Mitsubishi MSH-C18TV-E1, MSH-C24TV-E1, MUH-C18TV-E1, MUH-C24TV-E1 Service Manual

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

HFC	No. OB279
utilized

SERVICE MANUAL	R407C

Wireless type Model

MSH-C18TV - E1 (WH) MSH-C24TV - E1 (WH)

·MUH-C18TV E1-

·MUH-C24TV E1-

CONTENTS

1. TECHNICAL CHANGES ················

2. PART NAMES AND FUNCTIONS············

3. SPECIFICATION····················

4. NOISE CRITERIA CURVES ···············

5. OUTLINES AND DIMENSIONS ·············

6. WIRING DIAGRAM··················

MSH-C18TV - E1

MSH-C24TV - E1

7. REFRIGERANT SYSTEM DIAGRAM ··········

8. PERFORMANCE CURVES ···············

9. MICROPROCESSOR CONTROL ············

10. SERVICE FUNCTIONS·················

11. TROUBLESHOOTING ·················

12. DISASSEMBLY INSTRUCTIONS············

13. PARTS LIST······················

14. OPTIONAL PARTS···················

1 TECHNICAL CHANGES

MSH-C18SV - E1 MSH-C18TV - E1

1.Rated voltage has changed to 230V.

2.Remote controller has changed.

•SLEEP MODE function has been removed.

•ECONO COOL operation has added.

•SWING button has been removed, but SWING MODE function has available by VANE CONTROL button.

3.Indoor electronic control P.C. board has changed.

MSH-C24TV - E1

New model

MUH-C18SV - E1 MUH-C18TV - E1

1.Path of heat exchanger has changed.

2.Temperature of defrosting control has changed. (-3: -2.7:)

3.Capillary tube has changed.

[{3.0 o {1.6 o 750 (2pcs) {3.0 o {1.4 o 600 (2pcs), {3.0 o {2.0 o 500 {3.0 o {2.0 o 850, {3.0 o {2.0 o 350 has removed.]

4.Refrigerant filling capacity has changed. (1.70kg 1.60kg)

MUH-C24TV - E1

New model

2

INFORMATION FOR THE AIR CONDITIONER WITH R-407C REFRIGERANT

This room air conditioner adopts HFC refrigerant (R407C) which will never destroy the ozone layer. Pay attention to following points.

1Take sufficient care not to allow water and other contaminations to enter the R407C refrigerant during storage and installation, since it is more susceptible to contaminations than HCFC (R22) refrigerant.

2 Clean refrigerant pipings should be used.

3Composition change may occur in R407C since it is a mixed refrigerant. When charging, charge liquid refrigerant to prevent composition change.

4Be especially careful when managing the tools.

If dust, dirt, or water mixes in the refrigerant cycle, it may cause decrease of performance.

			New refrigerant	Previous refrigerant
	Refrigerant		R407C	R22
	Composition (Ratio)		R32: R125: R134a (23%:25%:52%)	HCFC22 (100%)
	Refrigerant handling		Non-azeotropic refrigerant	Single refrigerant
	Chlorine		Not included	Included
Refrigerant	Safety group (ASHRAE)		A1/A1	A1
	Saturated steam density [25:](Kg/K)		42.5	44.4
	Molecular weight		86.2	86.5
	Boiling point (:)		-43.6	-40.8
	Steam pressure [25:](Mpa [Gauge])		0.9177	0.94
	Combustibility		Non combustible	Non combustible
	ODP w1		0	0.055
	GWP w2		1530	1700
	Refrigerant charge method		From liquid phase in cylinder	Gas phase
	Additional charge on leakage		Impossible	Possible
Lubricant	Kind		Incompatible oil	Compatible oil
	Color		Non	Light yellow
	Smell		Non	Non
w1 :Ozone Destruction Parameter		: based on CFC11
w2 :Global Warmth Parameter		: based on CO2

Compressor

New Specification

Previous Specification

The incompatible lubricant easily separates from refrigerant

Since refrigerant and lubricant are compatible each other,

and makes the layer in the upper inside the suction muffler.

lubricant returns to the compressor through the lower

The higher position of the returning oil hole enables to return

position returning oil hole.

the lubricant of the upper layer to the compressor.

Suction muffler

Suction muffler

Returning oil hole

Compressor

Compressor

Lubricant

Returning oil hole

Refrigerant

Lubricant and Refrigerant

Conversion chart of refrigerant temperature and pressure

(MPa[Gauge])

	4.0
pressure	3.5
								R407C
	2.5
liquid	3.0							R22
	2.0															NOTE : The unit of pressure has been changed to MPa on the
Saturated	1.5
																international system of units(SI unit system).
	1.0															The conversion factor is: 1(MPa[Gauge]) =10.2(kgf/f[Gauge])
	0.5
	0.0
	-0.5
	-30		-20 -10 0 10 20 30 40 50 60 (:)

3

1.Tools dedicated for the air conditioner with R407C refrigerant

The following tools are required for R407C refrigerant. Some R22 tools can be substituted for R407C tools. Do not use tools that are used with R22 refrigerant in order to avoid mixing oils.

	R407C tools	Can R22 tools be used?		Description
	Gauge manifold	No	A gauge manifold with a sight glass is recommended for charging the
			liquid refregerant.
	Charge hose	No	Hose material have been changed to improve the pressure
			resistance.
	Gas leak detector	No	Dedicated for HFC refrigerant.
	Torque wrench	Yes
	Flare tool	Yes
	Vacuum pump	New	Provided to prevent the back flow of oil. This adapter enables you to use
	adapter		existing vacuum pumps.
	Electronic scale for	New	Use the electronic control scale for measuring the R407C.
	refrigerant charging

2.Refrigerant piping

Do not use copper pipes which are broken, deformed or discoloured.

In addition, be sure that the inner surfaces of the pipes are clean, free of hazardous sulfur and oxides, or have no dust/ dirt, shaving particles, oil, moisture or any other contamination.

•If there is a large amount of residual oil inside the piping and joints, deterioration of the refrigerant oil will result.

3.Refrigerant oil

Apply the specific refrigeration oil (accessories) to the flare and the union seat surfaces.

4.Air purge

Use the vacuum pump for air purge to protect environments, and to avoid changing the composition of refrigerant.

5.Additional charge

For additional charging, charge the refrigerant with liquid phase slowly using a gas cylinder. If the refrigerant is charged with gas phase, the composition of refrigerant will change. In this case, ability of the refrigerating cycle decreases or normal operation can be impossible.

If liquid refrigerant is rapidly charged at once, the compressor may be locked.

NOTE: 1. The R407C is mixed refrigerant which consist of three different kinds of evaporative temperature. As a result, the R407C occurs the change of composition.

2.Additional refrigerant charge has been changed by change of refrigerant.(R22 R407C) R22 : <MUH-18 type> 50g/m R407C : <MUH-C18TV> 35g/m

:<MUH-24 type> 65g/m R407C : <MUH-C24TV> 45g/m

Union

		Stop valve
Indoor unit	Liquid pipe
Refrigerant	Gas pipe	Outdoor unit
gas cylinder
operating	Service port
valve
	Gage manifold
	Charge hose
	Refrigerant gas cylinder
	for R407C with siphon
	Refrigerant (liquid)
	Electronic scale for
	refrigerant charging

4

2 PART NAMES AND FUNCTIONS

INDOOR UNIT

MSH-C18TV - E1

MSH-C24TV - E1

Front panel

(When the grille is open)

OUTDOOR UNIT
MUH-C18TV - E1	MUH-C24TV - E1
	Air inlet
	(back and side)	Air inlet	Air outlet
	Piping
	Drainage hose
	Air outlet
	Drain outlet
ACCESSORIES
Indoor unit
		MSH-C18TV- E1
		MSH-C24TV- E1
1	Installation plate		1
2	Installation plate fixing screw 4 o 25 mm		6
3	Remote controller mouting hardware		1
4	Fixing screw for 3 o 3.5 o 1.6 mm (Black)		2
5	Battery (AAA) for remote controller		2
6	Wireless remote controller		1
7	Felt tape (Used for left or left-rear piping)		1
Outdoor unit
		MUH-C18TV- E1	MUH-C24TV- E1
8	Drain socket	1	1
9	Drain cap {33	2	6
	Drain cap {16	1	—
	5

REMOTE CONTROLLER

MSH-C18TV - E1

MSH-C24TV - E1

Signal transmitting section

Operation display section

OPERATE /STOP (ON /OFF)button

		PM
		AM
ON/OFF	TOO	TOO
	WARM	COOL

TEMPERATURE buttons

Open the front lid.

VANE CONTROL button

OPERATION SELECT button ECONO COOL button

RESET button

AM

ON/OFF	TOO	TOO
	WARM	COOL

FAN	STOP
I FEEL COOL
VANE	START
HEAT DRY
MODE	HR.
ECONO COOL	MIN.
RESET CLOCK

FAN SPEED CONTROL button

OFF-TIMER button

ON-TIMER button

HR. button MIN. button (TIME SET button)

CLOCK SET button

6

3 SPECIFICATION

Indoor model

Function

Power supply

	Capacity	Capacity		kW
		Dehumidification		r/h
		Air flow(High)		K /h
		Power outlet		A
		Running current		A
	Electrical data	Power input		W
		Auxiliary heater		A(kW)
		Power factor		%
		Starting current		A
		Fan motor current		A
	Coefficient of performance(C.O.P)
	Fan motor	Model		"
		Winding
		resistance(at20:)
		Dimensions WOHOD		mm
		Weight		kg
		Air direction
	Special remarks	Sound level (High)		dB
		Fan speed (High)		rpm
		Fan speed	regulator
		Thermistor RT11(at25:)		k"
		Thermistor RT12(at25:)		k"
		Outdoor model
	Capacity Air flow			K /h
	Electrical data	Fan motor current		A
		Compressor motor current		A
	Compressor	Model
		Output		W
		Winding		"
		resistance(at20:)
	Fan motor	Model		"
		Winding
		resistance(at20:)
		Dimensions WOHOD		mm
		Weight		kg
		Sound level		dB
		Fan speed (High)		rpm
	Special remarks	Fan speed regulator
		Refrigerant filling		kg
		capacity(R407C)
		Refrigerating oil (Model)		cc
		Thermistor	RT61(at0:)	k"
		Thermistor	RT63(at0:)	k"

MSH-C18TV - E1		MSH-C24TV - E1
Cooling	Heating	Cooling	Heating
Single phase			Single phase
230V, 50Hz			230V, 50Hz
5.2	6.0	6.3	7.5
2.4	—	3.0	—
756			816
15			25
9.4	9.7	12.8	13.7
2,110	2,180	2,850	3,020
—			—
98		97	96
55			83
0.25			0.29
2.46	2.75	2.21	2.48
RA4V27-EF			RA4V27-EE
WHT-BLK 183.8		WHT-BLK 183.3
BLK-RED 250.5		BLK-RED 250.5
1,015O320O190		1,015O320O190
14			14
5			5
42			45
1,180			1,260
3			3
10			10
10			10
MUH-C18TV - E1		MUH-C24TV - E1
2,196			2,700
8.76	9.06	11.93	12.87
0.39			0.58
PE-36VPEHT		NE-47VMHHT
1,600			2,200
C-R 1.06			C-R 0.67
C-S 2.03			C-S 2.02
RA6V50-OG			RA6V85-AA
WHT-BLK 116.4		WHT-BLK 62.7 BLK-YLW 30.2
BLK-RED 111.0		YLW-RED 62.9
850o605o290			870o850o295
54			71
52			53
828			735
1			2
1.60			2.00
1,100 (NEO22)			1,400 (NEO22)
33.18			33.18
—			33.18

NOTE:Test conditions are based on JIS C 9612.

Cooling : Indoor	Dry-bulb temperature 27°C	/ Wet-bulb temperature 19°C
Outdoor	Dry-bulb temperature 35°C	/ Wet-bulb temperature (24°C)
Heating : Indoor	Dry-bulb temperature 20°C	/ Wet-bulb temperature
Outdoor	Dry-bulb temperature 7°C	/ Wet-bulb temperature 6°C

7

4 NOISE CRITERIA CURVES

MSH-C18TV- E1

MSH-C24TV- E1

NOTCH SPL(dB(A))

LINE

High 42

NOTCH SPL(dB(A))

LINE

High 45

Test conditions,	Test conditions,
Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19:	Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19:
Heating : Dry-bulb temperature 20: Wet-bulb temperature 15.5:	Heating : Dry-bulb temperature 20: Wet-bulb temperature 15.5:

BAR	90									BAR	90
MICRO	80									MICRO	80
0.0002	70								NC-70	0.0002	70								NC-70
dB re	60									dB re	60
LEVEL,										LEVEL,
									NC-60										NC-60
	50
PRESSURE										PRESSURE	50
									NC-50										NC-50
	40										40
									NC-40										NC-40
SOUND										SOUND
	30										30
BAND									NC-30	BAND									NC-30
	20	APPROXIMATE									20	APPROXIMATE
OCTAVE										OCTAVE
		THRESHOLD OF										THRESHOLD OF
		HEARING FOR							NC-20			HEARING FOR							NC-20
		CONTINUOUS										CONTINUOUS
	10	NOISE									10	NOISE
		63	125	250	500	1000	2000	4000	8000			63	125	250	500	1000	2000	4000	8000

BAND CENTER FREQUENCIES, Hz	BAND CENTER FREQUENCIES, Hz
MUH-C18TV- E1	MUH-C24TV- E1

NOTCH SPL(dB(A))

LINE

High 52

NOTCH SPL(dB(A))

LINE

High 53

Test conditions,	Test conditions,
Cooling : Dry-bulb temperature 35: Wet-bulb temperature 24:	Cooling : Dry-bulb temperature 35: Wet-bulb temperature 24:
Heating : Dry-bulb temperature 7: Wet-bulb temperature 6:	Heating : Dry-bulb temperature 7: Wet-bulb temperature 6:

BAR	90									BAR	90
MICRO	80									MICRO	80
0.0002	70								NC-70	0.0002	70								NC-70
dB re	60									dB re	60
LEVEL,										LEVEL,
									NC-60										NC-60
	50
PRESSURE										PRESSURE	50
									NC-50										NC-50
	40										40
									NC-40										NC-40
SOUND										SOUND
	30										30
BAND									NC-30	BAND									NC-30
	20	APPROXIMATE									20	APPROXIMATE
OCTAVE										OCTAVE
		THRESHOLD OF										THRESHOLD OF
		HEARING FOR							NC-20			HEARING FOR							NC-20
		CONTINUOUS										CONTINUOUS
	10	NOISE									10	NOISE
		63	125	250	500	1000	2000	4000	8000			63	125	250	500	1000	2000	4000	8000

BAND CENTER FREQUENCIES, Hz

BAND CENTER FREQUENCIES, Hz

8

5 OUTLINES AND DIMENSIONS

MSH-C18TV - E1

MSH-C24TV - E1

INDOOR UNIT

995

1015

320

50

775

58

19

162

Wireless remote controller

MUH-C18TV - E1

OUTDOOR UNIT

	Drainage	355	20
		350
	hole [16.2
		Air in
	35
248	90
	Air in
	Drainage	Air out
	3holes [33

605

292
20	183
	500
	850

				Unit: mm
	4holes 11 20		Indoor unit
	150	648	217
60	40			20
	450		254	297
	450
	438		352	3
	Installation plate		Wall hole [75
	190	5	Installation plate
			Liquid line [8-0.5m
			Gas line [12-0.43m
	Air in		{Insulation [50 O.D
			[28 I.D
190	Air out		Drain hose [16
			Insulation [28

Power supply cord

Lead to right 2m

Lead to left 1m

	or more
	100mm	or	more
100mm		100mm
	or
	more

				or	more	350mm	or
								more
290	310	345	500mm

50

	30	Service panel
			Liquid refrigerant
			pipe joint
			Refregerant pipe
			(flared) [6.35
		-	-
		30	35
157	100	Gas refregerant

pipe joint

161Refregerant pipe (flared) [15.88

74

9

MUH-C24TV- E1													Unit: mm
OUTDOOR UNIT
	185	500	185							Outdoor Unit-Necessary surrounding clearance
				17									200
		Air intake	27.539.5
				330		362						Note:Allow adequate
	Air intake										10	10	upper clearance
											Front opening
	Air outlet			15
		870									10	500	150
	302		Terminal block for indoor and outdoor unit connection									Service space
											500
	Outlet guide
	installation hole
			Handle for moving
			Service panel
Handle for moving
A	524							850
									Refrigerant-pipe flared
	441	468	445		450		553		connection [15.88		45
									Refrigerant-pipe flared
	179								connection [9.52
	40	524	60					Knock out hole		60	53
											Knock out holes for
								for front piping
								(refrigerant,drainage		120 power line 2-[27
	2-12o23 Oval holes							and wiring)
			104
	(standard bolt M10)
			33	42		45		Knock out hole
	Drainage hole [33							for right piping
								(refrigerant,drainage
			Bottom					and wiring)
			piping hole

Drainage hole [33

Handle for moving

138

95

Rear piping hole

2-U-shaped notched holes

7

295

24

A

Side air intake

Rear fresh air intake

23

33

Outdoor Unit-Necessary surrounding clearance

(Concentrated installation) The upper side must be open.

	200	R6
100		17
	10

12

For 10 units or less

1000

R20	R20

80

25 max.

Standard bolt length

65

Front right piping holesdetail figures

10

6 WIRING DIAGRAM

MSH-C18TV - E1 MODEL WIRING DIAGRAM

INDOOR UNIT

TO OUTDOOR	L TB
UNIT		BRN									CN
CONNECTING		BRN
									HIC1	IC141	112
12V	3		RED
										NR11
	N	BLU						4			CN
	BLU		F12				CN201	3	52C		121
				BLU
230V~	2	WHT			2	BLU	3		TRANS	C11	CN211
				BLU	1		1				4
									F11
		BRN									2
POWER SUPPLY				LD1							1
CORD			GRN/YLW		CN	CN	CN				CN
~/N 230V		DSAR
					102	151	101		ELECTRONIC CONTROL P.C. BOARD 111
50Hz
PE						5
						3	3
						MV
CIRCUIT BREAKER			GRN/YLW		DISPLAY		RECEIVER
					P.C. BOARD		P.C. BOARD		REMOTE
									CONTROLLER

RT12

3BRN YLW GRY

WHT MF RED

BLK

RT11

SYMBOL	NAME	SYMBOL	NAME		SYMBOL	NAME
C11	INDOOR FAN CAPACITOR	IC141	HYBRID IC		RT12	INDOOR COIL THERMISTOR
DSAR	SURGE ABSORBER	MF	INDOOR FAN MOTOR (INNER FUSE)		TB	TERMINAL BLOCK
F11	FUSE (3.15A)	MV	VANE MOTOR		52C	CONTACTOR
F12	THERMAL FUSE (93:)	NR11	VARISTOR
HIC1	DC/DC CONVERTER	RT11	ROOM TEMPERATURE THERMISTOR
NOTES: 1.About the outdoor side electric wiring refer to the outdoor unit electric wiring diagram for servicing.						VG79B068H01
2.Use copper conductors only. (For field wiring)
3.Symbols below indicate.

: Terminal block

: Connector

MUH-C18TV - E1

MODEL WIRING DIAGRAM

OUTDOOR UNIT

21S4

52C

RT61

BLK BLK

VLT

VLT

MF

TB

CN730

12V

CN721

CN720

3

RED

CN661

FROM INDOOR UNIT CONNECTING

1

WHT

F61

X62

RED

1 RED

N

BLU

SR61

1

TAB21

2

WHT

ORN

IC881

2

230V~

2

3

3 WHT

TRANS

4

BLK

4 BLK

TAB20

X62

CN711

WHT

C65

DEICER P.C. BOARDNR61

GRN/YLW

DSAR

WHT

52C

WHT

NO

COM

C

BLU

C1

RED

MC

R

S

BLK

SYMBOL

NAME

SYMBOL

NAME

SYMBOL

NAME

C1

COMPRESSOR CAPACITOR

MC

COMPRESOR (INNER PROTECTOR)

TB

TERMINAL BLOCK

C65

OUTDOOR FAN CAPACITOR

MF

OUTDOOR FAN MOTOR (INNER PROTECTOR)

X62

R.V. COIL RELAY

DSAR

SURGE ABSORBER

NR61

VARISTOR

21S4

R.V. COIL

F61

FUSE (2A)

RT61

DEFROST THERMISTOR

52C

COMPRESSOR CONTACTOR

IC881

DC/DC CONVERTER

SR61

SOLID STATE RELAY

NOTES: 1.About the indoor side electric wiring refer to the indoor unit electric wiring diagram for servicing.		SG79B966H01
2.Use copper conductors only. (For field wiring)
3.Symbols below indicate.
: Terminal block	: Connector

11

MSH-C24TV - E1 MODEL WIRING DIAGRAM

INDOOR UNIT

	TO OUTDOOR
	UNIT
	CONNECTING
	12V	TB	RED
		3
		N	BLU
		BLU	F12
	230V~	2
			WHT
		L
		BRN
	POWER SUPPLY		WHT 1
	CORD		DSAR GRN/YLW
	~/N 230V
	50Hz
	PE
	CIRCUIT BREAKER
		GRN/YLW

						CN		RT12
				HIC1		112
					IC141
						CN		RT11
					NR11	111
BLU	2		3	52C				YLW
						121
			CN201	4		CN	3	BRN
BLU 1			1	3	C11			GRY
				TRANS		CN211		WHT MF
				F11		4		RED
						2
								BLK
		WHT				1
LD1	CN	CN	CN	ELECTRONIC CONTROL P.C. BOARD
	102	151	101
		5
		3		3
		MV
		DISPLAY	RECEIVER
		P.C. BOARD	P.C. BOARD	REMOTE

CONTROLLER

SYMBOL	NAME		SYMBOL	NAME		SYMBOL	NAME
C11	INDOOR FAN CAPACITOR		IC141	HYBRID IC		RT12	INDOOR COIL THERMISTOR
DSAR	SURGE ABSORBER		MF	INDOOR FAN MOTOR (INNER FUSE)		TB	TERMINAL BLOCK
F11	FUSE (3.15A)		MV	VANE MOTOR		52C	CONTACTOR
F12	THERMAL FUSE (93;)		NR11	VARISTOR
HIC1	DC/DC CONVERTER		RT11	ROOM TEMPERATURE THERMISTOR
NOTES: 1.About the outdoor side electric wiring refer to the outdoor unit electric wiring diagram for servicing.							VG79B069H01
2.Use copper conductors only. (For field wiring)
3.Symbols below indicate.
	: Terminal block	: Connector
MUH-C24TV - E1		MODEL WIRING DIAGRAM

OUTDOOR UNIT

FROM INDOOR UNIT CONNECTING

MF

SYMBOL

NAME

RT61

RT63

CZ

CZ SURGE ABSORBER

YLW BLK WHT ORN RED

C1

COMPRESSOR CAPACITOR

6

5

4

3

2

1

RED

C2

OUTDOOR FAN CAPACITOR

YLW

BLK

WHT

ORN

C2

CN661

CN662

1

2

3 CN711

CN721

DSAR

SURGE ABSORBER

SR62

1

F61

FUSE (3.15A)

SR61

X62

2

21S4

MC

COMPRESSOR (INNER PROTECTOR)

COM

NO

TAB52

3

X62

X52

MF

OUTDOOR FAN MOTOR (INNER PROTECTOR)

COM

NO

NR61

VARISTOR

F61

1

X52

NR61

T61

3

RT61

DEFROST THERMISTOR

TB

CN730

12V

DEICER P.C. BOARD

5

RED

BLU WHT

BLU

3

RT63

AMBIENT TEMPERATURE THERMISTOR

N

SR61

SOLID STATE RELAY

230V ~

2

SR62

SOLID STATE RELAY

	WHT				C1			TB	TERMINAL BLOCK
		BLU				RED	S	T61
									TRANSFORMER
							C
GRN/YLW	DSAR	WHT	52C	WHT		BLK	MC	X62	R. V. COIL RELAY
		1		2
			CZ				R	X52	CONTACTOR
		WHT				WHT
		BLU			A2 52C	A1		21S4	R. V. COIL

NOTES: 1.Use copper conductors only (For field wiring).	52C	COMPRESSOR CONTACTOR
2.Since the indoor and outdoor unit connecting wires have polarity, connect them according to the numbers (3,N,2). SG79J155H01

3.Symbols below indicate.
:Terminal block,	:Connector

12

7 REFRIGERANT SYSTEM DIAGRAM

	Unit:mm
MSH-C18TV - E1	MUH-C18TV - E1

INDOOR UNIT

Indoor	Indoor coil
	thermistor
heat	RT12
exchanger	Distributor

Refrigerant pipe	[15.88	4- way valve	OUTDOOR UNIT
(with heat insulator)
	Muffler
	Stop valve		Strainer	Outdoor
	(with service port)
			Defrost	heat
Flared connection				exchanger
			thermistor
			RT61

Room temperature thermistor

RT11

Flared connection

Strainer

Stop valve

Refrigerant pipe [6.35 (with heat insulator)

MSH-C24TV - E1

Compressor

Capillary tube [3.0o[2.0o850

Capillary tube [3.0o[1.4o600 (2 pcs)

R.V. coil

Heating ON

Cooling OFF

Check valve

Refrigerant flow in cooling Refrigerant flow in heating

Unit:mm

MUH-C24TV - E1

INDOOR UNIT		Refrigerant pipe	[15.88	4- way valve	OUTDOOR UNIT
		(with heat insulator)
			Muffler
	Indoor coil
Indoor	thermistor		Stop valve
heat	RT12		(with service port)
exchanger	Distributor	Flared connection		Strainer	Outdoor
					heat
					exchanger

Room temperature
thermistor
RT11		Compressor	Defrost
			thermistor
			RT61
Flared connection
			Ambient
			tempera-
Strainer			ture
			thermistor
			RT63
Stop valve	Receiver	Capillary tube	R.V. coil
		[3.0X[2.0X450	Heating ON
Refrigerant pipe [9.52
			Cooling OFF
(with heat insulator)		Refrigerant flow in cooling
		Refrigerant flow in heating
13

MAX. REFRIGERANT PIPING LENGTH

Model

MSH-C18TV - MUH-C18TV -

MSH-C24TV - MUH-C24TV -

	Refrigerant piping	Piping size O.D : mm		Length of connecting pipe : m
	Max. length : m
	A	Gas	Liquid	Indoor unit	Outdoor unit
E1			6.35
				Gas 0.43	Gas 0
E1
15		15.88
				Liquid 0.5	Liquid 0
E1			9.52
E1

MAX. HEIGHT DIFFERENCE

Indoor unit

wMax. Height	Refrigerant Piping
difference: 5m	Max. Length
	A

Outdoor unit

wHeight difference should be within 5m

regardless of which unit, indoor or outdoor position is high.

ADDITIONAL REFRIGERANT CHARGE(R407C : g)

Model		Outdoor unit precharged		Refrigerant piping length (one way)
			7m		10m		15m
MSH-C18TV -	E1	1600	0		105		280
MUH-C18TV -	E1
			Calculation : Xg=35g/m (Refrigerant piping length (m)–7)
Model		Outdoor unit precharged		Refrigerant piping length (one way)
			7m		10m		15m
MSH-C24TV -	E1	2000	0		135		360
MUH-C24TV -	E1

Calculation : Xg=45g/m (Refrigerant piping length (m)–7)

14

8 PERFORMANCE CURVES

MSH-C18TV - E1 MUH-C18TV - E1

MSH-C24TV - E1 MUH-C24TV - E1

The standard data contained in these specifications apply only to the operation of the air conditioner under normal conditions, since operating conditions vary according to the areas where these units are installed. The following information has been provided to clarify the operating characteristics of the air conditioner under the conditions indicated by the performance curve.

(1)GUARANTEED VOLTAGE

198 ~ 264V, 50Hz

(2)AIR FLOW

	Air flow should be set at MAX.
	(3) MAIN READINGS			}
	(1)	Indoor intake air wet-bulb temperature :	°CWB
	(2)	Indoor outlet air wet-bulb temperature :	°CWB		Cooling
	(3)	Outdoor intake air dry-bulb temperature :	°CDB
	(4)	Total input:	W	}
	(5)	Indoor intake air dry-bulb temperature :	°CDB
	(6)	Outdoor intake air wet-bulb temperature :	°CWB		Heating
	(7)	Total input :	W

Indoor air wet/dry-bulb temperature difference on the left side of the chart on this page and next page shows the difference between the indoor intake air wet/dry-bulb temperature and the indoor outlet air wet/dry-bulb temperature for your reference at service.

How to measure the indoor air wet-bulb/dry-bulb temperature difference

1.Attach at least 2 sets of wet-and dry-bulb thermometers to the indoor air intake as shown in the figure, and at least 2 sets of wet-and dry-bulb thermometers to the indoor air outlet. The thermometers must be attached to the position where air speed is high.

2.Attach at least 2 sets of wet-and dry-bulb thermometers to the outdoor air intake. Cover the thermometers to prevent direct rays of the sun.

3.Check that the air filter is cleaned.

4.Open windows and doors of room.

5.Press the EMERGENCY OPERATION switch once(twice) to start the EMERGENCY COOL(HEAT) MODE.

6.When system stabilizes after more than 15 minutes, measure temperature and take an average temperature.

7.10 minutes later, measure temperature again and check that the temperature does not change.

INDOOR UNIT

OUTDOOR UNIT

Wet-and dry-bulb thermometers

Wet-and dry-bulb thermometers

12.5								14.9
11.4										13.5
10.4									12.2
9.3						11.0
8.3							9.8
7.4					8.6
	E1			E1
	MSH-C18TV -			MSH-C24TV -

15

Dry-bulb temperature

20

25

30

2 Air flow should be set at MAX.

31.1 36.1

28.7 33.3

26.330.5

24.027.7

21.625.0

19.222.2

16.819.4

14.4 16.6

E1	E1
MSH-C18TV -	MSH-C24TV -

NOTE:The above curves are for the heating operation without any frost and defrosting.

OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT COOL operation

1 Both indoor and outdoor unit are under the same temperature/humidity condition. Relative humidity(%)

50

60

70

3The unit of pressure has been changed to MPa on the international system of units(SI unit system). The conversion factor is : 1(MPa [Gauge]) =10.2(kgf/f [Gauge])

(kgf/F[Gauge])(MPa[Gauge]) MUH-C18TV - E1

	7	0.7
pressurelow											230V
	5	0.5
Outdoor	6	0.6
	4		0.4
			0.3
	3
					18 20				30 32 35(:)
		15					25
					50		60		70(%)

Ambient temperature(˚C)

Ambient humidity(%)

(kgf/F[Gauge])(MPa[Gauge]) MUH-C24TV - E1

	7		0.7
pressure		0.6
	6
low		0.5							230V
	5
Outdoor		0.4
	4
		0.3
	3		0.2
									30 32 35(:)
		15 18			20		25
					50		60		70(%)

Ambient temperature(˚C)

Ambient humidity(%)

16

Outdoor unit current (A)

Outdoor unit current (A)

MUH-C18TV - E1

11

10

230V

9

8

7

6

15 18 20	25	30 32 35(:)
50	60	70(%)

Ambient temperature(˚C)

Ambient humidity(%)

MUH-C24TV - E1

13

12

230V

11

10

9

8

15 18 20	25	30 32 35(:)
50	60	70(%)

Ambient temperature(˚C)

Ambient humidity(%)

HEAT operation

Condition indoor:Dry bulb temperature 20.0°C Wet bulb temperature 14.5°C

Outdoor:Dry bulb temperature 7,15,20°C

Wet bulb temperature 6,12,14.5°C

MUH-C18TV - E1

13

(A)
current	12
											230V
unit	11
Outdoor
	10
	9
								20 21				25(:)
	5		7	10		15
			Ambient temperature(˚C)
	16			MUH-C24TV - E1
(A)
	15
current	14
											230V
unit
Outdoor	13
	12
								20 21				25(:)
	5		7	10		15

Ambient temperature(˚C)

17

PERFORMANCE DATA COOL operation

MSH-C18TV - E1 : MUH-C18TV - E1 (230V)

CAPACITY : 5.2(KW) SHF : 0.68 INPUT : 2110(W)

											OUTDOOR			DB(:)
INDOOR	INDOOR			21						25						27					30
DB(:)	WB(:)	Q	SHC		SHF	INPUT		Q	SHC		SHF	INPUT		Q	SHC		SHF	INPUT	Q	SHC		SHF	INPUT
21	18	6.11	3.06		0.50	1688		5.85	2.93		0.50	1772		5.62	2.81		0.50	1857	5.41	2.70		0.50	1941
21	20	6.37	2.42		0.38	1772		6.11	2.32		0.38	1878		5.93	2.25		0.38	1920	5.72	2.17		0.38	2005
22	18	6.11	3.30		0.54	1688		5.85	3.16		0.54	1772		5.62	3.03		0.54	1857	5.41	2.92		0.54	1941
22	20	6.37	2.68		0.42	1772		6.11	2.57		0.42	1878		5.93	2.49		0.42	1920	5.72	2.40		0.42	2005
22	22	6.63	1.99		0.30	1836		6.40	1.92		0.30	1952		6.24	1.87		0.30	2005	5.98	1.79		0.30	2089
23	18	6.11	3.54		0.58	1688		5.85	3.39		0.58	1772		5.62	3.26		0.58	1857	5.41	3.14		0.58	1941
23	20	6.37	2.93		0.46	1772		6.11	2.81		0.46	1878		5.93	2.73		0.46	1920	5.72	2.63		0.46	2005
23	22	6.63	2.25		0.34	1836		6.40	2.17		0.34	1952		6.24	2.12		0.34	2005	5.98	2.03		0.34	2089
24	18	6.11	3.79		0.62	1688		5.85	3.63		0.62	1772		5.62	3.48		0.62	1857	5.41	3.35		0.62	1941
24	20	6.37	3.19		0.50	1772		6.11	3.06		0.50	1878		5.93	2.96		0.50	1920	5.72	2.86		0.50	2005
24	22	6.63	2.52		0.38	1836		6.40	2.43		0.38	1952		6.24	2.37		0.38	2005	5.98	2.27		0.38	2089
24	24	6.97	1.81		0.26	1920		6.71	1.74		0.26	2026		6.55	1.70		0.26	2089	6.34	1.65		0.26	2194
25	18	6.11	4.03		0.66	1688		5.85	3.86		0.66	1772		5.62	3.71		0.66	1857	5.41	3.57		0.66	1941
25	20	6.37	3.44		0.54	1772		6.11	3.30		0.54	1878		5.93	3.20		0.54	1920	5.72	3.09		0.54	2005
25	22	6.63	2.78		0.42	1836		6.40	2.69		0.42	1952		6.24	2.62		0.42	2005	5.98	2.51		0.42	2089
25	24	6.97	2.09		0.30	1920		6.71	2.01		0.30	2026		6.55	1.97		0.30	2089	6.34	1.90		0.30	2194
26	18	6.11	4.28		0.70	1688		5.85	4.10		0.70	1772		5.62	3.93		0.70	1857	5.41	3.79		0.70	1941
26	20	6.37	3.69		0.58	1772		6.11	3.54		0.58	1878		5.93	3.44		0.58	1920	5.72	3.32		0.58	2005
26	22	6.63	3.05		0.46	1836		6.40	2.94		0.46	1952		6.24	2.87		0.46	2005	5.98	2.75		0.46	2089
26	24	6.97	2.37		0.34	1920		6.71	2.28		0.34	2026		6.55	2.23		0.34	2089	6.34	2.16		0.34	2194
26	26	7.18	1.58		0.22	2026		6.97	1.53		0.22	2131		6.86	1.51		0.22	2194	6.66	1.46		0.22	2258
27	18	6.11	4.52		0.74	1688		5.85	4.33		0.74	1772		5.62	4.16		0.74	1857	5.41	4.00		0.74	1941
27	20	6.37	3.95		0.62	1772		6.11	3.79		0.62	1878		5.93	3.68		0.62	1920	5.72	3.55		0.62	2005
27	22	6.63	3.32		0.50	1836		6.40	3.20		0.50	1952		6.24	3.12		0.50	2005	5.98	2.99		0.50	2089
27	24	6.97	2.65		0.38	1920		6.71	2.55		0.38	2026		6.55	2.49		0.38	2089	6.34	2.41		0.38	2194
27	26	7.18	1.87		0.26	2026		6.97	1.81		0.26	2131		6.86	1.78		0.26	2194	6.66	1.73		0.26	2258
28	18	6.11	4.77		0.78	1688		5.85	4.56		0.78	1772		5.62	4.38		0.78	1857	5.41	4.22		0.78	1941
28	20	6.37	4.20		0.66	1772		6.11	4.03		0.66	1878		5.93	3.91		0.66	1920	5.72	3.78		0.66	2005
28	22	6.63	3.58		0.54	1836		6.40	3.45		0.54	1952		6.24	3.37		0.54	2005	5.98	3.23		0.54	2089
28	24	6.97	2.93		0.42	1920		6.71	2.82		0.42	2026		6.55	2.75		0.42	2089	6.34	2.66		0.42	2194
28	26	7.18	2.15		0.30	2026		6.97	2.09		0.30	2131		6.86	2.06		0.30	2194	6.66	2.00		0.30	2258
29	18	6.11	5.01		0.82	1688		5.85	4.80		0.82	1772		5.62	4.61		0.82	1857	5.41	4.43		0.82	1941
29	20	6.37	4.46		0.70	1772		6.11	4.28		0.70	1878		5.93	4.15		0.70	1920	5.72	4.00		0.70	2005
29	22	6.63	3.85		0.58	1836		6.40	3.71		0.58	1952		6.24	3.62		0.58	2005	5.98	3.47		0.58	2089
29	24	6.97	3.21		0.46	1920		6.71	3.09		0.46	2026		6.55	3.01		0.46	2089	6.34	2.92		0.46	2194
29	26	7.18	2.44		0.34	2026		6.97	2.37		0.34	2131		6.86	2.33		0.34	2194	6.66	2.26		0.34	2258
30	18	6.11	5.25		0.86	1688		5.85	5.03		0.86	1772		5.62	4.83		0.86	1857	5.41	4.65		0.86	1941
30	20	6.37	4.71		0.74	1772		6.11	4.52		0.74	1878		5.93	4.39		0.74	1920	5.72	4.23		0.74	2005
30	22	6.63	4.11		0.62	1836		6.40	3.97		0.62	1952		6.24	3.87		0.62	2005	5.98	3.71		0.62	2089
30	24	6.97	3.48		0.50	1920		6.71	3.35		0.50	2026		6.55	3.28		0.50	2089	6.34	3.17		0.50	2194
30	26	7.18	2.73		0.38	2026		6.97	2.65		0.38	2131		6.86	2.61		0.38	2194	6.66	2.53		0.38	2258
31	18	6.11	5.50		0.90	1688		5.85	5.27		0.90	1772		5.62	5.05		0.90	1857	5.41	4.87		0.90	1941
31	20	6.37	4.97		0.78	1772		6.11	4.77		0.78	1878		5.93	4.62		0.78	1920	5.72	4.46		0.78	2005
31	22	6.63	4.38		0.66	1836		6.40	4.22		0.66	1952		6.24	4.12		0.66	2005	5.98	3.95		0.66	2089
31	24	6.97	3.76		0.54	1920		6.71	3.62		0.54	2026		6.55	3.54		0.54	2089	6.34	3.43		0.54	2194
31	26	7.18	3.01		0.42	2026		6.97	2.93		0.42	2131		6.86	2.88		0.42	2194	6.66	2.80		0.42	2258
32	18	6.11	5.74		0.94	1688		5.85	5.50		0.94	1772		5.62	5.28		0.94	1857	5.41	5.08		0.94	1941
32	20	6.37	5.22		0.82	1772		6.11	5.01		0.82	1878		5.93	4.86		0.82	1920	5.72	4.69		0.82	2005
32	22	6.63	4.64		0.70	1836		6.40	4.48		0.70	1952		6.24	4.37		0.70	2005	5.98	4.19		0.70	2089
32	24	6.97	4.04		0.58	1920		6.71	3.89		0.58	2026		6.55	3.80		0.58	2089	6.34	3.68		0.58	2194
32	26	7.18	3.30		0.46	2026		6.97	3.21		0.46	2131		6.86	3.16		0.46	2194	6.66	3.06		0.46	2258
NOTE	Q : Total capacity (kW)							SHF : Sensible heat factor						DB : Dry-bulb temperature
SHC : Sensible heat capacity (kW)							INPUT : Total power input (W) WB : Wet-bulb temperature

18