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

EEV-KITEEV-KITGeneral InformationGeneral 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


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

Type EEV6-71-E EEV6-160-E EEV6-280-E

Capacity P22 - P71 P80 - P160 P224 - P280

EEVKIT6-E-M EEVKIT6-E-C

Single 1unit-Multi units *Multi 1unit (for master) Multi units (for slave)

Refrigerationsystem

EEV-Control ASSY

＊ 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-AThi-R1

Thi-R2Thi-R3

Thi-AF

EEV-Set

Strainer

ＥＥＶ

Strainer

ＥＥＶ－ＫＩＴEEV-Control Unit

EEV-Control ASSY


2. What is the direct expansion type air handling unit system

直膨エアハン

33 Available to connect multipleAvailable to connect multiplerefrigeration systems (Max. 8 systems)refrigeration systems (Max. 8 systems)to one air handling unit to one air handling unit

22 Applied direct expansion type Applied direct expansion type coils for heat exchanger in coils for heat exchanger in the AHUthe AHU

11 Applied air cooled typeApplied air cooled typeheat pump outdoor unitheat pump outdoor unitfor heat sourcefor 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

SupplyAir

(Cool/Heat)

Exhaust Air

Outdoor Air

Direct expansion typeAir handling unit

System feature

System feature

System feature

Max. capacityMax. capacity ＝１０８８＝１０８８ kWkW （（ 136kW×8)136kW×8) ：： cooling cooling capacitycapacity


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.


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.



5.1. EEV-CONTROL ASSY

No. Part name Part No. Pcs. Remarks

①- 1 CONTROL UNIT PCH501A017AB 1 For multiple refrigerant system only

②- 1 SENSOR ASSY PCH551A010 1 Thi-A (for return air temp.)

②- 2 SENSOR ASSY PCH551A011 1 Thi-AF (for supply air temp.)

Model A: EEVKIT6-E-M (Master EEV-Control ASSY)

Note 1. This control unit is used for multiple refrigeration

system only.2. 2. In case of multiple refrigeration system, this

control unit must be used as Master EEV-Control.



5.1. EEV-CONTROL ASSY

No. Part name Part No. Pcs. Remarks

①- 2 CONTROL UNIT PCH501A017L 1

②- 1 SENSOR ASSY PCH551A010 1 Thi-A (for retern air temp.)

②- 2 SENSOR ASSY PCH551A011 1 Thi-AF (for supply air temp.)

③ SENSOR ASSY PCH551A012 1 Thi-R1, R2, R3

④ SPRING LEAF PSA941F001 3 For Thi-R1, R2, R3

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, -1 and -2 are not used. ② ②3. 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.



①-1 CONTROL UNIT ( for multiple refrigeration system only)

Indoor fan motoroperation command

Signal lineRemote controller line

Master control PCB

Power line *1 Single phase 220-240V (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 cablePCH501A017AB


5. Composition of EEV-KIT and component formation ①-2 CONTROL UNIT (Common use for single and multi system )

Indoor fan motoroperation command* (*for single system only)

Signal lineRemote controller line* (*for single system only)

Control PCB

Power line *1 Single phase 220-240V (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



② SENSOR ASSY : Return/Supply air sensor②-1 Part No. of return air sensor： PCH551A010

Black

Blue

Color tape for discrimination

Black

②-2 Part No. of supply air sensor：PCH551A011

Yellow



③ SENSOR ASSY : Heat exchanger temperature sensor

Part No. of heat exchanger sensor： PCH551A012

Color tape for discrimination

Sensor part Connector part

Black

Black

Gray

Yellow

Red

Yellow



④ SPRING, LEAF

Leaf Spring

Sensor Holder *

Heat Exchanger Temp. Sensor

Discrimination Tape With/Without

Mounting Method ofHeat Exchanger Temp. Sensor

* Sensor Holder : Provided locally

Sensor φ Material

For Thi- R3 φ 9.52 x 0.6t

For Thi- R1 and - R2 φ 8.0 x 0.6tCopper tube

PSA941F001



5.2. EEV-SET EEV6-71-E EEV6-160-E EEV6-280-E

⑤ -1 VALVE, BODY (EXP) ASSY PCH387F018 1

⑤ -2 VALVE, BODY (EXP) ASSY PCH387F019 1

⑤ -3 VALVE, BODY (EXP) ASSY PCH387F019A 1

VALVE, BODY (EXP) SSA387F047A ( 1 )

VALVE, BODY (EXP) SSA387F045 ( 1 )

VALVE, BODY (EXP) SSA387F049A ( 1 )

STRAINER SSA357A005B ( 1 ) ( 1 ) ( 1 )

STRAINER SSA357A005T ( 1 ) ( 1 )

STRAINER SSA357A005AC ( 1 )

⑥- 1 COIL, SOLENOID PCH387F002 1

⑥- 2 COIL, SOLENOID PCH387F002A 1 1

No. Part name Part No.Model Name

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.



⑤ VALVE, BODY (EXP) ASSY : Electronic Expansion Valve ASSY

⑤-1 PCH387F018 (for EEV6-71-E)



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-EFor EEV6-280-E



VALVE, BODY (EXP) : Electronic Expansion Valve

EEV6-71-E(P22-P71)

EEV6-160-E(P80-P160)

EEV6-280-E(P224-P280)

SSA387F047A SSA387F045 SSA387F049A


5. Composition of EEV-KIT and component formation STRAINER

Part No. of Strainer： SSA357A005B SSA357A005T SSA357A005AC



⑥ COIL, SOLENOID : EEV Coil

For EEV6-71-E(P22-P71)

For EEV6-160-E & EEV6-280-E(P80-P160) (P224-P280)

SSA382F002 SSA382F002A

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


6. Selection standard of heat exchanger 6.1 Required specifications #1

m3/h

Pa

m3/h

Pa

kW

kW

℃DB

℃WB

Winter ℃DB

External static pressure

External static pressure

Air volume

m3/h

Supply air(SA)

Return air(RA)

Return airtemperature

Directexpansion type

heatexchanger coil

Air volume

Summer

Outdoor air(OA)

Intake air volume

Heating capacity

Cooling capacity

Dx AHU can be designed freely according to the required specifications.

For designing the heat exchanger, following design information is required.

Others ( )

Others ( )

Natural evaporating type

Steam spray type

kg/h

Filter

Humidifier

High performance(Colorimetric method 65%)

Pre-filter

High performance(Colorimetric method 90%)

Electrode steam generator

Humidifyingvolume

< Required specifications #1>

Please refer to check sheet

We pass you an example of

a sample sheet


6. Selection standard of heat exchanger 6.1 Required specifications #2

With Without

OA volume m3/h

Exhaust air volume m3/h

Inverter control With Without

Others ( )

Total heatexchanger

Installation place

Corrosion protection type Specialspecifications

Spring type

Rubber pad type

Anti-vibrationdevice

Maker standard type

Outdoor Indoor

℃DB

℃WB

℃DB

℃WB

Summer

Winter

Designcondition ofoutdoor airtemperature

< 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


・　 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.


6.2.1. Design standard of heat exchanger

Front air speed Front area of heat exchanger

1 Air conditioning unit 2.3m/s 0.025m2/kW *1

2 OA processing unit A 1.2m/s 0.020m2/kW *2

3 OA processing unit B 2.1m/s 0.015m2/kW *2

Unit typeDesign standard Case

No.

*1. Temperature condition is JIS rated condition (See item 6-2)- for details) ④*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.

6.2. Designing method of heat exchanger



6.2.2. Design standard of heat exchanger volumeStandard of heat exhanger volume

80

130

180

230

280

330

0 10 20 30 40 50 60

Cooling capacity （ｋＷ）

Vo

lum

e/ ｋ

Ｗ（c

m3／

kW）

(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.

6.2. Designing method of heat exchanger


・ 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.


6.３ .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 .℃ ℃

Sensor Mounting position

Thi-R1 On the U-bend section

Thi-R2 On the capillary tube section of distributor

Thi-R3 On the header section

6.3. Guidelines of mounting heat exchanger temp. sensors



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 AIR

6.3. Guidelines of mounting heat exchanger temp. sensors

Documents

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