Mitsubishi Electronics MUZ-FD09NA User Manual 2

OUTDOOR UNIT

SERVICE MANUAL

Wireless type Models

MUZ-FD09NA MUZ-FD09NAMUZ-FD12NA

MUZ-FD12NA-

HFC

utilized

R410A

No. OBH498

Indoor unit service manual

MSZ-FD•NA Series (OBH497)

NOTE:

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

CONTENTS

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

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

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

4. OUTLINES AND DIMENSIONS ························ 6

5. WIRING DIAGRAM ············································ 7

6. REFRIGERANT SYSTEM DIAGRAM ··············· 8

7. DATA ·································································· 9

8. ACTUA TOR CONTROL ··································· 15

9. SERVICE FUNCTIONS ··································· 16

10. TROUBLESHOOTING ····································· 16

11. DISASSEMBLY INSTRUCTIONS ···················· 32

PARTS CATALOG (OBB498)

MUZ-FD09NA MUZ-FD12NA MUZ-FD09NA -

MUZ-FD12NA -

1. New model

TECHNICAL CHANGES

U1 U1

MUZ-FD09NA MUZ-FD12NA

PART NAMES AND FUNCTIONS

Air inlet

Piping

Drain hose

Air outlet

Drain outlet

SPECIFICATION

Outdoor unit model MUZ-FD09NA MUZ-FD12NA

Capacity

Rated (Minimum~Maximum)

Capacity Rated

Power consumption

Rated (Minimum~Maximum)

Power consumption Rated

EER

[SEER] 3 Cooling 13.8 [23.0] 12.5 [22.0]

Cooling 1

Heating 47 1

Heating 17 2

Cooling 1

Heating 47 1

Heating 17 2

Btu/h 9,000 (2,800~9,000) 12,000 (2,800~12,000) Btu/h 10,900 (3,000~18,000) 13,600 (3,000~21,000) Btu/h 12,500 13,600 W W

650 (160~650) 960 (160~960)

750 (150~2,400)

980

(150~2,400)

W 1,730 1,780

HSPF IV(V) 4 Heating 10.55 (7.4) 10.55 (7.4) COP Heating

1 4.30 4.10 External nish Munsell 3Y 7.8/1.1 Power supply V , phase , Hz 208/230 , 1 , 60 Max. fuse size (time delay) A 15 Min. circuit ampacity A 12 Fan motor F.L.A 0.56

Model SNB130FQAH

Compressor

R.L.A 8.6 L.R.A 10.8

Refrigerant control Liner expansion valve

Sound level

Cooling dB(A) 48 48 Heating dB(A) 49 49

Defrost method Reverse cycle

W in. 31-1/2

Dimensions

D in. 11-1/4

H in. 21-5/8 Weight Ib. 80 Remote controller Wireless type Control voltage

(by built-in transformer)

VDC 12 - 24

Refrigerant piping Not supplied

Refrigerant pipe size (Min. wall thickness)

Connection method

Between the indoor & outdoor units

Liquid in. 1/4 (0.0315)

Gas in. 3/8 (0.0315)

Indoor Flared

Outdoor Flared

Height differ-

ence

ft. 40

Piping length ft. 65 Refrigerant charge (R410A) 2 lb. 9 oz. Refrigeration oil (Model) NE022

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

1 : Rating conditions (Cooling) — Indoor : 80 FDB, 67 FWB, Outdoor : 95 FDB, (75 FWB) Rated frequency (Heating) — Indoor : 70 FDB, 60 FWB, Outdoor : 47 FDB, 43 FWB Rated frequency 2 : (Heating) — Indoor : 70 FDB, 60 FWB, Outdoor : 17 FDB, 15 FWB Maximum frequency

Test condition

3, 4

Mode Test

ARI

"A" Cooling Steady State at rated compressor Speed

"B-2" Cooling Steady State at rated compressor Speed

SEER

(Cooling)

HSPF

(Heating)

: At Intermediate compressor Speed

"B-1" Cooling Steady State at minimum compressor Speed

Low ambient Cooling Steady State at minimum compressor Speed

Intermediate Cooling Steady State at Intermediate compressor Speed

Standard Rating-Heating at rated compressor Speed

Low temperature Heating at rated compressor Speed

Max temperature Heating at minimum compressor Speed

High temperature Heating at minimum compressor Speed

Frost Accumulation at rated compressor Speed

Frost Accumulation at Intermediate compressor Speed

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

Indoor air condition Outdoor air condition

Dry bulb (°F) Wet bulb (°F) Dry bulb (°F) Wet bulb (°F)

80 67 95 (75)

80 67 82 (65)

80 67 67 (53.5)

80 67 87 (69)

70 60 47 43

70 60 17 15

70 60 62 56.5

70 60 47 43

70 60 35 33

OPERATING RANGE

(1) POWER SUPPLY

Outdoor unit

(2) OPERATION

Mode Condition

Standard temperature 80 67 95 —

Cooling

Heating

Maximum temperature 90 73 115 — Minimum temperature 67 57 14 — Maximum humidity 78 % — Standard temperature 70 60 47 43 Maximum temperature 80 67 75 65 Minimum temperature 70 60 14 13

Rated voltage Guaranteed Voltage

208/230 V

1 phase

60 Hz

Min.187 V

DB WB DB WB

208 V 230 V Max.253 V

Intake air temperature (°F)

lndoor Outdoor

OUTLINES AND DIMENSIONS

MUZ-FD09NA MUZ-FD12NA

1-3/4

Air in

7/8

handle

21-5/8

11- 1/3 2

5-15/16

13/32

15-3/4

11-29/32

Air in

19-11/16

Air out

31-1/2

Drain hole 1-5/8

1-9/16

2- 3/8 13/16 Oval hole

12 ~ 12-3/4

11/16

2-23/32

13-9/16

5-7/8

REQUIRED SPACE

4 in. or more

17/3229/32 11-1/4

Open two sides of left, right, or rear side.

Liquid pipe :1/4 (flared) Gas pipe :3/8 (flared)

6-23/32

Unit: inch

Basically open 4 inch or more without any obstruction in front and on both sides of the unit.

4 in. or more

14 in. or more

8 in. or more

MUZ-FD09NA MUZ-FD12NA

WIRING DIAGRAM

REFRIGERANT SYSTEM DIAGRAM

MUZ-FD09NA MUZ-FD12NA

Refrigerant pipe ø3/8 (with heat insulator)

Flared connection

Refrigerant pipe 1/4 (with heat insulator)

Muffler

Stop valve (with service port)

Stop valve (with strainer)

Capillary tube

O.D. 0.118 × I.D. 0.079

× 9-7/16

(ø3.0 × ø2.0 × 240)

4-way valve

Discharge temperature thermistor RT62

Service port

Muffler

Service port

Compressor

Defrost thermistor RT61

Capillary tube

O.D. 0.118 × I.D. 0.071

× 23-5/8

3.0

× ø

(ø

Expansion valve

1.8×600

)

Refrigerant flow in cooling Refrigerant flow in heating

Outdoor heat exchanger

Strainer #100

R.V. coil heating ON cooling OFF

Outdoor heat exchanger temperature thermistor RT68

Ambient temperature thermistor RT65

Unit:inch

MAX. REFRIGERANT PIPING LENGTH and MAX. HEIGHT DIFFERENCE

Refrigerant piping : ft Piping size O.D : in

Model

MUZ-FD09NA MUZ-FD12NA

Max. Length

Max. Height difference

Gas Liquid

65 40 3/8 1/4

Indoor unit

Max. Height

difference

Max. length A

Outdoor unit

ADDITIONAL REFRIGERANT CHARGE (R410A:oz.)

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

Model Outdoor unit precharged

MUZ-FD09NA MUZ-FD12NA

2 lb. 9 oz. 0 1.62 4.86 8.10 11.34 12.96

25 30 40 50 60 65

Refrigerant piping length (one way) : ft

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

Calculation : X oz. = 1.62/ 5 oz./ ft x (Refrigerant piping length (ft) - 25)

DATA7

MUZ-FD09NA MUZ-FD12NA

7-1. PERFORMANCE DATA

1) COOLING CAPACITY

Indoor air Outdoor intake air DB temperature (˚F)

Model

MUZ-FD09NA

MUZ-FD12NA

IWB 75 85 95 105 115

(˚F) TC SHC TPC TC SHC TPC TC SHC TPC TC SHC TPC TC SHC TPC

71 11.0 6.9 0.58 10.3 6.5 0.63 9.7 6.1 0.68 9.0 5.6 0.72 8.3 5.2 0.75 67 10.4 7.9 0.55 9.7 7.4 0.60 9.0 6.8 0.65 8.4 6.4 0.69 7.7 5.8 0.72 63 9.8 8.8 0.52 9.1 8.1 0.58 8.5 7.6 0.62 7.7 6.9 0.66 7.0 6.3 0.69 71 14.7 8.8 0.85 13.7 8.2 0.94 12.9 7.7 1.01 12.0 7.2 1.06 11.0 6.6 1.10 67 13.9 10.2 0.81 13.0 9.5 0.89 12.0 8.8 0.96 11.2 8.1 1.02 10.3 7.5 1.07

63 13.1 11.3 0.77 12.1 10.5 0.85 11.3 9.7 0.92 10.3 8.9 0.98 9.4 8.1 1.02

NOTE : 1. IWB : Intake air wet-bulb temperature

TC : Total Capacity (x10 SHC : Sensible Heat Capacity (x10

Btu/h)

TPC : Total Power Consumption (kW)

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

2) COOLING CAPACITY CORRECTIONS

Refrigerant piping length (one way : ft.)

25 (std.) 40 65

MUZ-FD09NA MUY-FD12NA

1.0 0.954 0.878

3) HEATING CAPACITY

Indoor air Outdoor intake air WB temperature (˚F)

Model

IDB 15 25 35 43 45 55 (˚F) TC TPC TC TPC TC TPC TC TPC TC TPC TC TPC

75 6.3 0.56 7.9 0.66 9.4 0.73 10.6 0.77 11.0 0.78 12.4 0.81

MUZ-FD09NA

70 6.7 0.54 8.2 0.64 9.6 0.71 10.9 0.75 11.2 0.77 12.7 0.80 65 6.9 0.52 8.6 0.62 10.0 0.69 11.2 0.73 11.6 0.74 13.0 0.78 75 7.9 0.73 9.9 0.86 11.8 0.96 13.3 1.00 13.7 1.02 15.5 1.06

MUZ-FD12NA

70 8.4 0.71 10.2 0.84 12.0 0.93 13.6 0.98 14.0 1.00 15.8 1.04 65 8.6 0.68 10.7 0.81 12.4 0.91 14.0 0.96 14.4 0.97 16.2 1.02

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

TC : Total Capacity (x10

Btu/h)

TPC : Total Power Consumption (kW)

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

Btu/h)

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 twice or once, or press any button on the remote controller.

7-2. PERFORMANCE CURVE Cooling

MUZ-FD09NA

SHF at rating condition = 0.76

Indoor intake air WB temperature (°F)

Btu/h)

Total capacity

(10

0.7

Indoor intake air WB temperature (°F)

(kW)

0.6

0.5

Total power consumption

65 75 85 95 105 115

Outdoor intake air DB temperature (°F)

Airflow

Heating

MUZ-FD09NA

= 381 CFM

Airflow

Btu/h)

Indoor intake air DB temperature (°F)

Total capacity

(10

0.8

Indoor intake air DB temperature (°F)

0.6

(kW)

0.4

Total power consumption

15 25 35 45 55

Outdoor intake air WB temperature (°F)

= 307 CFM

MUZ-FD12NA

SHF at rating condition = 0.73

Btu/h)

71 67 63

Total capacity

(10

1.2

1.1

1.0

(kW)

0.9

0.8

0.7

Total power consumption

Indoor intake air WB temperature (°F)

65 75 85 95 105 115

Outdoor intake air DB temperature (°F)

Airflow

= 350 CFM

71 67 63

MUZ-FD12NA

Btu/h)

Total capacity

(10

Indoor intake air DB temperature (°F)

75 70 65

1.1

1.0

(kW)

0.9

Indoor intake air DB temperature (°F)

0.8

Total power consumption

0.7

0.6 15 25 35 45 55

Outdoor intake air WB temperature (°F)

Airflow

= 420 CFM

65 70 75

75 70 65

This value of frequency is not the same as the actual frequency in operating. Refer to 7-5 and 7-6 for the relationships between frequency and capacity.

1010

7-3. CONDENSING PRESSURE Cooling

Data is based on the condition of indoor humidity 50 %. Air flow should be set to High speed.

MUZ-FD09NA

(PSIG)

580

540

500

460

420

380

Condensing pressure

340

300

260

68 70 75 80 85 90 95 100 105(°F)

Indoor DB temperature (°F)

Outdoor ambient temperature

86 80 75 70

MUZ-FD12NA

(PSIG)

580

540

500

460

420

380

Condensing pressure

340

300

260

68 70 75 80 85 90 95 100 105(°F)

Indoor DB temperature (°F)

Outdoor ambient temperature

80 75 70

(PSIG)

180 175 170 165 160 155 150 145 140

Suction pressure

135 130 125 120

68 70 75 80 85 90 95 100 105(°F)

(PSIG)

180 175 170 165 160 155 150 145 140

Suction pressure

135 130 125 120

68 70 75 80 85 90 95 100 105(°F)

Indoor DB temperature (°F)

Outdoor ambient temperature

Indoor DB temperature (°F)

Outdoor ambient temperature

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