrigerant volume is increased so that it will affect to the reliability of the system. Be sure to conform to MHI design standard of heat exchanger volume Designing method of heat exchanger

Preliminary information, all of contents are subject to final confirmation by MHI 24 ・ 3 sets of heat exchanger temp. sensors are required for each heat exchanger coil (indoor unit). ・ The heat exchanger temp. sensors are attached to EEVKIT6-E-C. ・ The mounting position of each heat exchanger temp. sensor is shown in following table. 6. Selection standard of heat exchanger 6. ３.1. Mounting standard of heat exchanger temp. sensors ・ The control range (accuracy) of heat exchanger temp. sensors (Thi-R1, -R2, -R3) is from 0 ℃ to 63(±2) ℃. ・ The usage range of heat exchanger temp. sensors is from -30 ℃ to +72 ℃ Guidelines of mounting heat exchanger temp. sensors

Preliminary information, all of contents are subject to final confirmation by MHI Selection standard of heat exchanger 6. ３.2. Mounting position of temperature sensors Supply air temperature sensor （ Thi- ＡＦ） Sensor on capillary tube （ Thi-R2 ） EEV Sensor on header （ Thi-R3 ） Distributor Return air temperature sensor （ Thi- Ａ） Sensor on U-bend （ Thi-R １） AIR 6.3. Guidelines of mounting heat exchanger temp. sensors