Mitsubishi Electric MUZ-HM24NA2 Owner's manual

Models

MUZ-HM09NA

-

U1

,

U8

MUZ-HM18NA

-

U1

MUZ-HM09NA2

-

U1

,

U8

MUZ-HM18NA2

-

U1

MUZ-HM12NA

-

U1

,

U8

MUZ-HM24NA

-

U1

MUZ-HM12NA2

-

U1

,

U8

MUZ-HM24NA2

-

U1

MUZ-HM15NA

-

U1

MUZ-HM15NA2

-

U1

HFC

utilized

R410A

NOTE:

RoHS compliant products have <G> mark on the spec name plate.

MUZ-HM24NA

PARTS CATALOG (OBB747)

SERVICE MANUAL

No. OBH747

REVISED EDITION-D

Indoor unit service manual

MSZ-HM•NA Series (OBH746)

CONTENTS

1. TECHNICAL CHANGES ··································· 3

2. PART NAMES AND FUNCTIONS ····················· 4

3. SPECIFICATION ················································ 5

4. OUTLINES AND DIMENSIONS ······················ 10

5. WIRING DIAGRAM ·········································· 12

6. REFRIGERANT SYSTEM DIAGRAM ············· 15

7. DATA ································································ 19

8. ACTUATOR CONTROL ··································· 32

9. SERVICE FUNCTIONS ··································· 33

10. TROUBLESHOOTING ····································· 34

11. DISASSEMBLY INSTRUCTIONS ···················· 59

OBH747 REVISED EDITION-C is void.

Revision D:

• Capacity corrections have been corrected [7-1. 2), 3)].

OUTDOOR UNIT

2

Use the speciﬁ ed refrigerant only

Never use any refrigerant other than that specified.

Doing so may cause a burst, an explosion, or fire when the unit is being used, serviced, or disposed of.

Correct refrigerant is specified in the manuals and on the spec labels provided with our products.

We will not be held responsible for mechanical failure, system malfunction, unit breakdown or accidents caused by

failure to follow the instructions.

Revision A:

• MUZ-HM09/12NA-

U8

, MUZ-HM09/12NA2-

U8

, MUZ-HM15/18NA-

U1

, MUZ-HM15/18NA2-

U1

and MUZ-HM24NA2-

U1

have

been added.

Revision B:

• 3. SPECIFICATION has been modified.

Revision C:

• MUZ-HM09/12NA

-

U1

, MUZ-HM09/12NA2

-

U1

have been added.

Revision D:

• Capacity corrections have been corrected [7-1. 2), 3)].

OBH747D

3

1

TECHNICAL CHANGES

MUZ-HM24NA

-

U1

1. New model

MUZ-HM09NA

-

U8

MUZ-HM09NA2

-

U8

MUZ-HM12NA

-

U8

MUZ-HM12NA2

-

U8

MUZ-HM15NA

-

U1

MUZ-HM15NA2

-

U1

MUZ-HM18NA

-

U1

MUZ-HM18NA2

-

U1

MUZ-HM24NA2

-

U1

1. New model

MUZ-HM09NA

-

U1

MUZ-HM09NA2

-

U1

MUZ-HM12NA

-

U1

MUZ-HM12NA2

-

U1

1. New model

OBH747D

4

MUZ-HM24NA MUZ-HM24NA2

Piping

Air outlet

Drain outlet

Air inlet

(back and side)

Drain hose

PART NAMES AND FUNCTIONS

2

MUZ-HM09NA MUZ-HM09NA2 MUZ-HM12NA MUZ-HM12NA2

MUZ-HM15NA MUZ-HM15NA2 MUZ-HM18NA MUZ-HM18NA2

Air outlet

Drain outlet

Piping

Drain hose

Air inlet

(back and side)

OBH747D

5

3

SPECIFICATION

Outdoor unit model

MUZ-HM09NA

-

U1

MUZ-HM09NA2

-

U1

MUZ-HM09NA

-

U8

MUZ-HM09NA2

-

U8

Capacity

Rated (Minimum~Maximum)

Cooling 1

Btu/h 9,000 ( 3,800 ~ 10,000 )

Heating 47 1

Btu/h 10,900 ( 4,500 ~ 11,800 )

Capacity

Rated (Maximum)

Heating 17 2

Btu/h 6,700 (7,200)

Power consumption

Rated (Minimum~Maximum)

Cooling 1

W 750 (240 - 850) 750 (205 - 850)

Heating 47 1

W 900 (240 - 1,000) 900 (255 - 1,000)

Power consumption

Rated (Maximum)

Heating 17 2

W 700 (780)

EER

1

[SEER]

3

Cooling 12.0 [ 18.0 ]

HSPF IV

4

Heating 10.0 [NA] / 8.5 [NA2]

COP Heating

1

3.55

Power factor

Cooling (208/230) % 87/87 84/84

Heating (208/230) % 90/90 90/89

Power supply V , phase , Hz 208/230 , 1 , 60

Max. fuse size (time delay) A 15

Min. circuit ampacity A 9 12

Fan motor F.L.A A 0.50

Compressor

Model KNB073FRVMC KNB073FQDHC

R.L.A A 6.2 6.6

L.R.A A 7.7 8.2

Refrigeration oil

ﬂ oz. (L) (Model)

9.1 (0.27) (FV50S) 10.8 (0.32) (NEO22)

Refrigerant control Linear expansion valve

Sound level

1

Cooling dB(A) 46

Heating

dB(A) 50

Airﬂ ow

High - Med. - Low

Cooling CFM 1,063

Heating

CFM 1,282 - 1,105 1,240 - 1,105

Fan speed

High - Med. - Low

Cooling rpm 740

Heating rpm 890 - 770 860 - 770

Defrost method Reverse cycle

Dimensions

W in. 31-1/2

D in. 11-1/4

H in. 21-5/8

Weight Ib. 73

External ﬁ nish Munsell 3Y 7.8/1.1

Refrigerant piping Not supplied

Refrigerant pipe size

(Min. wall thickness)

Liquid in. 1/4 (0.0315)

Gas in. 3/8 (0.0315)

Connection method

Indoor Flared

Outdoor Flared

Between the indoor &

outdoor units

Height difference ft. 40

Piping length ft. 65

Refrigerant charge (R410A)

1 lb. 12 oz.

NOTE: Test conditions are based on AHRI 210/240.

1: Rating conditions (Cooling) — Indoor: 80˚FDB, 67˚FWB, Outdoor: 95˚FDB, (75˚FWB)

(Heating) — Indoor: 70˚FDB, 60˚FWB, Outdoor: 47˚FDB, 43˚FWB

2: (Heating) — Indoor: 70˚FDB, 60˚FWB, Outdoor: 17˚FDB, 15˚FWB

3: Test condition (Refer to page 9.)

4: Test condition (Refer to page 9.)

OBH747D

6

Outdoor unit model

MUZ-HM12NA

-

U1

MUZ-HM12NA2

-

U1

MUZ-HM12NA

-

U8

MUZ-HM12NA2

-

U8

Capacity

Rated (Minimum~Maximum)

Cooling 1

Btu/h 12,000 ( 3,800 ~ 12,200 )

Heating 47 1

Btu/h 12,200 ( 4,500 ~ 14,500 ) 12,200 ( 5,500 ~ 14,500 )

Capacity

Rated (Maximum)

Heating 17 2

Btu/h 7,600 (9,000)

Power consumption

Rated (Minimum~Maximum)

Cooling 1

W 1,210 (240 - 1,300) 1,210 (205 - 1,300)

Heating 47 1

W 990 (240 - 1,220) 990 (340 - 1,660)

Power consumption

Rated (Maximum)

Heating 17 2

W 800 (990)

EER

1

[SEER]

3

Cooling 9.9 [ 18.0 ]

HSPF IV

4

Heating 10.0 [NA] / 8.5 [NA2]

COP Heating

1

3.61

Power factor

Cooling (208/230) % 95/95 94/94

Heating (208/230) % 93/93 95/96

Power supply V , phase , Hz 208/230 , 1 , 60

Max. fuse size (time delay) A 15

Min. circuit ampacity A 9 12

Fan motor F.L.A A 0.50

Compressor

Model

KNB073FRVMC KNB092FQAHC

R.L.A A 6.2 6.6

L.R.A A 7.7 8.2

Refrigeration oil

ﬂ oz. (L) (Model)

9.1 (0.27) (FV50S) 10.8 (0.32) (NEO22)

Refrigerant control Linear expansion valve

Sound level

1

Cooling dB(A) 49

Heating

dB(A) 51

Airﬂ ow

High - Med. - Low

Cooling CFM 1,063 1,102 - 639

Heating

CFM 1,282 - 1,105 1,186 - 1,116 - 1,045

Fan speed

High - Med. - Low

Cooling rpm 740 810 - 490

Heating rpm 890 - 770 870 - 820 - 770

Defrost method Reverse cycle

Dimensions

W in. 31-1/2

D in. 11-1/4

H in. 21-5/8

Weight Ib. 73

External ﬁ nish Munsell 3Y 7.8/1.1

Refrigerant piping Not supplied

Refrigerant pipe size

(Min. wall thickness)

Liquid in. 1/4 (0.0315)

Gas in. 3/8 (0.0315)

Connection method

Indoor Flared

Outdoor Flared

Between the indoor &

outdoor units

Height difference ft. 40

Piping length ft. 65

Refrigerant charge (R410A)

1 lb. 12 oz. 2 lb. 9 oz.

NOTE: Test conditions are based on AHRI 210/240.

1: Rating conditions (Cooling) — Indoor: 80˚FDB, 67˚FWB, Outdoor: 95˚FDB, (75˚FWB)

(Heating) — Indoor: 70˚FDB, 60˚FWB, Outdoor: 47˚FDB, 43˚FWB

2: (Heating) — Indoor: 70˚FDB, 60˚FWB, Outdoor: 17˚FDB, 15˚FWB

3: Test condition (Refer to page 9.)

4: Test condition (Refer to page 9.)

OBH747D

7

Outdoor unit model

MUZ-HM15NA

MUZ-HM15NA2

MUZ-HM18NA

MUZ-HM18NA2

Capacity

Rated (Minimum~Maximum)

Cooling 1

Btu/h 14,000 (3,100 - 16,000) 17,200 (5,800 - 18,000)

Heating 47 1

Btu/h 18,000 (4,800 - 18,500) 18,000 (5,400 - 20,900)

Capacity

Rated (Maximum)

Heating 17 2

Btu/h 11,500 (14,000) 11,500 (15,000)

Power consumption

Rated (Minimum~Maximum)

Cooling 1

W 1,127 (187 - 1,957) 1,598 (308 - 2,028)

Heating 47 1

W 1,570 (190 - 1,980) 1,548 (288 - 2,208)

Power consumption

Rated (Maximum)

Heating 17 2

W 1,290 (1,820) 1,258 (1,908)

EER

1

[SEER]

3

Cooling 12.0 [18.0] 10.5 [18.0]

HSPF IV

4

Heating 10.0 [NA] / 8.5 [NA2] 10.0 [NA] / 8.5 [NA2]

COP Heating

1

3.30 3.32

Power factor

Cooling (208/230) % 98/98 98/98

Heating (208/230) % 98/98 97/97

Power supply V , phase , Hz 208/230, 1 , 60 208/230, 1 , 60

Max. fuse size (time delay) A 15 15

Min. circuit ampacity A 10 10

Fan motor F.L.A A 0.50 0.50

Compressor

Model SNB130FQBMT SNB130FQBMT

R.L.A A 7.4 7.4

L.R.A A 9.3 9.3

Refrigeration oil

ﬂ oz. (L) (Model)

11.8 (0.35) (FV50S) 11.8 (0.35) (FV50S)

Refrigerant control Linear expansion valve

Sound level

1

Cooling dB(A) 49 49

Heating

dB(A) 51 51

Airﬂ ow

High - Med. - Low

Cooling CFM 1,102 - 639 1,102 - 639

Heating

CFM 1,186 - 1,045 - 1,045 1,186 - 1,045 - 1,045

Fan speed

High - Med. - Low

Cooling rpm 810 - 490 810 - 490

Heating rpm 870 - 770 - 770 870 - 770 - 770

Defrost method Reverse cycle

Dimensions

W in. 31-1/2 31-1/2

D in. 11-1/4 11-1/4

H in. 21-5/8 21-5/8

Weight Ib. 81 81

External ﬁ nish Munsell 3Y 7.8/1.1

Refrigerant piping Not supplied

Refrigerant pipe size

(Min. wall thickness)

Liquid in. 1/4 (0.0315) 1/4 (0.0315)

Gas in. 1/2 (0.0315) 1/2 (0.0315)

Connection method

Indoor Flared Flared

Outdoor Flared Flared

Between the indoor &

outdoor units

Height difference ft. 40 40

Piping length ft. 65 65

Refrigerant charge (R410A) 2 lb. 9 oz. 2 lb. 10 oz.

NOTE: Test conditions are based on AHRI 210/240.

1: Rating conditions (Cooling) — Indoor: 80˚FDB, 67˚FWB, Outdoor: 95˚FDB, (75˚FWB)

(Heating) — Indoor: 70˚FDB, 60˚FWB, Outdoor: 47˚FDB, 43˚FWB

2: (Heating) — Indoor: 70˚FDB, 60˚FWB, Outdoor: 17˚FDB, 15˚FWB

3: Test condition (Refer to page 9.)

4: Test condition (Refer to page 9.)

OBH747D

8

Outdoor unit model

MUZ-HM24NA

MUZ-HM24NA2

Capacity

Rated (Minimum~Maximum)

Cooling 1 Btu/h 22,500 (5,800 ~ 22,500)

Heating 47

1 Btu/h 26,000 (5,400 ~ 26,000)

Capacity

Rated (Maximum)

Heating 17 2 Btu/h 18,500 (18,500)

Power consumption

Rated (Minimum~Maximum)

Cooling 1 W 2,575 (275 ~ 2,575)

Heating 47

1 W 2,445 (265 ~ 2,445)

Power consumption

Rated (Maximum)

Heating 17 2 W 2,245 (2,245)

EER

1 [SEER] 3 Cooling 8.6 [18.0]

HSPF IV

4 Heating 9.5 [NA] / 8.5 [NA2]

COP Heating

1 3.05

Power factor

Cooling (208/230) % 99/99

Heating (208/230) % 99/99

Power supply V , phase , Hz 208/230, 1 , 60

Max. fuse size (time delay) A 15

Min. circuit ampacity A 14

Fan motor F.L.A 0.93

Compressor

Model SNB130FQBMT

R.L.A 10

L.R.A 12.5

Refrigeration oil

ﬂ oz. (L) (Model)

11.8 (0.35) (FV50S)

Refrigerant control Linear expansion valve

Sound level

1

Cooling dB(A) 54

Heating dB(A) 55

Airﬂ ow

High - Med. - Low

COOL CFM 1,742 - 922

HEAT CFM 1,691 - 1,691 - 1,372

Fan speed

High - Med. - Low

Cooling rpm 840 - 450

Heating rpm 810 - 810 - 650

Defrost method Reverse cycle

Dimensions

W in. 33-1/16

D in. 13

H in. 34-5/8

Weight Ib. 121

External ﬁ nish Munsell 3Y 7.8/1.1

Refrigerant piping Not supplied

Refrigerant pipe size

(Min. wall thickness)

Liquid in. 3/8 (0.0315)

Gas in. 5/8 (0.0315)

Connection method

Indoor Flared

Outdoor Flared

Between the indoor &

outdoor units

Height difference ft. 50

Piping length ft. 100

Refrigerant charge (R410A) 3 lb. 9 oz.

NOTE: Test conditions are based on AHRI 210/240.

1: Rating conditions (Cooling) — Indoor: 80˚FDB, 67˚FWB, Outdoor: 95˚FDB, (75˚FWB)

(Heating) — Indoor: 70˚FDB, 60˚FWB, Outdoor: 47˚FDB, 43˚FWB

2: (Heating) — Indoor: 70˚FDB, 60˚FWB, Outdoor: 17˚FDB, 15˚FWB

OBH747D

9

Test condition

ARI

Mode Test

Indoor air condition (°F) Outdoor air condition (°F)

Dry bulb Wet bulb Dry bulb Wet bulb

SEER

(Cooling)

"A-2" Cooling Steady State

at rated compressor Speed

80 67 95 (75)

"B-2" Cooling Steady State

at rated compressor Speed

80 67 82 (65)

"B-1" Cooling Steady State

at minimum compressor Speed

80 67 82 (65)

"F-1" Cooling Steady State

at minimum compressor Speed

80 67 67 (53.5)

"E-V" Cooling Steady State

at Intermediate compressor Speed

5

80 67 87 (69)

HSPF

(Heating)

"H1-2" Heating Steady State

at rated compressor Speed

70 60 47 43

"H3-2" Heating

at rated compressor Speed

70 60 17 15

"H0-1" Heating Steady State

at minimum compressor Speed

70 60 62 56.5

"H1-1" Heating Steady State

at minimum compressor Speed

70 60 47 43

"H2-V" Heating

at Intermediate compressor Speed

5

70 60 35 33

5

: At Intermediate compressor Speed

= ("Rated compressor speed" - "minimum compressor speed") / 3 + "minimum compressor speed".

3, 4

(2) OPERATION

Mode Condition

Intake air temperature (°F)

Indoor Outdoor

DB WB DB WB

Cooling

Standard temperature 80 67 95 —

Maximum temperature 90 73 115 —

Minimum temperature 67 57 14 —

Maximum humidity 78 % —

Heating

Standard temperature 70 60 47 43

Maximum temperature 80 67 75 65

Minimum temperature 70 60 -4 (NA), 5(NA2) -5 (NA), 4 (NA2)

OPERATING RANGE

(1) POWER SUPPLY

Rated voltage Guaranteed voltage (V)

Outdoor unit

208/230 V

1 phase

60 Hz

Min. 187

208 230 Max. 253

OBH747D

10

OUTLINES AND DIMENSIONS

4

Unit: inch

MUZ-HM09NA MUZ-HM09NA2 MUZ-HM12NA MUZ-HM12NA2

4 in. (100 mm)

or more

14 in. (350 mm)

or more

8 in. (200 mm)

or more *2

4 in. (100 mm)

or more

Liquid refrigerant pipe joint

Refrigerant pipe (flared)

Ø 1/4

Gas refrigerant pipe joint

Refrigerant pipe (flared)

Ø 3/8 (HM09/12)

Ø 1/2 (HM15/18)

REQUIRED SPACE

clear *1

*1

4 in. (100 mm) or more when

front and sides of the unit are clear

*2

When any 2 sides of left, right

and rear of the unit are clear

holes

MUZ-HM15NA MUZ-HM15NA2 MUZ-HM18NA MUZ-HM18NA2

OBH747D

11

MUZ-HM24NA MUZ-HM24NA2

Unit: inch

16-7/16

1-9/16

1-5/8

Drain hole

6-7/8

19-11/16

13

2

Air in

Air out

2-holes 13/32 13/16

14-3/16

33-1/16

4-5/16

3-3/16

34-5/8

17-25/32

Service panel

3-29/32

6-1/2

7-11/16

35

44

Liquid refrigerant pipe joint

Refrigerant pipe (flared)

Ø 3/8

Gas refrigerant pipe joint

Refrigerant pipe (flared)

Ø 5/8

*1 20 in. (500 mm) or more when front

and sides of the unit are clear

14 in. (350 mm)

or more

4 in. (100 mm)

or more

REQUIRED SPACE

Clear *1

4 in. (100 mm)

or more

20 in. (500 mm)

or more *2

*2 When any 2 sides of left, right

and rear of the unit are clear

OBH747D

12

5

WIRING DIAGRAM

MUZ-HM09NA

-

U8

MUZ-HM09NA2

-

U8

MUZ-HM12NA

-

U8

MUZ-HM12NA2

-

U8

MUZ-HM09NA

-

U1

MUZ-HM09NA2

-

U1

MUZ-HM12NA

-

U1

MUZ-HM12NA2

-

U1

OBH747D

13

MUZ-HM15NA

-

U1

MUZ-HM15NA2

-

U1

MUZ-HM18NA

-

U1

MUZ-HM18NA2

-

U1

OBH747D

14

MUZ-HM24NA

-

U1

MUZ-HM24NA2

-

U1

OBH747D

15

6

REFRIGERANT SYSTEM DIAGRAM

MUZ-HM09NA

-

U8

MUZ-HM09NA2

-

U8

Outdoor

heat

exchanger

Flared connection

Defrost

thermistor

RT61

Discharge

temperature

thermistor

RT62

Flared connection

Stop valve

(with strainer)

Stop valve

(with service port)

Refrigerant flow in cooling

Compressor

4-way valve

Refrigerant flow in heating

Refrigerant pipe ø3/8 (ø9.52)

(with heat insulator)

Refrigerant pipe ø1/4 (ø6.35)

(with heat insulator)

R.V. coil

heating ON

cooling OFF

Strainer

#100

LEV

Ambient

temperature

thermistor

RT65

Muffler

Capillary tube

O.D. 0.118 × I.D. 0.079

× 9-7/16

(ø3.0 × ø2.0

×

240)

Outdoor heat

exchanger

temperature

thermistor

RT68

Service port

Muffler

Unit: Inch (mm)

Flared connection

Discharge

temperature

thermistor

RT62

Flared connection

Stop valve

(with strainer)

Stop valve

(with service port)

Refrigerant flow in cooling

Compressor

4-way valve

Refrigerant flow in heating

Refrigerant pipe ø3/8 (ø9.52)

(with heat insulator)

Refrigerant pipe ø1/4 (ø6.35)

(with heat insulator)

R.V. coil

heating ON

cooling OFF

Strainer

#100

LEV

Muffler

Capillary tube

O.D. 0.118 × I.D. 0.055

× 10-1/4

(ø3.0 × ø1.4

×

260)

Muffler

Service port

Outdoor

heat

exchanger

Defrost

thermistor

RT61

Ambient

temperature

thermistor

RT65

Outdoor heat

exchanger

temperature

thermistor

RT68

MUZ-HM09NA

-

U1

MUZ-HM09NA2

-

U1

MUZ-HM12NA

-

U1

MUZ-HM12NA2

-

U1

OBH747D

16

Outdoor

heat

exchanger

Flared connection

Defrost

thermistor

RT61

Discharge

temperature

thermistor

RT62

Flared connection

Stop valve

(with strainer)

Refrigerant flow in cooling

Compressor

4-way valve

Refrigerant flow in heating

Refrigerant pipe ø1/4 (ø6.35)

(with heat insulator)

R.V. coil

heating ON

cooling OFF

Strainer

#100

LEV

Ambient

temperature

thermistor

RT65

Muffler

Capillary tube

O.D. 0.157 ×

I.D. 0.094 × 9-7/16

(

ø4.0 × ø2.4 × 240

)

Outdoor heat

exchanger

temperature

thermistor

RT68

Capillary tube

O.D. 0.118 ×

I.D. 0.079 × 8-9/32

(ø3.0 × ø2.0 × 210)

Service

port

Service

port

Refrigerant pipe ø1/2 (ø12.7)

(with heat insulator)

Stop valve

(with service port)

Muffler

MUZ-HM15NA MUZ-HM15NA2 MUZ-HM18NA MUZ-HM18NA2

MUZ-HM12NA

-

U8

MUZ-HM12NA2

-

U8

Outdoor

heat

exchanger

Flared connection

Defrost

thermistor

RT61

Discharge

temperature

thermistor

RT62

Flared connection

Stop valve

(with strainer)

Stop valve

(with service port)

Refrigerant flow in cooling

Compressor

4-way valve

Refrigerant flow in heating

Refrigerant pipe ø3/8 (ø9.52)

(with heat insulator)

Refrigerant pipe ø1/4 (ø6.35)

(with heat insulator)

R.V. coil

heating ON

cooling OFF

Strainer

#100

Capillary tube

O.D. 0.118 × I.D. 0.071

× 23-5/8

(ø

3.0

× ø

1.8

×

600

)

(×2)

LEV

Ambient

temperature

thermistor

RT65

Muffler

Capillary tube

O.D. 0.118 × I.D. 0.079

× 9-7/16

(ø3.0 × ø2.0

×

240)

Outdoor heat

exchanger

temperature

thermistor

RT68

Muffler

Service port

Unit: Inch (mm)

OBH747D

17

Unit: Inch (mm)

MUZ-HM24NA MUZ-HM24NA2

Outdoor

heat

exchanger

Flared connection

Defrost

thermistor

RT61

Discharge

temperature

thermistor

RT62

Flared connection

Stop valve

Capillary tube

O.D. 0.157×

I.D. 0.094×

3-15/16

(ø

4.0

×

ø

2.4

×

100)

Capillary tube

O.D. 0.157×

I.D. 0.094×7-7/8

(ø

4.0

×

ø

2.4

×

200)

Refrigerant flow in cooling

Compressor

4-way

valve

Refrigerant flow in heating

Refrigerant pipe

ø5/8

(

ø

15.88)

(with heat insulator)

Refrigerant pipe

ø3/8

(

ø

9.52)

(with heat insulator)

LEV

R.V. coil

heating ON

cooling OFF

Muffler

with #100 mesh strainer

Strainer

#100

Outdoor heat

exchanger

temperature

thermistor

RT68

Strainer

#100

Muffler

Capillary tube

O.D. 0.118×

I.D. 0.079× 7-7/8

(ø3.0×ø2.0×200(×4))

Stop valve

(with service port)

Service

port

Service port

OBH747D

18

Max. Length

A

Max. Height

difference

B

Indoor

unit

Outdoor unit

MAX. REFRIGERANT PIPING LENGTH and MAX. HEIGHT DIFFERENCE

Model

Refrigerant piping: ft. Piping size O.D: in.

Max. Length

A

Max. Height difference

B

Gas Liquid

MUZ-HM09NA

MUZ-HM09NA2

MUZ-HM12NA

MUZ-HM12NA2

65 40

3/8

1/4

MUZ-HM15NA

MUZ-HM15NA2

MUZ-HM18NA

MUZ-HM18NA2

1/2

MUZ-HM24NA

MUZ-HM24NA2

100 50 5/8 3/8

ADDITIONAL REFRIGERANT CHARGE (R410A: oz.)

NOTE: Refrigerant piping exceeding 25 ft. requires additional refrigerant charge according to the calculation.

Model

Outdoor unit

precharged

Refrigerant piping length (one way): ft.

25 30 40 50 60 65

MUZ-HM09NA

MUZ-HM09NA2

MUZ-HM12NA

-

U1

MUZ-HM12NA2

-

U1

1 lb. 12 oz.

0 1.08 3.24 5.40 7.56 8.64

MUZ-HM12NA

-

U8

MUZ-HM12NA2

-

U8

MUZ-HM15NA

MUZ-HM15NA2

2 lb. 9 oz.

MUZ-HM18NA

MUZ-HM18NA2

2 lb. 10 oz.

Calculation: X oz. = 1.08/5 oz./ft. × (Refrigerant piping length (ft.) - 25)

Model

Outdoor unit

precharged

Refrigerant piping length (one way): ft.

25 30 40 50 60 70 80 90 100

MUZ-HM24NA

MUZ-HM24NA2

3 lb. 9 oz. 0 1.08 3.24 5.40 7.56 9.72 11.88 14.04 16.20

Calculation: X oz. = 1.08/5 oz./ft. × (Refrigerant piping length (ft.) - 25)

OBH747D

19

DATA7

7-1. PERFORMANCE DATA

1) COOLING CAPACITY

Model

Indoor air Outdoor intake air DB temperature (˚F)

IWB (˚F)

75 85 95 105 115

TC SHC TPC TC SHC TPC TC SHC TPC TC SHC TPC TC SHC TPC

MUZ-HM09NA

MUZ-HM09NA2

71 11.0 7.6 0.67 10.3 7.1 0.73 9.7 6.6 0.79 9.0 6.2 0.83 8.3 5.7 0.86

67 10.4 8.6 0.63 9.7 8.0 0.69 9.0 7.4 0.75 8.4 6.9 0.80 7.7 6.3 0.83

63 9.8 9.4 0.60 9.1 8.7 0.66 8.5 8.1 0.72 7.7 7.3 0.77 7.0 6.7 0.80

MUZ-HM12NA

MUZ-HM12NA2

71 14.7 9.4 1.08 13.7 8.7 1.18 12.9 8.2 1.27 12.0 7.6 1.34 11.0 7.0 1.39

67 13.9 10.7 1.02 13.0 10.0 1.12 12.0 9.2 1.21 11.2 8.6 1.28 10.3 7.9 1.34

63 13.1 11.8 0.97 12.1 10.9 1.07 11.3 10.2 1.16 10.3 9.3 1.23 9.4 8.5 1.28

MUZ-HM15NA

MUZ-HM15NA2

71 17.2 11.1 1.04 16.0 10.4 1.14 15.1 9.7 1.23 14.0 9.1 1.29 12.9 8.3 1.35

67 16.2 12.7 0.98 15.1 11.8 1.08 14.0 10.9 1.17 13.0 10.2 1.24 12.0 9.3 1.30

63 15.3 13.9 0.94 14.1 12.9 1.04 13.2 12.0 1.12 12.0 10.9 1.19 10.9 10.0 1.24

MUZ-HM18NA

MUZ-HM18NA2

71 21.1 15.3 1.46 19.7 14.3 1.60 18.5 13.4 1.72 17.2 12.5 1.81 15.8 11.5 1.89

67 20.0 17.2 1.38 18.6 16.0 1.52 17.2 14.8 1.64 16.0 13.8 1.74 14.7 12.6 1.82

63 18.7 18.6 1.31 17.4 17.3 1.45 16.2 16.1 1.57 14.7 14.6 1.67 13.4 13.3 1.74

MUZ-HM24NA

MUZ-HM24NA2

71 27.6 20.9 2.34 25.8 19.5 2.56 24.2 18.3 2.76 22.5 17.0 2.91 20.7 15.7 3.02

67 26.1 23.2 2.21 24.3 21.6 2.43 22.5 20.0 2.63 20.9 18.6 2.79 19.2 17.1 2.92

63 24.5 25.1 2.10 22.7 23.3 2.33 21.2 21.6 2.51 19.2 19.7 2.68 17.6 18.0 2.79

NOTE: 1. IWB : Intake air wet-bulb temperature TC : Total Capacity (x10

3

Btu/h)

SHC : Sensible Heat Capacity (x10

3

Btu/h) TPC : Total Power Consumption (kW)

2. SHC is based on 80˚F of indoor Intake air DB temperature.

MUZ-HM09NA MUZ-HM09NA2 MUZ-HM12NA MUZ-HM12NA2

MUZ-HM15NA MUZ-HM15NA2 MUZ-HM18NA MUZ-HM18NA2

MUZ-HM24NA MUZ-HM24NA2

2) COOLING CAPACITY CORRECTIONS

Refrigerant piping length (one way: ft.)

Model 25 (std.) 40 65 100

MUZ-HM09NA

MUZ-HM09NA2

MUZ-HM12NA

MUZ-HM12NA2

MUZ-HM15NA

MUZ-HM15NA2

1.0 0.988 0.967 —

MUZ-HM18NA

MUZ-HM18NA2

1.0 0.985 0.963 0.933

MUZ-HM24NA

MUZ-HM24NA2

1.0 0.983 0.956 0.921

OBH747D

20

4) HEATING CAPACITY

Model

Indoor air Outdoor intake air WB temperature (˚F)

IDB (˚F)

5 152535434555

TC TPC TC TPC TC TPC TC TPC TC TPC TC TPC TC TPC

MUZ-HM09NA

MUZ-HM09NA2

75 4.8 0.53 6.3 0.67 7.9 0.79 9.4 0.88 10.6 0.92 11.0 0.94 12.4 0.97

70 5.2 0.51 6.7 0.65 8.2 0.77 9.6 0.86 10.9 0.90 11.2 0.92 12.7 0.95

65 5.5 0.49 6.9 0.62 8.6 0.74 10.0 0.83 11.2 0.88 11.6 0.89 13.0 0.94

MUZ-HM12NA

MUZ-HM12NA2

75 5.4 0.58 7.1 0.74 8.8 0.87 10.6 0.97 11.9 1.01 12.3 1.03 13.9 1.07

70 5.8 0.56 7.5 0.71 9.2 0.85 10.8 0.94 12.2 0.99 12.6 1.01 14.2 1.05

65 6.1 0.53 7.7 0.68 9.6 0.82 11.2 0.92 12.6 0.97 12.9 0.98 14.5 1.03

MUZ-HM15NA

MUZ-HM15NA2

75 7.9 0.94 10.4 1.19 13.1 1.40 15.6 1.56 17.6 1.64 18.1 1.66 20.5 1.73

70 8.6 0.90 11.1 1.15 13.5 1.37 15.9 1.52 18.0 1.60 18.5 1.63 21.0 1.70

65 9.0 0.86 11.3 1.10 14.1 1.32 16.5 1.48 18.5 1.56 19.1 1.58 21.4 1.66

MUZ-HM18NA

MUZ-HM18NA2

75 7.9 0.94 10.4 1.18 13.1 1.39 15.6 1.55 17.6 1.63 18.1 1.65 20.5 1.72

70 8.6 0.90 11.1 1.14 13.5 1.36 15.9 1.51 18.0 1.59 18.5 1.62 21.0 1.69

65 9.0 0.86 11.3 1.10 14.1 1.31 16.5 1.47 18.5 1.55 19.1 1.57 21.4 1.65

MUZ-HM24NA

MUZ-HM24NA2

75 11.4 1.48 15.1 1.86 18.9 2.19 22.5 2.44 25.4 2.56 26.1 2.60 29.6 2.70

70 12.4 1.41 16.0 1.80 19.5 2.14 23.0 2.38 26.0 2.50 26.8 2.55 30.3 2.65

65 13.0 1.35 16.4 1.73 20.4 2.06 23.8 2.31 26.8 2.44 27.6 2.48 30.9 2.60

NOTE: 1. IDB : Intake air dry-bulb temperature

TC : Total Capacity (x10

3

Btu/h) TPC : Total Power Consumption (kW)

2. Above data is for heating operation without any frost.

How to operate with fixed operational frequency of the compressor.

1. Press the EMERGENCY OPERATION switch on the front of the indoor unit, and select either EMERGENCY COOL

mode or EMERGENCY HEAT mode before starting to operate the air conditioner.

2. The compressor starts with operational frequency.

3. The fan speed of the indoor unit is High.

4. This operation continues for 30 minutes.

5. In order to release this operation, press the EMERGENCY OPERATION switch or press any button on the remote con-

troller.

3) HEATING CAPACITY CORRECTIONS

Refrigerant piping length (one way: ft.)

Model 25 (std.) 40 65 100

MUZ-HM09NA

MUZ-HM09NA2

MUZ-HM12NA

MUZ-HM12NA2

MUZ-HM15NA

MUZ-HM15NA2

1.0 0.997 0.993 —

MUZ-HM18NA

MUZ-HM18NA2

MUZ-HM24NA

MUZ-HM24NA2

1.0 0.997 0.993 0.987

OBH747D

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