Mitsubishi Electronics MUZ-FD12NA, MUZ-FD12NA- U1, MUZ-FD09NA- U1 User Manual

OUTDOOR UNIT
Revision A:
• 3. SPECIFICATION has been corrected. Please void OBH498.
SERVICE MANUAL
Wireless type Models
MUZ-FD09NA MUZ-FD09NA­MUZ-FD12NA
MUZ-FD12NA-
U1
U1
HFC
utilized
R410A
No. OBH498
REVISED EDITION-A
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
8. ACTUA TOR CONTROL ··································· 15
9. SERVICE FUNCTIONS ··································· 16
10. TROUBLESHOOTING ····································· 16
11. DISASSEMBLY INSTRUCTIONS ···················· 32
PARTS CATALOG (OBB498)
TM
Revision A:
• 3. SPECIFICATION has been corrected.
2
1
TECHNICAL CHANGES
MUZ-FD09NA MUZ-FD09NA ­MUZ-FD12NA MUZ-FD12NA -
1. New model
2
MUZ-FD09NA MUZ-FD12NA
PART NAMES AND FUNCTIONS
U1
U1
Air inlet
Piping
Drain hose
Air outlet
Drain outlet
33
3
SPECIFICATION
Outdoor unit model MUZ-FD09NA MUZ-FD12NA
Capacity
Rated (Minimum~Maximum)
Capacity Rated
Power consumption
Rated (Minimum~Maximum)
Power consumption Rated
1
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 4.26 4.07 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
1
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 External fi nish Munsell 3Y 7.8/1.1 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 difference 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
44
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)
5
: 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
5
5
= ("Cooling rated compressor speed" - "minimum compressor speed") / 3 + "minimum compressor speed".
OPERATING RANGE
(1) POWER SUPPLY
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 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
70 60 35 33
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)
Indoor Outdoor
55
4
OUTLINES AND DIMENSIONS
MUZ-FD09NA MUZ-FD12NA
21-5/8
1-3/4
Air in
handle
11-1/32
7/8
13/32
15-3/4
Air in
11-29/32
5-15/16
Drain hole 1-5/8
Air out
2- 3/8 13/16 Oval hole
19-11/16
31-1/2
1-9/16
12 ~ 12-3/4
11/16
2
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
66
5
MUZ-FD09NA MUZ-FD12NA
WIRING DIAGRAM
77
6
REFRIGERANT SYSTEM DIAGRAM
MUZ-FD09NA MUZ-FD12NA
Refrigerant pipe ø3/8 (with heat insulator)
Stop valve (with service port)
Flared connection
Flared connection
Stop valve (with strainer)
Refrigerant pipe 1/4 (with heat insulator)
4-way valve
Muffler
Discharge temperature thermistor RT62
Service port
Capillary tube
O.D. 0.118 ×I.D. 0.079
× 9-7/16
(ø3.0 × ø2.0 × 240)
Muffler
Service port
Compressor
Defrost thermistor RT61
Capillary tube
O.D. 0.118× I.D. 0.071
× 23-5/8
3.0
× ø
1.8×600
Expansion valve
)
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
A
Max. Height difference
B
Gas Liquid
65 40 3/8 1/4
Indoor unit
Max. Height
difference
B
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. × (Refrigerant piping length (ft.) - 25)
8
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
3
Btu/h)
3
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
3
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.
9
7-2. PERFORMANCE CURVE Cooling
MUZ-FD09NA
SHF at rating condition = 0.76
13
Indoor intake air WB te
12 11
Btu/h)
10
3
9 8
Total capacity
(10
7
0.7
Indoor intake air
(kW)
0.6
0.5
Total power consumption
65 75 85 95 105 115
Outdoor intake air DB temperature (°F)
Airflow
WB te
mperature (°F)
mpe
Heating
MUZ-FD09NA
= 381 CFM
Airflow
12
10
Btu/h)
8
3
Total capacity
(10
6
0.8
0.6
(kW)
0.4
Total power consumption
15 25 35 45 55
e air DB temperature
Indoor intak
Indoor intake air DB temperat
Outdoor intake air WB temperature (°F)
= 307 CFM
rature (°F)
)
(°F
ure (°F)
MUZ-FD12NA
SHF at rating condition = 0.73
15 14 13
Btu/h)
12
3
71 67 63
71 67 63
11
10
Total capacity
(10
1.2
1.1
1.0
(kW)
0.9
0.8
0.7
Total power consumption
Indoor
intak
9
oor intake air WB temperature (°F)
Ind
65 75 85 95 105 115
Outdoor intake air DB temperature (°F)
= 350 CFM
Airflow
e air WB temperat
ure
(°F)
71 67 63
71 67 63
MUZ-FD12NA
65
70
75
20 18 16
Btu/h)
14
3
12
Total capacity
(10
Indoor intake air DB temperature (°F)
10
8 6
75 70 65
1.1
1.0
(kW)
0.9
Indoor intake air
0.8
Total power consumption
0.7
0.6 15 25 35 45 55
Outdoor intake air WB temperature (°F)
Airflow
temperature (°F)
DB
= 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)
oor DB temperature (°F)
Ind
Outdoor ambient temperature
86 80 75 70
MUZ-FD12NA
(PSIG)
580 540 500
86
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
86
80
75 70
86
80
75 70
1111
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