Mitsubishi Electric MUZ-DM50VA-ER1 Manual de usuario

Models

MUZ-DM50VA -ER1

MUZ-DM60VA -ER1

MUZ-DM71VA -ER1

OUTDOOR UNIT

SERVICE MANUAL

CONTENTS

1. TECHNICAL CHANGES ······························2

2. PART NAMES AND FUNCTIONS··················3

3. SPECIFICATION ········································4

4. NOISE CRITERIA CURVES··························6

5. OUTLINES AND DIMENSIONS·····················8

6. WIRING DIAGRAM·····································9

7. REFRIGERANT SYSTEM DIAGRAM···········10

8. PERFORMANCE CURVES ························12

9. ACTUATOR CONTROL·····························24

10. SERVICE FUNCTIONS······························25

11. TROUBLESHOOTING·······························26

12. DISASSEMBLY INSTRUCTIONS·················44

HFC

utilized

R410A

Indoor unit service manual

MSZ-DM•VA Series (OBH780)

NOTE:

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

PARTS CATALOG (OBB781)

No. OBH781

REVISED EDITION-A

MUZ-DM50VA

Please void OBH781.

Revision A:

• "6. WIRING DIAGRAM" has been corrected.

Prepare the proper tools.

Prepare the proper protectors.

Provide adequate ventilation.

After stopping the operation of the air conditioner, turn off the power-supply breaker and remove the power plug.

Discharge the capacitor before the work involving the electric parts.

Do not perform the work involving the electric parts with wet hands.

Do not pour water into the electric parts.

Do not touch the refrigerant.

Do not touch the hot or cold areas in the refrigeration cycle.

When the repair or the inspection of the circuit needs to be done without turning off the power, exercise great caution not to

touch the live parts.

Use the speciﬁed 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.

TECHNICAL CHANGES

MUZ-DM50VA - ER1

MUZ-DM60VA - ER1

MUZ-DM71VA - ER1

1. New model

Revision A:

• "6. WIRING DIAGRAM" has been corrected.

OBH781A

2PART NAMES AND FUNCTIONS

ACCESSORIES

Drain socket 1

Air outlet

Drain outlet

Piping

Drain hose

Air inlet

(Back and side)

MUZ-DM50VA

MUZ-DM60VA MUZ-DM71VA

Piping

Air outlet

Drain outlet

Air inlet

(back and side)

Drain hose

OBH781A

3SPECIFICATION

Outdoor model MUZ-DM50VA MUZ-DM60VA MUZ-DM71VA

Power supply Single phase, 230 V, 50 Hz

Capacity

Rated frequency (Min.-Max.) Cooling kW 5.0 (1.3 - 5.0) 6.1 (1.7-7.1) 7.1 (1.8-7.1)

Heating 5.4 (1.4 - 6.5) 6.8 (1.5-8.4) 8.1 (1.5-8.5)

Breaker Capacity A 12 16

Electrical data

Power input 1 (Set) Cooling W2,050 1,900 2,330

Heating 1,480 1,970 2,440

Running current 1 (Set) Cooling A9.0 8.4 10.3

Heating 6.6 8.7 10.8

Power factor 1 (Set) Cooling %99 98

Heating 97 98

Starting current 1 (Set) A 9.0 8.7 10.8

Coefﬁcient of performance

(COP) 1 (Set) Cooling 2.44 3.21 3.05

Heating 3.65 3.45 3.32

Compressor

Model SNB130FGBHT SNB130FGBMT

Output W 900

Current 1Cooling A8.5 7.0 8.8

Heating 5.9 7.4 9.4

Refrigeration oil (Model) L 0.45 (NEO22) 0.35 (FV50S)

Fan motor Model RC0J50-FA RC0J77-AF

Current 1Cooling A0.27 0.94 0.97

Heating 0.34 0.94

Dimensions W × H × D mm 800 × 550 × 285 840 × 880 × 330

Weight kg 36 55

Special remarks

Dehumidiﬁcation Cooling L/h 2.2 1.6 2.4

Air ﬂow 1

Cooling High

m3/h

1,872 3,244

Med. 1,872 2,871 2,960

Low 1,086 1,566

Heating High 2,088 2,871

Med. 1,776 2,871

Low 1,386 2,331

Sound level 1Cooling dB(A) 50 55

Heating 51 55

Fan speed

Cooling High

rpm

810 950

Med. 810 840

Low 490 450

Heating High 900 810

Med. 770 810

Low 610 650

Fan speed regulator 3

Refrigerant ﬁlling capacity (R410A) kg 1.15 1.80

NOTE: Test conditions are based on ISO 5151.

Cooling: Indoor Dry-bulb temperature 27°C Wet-bulb temperature 19°C

Outdoor Dry-bulb temperature 35°C

Heating: Indoor Dry-bulb temperature 20°C

Outdoor Dry-bulb temperature 7°C Wet-bulb temperature 6°C

Refrigerant piping length (one way): 5 m

1 Measured under rated operating frequency.

OBH781A

Speciﬁcations and rated conditions of main electric parts

Model

Item MUZ-DM50VA MUZ-DM60VA MUZ-DM71VA

Smoothing capacitor (C61, C62, C63) 600 μF/ 620 μF 420 V

Diode module (DB61) 15 A 600 V 25 A 600 V

Fuse (F61) T20AL250V

(F701, F801, F901) T3.15AL250V

Power module (IC700) 20 A 600 V

(IC820) 20 A 600 V

(IC932) 8 A 600 V

Expansion valve coil (LEV) 12 V DC

Reactor (L61) 23 mH

Circuit protection (PTC64, PTC65) 33 Ω

Terminal block (TB) 5 P

Relay (X63) 3 A 250 V

(X64) 20 A 250 V

R.V. coil (21S4) 220 - 240 V AC

OBH781A

Test conditions

Cooling : Dry-bulb temperature 35°C

Heating : Dry-bulb temperature 7°C Wet-bulb temperature 6°C

OUTDOOR UNIT

MICROPHONE

4NOISE CRITERIA CURVES

10 63 125 250 500 1000 2000 4000 8000

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

COOLING

FUNCTION SPL(dB(A)) LINE

HEATING

NC-10

MUZ-DM50VA

OBH781A

10 63 125 250 500 1000 2000 4000 8000

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

COOLING

FUNCTION SPL(dB(A)) LINE

HEATING

NC-10

10 63 125 250 500 1000 2000 4000 8000

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

COOLING

FUNCTION SPL(dB(A)) LINE

HEATING

NC-10

MUZ-DM60VA MUZ-DM71VA

Test conditions

Cooling: Dry-bulb temperature 35°C

Heating: Dry-bulb temperature 7°C Wet-bulb temperature 6°C

OUTDOOR UNIT

MICROPHONE

1 m

OBH781A

5OUTLINES AND DIMENSIONS

MUZ-DM60VA MUZ-DM71VA

417.5

Drain hole

175 500

330

Air in

Air out 2-holes 10 21

360

840

109 81

880

452

Service panel

99.5

164.5

195

Liquid refrigerant pipe joint

Refrigerant pipe

(flared) Ø 6.35 (MUZ-DM60VA)

Ø 9.52 (MUZ-DM71VA)

Gas refrigerant pipe joint

Refrigerant pipe (flared) Ø 15.88

100 mm

or more

REQUIRED SPACE

100 mm or

350 mm or

Air in

*1 500 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

Clear *1

500 mm or

more *2

MUZ-DM50VA

800

302.5

500 Bolt pitch for installation

150

22.3

Handle

550

280

164.5

99.5

170.5

23 Service panel

Service port

285

344.5

400

Air in

Air out

Air in

17.5

Bolt pitch for

installation

304~325

Liquid refrigerant pipe joint

Refrigerant pipe (flared) ø6.35

Gas refrigerant pipe joint

Refrigerant pipe (flared) ø12.7

43°

35°

2 - 10 X 21 Oval hole

REQUIRED SPACE

350 mm or more

100 mm or more

Drain hole ø42

100 mm or more

*1 100 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

Clear *1

200 mm or

more *2

OBH781A

6WIRING DIAGRAM

MUZ-DM50VA MUZ-DM60VA MUZ-DM71VA

OBH781A

Unit : mm

7REFRIGERANT SYSTEM DIAGRAM

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

Muffler

4-way valve

Refrigerant flow in heating

Refrigerant pipe ø12.7

(with heat insulator)

Refrigerant pipe ø6.35

(with heat insulator)

R.V. coil

heating ON

cooling OFF

Strainer

#100

Capillary tube

4.0 ×

2.4 × 240

Capillary tube

3.0 ×

2.0 × 210

LEV

Outdoor heat

exchanger

temperature

thermistor

RT68

MUZ-DM50VA

Outdoor

heat

exchanger

Flared connection

Defrost

thermistor

RT61

Discharge

temperature

thermistor

RT62

Flared connection

Stop valve

Capillary tube

4.0

2.4

100 Capillary tube

4.0

2.4

200 Refrigerant flow in cooling

Compressor

4-way valve

Refrigerant flow in heating

Refrigerant pipe

15.88

(with heat insulator)

Refrigerant pipe

6.35(DM60)

Refrigerant pipe

9.52(DM71)

(with heat insulator)

LEV R.V. coil

heating ON

cooling OFF

Muffler

#100

Strainer

#100

Outdoor heat

exchanger

temperature

thermistor

RT68

Strainer

#100

Muffler

Capillary tube

ø3.0×ø2.0×200(×4)

MUZ-DM60VA MUZ-DM71VA

OBH781A

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