INVENTOR IMCR8WZNa-M, IMCR10WZNa-M, IMCR22SNa-M, IMCR25SNa-M, IMCR12.5WZNa-M Service Manual

Service Manual

Service Manual

Service Manual

Mini Chiller

MINI CHILLER PRODUCT

2

PRODUCT INTRODUCTION ................................................................................... 3

1 MODELS LIST ............................................................................................................................. 3

1.1 Split Type ........................................................................................................................... 3

1.2 Integral Type ...................................................................................................................... 4

2 NOMENCLATURE ...................................................................................................................... 5

1.1 Split Type ........................................................................................................................... 5

1.2 Integral Type ...................................................................................................................... 5

3FUNCTION ................................................................................................................................... 5

4 PRODUCT DATA ......................................................................................................................... 6

4.1 Product Data at Rated C

ondition ........................................................................................ 6

4.2 Operation Range ................................................................................................................. 8

4.3 Pressure-loss Conversion C

hart ......................................................................................... 8

4.4 Electrical Data .................................................................................................................... 8

5 PIPING DIAGRAM ...................................................................................................................... 9

UNITS CONTROL .................................................................................................... 11

1 OPERATION FLOWCHAR

T ..................................................................................................... 11

1.1 Cooling Operation ............................................................................................................ 11

1.2 Heating Operation ............................................................................................................ 12

2 MAIN LOGIC ............................................................................................................................. 13

3 WIRED CONTROLLER ............................................................................................................ 15

3.2.2 Display View ................................................................................................................. 17

4 CONTROL WIRING DESIGN

................................................................................................... 19

UNITS INSTALLATION .......................................................................................... 22

1 UNITS INST

ALL ........................................................................................................................ 22

1.1 Installation Positions ........................................................................................................ 22

1.2 Matters need Attention ..................................................................................................... 22

1.3 DIMENSION DA

TA ........................................................................................................ 22

1.2 INSTALLATION CLEARANCE DA

TA ......................................................................... 25

2 WATER PIPING WORK

............................................................................................................ 28

2.1 Installation Procedure ....................................................................................................... 28

2.2 Matters of Attention ......................................................................................................... 28

2.3 Antifreeze ......................................................................................................................... 28

3 ELECTRIC WIRING WORK ..................................................................................................... 28

3.1 Wiring Principle

............................................................................................................... 28

3.2 Electric Wiring Design ..................................................................................................... 28

3.3 SPECIFICATION OF POWER CORD &

AIR SWITCH ................................................ 28

3.4 WIRING DIAGRAM ....................................................................................................... 29

3.4.1 Wiring Diagram-Split T

ype .......................................................................................... 29

3.4.2 Wiring Diagram- Integral Type ..................................................................................... 31

UNITS MAINTENANCE .......................................................................................... 34

1 ERROR CODE LIST .................................................................................................................. 34

2 FLOW CHART OF TROUBLESHOOTING.............................................................................. 34

3 DISASSEMBLY AND ASSEMBLY PROCEDURE OF MAIN P

ARTS .................................... 36

3.1 Split Type ......................................................................................................................... 36

3.2 Integral Type .................................................................................................................... 46

4 EXPLODED VIEWS AND P

ART LIST ..................................................................................... 50

4.1 Exploded Views and Par

ts List- Split Type ...................................................................... 50

4.2 Exploded Views and Parts List- Integral Type ................................................................. 61

MINI CHILLER PRODUCT

3

PRODUCT INTRODUCTION

1 MODELS LIST

1.1 Split Type

Model

Nominal
Capacity

Power Supply

Appearance

Refrigerant Model Name kW (V,Ph,Hz)

Outdoor Unit indoor Unit

R410A

IMCR8WZNa-M

8.0

380～415V
3Ph 50Hz

IMCR10WZNa-M 10.0

IMCR12.5WZNa-M

12.5

IMCR15WZNa-M

15.0

Note:1Ton =12000Btu/h = 3.517kW

MINI CHILLER PRODUCT

4

1.2 Integral Type

Model

Nominal
Capacity

Power Supply

Appearance

Refrigerant Model Name kW (V,Ph,Hz)

R410A

IMCR22SNa-M 22

380～415V

3Ph 50Hz

IMCR25SNa-M

25

IMCR35SNa-M

35

IMCR45SNa-M

45

Note:1Ton =12000Btu/h = 3.517kW

MINI CHILLER PRODUCT

5

2 NOMENCLATURE

1.1 Split Type

IMC R 15 W Z Na - M

1 2 3 4 5 6 7

NO. Description Options

1 Mini chiller ­2 Product type R=Heat pump

3 Nominal Cooling Capacity

8=8kW
10=10 kW

12.5= 12.5kW
15= 15kW

4 Struct type

Default=Vertical type

W=Horizontal type
5 Product configuration Z=Combination
6 Refrigerant Na=R410A, Default=R22
7 Voltage

M=380～415V 3Ph 50Hz

1.2 Integral Type

IMC R 35 S Na - M

1 2 3 4 5 6

NO. Description Options

1 Mini chiller ­2 Product type R=Heat pump

3 Nominal Cooling Capacity

22=22kW

25=25kW

35=35kW

45=45kW

4 Refrigeration Circuits

Default=One circuit

S=Twin circuit
5 Refrigerant Na=R410A, Default=R22
6 Voltage

M=380～415V 3Ph 50Hz

3FUNCTION

Indoor Unit Type Function Description

Split Type

Heating

Interface kit for up to 16 indoor
units
Memory restart
Two circuits optimized design
Low noise design
Safety and reliability thanks to
advance compressor balance control

Integral Type

MINI CHILLER PRODUCT

6

4 PRODUCT DATA

4.1 Product Data at Rated Condition

4.1.1 Split Type

Models

IMCR_WZNa-M

8 10 12.5 15

Nominal Capacity

Cooling

kW 8 10 13 15

Btu/h 27300 34120 42650 51180

RT 2.3 2.9 3.6 4.3

Heating

kW 9 11 15.5 16

Btu/h 307000 37550 44356 54600

RT 2.6 3.1 3.7 4.6

Power
Consumption

Cooling kW 3.3 4.4 5.2 5.6

Heating kW 3.2 4.2 5.0 5.5

Power Supply 380~415V,3Ph,50Hz

Safeties

High/Low pressure switch, compressor thermal protection, over

current protection, lose of phase/anti-phase protection,

antifreeze protection, water flow switch

Refrigerant

Type R4 10A

Charge kg 3.1 3.55 3.6 5.5

Compressor

Type scroll

NO. 1 1 1 1

Evaporator

Heat Exchanger Tube-in-Tube

Water In/Out Pipe

Diameter

Inch 1’ 1’ 1’ 1’

Condenser

Heat Exchanger Aluminum fin-copper tube

Fan Motor Power Input

kW 0.2 0.14 0.14 0.2

Pump

Water Flow

L/s 0.36 0.5 0.56 0.72

GPM 5.78 7.94 8.83 11.48

Delivery Lift m 18 18 18 18
Power Input kW 0.55 0.55 0.55 0.55

Expansion Vessel Volume L 5 5 5 5

Indoor

Unit

Unit /

Packing

Dimension

Height mm 288/385 288/385 288/385 288/385

Width mm 1100/1285 1100/1285 1100/1285 1100/1285
Depth mm 450/682 450/682 450/682 450/682

Net/Gross Weights 84/96 84/96 84/96 84/96

Outdoor

Unit

Unit /

Packing

Dimension

Height mm 840/985 1250/1385 1250/1385 1250/1385

Width mm 950/1100 950/1110 950/1110 1100/1260
Depth mm 412/450 412/450 412/450 412/450

Net / Gross Weights

90/100 112/123 115/126 123/134

MINI CHILLER PRODUCT

7

4.1.2 Integral Type

Models

IMCR

SNa-M

22 25 35 45

Nominal

Capacity

Cooling

kW 22 25 35 43

Btu/h 64828 85300 119420 153540

RT 5.4 7.1 10 13

Heating

kW 26 27 37 50

Btu/h 71650 92124 126250 184248

RT 6 7.7 10.6 15.4

Power
Consumption

Cooling kW 8.7 9.0 11.8 17.1

Heating kW 8.8 8.85 12.3 16.6

Power Supply 380~415V 3Ph 50Hz

Safeties

High/Low pressure switch, compressor thermal protection, over current

protection, lose of phase/anti-phase protection, antifreeze protection,

water flow switch

Refrigerant

Type R4 10A

Charge kg 3.6X2 4.8X2 6.5X2 7.3X2

Compressor

Type scroll

NO. 2 2 2 2

Evaporator

Heat Exchanger Tube-in-Tube Shell and tube

Water
In/Out

Pipe

Diameter

Inch 1’ 1’ 1-1/2’ 1-1/2’

Condenser

Heat Exchanger Aluminum fin-copper tube

Fan

Motor

Power

Input

kW 0.4 0.4 0.6 0.8

Pump

Water

Flow

L/s 0.9 1.2 1.4 2.2

GPM 14.5 18.9 22.9 35.2

Delivery

Lift

m 22 24 25 27

Power

Input

kW 0.75 0.75 1.5 1.5

Expansion Vessel

Volume

L 8 8 8 8

Unit / Packing

Dimension

Height mm 1850/1960 1850/1960 1760/1870 1761/1870

Width mm 1460/1540 1460/1540 1750/1830 1750/1830

Depth mm 530/610 530/610 800/880 800/880

Net/Gross Weights

kg

370/380 390/400 680/690 755/765

NOTE：
1、Cooling capacity is based on the following conditions：leaving chilled water temp.7℃,outdoor air temp.35℃
2、Heating capacity is based on the following conditions：leaving warmed water temp.45℃, outdoor air
temp.7℃
3、Water flow range for operation must be from 70% to 120% of the rated water flow。
4、The maximum allowable pressure for water pipe is 0.9MPa

MINI CHILLER PRODUCT

8

4.2 Operation Range

Mode

Range of Outdoor Temperature℃ (℉)

Cooling 16~48
Heating -15~28

4.3 Pressure-loss Conversion Chart

Water F l o w （m3/h） 1.2 1.4 1.7

1.9 2.0

The percentage （%） 70 80 100 110 120

Loss of Pressure (kPa) 200 100 0

100 200

NOTE:
The percentage is contrasted to nominal water flow.

4.4 Electrical Data

4.4

.1 Split Type

Model

Rated
Power

Supply

Compressor

Fan Motor

Pump Total

Outdoor

NO.

LRA

each

（A）

MRC

each

（A）

NO.

MRC

（A）

MRC

（A）

MRC

（A）

NRC

（A）

IMCR8WZNa-M

380~41
5V 3Ph
50Hz

1 97 21.2 1 1.5 1.0 23.4 17

IMCR10WZNa-M

2 49 13.2 2 2 1.0 31 22

IMCR12.5WZNa-M

2 52 16.1 2 3 1.0 39 28

IMCR15WZNa-M

2 69 17 2 3 1.0 47 33.5

4.4.2 Integral Type

Model

Rated
Power

Supply

Compressor Fan Motor Pump Total

NO.

LRA

each

（A）

MRC

each

（A）

NO.

MRC

（A）

MRC

（A）

MRC

（A）

NRC

（A）

IMCR22SNa-M

380~415V
3Ph 50Hz

2 42 9.5 2 5 1.3 19.5 14

IMCR25SNa-M`

2 56 11.2 2 5 1.3 23.5 16.8

IMCR35SNa-M

2 101 15.3 2 7.5 2.7 42 30

IMCR45SNa-M

2 110 21.4 2 7.5 2.7 54 38.5

Notes:
LRA: Locked rotor amps (A)
MRC: Maximum running current (A)
NRC: Nominal running current (A)

MINI CHILLER PRODUCT

9

5 PIPING DIAGRAM

Heating circuit

Cooling circuit

Pump

Relief
valve

Flow
switch

Expansion

drum

High pressure
tank

Aluminum fin-copper tube
coil

Four-way valve

Shell and tube heat
exchanger

Inlet

Outlet
High-pressure
switch

Compressor

Low-pressure
switch

Liquid-gas separator

F

INVENTOR COMMERCIAL AIR CONDITIONERS MINI
CHILLER

10

CONTROL

MINI CHILLER CONTROL

11

UNITS CONTROL

1 OPERATION FLOWCHART

1.1 Cooling Operation

MINI CHILLER CONTROL

12

1.2 Heating Operation

Power

On

Open unit running in

heating mode

Satisfying open
comp condition

Pump running

Outdoor

fan, compressor and

valve running

Temp of back water

≥ (Set temp + 5) (spilt type)

Temp of back water

≥ (Set temp + 6) (Integral type)

Compressor and

outdoor fan stop

Compressor stop

for 3 min

NY

N

Y

Y

N

MINI CHILLER CONTROL

13

2 MAIN LOGIC

2.1 Cooling Mode

When press ON button, if the outdoor temperature is over 16℃, it starts the water pump first After

30s, if the outlet water temperature meets the cooling running requirements, it starts the fans of outdoor

unit. Then the compressor will run after 15s. During the period of cooling, the unit will turn off if the

outlet water temperature meets the stopping requirements and the running time of compressor is over

the shortest running time required. The fans of outdoor unit will stop after 15s.

If the outdoor temperature is below 16℃, the unit will stop, and turn off all loads except the water

pump.

Turn on

Turn off

Pump

1

Fan 1

Fan 2

Flow Switch

Compr essor

1

Compr ess or 2

Four-way valve 1

Four-way valve 2

30S

30S

5S

15S

10min

15>Tout>12

14>Tout>7

15>Tout>8

Check if flow switch is ok

15S

15S

5S

3min

3min

5S

When it is turned off

When it is turned off

MINI CHILLER CONTROL

14

2.2 Heating Mode

When press ON button, if the outdoor temperature is below 28℃, it starts the water pump first After

30s, if the outlet water temperature meets the heating running requirements, it starts the fans of outdoor

unit. Then the compressor will run after 15s. During the period of cooling, the unit will turn off if the

outlet water temperature meets the stopping requirements and the running time of compressor is over

the shortest running time required. The fans of outdoor unit will stop after 15s.

If the outdoor temperature is over 28℃, the unit will stop, and turn off all loads except the water

pump.

Pump

Turn

off

Turn

on

Flow Switch

Fan 1

Compressor 1

Four-way Valve1

Fan 2

Compressor 2

Four-way Valve 2

15S

Check if flow switch is ok

5S

3min

When it is turned off

15S

30S

3min

When it is turned off

5S

15S

30S

5S

15S

2S

5S

15S

48<Tout<54

46<Tout<52

MINI CHILLER CONTROL

15

2.3 Defrosting Mode

The condition of start defrosting mode:

Under heating mode, if the accumulative running time of compressor is over the set interval time

of defrosting（ default 45min），and the defrosting temperature is lower than the set starting

temperature(default -4℃) ,the unit will start running defrosting mode, and the 4-way valve will shut

off and the outdoor fan will stop after 2s.

The condition of quit defrosting mode:

Under defrosting mode, if the continual defrosting time is over the set continual time of defrosting

（default 8min），and the defrosting temperature is over the set stopping temperature(default 20℃) ,the

unit will restart running heating mode, and the 4-way valve will turn on and the outdoor fan will run.

3 WIRED CONTROLLER

3.1 Dimension

3.2 Function

3.2.1 Operation View

MINI CHILLER CONTROL

16

MODE

CHECK

ON

QUIT

OFF

NO. Name Function description

1 MODE button

It can switch between cooling and heating, this button is
available only on cooling and heating unit.

2 CHECK button

Press it once under normal state to enter check mode,
under check mode, press this button when “17” is
displayed can change the value of “17”. Under parameter
set mode, press this once can switch the adjusting objection
between parameter and value, press this button for long
(about 5s) to save and quit this parameter setting.

3 Increasing button

To increase present set value or change set/check object.

4 Decreasing button

To decrease present set value or change set/check object.

5 QUIT button

Under Set and Check mode, press it once to quit this mode.
Under parameter set mode, this set value would not be
saved. Press this button for long (about 5s) to set sound,
and make sound switches between always on and always
off.

6 ON button

To turn on the unit; when under compel operation, press
once to quit compel operation.

7 OFF button

To turn off the unit; press it once to quit compel operation
when the unit is under compel operation.

8 LCD display Display information of the unit.

Note：
(1) Turn On, Off Auxiliary Heater: It is only available for heat pump unit. Press CHECK once to

MINI CHILLER CONTROL

17

enter Check mode. Press ▲ and ▼ to change check object, press CHECK again till the present

check object becomes “17”, value “17” switches between 01/03 (auxiliary heater on) and 00/02

(auxiliary heater off). That is 00 Off —>01 On —>00 Off, or 02 Off —>03 On —>02 Off.

(2) Check Parameter: After electrify for 20s, press QUIT then ▲ to enter parameter checking mode.

Under this mode, Auxiliary display area shows the checking object, Main display area displays

the value for the checking object. Press ▲ and ▼ to change the checking object. Press QUIT to

quit from the check mode.

3.2.2 Display View

OFF

QUIT

ON

CHECK

MODE

NO. Name Function description

1 Running mode display

: cooling mode, : heating mode,

: reserved

2 Temp display It shows temperature value displays at main display area.

3 Auxiliary display area

It contains 2 numbers and a comma, for showing temperature and
number of parameter at main display area. It only displays when under
Check mode and Parameter checking mode.

4 Main display area

It contains a minus, 2 numbers and 1 temperature unit, for displaying
value of temperature and parameter (temperature or time value) and error
code. When temperature value is displayed, it shows value in algorism
and temperature unit; when time is displayed, it shows algorism value but
no temperature unit (default unit is min); when it is code, it displays
specific error (refer to Malfunction Error List) but no temperature unit.
Individual temperature or parameter may exceed 99, then adopt AX for
100～109, bX for 110～119, CX for 120～129, dX for 130～139, EX for

140～149, FX for 150～159, and X stands for a number between 0～9.

MINI CHILLER CONTROL

18

Under normal state, it shows temperature for back water.

5 Parameter display

It means the value shown at present main display area is parameter. It
shows only under Parameter Check mode.

6 Defrost display It displays when defrosting, otherwise it doesn’t displays.

7 System ID

It displays when system or compressor orders, for showing which system
is defrosting.

8 Testing display For testing, it displays under compel operation.

9 Error code display

It shows the error code displayed on Main Display Area. It displays when
there is error at system or communication.

Caution:

(1) When unit is off, it displays only temperature of back water. When unit is on, under normal state,

if there is no error, it displays temperature of back water, if there is error, it displays error code;

when there is no operation after 60s of pressing the button, it quit back to normal state display

automatically.

(2) Auto antifreeze operation display (only for heat pump unit)

When auto antifreeze function is started and relevant conditions are satisfied, unit begins auto

antifreeze operation. At this time, LCD main display area displays code d2 (if there is error it

displays error code).

3.3 Installation

1. First select an installation position. According to the size of the communication line of the wire

controller, leave a recess or a embedded wire hole to bury the communication line.

2. If the communication line between the wire controller (85×85×20) and the indoor unit is

surface-mounted, use 1# PVC pipe and make matching recess in the wall (refer to Figure 6); If

concealed installation is adopted, 1# PVC pipe can be used (Refer to Figure 7).

3. No matter if surface mounting or concealed mounting is selected, it is required to drill 2 holes (in

the same level) which distance shall be the same as the distance (60mm) of installation holes in

the bottom plate of the wire controller. Then insert a wood plug into each hole. Fix the bottom

plate of the wire controller to the wall by using the two holes. Plug the communication line onto

the control panel. Lastly install the panel of the wire controller.

Caution:

During the installation of the bottom plate of the wire controller, pay attention to the direction of

the bottom plate. The plate’s side with two notches must be at the lower position, and otherwise the

panel of the wire controller cannot be correctly installed.

MINI CHILLER CONTROL

19

PVC pipe

Fig6：Surface Mounting of Cable Fig7：Concealed mounting of Cable

1 324

Fig 8 Schematic Diagram of Installation

No. Name

1 Wall Surface

2 Bottom Plate of Wire Controller

3 Screw M4X10

4 Panel of Wire Controller

Caution:

1. The communication distance between the main board and the wire controller can be as far as 20m

(The standard distance is 8m).

2. The wire controller shall not be installed in a place where there is water drop or large amount of

water vapor.

4 CONTROL WIRING DESIGN

MINI CHILLER CONTROL

20

twisted-pair

twisted-pair

X17J1

CN2

CN1

Outdoor Unit Controller

Manual Unit Controller

Indoor Unit Controller

The controllers of the split type unit include manual controller, indoor unit controller and outdoor
unit controller. The indoor unit controller communications with manual controller and outdoor unit
controller in RS485. The indoor unit controller connects manual controller with 4-line twisted-pair.
Similarly, the indoor unit controller connects outdoor unit controller with 4-line twisted-pair.
Indoor Unit Controller

Manual Unit Controller

Outdoor Unit Controller

J1

X17

twisted-pair

The controllers of the Integral type unit include manual controller and outdoor unit controller. The

manual controller communications with outdoor unit controller in RS485. The manual controller

connects outdoor unit controller with 4-line twisted-pair.

INVENTOR COMMERCIAL AIR CONDITIONERS MINI
CHILLER

21

INSTALLATION

MINI CHILLER INSTALLATION

22

UNITS INSTALLATION

1 UNITS INSTALL

1.1 Installation Positions

For indoor unit:

z Fix the indoor unit bracket to the wall using appropriate plugs and screws.
z Hang the indoor unit on the top wall mounting bracket.
z Fix the indoor unit at the bottom side using appropriate plugs and screws.

For outdoor unit:

z The installation is frost-free.
z The space around the unit is adequate for servicing.
z The space around the unit allows for sufficient air circulation.
z There is no danger of fire due to leakage of flammable gas.
z All piping lengths and distances have been taken into consideration.

1.2 Matters need Attention

z The

indoor unit is packed in a cardboard box, fixed by straps.

z At delivery, the unit should be checked and any demage should be reported immediately to the

carrier claims agent.

z Check if all indoor unit accessories are enclosed.
z The indoor unit is heavy and should be lifted by two persons.

1.3 DIMENSION DATA

z Split

type

IMCR8WZNa-M(O)

950 340

840

378

412572

MINI CHILLER INSTALLATION

23

IMCR10WZNa-M(O),IMCR12.5WZNa-M(O)

IMCR15WZNa-M(O)

MINI CHILLER INSTALLATION

24

IMCR8WZNa-M(I), IMCR10WZNa-M(I) , IMCR 12.5WZNa-M(I) and IMCR15WZNa-M(I)

Unit: mm

572

450

512

1100

288

z Integral Type

IMCR22SNa-M、IMCR25Na-M

G1"

1850

1460

1260

530

544

G1/2"

G1"

inlet

outlet

DN12mm

Water-filled
vavle

IMCR35Na-M、IMCR45Na-M

MINI CHILLER INSTALLATION

25

7101290

G1-1/2"

1750

1760

800

G1-1/2"

直径12mm

Water Inlet

Water Outlet

1.2 INSTALLATION CLEARANCE DATA

z Split

type（Outdoor unit）

L3

L2

L4

L1

air inlet

air outlet

unit：mm

demonstration L1 L2 L3 L4

distance >500 >1000 >500 >500

z Split type（Indoor unit）

MINI CHILLER INSTALLATION

26

L3

L2

L1

Seismic Spring
Isolators

unit：mm

demonstration L1 L2 L3

distance >250 >800 >1200

Integral Type

MINI CHILLER INSTALLATION

27

air outlet

1290(foundation bolt4-M12)

1750

>1000

>300

>1000

foundation bolt

base

rubber isolator

concrete base

>1200

>1000

1750X2+300=3800

water

outlet

>2000

unit mm

air outlet

water

inlet

water

outlet

water

inlet

air inlet

air inlet

air inlet

air inlet

air inlet

air inlet

air inlet

air inlet

lift method: Cable through the hole, lift by hook

MINI CHILLER INSTALLATION

28

2 WATER PIPING WORK

2.1 Installation Procedure

For all guidelines, instructions and specifications regarding refrigerant pipework between the indoor
unit and the outdoor unit. Please refer to the outdoor unit installation manual.

The units are equipped with a water inlet and water outlet for connection to a water circuit must be
provided by a licensed technician and must comply with all relevant national regulations.

2.2 Matters of Attention

A

ir vents must be provided at all high points of the system. The vents should be located at points which
are easily accessible for servicing. An automatic air purge should be used. Check the valve is not
tightened too much so that automatic release of air in the water circuit remains possible.

2.3 Antifreeze

%

by Weight

0 12 22 30 36 41

Freezing Point℃（℉）

0(32) -5(23) -10(14) -15(5) -20(-4) -30(-22)

Ambient Temperature ℃
（℉）

8.3(47) 3.3(38) -1.7(29) -6.7(20) -11.7(11) -16.7(2)

Cooling Capacity
Correction Factor

1.0 0.985 0.980 0.974 0.970 0.965

Water Flow Correction
Factor

1.0 1.02 1.04 1.075 1.11 1.14

Pressure Drop Correction
Factor

1.0 1.07 1.11 1.18 1.22 1.24

3 ELECTRIC WIRING WORK

3.1 Wiring Principle

POWER SUPPLY — The electrical characteristics of the available power supply must agree with the
unit nameplate rating. Supply voltage must be within the limits shown. See 3.3 for electrical and
configuration data. FIELD POWER CONNECTIONS — All power wiring must comply with
applicable local and national codes. Install field-supplied, branch circuit fused disconnect(s) of a type
that can be locked off or open. Disconnect(s) must be located within sight and readily accessible.

3.2 Electric Wiring Design

3.2

.1 Electric Wiring Design- Split Type

3.2.2 Electric Wiring Design- Integral Type

3.3 SPECIFICATION OF POWER CORD & AIR SWITCH

Mod

el Power Supply

Capability

of Air

Switch(A)

Minimum

Sectional Area

of Earth

Wire(mm

2

)

Minimum

Sectional Area

of Power

Cord(mm2)

IMCR8WZNa-M

380～415V,3,50

10 2.5 2.5

IMCR10WZNa-M

380～415V,3,50

13 2.5 2.5

MINI CHILLER INSTALLATION

29

IMCR12.5WZNa-M

380～415V,3,50

16 2.5 2.5

IMCR15WZNa-M

380～415V,3,50

16 2.5 2.5

IMCR22SNa-M

380～415V,3,50

25 4 4

IMCR25SNa-M

380～415V,3,50

32 6 6

IMCR35SNa-M

380～415V,3,50

63 10 10

IMCR45SNa-M

380～415V,3,50

63 10 10

Note：

3.4 WIRING DIAGRAM

3.4.1 Wiring Diagram-Split Type

3.4.1.1 Outdoor Units
Model:IMCR8WZNa-M

WH

RD

BU

BU

C2

KM

TC

C1

XT3

AP1

XT1

XT2

WH

BN

BN

BU

BK

TC

BN

W22

BU

W21

W20

RD

EH

2

1

W19

RD

W17

RD

W18

BN

W16

BN

W15

W14

BK

W13YEW12

W11

WH

W10

RD

W9

W8

WH

W7

WH

W6

BU

W5

BUW4

BU

W3

2

1

2

1

X7

RD

W2

W1

Electric heater

C2

C1

Άτ

Άσ

Άς

Άρ

PE

Fan motor

compressor

PE

E

YEGN

YEGN

E

PE

AP2

indoor
unit

1

0

2

1

XT3

6

415

3

1

2

XT2

KM

2

86

4

S

R

C

L

N

COMP

M

Model: IMCR10WZNa-M, IMCR12.5WZNa-M

MINI CHILLER INSTALLATION

30

POWER

XT3

AP1

C1C2

XT1

KM2

KM1

TC

XT2

C3C4

COMPONENT POSITION
DIAGRAM

12

2

1

1

2

2

1

W56

W52

W51

W50

W49

W48W47

W45

W43

W42

X34

X33

X32

X31

W38

W37

W36

W35

W34

W33

W32

W27

W31

W30

W29

W28

X10X9

X8X7

YE

BUBNWH

BK

BN

BN

BKWHBNBU

YE

C4

C3

compressor1

Fan motor 1

2
1

2
1

2
1

KM2

6

4

1

5

3

6

4

1

5

3

PE

E

YEGN

M2

3

5

1

4

6

2

2

6

4

1

5

3

L1

T1

KM2

KM1

T1

L1

C1

YEGN

E

PE

S

R

C

COMP1

M1

COMP2

XT1

N

L

C

R

S

KM1

XT2

2

1

XT3

1

2

indoor
unit

AP2

PE

E

YEGN

YEGN

E

PE

compressor2

Fan motor 2

PE

Άρ

Άς

Άσ

Άτ

C2

1

2

W24

TC

Model: IMCR15WZNa-M

W37

W34

W33

W49

W50

W38

W36

W35

W52W51

W27

W32

W31

W30

W28

W29

63622212

3.4.1.2 Indoor Units

MINI CHILLER INSTALLATION

31

OG

controller

COMPONENT POSITION
DIAGRAM

pump

M

PE

PE

Temp.Sensor

Temp.Sensor

Temp.Sensor

Frost-proof

KM1

KM2

TC

XT1

AP2

TC

flow in

CN4

CN13

CN6

flow out

AP2

anti-ice1

X1

AP3

4

CN2

CN1

CN11

OVERLOAD

CN12

OUTDOOR UNIT

12WH

10BK

X17

11BK

AP1

FL

W_FLOW

+12V

CN5

YEGN

16

W1

U1

W2

T1

6YE

KM2

L1

4BU

L

N

1BN

7BU

XT1

PE

POWER

NN

L

L

2RD

KM2KM1

end_switchheat1

pump

HEATER

A2

A2

EH

13OG

14GN

T1

L1

A1

A1

KM1

9BU

5RD

8BU

3YE

XT1-2

XT1-1

HT

15

Water-Outlet

Water-Inlet

3.4.2 Wiring Diagram- Integral Type

M

odel:IMCR22SNa-M, IMCR25SNa-M,

MINI CHILLER INSTALLATION

32

Specification:

1.Auxiliary electric heater is optional part for heat pump unit, once it is used, please connect the temp. restricter HT1
with XT2.1-1 and XT2.1-2.

2. Cooling only type unit do not have below parts: KM5, Auxiliary electric heater, LP12, LP22, Defrost temp. sensor 1.
. if the chiller is connected with fancoil units, please remove the wire between AC-L and X16 on PC, then connect X16

to X1 on fancoil unit patching board.

. Remarks: " " means terminals on XT2.1 or XT2.2 patching board.

723

724

3 3

3

33

M1

M2

M3

PEEPE PE PE PE

EEEE

PE

Άρ

ΆςΆσ

R

S

T

Άρ

Άς
Άσ

TC

11

IMCR35SNa-M, IMCR45SNa-M

M1

M2

M3

EEE EE

Specification:

Auxiliary electric heater is optional part for heat pump unit, once it is used, please connect the temp. restricter HT1

with XT2-10 and XT2-11.

2. Cooling only type unit do not have below parts: KM5, Auxiliary electric heater, LP12, LP22, RT5

,RT6,YV1,YV2.

3. if the chiller is connected with fancoil units, please remove the wire between AC-L and X16 on PC, then connect X16
to X1 on fancoil unit patching board.

4. Remarks: " " means terminals on XT2 patching board.

INVENTOR COMMERCIAL AIR CONDITIONERS MINI
CHILLER

33

MAINTENANCE

MINI CHILLER MAINTENANCE

34

UNITS MAINTENANCE

1 ERROR CODE LIST

Code Indication Error Name Control Description

E1

Comp. 1 High-pressure

protection

Press ON/OFF key to clear

E2

System 1 antifreeze

protection

Auto resume

E3

Comp. 1 Low pressure

protection

Press ON/OFF key to clear

E4

Comp. 1 Discharge temp.

protection

Press ON/OFF key to clear

E5

Comp. 1 overload

protection

Press ON/OFF key to clear

E6 Pump overload protection Press ON/OFF key to clear

E7 Flow switch failure Press ON/OFF key to clear

E8 Fan 1 overload protection Press ON/OFF key to clear

E9

System 1 outlet water

temp. too high

Auto resume

b1

Comp. 2 High-pressure

protection

Press ON/OFF key to clear

b2

System 2 antifreeze

protection

Auto resume

b3

Comp. 2 Low pressure

protection

Press ON/OFF key to clear

b4

Comp. 2 Discharge temp.

protection

Press ON/OFF key to clear

b5

Comp. 2 overload

protection

Press ON/OFF key to clear

b8 Fan 2 overload protection Press ON/OFF key to clear

b9

System 2 outlet water

temp. too high

Auto resume

F1

Antifreeze temp. sensor 1

failure

Auto resume

F2

Antifreeze temp. sensor 2

failure

Auto resume

F3

Defrost temp. sensor 1

failure

Auto resume

F4

Defrost temp. sensor 2

failure

Auto resume

F5

Discharge temp. sensor 1

error

Auto resume

F6

Discharge temp. sensor 2

error

Auto resume

F7

Outdoor ambient temp.

sensor failure

Auto resume

F8

Inlet water temp. sensor

failure

Auto resume

F9

Outlet water temp. sensor

failure

Auto resume

EC

Communication

malfunction

Auto resume

2 FLOW CHART OF TROUBLESHOOTING

MINI CHILLER MAINTENANCE

35

The unit cannot

start

If the power

supply is normal

Power off Stop and restart

If fuse burnt Replace the fuse

If three-phase

unit

If phase

sequence

protection

Adjust any two

phases

If the power of

mainboard is

failure

If the power

cable is fallen

Cut off the power,

restart after the power

is resumed

Mainboard is

broken

Replace the

mainboard

If the fuse is

burnt

Replace the fuse

The connection wire

between display board and

mainboard is loosened

Yes

Yes

No

Yes

No

No

Yes Yes

No

Yes

No Yes

Yes

No

Yes

No

Reconnect

Yes

If the

transformer is

burnt

No

Replace the

transformer

Yes

If The display

board is broken

No

Replace the

display board

No

MINI CHILLER MAINTENANCE

36

3 DISASSEMBLY AND ASSEMBLY PROCEDURE OF MAIN PARTS

3.1 Split Type

3.1.1 Outdoor Unit

MINI CHILLER MAINTENANCE

37

Operation Procedure Illustration

(1) Remove the front case

1) Remove the panel

· Loosen the two tappong screws

fixing the front grill.

·Pull down and remove the front grill.
（See Fig. 2）

2) Remove the cover.

· Loosen the two tappong screws

fixing the cover. Remove the cover
（See Fig. 3）

Fig. 1

Fig. 2

Fig. 3

MINI CHILLER MAINTENANCE

38

3）Remove the front plate.

· Loosen the two tappong screws
fixing the front plate. Remove the
front plate.（See Fig. 5）

4）Remove the grill

· Loosen the two tappong screws
fixing the grill. Remove the grill.
（See Fig. 6）

grill

Fig. 4

Fig. 5

Fig. 6

MINI CHILLER MAINTENANCE

39

(2) Remove the axial fan

· Loosen the ball nuts fixing the
axial fan and remove the washer.（See
Fig. 7）

·Pull outward to remove the impeller.
（See Fig. 7）

(3) Remove the motor

· Loosen the screws fixing the

motor support. Remove the motor
support.（See Fig .8 & Fig.9）

Ball Nut

Fig. 7

Motor support

Fig. 8

Fig. 9

MINI CHILLER MAINTENANCE

40

· Loosen the two screws fixing the

motor. Pull backward and remove the
motor.（See Fig .10）

·Loosen the wire of motor, and pull it

through the hole.

(4) Remove the 4-way valve and
capillary tube

1）Remove the 4-way valve

·Loosen the screws fixing the coil of

4-way valve。

·Remove the coil of 4-way valve。

·Welding out the tubes connected to the

4-way valve.

·Remove the 4-way valve.（See Fig.11）

Note：When welding, the valve should

be covered by wet cloth in order
to avoid the high temp. hurt。

2）Remove the capillary tube

·Welding out the tubes connected to the

capillary tube.

·Remove the capillary（See Fig.12）

Fig. 10

Fig. 11

Fig. 12

MINI CHILLER MAINTENANCE

41

(5) Remove electric box

· Loosen the screws fixing the box

cover. Remove all pressure
switches and temp. sensor.（See
Fig.13）

(6)Remove compressor and
gas-liquid separator

· Remove the connection wire of

compressor。（See Fig.14）

· welding out the suction pipe and

discharge pipe.（See Fig.14）

·Loosen the bolts fixing the compressor

and Remove the compressor and
gas-liquid separator.

Noise-absorbing cover

Fig.13

Gas-liquid separator Compressor

Fig.14

MINI CHILLER MAINTENANCE

42

(7)Remove gas and
liquid valve

1. Remove gas valve

·Loosen the bolts fixing the
gas valve.

· welding out the pipe

connected to the gas valve
(See Fig.15）。

Note ： When welding, the
valve should be covered by
wet cloth in order to avoid
the high temp. hurt。

2. Remove liquid valve

·Loosen the bolts fixing

the liquid valve.

· welding out the pipe

connected to the liquid
valve (See Fig.16）。

Note ： When welding, the
valve should be covered by
wet cloth in order to avoid
the high temp. hurt。

Fig.15

Fig.16

MINI CHILLER MAINTENANCE

43

3.1.2 Indoor Unit

Operation Procedure Illustration

(1) Remove the Cover

·Loosen the tappong screws fixing the
cover.（See Fig. 1）

·Remove the cover（See Fig. 2）

(2) Remove electric box

· Loosen the screws fixing the box

cover. Remove all pressure
switches and temp. sensor.（See
Fig.3）

Fig. 1

Fig. 2

Electric box

Fig. 3

MINI CHILLER MAINTENANCE

44

3）Remove the water pump

·Loosen the joints fixing the water
pump. Remove the water pump.
（See Fig. 4）

4）Remove the tube in tube
heat-exchanger

· welding out the pipes connected
to the tube in tube heat-exchanger.
Remove the tube in tube
heat-exchanger.（See Fig. 5）

5）Remove the flow switch

· Loosen the joints fixing the flow
switch. Remove the flow switch.
（See Fig. 6）

Water pump

Fig. 4

Tube in tube heat-exchanger

Fig. 5

Flow switch

Fig. 6

MINI CHILLER MAINTENANCE

45

6）Remove the expansion
gas tank

· Loosen the joints fixing the
expansion gas tank. Remove the
expansion gas tank.（See Fig. 7）

Expansion gas tank

Fig. 7

MINI CHILLER MAINTENANCE

46

3.2 Integral Type

(1) Remove the front case

·Loosen the tappong screws fixing

the front case. （See Fig. 1）

·Pull down and remove the front

case.（See Fig. 2）

Fig. 1

Fig. 2

MINI CHILLER MAINTENANCE

47

(2) Remove electric box

· Loosen the screws fixing the box

cover. Remove all pressure
switches and temp. sensor.（See
Fig.3）

(3)Remove compressor and
gas-liquid separator

· Remove the connection wire of

compressor。（See Fig.4）

· welding out the suction pipe and

discharge pipe.（See Fig.4）

· Loosen the bolts fixing the

compressor and Remove the
compressor and gas-liquid separator.

Electric box

Fig. 3

Gas-liquid separator Compressor

Fig. 4

MINI CHILLER MAINTENANCE

48

4）Remove the water pump

·Loosen the joints fixing the water

pump. Remove the water pump.（See
Fig. 5）

5） Remove the expansion
gas tank

· Loosen the joints fixing the

expansion gas tank. Remove the
expansion gas tank.（See Fig. 6）

Water pump

Fig. 5

Expansion gas tank

Fig. 6

MINI CHILLER MAINTENANCE

49

6）Remove the flow switch

· Loosen the joints fixing the flow

switch. Remove the flow switch.（See
Fig. 7）

7 ） Remove the shell and
tube heat-exchanger

· welding out the pipes connected to

the shell and tube heat-exchanger.
Remove the shell and tube
heat-exchanger.（See Fig. 8）

Flow switch

Fig. 7

Shell and tube heat-exchanger

Fig. 8

MINI CHILLER MAINTENANCE

50

4 EXPLODED VIEWS AND PART LIST

4.1 Exploded Views and Parts List- Split Type

4.1.1 Outdoor Units

Model：IMCR8WZNa-M(O)

Exploded Views:

30

20

29

28

27

26

25

24

23

22

17

16

10

11

12

6

8

9

7

4

3

21

5

21

18

19

13

14

15

MINI CHILLER MAINTENANCE

51

Part List for IMCR8WZNa-M(O):

No. Name of Part Part Code Quantit

y

1 Front Grill 22265401 1
2 Front Plate 01435402 1
3 Protection Grill 01475401 1
4 Top Cover 01255402 1
5 Back Side Plate 01305401 1
6 Handle 26235252 3
7 Valve Support 01715402 1
8 Metal Base 01205402 1

9 Front Side Plate 01305403 1
10 Axial Flow Fan 10335401 1
11 Condenser Assy 01125703 1
12 Motor Support 01705402 1
13 Motor LW92C 150154511 1
14 Isolation Plate 01235403 1
15 4-way Valve (SHF-20H) 43000338 1
16 4-way Valve Coil 430004005 1
17 Compressor C-SBN303H8D 00129050 1
18 Gas Valve 07130212 1
19 Liquid Valve 071302335 1
20 Pressure Switch 460200061 1
21 Temp Sensor 3900012126 1
22 Electric Box 01405720 1
23 Terminal Board 42011044 1
24 Transformer 57X25D 43110240 1
25 Terminal Board 42011103 1
26 MainPCB WZ163 30221602 1
27 Capacitor CBB61 4uF/500V 33010013 1
28 AC Contactor GC3-18/01KK/3TF4211 44010226 1
29 Isolation WasherD 70410525 2
30 Wire Clamp 71010102 2

MINI CHILLER MAINTENANCE

52

Model: IMCR10WZNa-M(O)、IMCR12.5WZNa-M(O)、IMCR15WZNa-M(O))

Exploded views:

MINI CHILLER MAINTENANCE

53

Part List for IMCR10WZNa-M(O):

NO Name of Part Part Code

Quantity

1 Front Grill 22265251 2
2 Front Plate

01435433

1

3 Protection Grill

01475432 1

4 Top Cover

01255262

1

5 Back Side Plate

01305434

1

6 Handle

26235252

3

7 Valve Support

01715001

1

8 Metal Base

01205433

1

9 Front Side Plate

01305431

1

10 Protection Grill Gasket

0

11 Axial Flow Fan

10335253

2

12 Condenser Assy

01125702 1

13 Motor Support

01705431

1

14 Motor FW68G

15013110

2

15 Isolation Plate

01235440

1
16 Liquid-gas Separator 07225433 1
17 4-way Valve 43000338 1
18 Compressor C-SBN373H8D 00129051 1
19 Gas Valve 07130212 1
20 Liquid Valve 071302115 1
21 Ambient Sensor(15K) 3900012126 1
22

Temperature Sensor (20K)

3900012125

1
23 Temp. Limiter

0
24 Electric Box 01409067 1
25 Wire Clamp

71010102 2

26 Terminal Board

42011044

1
27 Terminal Board

42011103

1
28 Terminal Board 0
29

Capacitor CBB61 3.5μF/450V 33010010

2
30

AC Contactor GC3-18/01KK/3TF4211

44010226

1
31

Over current Protector

46020112

1
32 Phase Reverse Protector 0
33 Isolation Washer D 70410525 2
34

4-way Valve Coil

430004002

1

35

Compressor Gasket

0

36

Capillary Assy

04105702

1

37 pressure switch 460200061 1
38

Capacitor Clamp

0

39 Transformer 57X25D 43110240 1
40 Main PCB WZ163

30221602

1

MINI CHILLER MAINTENANCE

54

Part List for IMCR12.5WZNa-M(O):

NO Name of Part Part Code

Quantity

1 Front Grill 22265251 2
2 Front Plate

01435433

1

3 Protection Grill

01475432 1

4 Top Cover

01255262

1

5 Back Side Plate

01305434

1

6 Handle

26235252

3

7 Valve Support

01715001

1

8 Metal Base

01205433

1

9 Front Side Plate

01305431

1

10 Protection Grill Gasket

0

11 Axial Flow Fan

10335253

2

12 Condenser Assy

01125702 1

13 Motor Support

01705431

1

14 Motor FW68G

15013110

2

15 Isolation Plate

01235440

1
16 Liquid-gas Separator 07225433 1
17 4-way Valve 43000338 1
18 Compressor C-SBN373H8D 00102702 1
19 Gas Valve 07130212 1
20 Liquid Valve 071302115 1
21 Ambient Sensor(15K) 3900012126 1
22

Temperature Sensor (20K)

3900012125

1
23 Temp. Limiter

0
24 Electric Box 01409067 1
25 Wire Clamp

71010102 2

26 Terminal Board

42011044

1
27 Terminal Board

42011103

1
28 Terminal Board 0
29

Capacitor CBB61 3.5μF/450V 33010010

2
30

AC Contactor GC3-18/01KK/3TF4211

44010226

1
31

Over current Protector

46020112

1
32 Phase Reverse Protector 0
33 Isolation Washer D 70410525 2
34

4-way Valve Coil

430004002

1

35

Compressor Gasket

0

36

Capillary Assy

04105702

1

37 Pressure Switch 460200061 1
38

Capacitor Clamp

0

39 Transformer 57X25D 43110240 1
40 Main PCB WZ163

30221602

1

MINI CHILLER MAINTENANCE

55

Part List for IMCR15WZNa-M(O):

NO Name of Part Part Code Quantity

1 Front Grill

22265251

2

2 Front Plate

01435433 1

3 Protection Grill

01475432 1

4 Top Cover

01255472

1

5 Back Side Plate

01305434

1

6 Handle

26235252

3

7 Valve Support

01715001

1

8 Metal Base

01205472 1

9 Front Side Plate

01305431

1

10 Protection Grill tub

42035201

1

11 Axial Flow Fan

10335253

2

12 Condenser Assy

01109107 1

13 Motor Support

01705471

1

14 Motor LW92C

150154511 2

15 Isolation Plate

01235473

1

16 Liquid-gas Separator

07225479

1

17 4-way Valve

43000338

1

18 Compressor C-SBN453H8D

00129052

1

19 Gas Valve

07130212

1

20 Liquid Valve

071302335

1

21 Ambient Sensor(15K)

3900012126

1

22

Temperature Sensor (20K)

3900012125

1

23 Temp. Sensor

3900012129

1

24 Electric Box

01392108

1

25 Wire Clamp

71010102 2

26 Terminal Board

42011044

1

27 Terminal Board

42011103

2

28 Terminal Board

0

29 Capacitor 4uF/500V

33010013

2

30

AC Contactor LC1D2501M7C

44010213

1

31

Over current Protector 46020103

1

32

Phase Reverse Protector 380V

46020052

1

33

Isolation Washer C

70410523

1

34

4-way Valve Coil

430004005 1

35

Compressor Gasket

76710209 4

36

Capillary Assy

03009105 1

37

pressure switch

460200061

1

38

Capacitor Clamp

0

39

Transformer 57X25D

43110240

1

40

Main PCB WZ163

30221602

1

MINI CHILLER MAINTENANCE

56

4.1.2 Indoor Units

Model：IMCR8WZNa-M(I)、IMCR10WZNa-M(I) IMCR12.5WZNa-M(I)、IMCR15WZNa-M(I)

Exploded views:

32

17

132

36

37

35

33

34

4 5 6

10

7

8

9

14

13

12

11

15

16

31

30

29

2728 26 2425 23 22 21

18

19

20

MINI CHILLER MAINTENANCE

57

Part List for IMCR8WZNa-M(I):

NO Name of Part Part Code Quantity

1 Water Pump 43138218 1
2 Vertical Pillar Assy 01758216 4
3 Pedestal Parts 012021191 1
4 Front Panel Assy 015382471 1
5 Electric Box cover 014182371 1
6 Electric Box 01418235 1
7 Temperature Sensor 390001219 1
8 Temperature Sensor 390001217 1

9 Temperature Sensor 3900019819 1
10 Terminal Board 42010254 1
11 AC Contactor CJX9B-25S/D 44010245 1
12 Transformer 57X25D 43110240 1
13 Main Board 30221501 1
14 Electric Component Mounting Plate 01338243 1
15 Wiring 40110111 1
16 Display Board 30291603 1
17 Left Side Plate 01302116 1
18 Double Pipe Heat Exchanger 00908231 1
19 Expansion Drum 07228219 1
20 Cross Beam Sub-Assy 01778240 1
21 Rear Panel Assy 015382501 1
22 Cross Beam Sub-Assy 1 01778240 1
23 Top Cover 012521111 1
24 Collecting Gas Pipe Sub-Assy 04672101 1
25 Liquid Divider Sub-Assy 04322108 1
26 Gas Pipe Sub-Assy 03812159 1
27 Liquid Sub-Assy 03232157 1
28 Outlet Water Pipe Sub-Assyv 03248247 1
29 Big Handle 26233431 1
30 Relief Valve 07188204 1
31 Tube Clip 02148224 1
32 Enter Water Pipe Sub-Assy 03248248 1
33 Right Side Plate 1 01302118 1
34 Water switch FSF50P-2G1/2 45028207 1
35 Auto Water Replenishing Valve 07108207 1
36 Right Side Plate 2 01302114 1
37 Water tube jam 76718201 1

技术服务手册 户式（别墅）中央空调机组

58

Part List for IMCR10WZNa-M(I):

NO Name of Part Part Code Quantity

1 Water Pump MHI202 43138218 1
2 Vertical Pillar Assy 01758216 4
3 Pedestal Parts 012021171 1
4 Front Panel Assy 015382471 1
5 Electric Box cover 014182371 1
6 Electric Box 01418235 1
7 Temperature Sensor 390001219 1
8 Temperature Sensor 390001217 1

9 Temperature Sensor 390001216 1
10 Terminal Board 42010254 1
11 AC Contactor CJX9B-25S/D 44010245 1
12 Transformer 57X25D 43110240 1
13 Main Board Z153 30221501 1
14 Electric Component Mounting Plate 01338243 1
15 Wiring 40110111 1
16 Display Board Z16301 30291603 1
17 Left Side Plate 01302116 1
18 Double Pipe Heat Exchanger 009082291 1
19 Expansion Drum 07228219 1
20 Cross Beam Sub-Assy 01778240 1
21 Rear Panel Assy 015382501 1
22 Cross Beam Sub-Assy 1 01778236 1
23 Top Cover 012521091 1
24 Collecting Gas Pipe Sub-Assy 04672101 1
25 Liquid Divider Sub-Assy 04322108 1
26 Gas Pipe Sub-Assy 04632102 1
27 Liquid Sub-Assy 04322106 1
28 Outlet Water Pipe Sub-Assyv 03248246 1
29 Big Handle 26233431 1
30 Relief Valve 07188204 1
31 Tube Clip 02148224 1
32 Enter Water Pipe Sub-Assy 03248248 1
33 Right Side Plate 1 01312107 1
34 Water switch FSF50P-2G1/2 45028207 1
35 Auto Water Replenishing Valve 07108207 1
36 Right Side Plate 2 01302114 1
37 Water Tube Jam 76718201 1

技术服务手册 户式（别墅）中央空调机组

59

Part List for IMCR12.5WZNa-M(I):

NO Name of Part Part Code Quantity

1 Water Pump MHI202 43138218 1
2 Vertical Pillar Assy 01758216 4
3 Pedestal Parts 012021171 1
4 Left Side Plate 01302116 1
5 Electric Box cover 014182371 1
6 Electric Box 01418235 1
7 Temperature Sensor 390001219 1
8 Temperature Sensor 390001217 1

9 Temperature Sensor 3900012116 1
10 Terminal Board 42010254 1
11 AC Contactor CJX9B-25S/D 44010245 1
12 Transformer 57X25D 43110240 1
13 Main Board Z153 30221501 1
14 Electric Component Mounting Plate 01338243 1
15 Wiring 40110111 1
16 Display Board Z16301 30291603 1
17 Left Side Plate 01302116 1
18 Double Pipe Heat Exchanger 00908229 1
19 Expansion Drum 07228219 1
20 Cross Beam Sub-Assy 01778240 1
21 Rear Panel 015382501 1
22 Cross Beam Sub-Assy 1 01778236 1
23 Top Cover 012521091 1
24 Collecting Gas Pipe Sub-Assy 04672101 1
25 Liquid Divider Sub-Assy 04322108 1
26 Gas Pipe Sub-Assy 04632102 1
27 Liquid Sub-Assy 04322106 1
28 Outlet Water Pipe Sub-Assyv 03248247 1
29 Big Handle 26233431 1
30 Relief Valve 07188204 1
31 Tube Clip 02148224 1
32 Enter Water Pipe Sub-Assy 03248248 1
33 Right Side Plate 1 01312107 1
34 Water switch FSF50P-2G1/2 45028207 1
35 Auto Water Replenishing Valve 07108207 1
36 Right Side Plate 2 01302114 1
37

Water Tube Jam 76718201

1

技术服务手册 户式（别墅）中央空调机组

60

Part List for IMCR15WZNa-M(I)：

NO Name of Part Part Code Quantity

1 Water Pump MHI202 43138218 1
2 Vertical Pillar Assy 01758216 4
3 Pedestal Parts 012021171 1
4 Left Side Plate 01302116 1
5 Electric Box cover 014182371 1
6 Electric Box 01418235 1
7 Temperature Sensor 390001219 1
8 Temperature Sensor 390001217 1

9 Temperature Sensor 3900012116 1
10 Terminal Board 42010254 1
11 AC Contactor CJX9B-25S/D 44010245 1
12 Transformer 57X25D 43110240 1
13 Main Board Z153 30221501 1
14 Electric Component Mounting Plate 01338243 1
15 Wiring 40110111 1
16 Display Board Z16301 30291603 1
17 Left Side Plate 01302116 1
18 Double Pipe Heat Exchanger 00908229 1
19 Expansion Drum 07228219 1
20 Cross Beam Sub-Assy 01778240 1
21 Rear Panel 015382501 1
22 Cross Beam Sub-Assy 1 01778236 1
23 Top Cover 012521091 1
24 Collecting Gas Pipe Sub-Assy 04672101 1
25 Liquid Divider Sub-Assy 04322108 1
26 Gas Pipe Sub-Assy 04632102 1
27 Liquid Sub-Assy 04322106 1
28 Outlet Water Pipe Sub-Assyv 03248246 1
29 Big Handle 26233431 1
30 Relief Valve 07188204 1
31 Tube Clip 02148224 1
32 Enter Water Pipe Sub-Assy 03248248 1
33 Right Side Plate 1 01312107 1
34 Water Switch FSF50P-2G1/2 45028207 1
35 Auto Water Replenishing Valve 07108207 1
36 Right Side Plate 2 01302114 1
37 Water Tube Jam 76718201 1

技术服务手册 户式（别墅）中央空调机组

61

4.2 Exploded Views and Parts List- Integral Type

Model： IMCR22SNa-M、IMCR25Na-M

Exploded views：

Part List for IMCR22SNa-M、IMCR25Na-M：

No Name of Part Part Code Quantity

1

Front Panel 2 01542102 1

2

Encloser Sub-assy 01512101 1

3

Fan 10358202 2

4

Grill 01572101 2

5

Outlet Pipe Sub-assy 04362102 1

6

Fan Motor SW200B 15018501 2

7

Motor Support Sub-assy 01708222 2

8

Condenser Components 1 011221042 1

9

Windshield 2 01352102 1

10

Rear Side Plate 01312111 1

技术服务手册 户式（别墅）中央空调机组

62

11

Right Side Plate Sub-assy 01312233 1

12

Transition Pipe Sub-assy 1 (Four-way
Valve-condenser) 04312244 1

13

Water Tray Sub-assy 01282102 1

14

Vertical Shaft 2 01852102 2

15

Transition Pipe Sub-assy 3 (Condenser-Capillary
for heating) 04312110 1

16

Four-way Valve Sub-assy 1 04142226 1

17

Base Frame Sub-assy 01282253 1

18

Discharge Pipe Sub-assy 04632241 2

19

Base Plate Sub-assy 0119210102 1

20

Suction Pipe Sub-assy 04672110 1

21

Capillary Sub-assy (Heating) 04102220 2

22

Two-direction Liquid Vessel 07228214 2

23

Compressor and Fittings C-SBN373H8D 00129051 2

24

Gas-liquid Separator 07228212 2

25

Vertical Shaft Sub-assy 1 01852101 1

26

Tube-in-tube Heat Exchanger 009021011 1

27

Water Pump MHI404 3～400V 43138206 1

28

Expansion Vessel 072282191

1

29

Inlet Pipe Sub-assy 04362103 1

30

Auto Water Replenishing Valve 07108207 1

31

Emergency Valve 07188204 1

32

Water Flow Switch FSF50P-1R1 45028209 1

33

Left Side Board Sub-assy 01312109 1

34

Electric Box Sub-assy 01392114 1

35

Front Panel 1 01542101 1

36

Wind Shield 1 01352101 1

37

Condenser Components 2 011221052 1

38

Capillary Sub-assy (Cooling) 04102221 2

39

Four-way Valve Sub-assy 2 04142227 1

技术服务手册 户式（别墅）中央空调机组

63

Model：IMCR35Na-M、IMCR45Na-M

Exploded views：

Part List for

IMCR35Na-M、IMCR45Na-M：

No Name of Part Part Code Quantity

1 Base Frame Sub-assy

01202113

1

2

Base Plate Sub-assy

01202111 1

3

Front Vertical Shaft Sub-assy

01758211 1

4 Gas-liquid Separator 07228003 2

5

Compressor and Fittings
ZP83KCE-TFD-522

00202231 2

6

Electric Cabinet Sub-assy

01408249 2

技术服务手册 户式（别墅）中央空调机组

64

7

Cover Plate for Electric cabinet

01258226 2

8

Front Side Plate

01302103 2

9

Condenser Components 2

01108240 1

10

Vertical Shaft(Front-right) 01722107

1

11

Water Pump MHI804

431382041 1

12

Inlet Pipe Sub-assy 2

04362101

1

13

Expansion Vessel

072282191

1

14

Water Flow Switch FSF50P-1R1

45028209 1

15

Left Side Plate

01308274 1

16

Vertical Shaft (Behind-right)

01722103 1

17

Inlet Pipe Sub-assy 1

03248243 1
18 Four-way Valve(SHF-35H) 43000339 2
19 Horizontal Beam (Front) 01778215 1
20

Horizontal Beam (Left)

01778204

1
21 Fan 10518601 2
22 Horizontal Beam (cover plate) 01778213 1
23

Roof Cover Plate Sub-assy(Left)

01252103

1
24 Flow-guide Loop 01448243 2
25

Roof Cover Plate Sub-assy(Right)

01252105 1

26

Mortor SW300A

15018606 1

27

Mortor Mounted Plate Sub-assy 01728238

2
28

Horizontal Beam (Right) 01778206

2
29

Condenser Components 1 01108239

1
30

Water Tray Sub-assy 01272103

1
31

Rear Grill

01238202 1

32

Condenser Base Tray Sub-assy

01768211 1

33

Rear Side Plate 1

01302106 1

34

Expansion Valve Sub-assy 1 For
Heating

07332229 1

35

Expansion Valve Sub-assy 1 For
Cooling

07332227 1

36

Shell in Tub GZR35S

01050809 1

37

Vertical Shaft（Behind-right）

01722103 1

38

Current Divider

06618733

2
39

Right Side Plate

01308276 1

40

Two-direction Liquid vessel

07228213

2

41

Expansion Valve Sub-assy 2 For
Heating

07332230

1

42

Vertical Shaft（Front-right）

01722107 1

43

Expansion Valve Sub-assy 2 For
Cooling

07332228 1