Mitsubishi Electric MXZ-2C20NA2-U1 User manual

HFC
utilized
R410A
TM
PARTS CATALOG (OBB702)
INDOOR UNIT
SERVICE MANUAL
OUTDOOR UNIT
Models
MXZ-2C20NA2 -U1
MXZ-3C24NA MXZ-3C24NA2 -U1
MXZ-3C30NA MXZ-3C30NA2 -U1
MXZ-4C36NA MXZ-4C36NA2 -U1
MXZ-5C42NA MXZ-5C42NA2 -U1
MXZ-2C20NAHZ MXZ-2C20NAHZ2 -U1
MXZ-3C24NAHZ MXZ-3C24NAHZ2 -U1
MXZ-3C30NAHZ MXZ-3C30NAHZ2 -U1
No. OBH702
REVISED EDITION-G
OBH702 REVISED EDITION-F is void.
Revision G:
• 4. NOISE CRITERIA CURVES has been changed.
Indoor unit service manual
MSZ-FE·NA Series (OBH542)
MSZ-FH·NA Series (OBH683)
MSZ-GE·NA Series (OBH548)
MSZ-GL·NA Series (OBH732)
MSZ-EF·NA Series (OBH736)
MFZ-KA·NA Series (OBH568)
MFZ-KJ·NA Series (OBH752)
SLZ-KA·NA Series (OCH487)
SLZ-KF·NA.TH Series
(OCH669)
PLA-A·BA Series (OCH420)
PLA-A·EA Series (OCH640)
SEZ-KD·NA Series
PEAD-A·AA Series
PCA-A·KA Series (OCH455)
MVZ-A·AA Series
SVZ-KP·NA Series
MXZ-3C24NA MXZ-3C24NA2
MXZ-3C30NA MXZ-3C30NA2
MXZ-4C36NA MXZ-4C36NA2
CONTENTS
1. TECHNICAL CHANGES ··································· 5
2. PART NAMES AND FUNCTIONS····················· 6
3. SPECIFICATION················································ 7
4. NOISE CRITERIA CURVES···························· 15
5. OUTLINES AND DIMENSIONS ······················ 17
6. WIRING DIAGRAM·········································· 23
7. REFRIGERANT SYSTEM DIAGRAM············· 34
8. DATA································································ 47
9. ACTUATOR CONTROL··································· 76
10. SERVICE FUNCTIONS···································· 77
11. TROUBLESHOOTING····································· 79
12. DISASSEMBLY INSTRUCTIONS·················· 102

2
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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:
• MXZ-3C24NA, MXZ-3C30NA and MXZ-4C36NA have been added.
Revision B:
• MXZ-3C24/3C30/4C36/5C42NA2 and MXZ-2C20/3C24/3C30NAHZ2-U1 have been added.
Revision C:
• 3. SPECIFICATION has been changed.
• Some descriptions have been modified.
Revision D:
• Connectable indoor unit lineups have been modified.
• WIRING DIAGRAM (6.) and TEST POINT DIAGRAM AND VOLTAGE (11-7.) have been changed.
Revision E:
• Capacity and input curve have been corrected.
Revision F:
• MXZ-2C20NA2-U1 has been added.
Revision G:
• 4. NOISE CRITERIA CURVES has been changed.
OBH702G

3
<MXZ-5C42NA>
Connectable indoor unit lineups(Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA
MSZ-FH**NA
MSZ-FH**NA2
MSZ-GE**NA
MSZ-GL**NA-U1
MSZ-EF**NA-U1
Floor standing MFZ-KA**NA
MFZ-KJ**NA-U1
4-way cassette
SLZ-KA**NA.TH
SLZ-KF**NA.TH
PLA-A**BA6
PLA-A**EA7
Ceiling concealed SEZ-KD**NA4.TH
PEAD-A**AA5
Ceiling suspended PCA-A**KA6.TH
Multi-position MVZ-A**AA4
SVZ-KP**NA
<MXZ-4C36NA>
Connectable indoor unit lineups(Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA
MSZ-FH**NA
MSZ-FH**NA2
MSZ-GE**NA
MSZ-GL**NA-U1
MSZ-EF**NA-U1
Floor standing MFZ-KA**NA
MFZ-KJ**NA-U1
4-way cassette
SLZ-KA**NA.TH
SLZ-KF**NA.TH
PLA-A**BA6
PLA-A**EA7
Ceiling concealed SEZ-KD**NA4.TH
PEAD-A**AA5
Ceiling suspended PCA-A**KA6.TH
Multi-position MVZ-A**AA4
SVZ-KP**NA
<MXZ-3C30NA>
Connectable indoor unit lineups(Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA
MSZ-FH**NA
MSZ-FH**NA2
MSZ-GE**NA
MSZ-GL**NA-U1
MSZ-EF**NA-U1
Floor standing MFZ-KA**NA
MFZ-KJ**NA-U1
4-way cassette
SLZ-KA**NA.TH
SLZ-KF**NA.TH
PLA-A**BA6
PLA-A**EA7
Ceiling concealed SEZ-KD**NA4.TH
PEAD-A**AA5
Ceiling suspended PCA-A**KA6.TH
Multi-position MVZ-A**AA4
SVZ-KP**NA
<MXZ-3C30NAHZ>
Connectable indoor unit lineups(Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA
MSZ-FH**NA
MSZ-FH**NA2
MSZ-GE**NA
MSZ-GL**NA-U1
MSZ-EF**NA-U1
Floor standing MFZ-KA**NA
MFZ-KJ**NA-U1
4-way cassette
SLZ-KA**NA.TH
SLZ-KF**NA.TH
PLA-A**BA6
PLA-A**EA7
Ceiling concealed SEZ-KD**NA4.TH
PEAD-A**AA5
Ceiling suspended PCA-A**KA6.TH
Multi-position MVZ-A**AA4
SVZ-KP**NA
<MXZ-5C42NA2-U1>
Connectable indoor unit lineups(Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA
MSZ-FH**NA
MSZ-FH**NA2
MSZ-GE**NA
MSZ-GL**NA-U1
MSZ-EF**NA-U1
Floor standing MFZ-KA**NA
MFZ-KJ**NA-U1
4-way cassette
SLZ-KA**NA.TH
SLZ-KF**NA.TH
PLA-A**BA6
PLA-A**EA7
Ceiling concealed SEZ-KD**NA4.TH
PEAD-A**AA5
Ceiling suspended PCA-A**KA6.TH
Multi-position MVZ-A**AA4
SVZ-KP**NA
<MXZ-4C36NA2-U1>
Connectable indoor unit lineups(Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA
MSZ-FH**NA
MSZ-FH**NA2
MSZ-GE**NA
MSZ-GL**NA-U1
MSZ-EF**NA-U1
Floor standing MFZ-KA**NA
MFZ-KJ**NA-U1
4-way cassette
SLZ-KA**NA.TH
SLZ-KF**NA.TH
PLA-A**BA6
PLA-A**EA7
Ceiling concealed SEZ-KD**NA4.TH
PEAD-A**AA5
Ceiling suspended PCA-A**KA6.TH
Multi-position MVZ-A**AA4
SVZ-KP**NA
<MXZ-3C30NA2-U1>
Connectable indoor unit lineups(Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA
MSZ-FH**NA
MSZ-FH**NA2
MSZ-GE**NA
MSZ-GL**NA-U1
MSZ-EF**NA-U1
Floor standing MFZ-KA**NA
MFZ-KJ**NA-U1
4-way cassette
SLZ-KA**NA.TH
SLZ-KF**NA.TH
PLA-A**BA6
PLA-A**EA7
Ceiling concealed SEZ-KD**NA4.TH
PEAD-A**AA5
Ceiling suspended PCA-A**KA6.TH
Multi-position MVZ-A**AA4
SVZ-KP**NA
<MXZ-3C30NAHZ2-U1>
Connectable indoor unit lineups(Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA
MSZ-FH**NA
MSZ-FH**NA2
MSZ-GE**NA
MSZ-GL**NA-U1
MSZ-EF**NA-U1
Floor standing MFZ-KA**NA
MFZ-KJ**NA-U1
4-way cassette
SLZ-KA**NA.TH
SLZ-KF**NA.TH
PLA-A**BA6
PLA-A**EA7
Ceiling concealed SEZ-KD**NA4.TH
PEAD-A**AA5
Ceiling suspended PCA-A**KA6.TH
Multi-position MVZ-A**AA4
SVZ-KP**NA
OBH702G

4
<MXZ-3C24NA>
Connectable indoor unit lineups(Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA
MSZ-FH**NA
MSZ-FH**NA2
MSZ-GE**NA
MSZ-GL**NA-U1
MSZ-EF**NA-U1
Floor standing MFZ-KA**NA
MFZ-KJ**NA-U1
4-way cassette
SLZ-KA**NA.TH
SLZ-KF**NA.TH
PLA-A**BA6
PLA-A**EA7
Ceiling concealed SEZ-KD**NA4.TH
PEAD-A**AA5
Ceiling suspended PCA-A**KA6.TH
Multi-position MVZ-A**AA4
SVZ-KP**NA
<MXZ-3C24NAHZ>
Connectable indoor unit lineups(Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA
MSZ-FH**NA
MSZ-FH**NA2
MSZ-GE**NA
MSZ-GL**NA-U1
MSZ-EF**NA-U1
Floor standing MFZ-KA**NA
MFZ-KJ**NA-U1
4-way cassette
SLZ-KA**NA.TH
SLZ-KF**NA.TH
PLA-A**BA6
PLA-A**EA7
Ceiling concealed SEZ-KD**NA4.TH
PEAD-A**AA5
Ceiling suspended PCA-A**KA6.TH
Multi-position MVZ-A**AA4
SVZ-KP**NA
<MXZ-2C20NAHZ>
Connectable indoor unit lineups(Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA
MSZ-FH**NA
MSZ-FH**NA2
MSZ-GE**NA
MSZ-GL**NA-U1
MSZ-EF**NA-U1
Floor standing MFZ-KA**NA
MFZ-KJ**NA-U1
4-way cassette
SLZ-KA**NA.TH
SLZ-KF**NA.TH
PLA-A**BA6
PLA-A**EA7
Ceiling concealed SEZ-KD**NA4.TH
PEAD-A**AA5
Ceiling suspended PCA-A**KA6.TH
Multi-position MVZ-A**AA4
SVZ-KP**NA
<MXZ-3C24NA2-U1>
Connectable indoor unit lineups(Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA
MSZ-FH**NA
MSZ-FH**NA2
MSZ-GE**NA
MSZ-GL**NA-U1
MSZ-EF**NA-U1
Floor standing MFZ-KA**NA
MFZ-KJ**NA-U1
4-way cassette
SLZ-KA**NA.TH
SLZ-KF**NA.TH
PLA-A**BA6
PLA-A**EA7
Ceiling concealed SEZ-KD**NA4.TH
PEAD-A**AA5
Ceiling suspended PCA-A**KA6.TH
Multi-position MVZ-A**AA4
SVZ-KP**NA
<MXZ-3C24NAHZ2-U1>
Connectable indoor unit lineups(Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA
MSZ-FH**NA
MSZ-FH**NA2
MSZ-GE**NA
MSZ-GL**NA-U1
MSZ-EF**NA-U1
Floor standing MFZ-KA**NA
MFZ-KJ**NA-U1
4-way cassette
SLZ-KA**NA.TH
SLZ-KF**NA.TH
PLA-A**BA6
PLA-A**EA7
Ceiling concealed SEZ-KD**NA4.TH
PEAD-A**AA5
Ceiling suspended PCA-A**KA6.TH
Multi-position MVZ-A**AA4
SVZ-KP**NA
<MXZ-2C20NAHZ2-U1>
Connectable indoor unit lineups(Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA
MSZ-FH**NA
MSZ-FH**NA2
MSZ-GE**NA
MSZ-GL**NA-U1
MSZ-EF**NA-U1
Floor standing MFZ-KA**NA
MFZ-KJ**NA-U1
4-way cassette
SLZ-KA**NA.TH
SLZ-KF**NA.TH
PLA-A**BA6
PLA-A**EA7
Ceiling concealed SEZ-KD**NA4.TH
PEAD-A**AA5
Ceiling suspended PCA-A**KA6.TH
Multi-position MVZ-A**AA4
SVZ-KP**NA
<MXZ-2C20NA2-U1>
Connectable indoor unit lineups(Heat pump inverter type)
Model type Model name Capacity class [kBTU/h]
06 09 12 15 18 24 30 36
Wall mounted
MSZ-FE**NA
MSZ-FH**NA
MSZ-FH**NA2
MSZ-GE**NA
MSZ-GL**NA-U1
MSZ-EF**NA-U1
Floor standing MFZ-KA**NA
MFZ-KJ**NA-U1
4-way cassette
SLZ-KA**NA.TH
SLZ-KF**NA.TH
PLA-A**BA6
PLA-A**EA7
Ceiling concealed SEZ-KD**NA4.TH
PEAD-A**AA5
Ceiling suspended PCA-A**KA6.TH
Multi-position MVZ-A**AA4
SVZ-KP**NA
OBH702G

5
TECHNICAL CHANGES
1
MXZ-5C42NA
MXZ-2C20NAHZ
MXZ-3C24NAHZ
MXZ-3C30NAHZ
1. New model
MXZ-3C24NA
MXZ-3C30NA
MXZ-4C36NA
1. New model
MXZ-3C24NA MXZ-3C24NA2 - U1
MXZ-3C30NA MXZ-3C30NA2 - U1
MXZ-4C36NA MXZ-4C36NA2 - U1
MXZ-5C42NA MXZ-5C42NA2 - U1
MXZ-2C20NAHZ MXZ-2C20NAHZ2 - U1
MXZ-3C24NAHZ MXZ-3C24NAHZ2 - U1
MXZ-3C30NAHZ MXZ-3C30NAHZ2 - U1
1. Outdoor control P.C. board has been changed.
MXZ-2C20NA2 - U1
1. New model
OBH702G

6
PART NAMES AND FUNCTIONS
2
MXZ-5C42NA MXZ-5C42NA2
MXZ-2C20NAHZ MXZ-2C20NAHZ2
MXZ-3C24NAHZ MXZ-3C24NAHZ2
MXZ-3C30NAHZ MXZ-3C30NAHZ2
MXZ-3C24NA MXZ-3C24NA2
MXZ-3C30NA MXZ-3C30NA2
MXZ-4C36NA MXZ-4C36NA2
MXZ-2C20NA2
Air outlet
Drain outlet
Air inlet
(Back and side)
Air outlet
Drain outlet
Air inlet
(Back and side)
Air outlet
Drain outlet
Air inlet
(Back and side)
OBH702G

7
SPECIFICATION
3
NOTE: Test conditions are based on ARI 210/240.
Item Outdoor model MXZ-2C20NA2
Indoor type Non-Duct (09+09) Duct (09+12)
Capacity Cooling *1 Btu/h 18,000 20,000 Heating 47 *1 Btu/h 22,000 22,000
Heating 17 *2 Btu/h 1,2500 13,500
Power
consumption
Cooling *1 W 1,417 2,000
Heating 47 *1 W 1,641 1,771
Heating 17 *2 W 1,300 1,350
EER Cooling 12.7 10.0
SEER Cooling 20.0 16.0
HSPF IV(V) Heating 10.0 9.3
COP Heating 3.93 3.64
([WHUQDO¿QLVK Munsell 3.0Y 7.8/1.1
Power supply V, phase, Hz 208/230, 1, 60
Max. fuse size (time delay) A 20
Min. circuit ampacity A 17.2
Fan motor F.L.A 1.77
Compressor
Model SNB140FQUH2T
Winding resistance
(at 68 ºF) ȍU-V1.99 V-W 1.99 W-U 1.99
R.L.A 10.7
L.R.A 15.5
Refrigerant control LEV
Sound level dB(A) 50/54
Defrost method Reverse cycle
Dimensions W in. 33-1/16 D in. 13
H in. 27-15/16
Weight lb. 126
Remote controller Wireless type
Control voltage (by built-in transformer) 12 - 24 VDC
Refrigerant piping Not supplied (optional parts)
Valve size Liquid in. 1/4
Gas in. 3/8
Connection method
Indoor Flared
Outdoor Flared
Refrigerant charge (R410A) lb. 5 lb. 15 oz.
Refrigeration oil (Model) ÀR]/ 20.3 (0.6) (NEO22)
Unit: °F
Mode Test Indoor air condition Outdoor air condition
Dry bulb Wet bulb Dry bulb Wet bulb
Cooling *1: "A" 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)
Low ambient cooling steady state at minimum compressor speed 80 67 67 (53.5)
Intermediate cooling steady state at intermediate compressor speed 80 67 87 (69)
Heating *1: Standard rating-heating at rated compressor speed 70 60 47 43
*2: Low temperature heating at maximum compressor speed 70 60 17 15
Maximum temperature heating at minimum compressor speed 70 60 62 56.5
High temperature heating at minimum compressor speed 70 60 47 43
Frost accumulation at rated compressor speed 70 60 35 33
Frost accumulation at intermediate compressor speed 70 60 35 33
OBH702G

8
NOTE: Test conditions are based on ARI 210/240.
Item Outdoor model MXZ-3C24NA MXZ-3C24NA2
Indoor type Non-Duct (06+09+09) Duct (09+09+09)
Capacity Cooling *1 Btu/h 22,000 23,600 Heating 47 *1 Btu/h 25,000 24,600
Heating 17 *2 Btu/h 19,600 19,600
Power
consumption
Cooling *1 W 1,620 2,100
Heating 47 *1 W 1,750 1,900
Heating 17 *2 W 2,580 2,440
EER Cooling 13.6 11.2
SEER Cooling 20.0 16.0
HSPF IV(V) Heating 9.8 (7.6) 9.2 (7.6)
COP Heating 4.20 3.80
([WHUQDO¿QLVK Munsell 3.0Y 7.8/1.1
Power supply V, phase, Hz 208/230, 1, 60
Max. fuse size (time delay) A 25
Min. circuit ampacity A 22.1
Fan motor F.L.A 2.43
Compressor
Model SNB220FQGMC
Winding resistance
(at 68 ºF) ȍU-V 0.95 V-W 0.95 W-U 0.95
R.L.A 12
L.R.A 13.7
Refrigerant control LEV
Sound level dB(A) 51/55
Defrost method Reverse cycle
Dimensions W in. 37-13/32 D in. 13
H in. 31-11/32
Weight lb. NA: 135/NA2: 137
Remote controller Wireless type
Control voltage (by built-in transformer) 12-24 VDC
Refrigerant piping Not supplied (optional parts)
Valve size Liquid in. 1/4
Gas in. A:1/2 B,C:3/8
Connection method
Indoor Flared
Outdoor Flared
Refrigerant charge (R410A) lb. 6lb. 13oz.
Refrigeration oil (Model) ÀR]/ 23.7 (0.7) (FV50S)
Unit: °F
Mode Test Indoor air condition Outdoor air condition
Dry bulb Wet bulb Dry bulb Wet bulb
Cooling *1: "A" 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)
Low ambient cooling steady state at minimum compressor speed 80 67 67 (53.5)
Intermediate cooling steady state at intermediate compressor speed 80 67 87 (69)
Heating *1: Standard rating-heating at rated compressor speed 70 60 47 43
*2: Low temperature heating at maximum compressor speed 70 60 17 15
Maximum temperature heating at minimum compressor speed 70 60 62 56.5
High temperature heating at minimum compressor speed 70 60 47 43
Frost accumulation at rated compressor speed 70 60 35 33
Frost accumulation at intermediate compressor speed 70 60 35 33
OBH702G

9
NOTE: Test conditions are based on ARI 210/240.
Item Outdoor model MXZ-3C30NA MXZ-3C30NA2
Indoor type Non-Duct (09+09+12) Duct (09+09+12)
Capacity Cooling *1 Btu/h 28,400 27,400 Heating 47 *1 Btu/h 28,600 27,600
Heating 17 *2 Btu/h 21,000 21,000
Power
consumption
Cooling *1 W 2,680 2,840
Heating 47 *1 W 2,150 2,220
Heating 17 *2 W 2,740 2,820
EER Cooling 10.6 9.6
SEER Cooling 19.0 16.2
HSPF IV(V) Heating 10.6 (8.0) 9.6 (8.0)
COP Heating 3.90 3.64
([WHUQDO¿QLVK Munsell 3.0Y 7.8/1.1
Power supply V, phase, Hz 208/230, 1, 60
Max. fuse size (time delay) A 25
Min. circuit ampacity A 22.1
Fan motor F.L.A 2.43
Compressor
Model SNB220FQGMC
Winding resistance
(at 68 ºF) ȍU-V 0.95 V-W 0.95 W-U 0.95
R.L.A 12
L.R.A 13.7
Refrigerant control LEV
Sound level dB(A) 52/56
Defrost method Reverse cycle
Dimensions W in. 37-13/32 D in. 13
H in. 31-11/32
Weight lb. NA: 135/NA2: 137
Remote controller Wireless type
Control voltage (by built-in transformer) 12-24 VDC
Refrigerant piping Not supplied (optional parts)
Valve size Liquid in. 1/4
Gas in. A:1/2 B,C:3/8
Connection method
Indoor Flared
Outdoor Flared
Refrigerant charge (R410A) lb. 6lb. 13oz.
Refrigeration oil (Model) ÀR]/ 23.7 (0.7) (FV50S)
Unit: °F
Mode Test Indoor air condition Outdoor air condition
Dry bulb Wet bulb Dry bulb Wet bulb
Cooling *1: "A" 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)
Low ambient cooling steady state at minimum compressor speed 80 67 67 (53.5)
Intermediate cooling steady state at intermediate compressor speed 80 67 87 (69)
Heating *1: Standard rating-heating at rated compressor speed 70 60 47 43
*2: Low temperature heating at maximum compressor speed 70 60 17 15
Maximum temperature heating at minimum compressor speed 70 60 62 56.5
High temperature heating at minimum compressor speed 70 60 47 43
Frost accumulation at rated compressor speed 70 60 35 33
Frost accumulation at intermediate compressor speed 70 60 35 33
OBH702G

10
NOTE: Test conditions are based on ARI 210/240.
Item Outdoor model MXZ-4C36NA MXZ-4C36NA2
Indoor type Non-Duct (09+09+09+09) Duct (09+09+09+09)
Capacity Cooling *1 Btu/h 35,400 34,400 Heating 47 *1 Btu/h 36,000 34,400
Heating 17 *2 Btu/h 26,600 26,600
Power
consumption
Cooling *1 W 3,760 3,940
Heating 47 *1 W 3,020 3,100
Heating 17 *2 W 3,440 3,540
EER Cooling 9.4 8.7
SEER Cooling 19.2 16.0
HSPF IV(V) Heating 11.0 (8.4) 9.8 (8.4)
COP Heating 3.50 3.25
([WHUQDO¿QLVK Munsell 3.0Y 7.8/1.1
Power supply V, phase, Hz 208/230, 1, 60
Max. fuse size (time delay) A 25
Min. circuit ampacity A 22.1
Fan motor F.L.A 2.43
Compressor
Model SNB220FQGMC
Winding resistance
(at 68 ºF) ȍU-V 0.95 V-W 0.95 W-U 0.95
R.L.A 12
L.R.A 13.7
Refrigerant control LEV
Sound level dB(A) 54/56
Defrost method Reverse cycle
Dimensions W in. 37-13/32 D in. 13
H in. 31-11/32
Weight lb. NA: 137/NA2: 139
Remote controller Wireless type
Control voltage (by built-in transformer) 12-24 VDC
Refrigerant piping Not supplied (optional parts)
Valve size Liquid in. 1/4
Gas in. A:1/2 B,C,D:3/8
Connection method
Indoor Flared
Outdoor Flared
Refrigerant charge (R410A) lb. 6lb. 13oz.
Refrigeration oil (Model) ÀR]/ 23.7 (0.7) (FV50S)
Unit: °F
Mode Test Indoor air condition Outdoor air condition
Dry bulb Wet bulb Dry bulb Wet bulb
Cooling *1: "A" 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)
Low ambient cooling steady state at minimum compressor speed 80 67 67 (53.5)
Intermediate cooling steady state at intermediate compressor speed 80 67 87 (69)
Heating *1: Standard rating-heating at rated compressor speed 70 60 47 43
*2: Low temperature heating at maximum compressor speed 70 60 17 15
Maximum temperature heating at minimum compressor speed 70 60 62 56.5
High temperature heating at minimum compressor speed 70 60 47 43
Frost accumulation at rated compressor speed 70 60 35 33
Frost accumulation at intermediate compressor speed 70 60 35 33
OBH702G

11
NOTE: Test conditions are based on ARI 210/240.
Item Outdoor model MXZ-5C42NA MXZ-5C42NA2
Indoor type Non-Duct (06+09+09+09+09) Duct (09+09+09+09+09)
Capacity Cooling *1 Btu/h 40,500 37,500 Heating 47 *1 Btu/h 45,000 41,000
Heating 17 *2 Btu/h 30,500 29,100
Power
consumption
Cooling *1 W 4,403 4,112
Heating 47 *1 W 3,575 3,463
Heating 17 *2 W 4,800 5,500
EER Cooling 9.2 9.0
SEER Cooling 19.7 15.2
HSPF IV(V) Heating 10.3 (7.7) 9.1 (7.7)
COP Heating 3.69 3.47
([WHUQDO¿QLVK Munsell 3.0Y 7.8/1.1
Power supply V, phase, Hz 208/230, 1, 60
Max. fuse size (time delay) A 40
Min. circuit ampacity A NA: 31.9/NA2: 32.5
Fan motor F.L.A NA: 1.9 /NA2: 2.43
Compressor
Model MNB33FBTMC-L
Winding resistance
(at 68 ºF) ȍU-V 0.30 V-W 0.30 W-U 0.30
R.L.A 20
L.R.A 28.8
Refrigerant control LEV
Sound level dB(A) 56/58
Defrost method Reverse cycle
Dimensions W in. 37-13/32 D in. 13
H in. 41-17/64
Weight lb. 189
Remote controller Wireless type
Control voltage (by built-in transformer) 12-24 VDC
Refrigerant piping Not supplied (optional parts)
Valve size Liquid in. 1/4
Gas in. A:1/2 B,C,D,E: 3/8
Connection method
Indoor Flared
Outdoor Flared
Refrigerant charge (R410A) lb. 8 lb. 13 oz.
Refrigeration oil (Model) ÀR]/ 37.2 (1.1) (FV50S)
Unit: °F
Mode Test Indoor air condition Outdoor air condition
Dry bulb Wet bulb Dry bulb Wet bulb
Cooling *1: "A" 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)
Low ambient cooling steady state at minimum compressor speed 80 67 67 (53.5)
Intermediate cooling steady state at intermediate compressor speed 80 67 87 (69)
Heating *1: Standard rating-heating at rated compressor speed 70 60 47 43
*2: Low temperature heating at maximum compressor speed 70 60 17 15
Maximum temperature heating at minimum compressor speed 70 60 62 56.5
High temperature heating at minimum compressor speed 70 60 47 43
Frost accumulation at rated compressor speed 70 60 35 33
Frost accumulation at intermediate compressor speed 70 60 35 33
OBH702G

12
NOTE: Test conditions are based on ARI 210/240.
Item Outdoor model MXZ-2C20NAHZ MXZ-2C20NAHZ2
Indoor type Non-Duct (09+09) Duct (09+12)
Capacity Cooling *1 Btu/h 18,000 20,000 Heating 47 *1 Btu/h 22,000 22,000
Heating 17 *2 Btu/h 22,000 22,000
Power
consumption
Cooling *1 W 1,334 1,819
Heating 47 *1 W 1,612 1,748
Heating 17 *2 W 3,071 3,224
EER Cooling 13.5 11.0
SEER Cooling 17.0 15.0
HSPF IV(V) Heating 9.8 (7.8) 9.5 (7.8)
COP Heating 4.00 3.69
([WHUQDO¿QLVK Munsell 3.0Y 7.8/1.1
Power supply V, phase, Hz 208/230, 1, 60
Max. fuse size (time delay) A 40
Min. circuit ampacity A NA: 28.9/NA2: 29.5
Fan motor F.L.A NA: 1.9/NA2: 2.43
Compressor
Model MNB33FBTMC-L
Winding resistance
(at 68 ºF) ȍU-V 0.30 V-W 0.30 W-U 0.30
R.L.A 20
L.R.A 28.8
Refrigerant control LEV
Sound level dB(A) 54/58
Defrost method Reverse cycle
Dimensions W in. 37-13/32 D in. 13
H in. 41-17/64
Weight lb. 187
Remote controller Wireless type
Control voltage (by built-in transformer) 12-24 VDC
Refrigerant piping Not supplied (optional parts)
Valve size Liquid in. 1/4
Gas in. A,B: 3/8
Connection method
Indoor Flared
Outdoor Flared
Refrigerant charge (R410A) lb. 8 lb. 13 oz.
Refrigeration oil (Model) ÀR]/ 37.2 (1.1) (FV50S)
Unit: °F
Mode Test Indoor air condition Outdoor air condition
Dry bulb Wet bulb Dry bulb Wet bulb
Cooling *1: "A" 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)
Low ambient cooling steady state at minimum compressor speed 80 67 67 (53.5)
Intermediate cooling steady state at intermediate compressor speed 80 67 87 (69)
Heating *1: Standard rating-heating at rated compressor speed 70 60 47 43
*2: Low temperature heating at maximum compressor speed 70 60 17 15
Maximum temperature heating at minimum compressor speed 70 60 62 56.5
High temperature heating at minimum compressor speed 70 60 47 43
Frost accumulation at rated compressor speed 70 60 35 33
Frost accumulation at intermediate compressor speed 70 60 35 33
OBH702G

13
NOTE: Test conditions are based on ARI 210/240.
Item Outdoor model MXZ-3C24NAHZ MXZ-3C24NAHZ2
Indoor type Non-Duct (06+06+09) Duct (09+09+09)
Capacity Cooling *1 Btu/h 22,000 23,600 Heating 47 *1 Btu/h 25,000 24,600
Heating 17 *2 Btu/h 25,000 24,600
Power
consumption
Cooling *1 W 1,630 2,360
Heating 47 *1 W 1,725 1,871
Heating 17 *2 W 3,557 3,795
EER Cooling 13.5 10.0
SEER Cooling 19.0 15.5
HSPF IV(V) Heating 10.0 (7.4) 9.0 (7.4)
COP Heating 4.25 3.80
([WHUQDO¿QLVK Munsell 3.0Y 7.8/1.1
Power supply V, phase, Hz 208/230, 1, 60
Max. fuse size (time delay) A 40
Min. circuit ampacity A NA: 29.9/NA2: 30.5
Fan motor F.L.A NA: 1.9/NA2: 2.43
Compressor
Model MNB33FBTMC-L
Winding resistance
(at 68 ºF) ȍU-V 0.30 V-W 0.30 W-U 0.30
R.L.A 20
L.R.A 28.8
Refrigerant control LEV
Sound level dB(A) 54/58
Defrost method Reverse cycle
Dimensions W in. 37-13/32 D in. 13
H in. 41-17/64
Weight lb. 189
Remote controller Wireless type
Control voltage (by built-in transformer) 12-24 VDC
Refrigerant piping Not supplied (optional parts)
Valve size Liquid in. 1/4
Gas in. A: 1/2 B,C: 3/8
Connection method
Indoor Flared
Outdoor Flared
Refrigerant charge (R410A) lb. 8 lb. 13 oz.
Refrigeration oil (Model) ÀR]/ 37.2 (1.1) (FV50S)
Unit: °F
Mode Test Indoor air condition Outdoor air condition
Dry bulb Wet bulb Dry bulb Wet bulb
Cooling *1: "A" 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)
Low ambient cooling steady state at minimum compressor speed 80 67 67 (53.5)
Intermediate cooling steady state at intermediate compressor speed 80 67 87 (69)
Heating *1: Standard rating-heating at rated compressor speed 70 60 47 43
*2: Low temperature heating at maximum compressor speed 70 60 17 15
Maximum temperature heating at minimum compressor speed 70 60 62 56.5
High temperature heating at minimum compressor speed 70 60 47 43
Frost accumulation at rated compressor speed 70 60 35 33
Frost accumulation at intermediate compressor speed 70 60 35 33
OBH702G

14
NOTE: Test conditions are based on ARI 210/240.
Item Outdoor model MXZ-3C30NAHZ MXZ-3C30NAHZ2
Indoor type Non-Duct (09+09+12) Duct (09+09+12)
Capacity Cooling *1 Btu/h 28,400 27,400 Heating 47 *1 Btu/h 28,600 27,600
Heating 17 *2 Btu/h 28,600 27,600
Power
consumption
Cooling *1 W 2,272 2,661
Heating 47 *1 W 2,096 2,187
Heating 17 *2 W 4,192 4,258
EER Cooling 12.5 10.3
SEER Cooling 18.0 16.0
HSPF IV(V) Heating 11.0 (8.5) 9.8 (7.7)
COP Heating 4.00 3.70
([WHUQDO¿QLVK Munsell 3.0Y 7.8/1.1
Power supply V, phase, Hz 208/230, 1, 60
Max. fuse size (time delay) A 40
Min. circuit ampacity A NA: 29.9/NA2: 30.5
Fan motor F.L.A NA: 1.9/NA2: 2.43
Compressor
Model MNB33FBTMC-L
Winding resistance
(at 68 ºF) ȍU-V 0.30 V-W 0.30 W-U 0.30
R.L.A 20
L.R.A 28.8
Refrigerant control LEV
Sound level dB(A) 54/58
Defrost method Reverse cycle
Dimensions W in. 37-13/32 D in. 13
H in. 41-17/64
Weight lb. 189
Remote controller Wireless type
Control voltage (by built-in transformer) 12-24 VDC
Refrigerant piping Not supplied (optional parts)
Valve size Liquid in. 1/4
Gas in. A: 1/2 B,C: 3/8
Connection method
Indoor Flared
Outdoor Flared
Refrigerant charge (R410A) lb. 8 lb. 13 oz.
Refrigeration oil (Model) ÀR]/ 37.2 (1.1) (FV50S)
Unit: °F
Mode Test Indoor air condition Outdoor air condition
Dry bulb Wet bulb Dry bulb Wet bulb
Cooling *1: "A" 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)
Low ambient cooling steady state at minimum compressor speed 80 67 67 (53.5)
Intermediate cooling steady state at intermediate compressor speed 80 67 87 (69)
Heating *1: Standard rating-heating at rated compressor speed 70 60 47 43
*2: Low temperature heating at maximum compressor speed 70 60 17 15
Maximum temperature heating at minimum compressor speed 70 60 62 56.5
High temperature heating at minimum compressor speed 70 60 47 43
Frost accumulation at rated compressor speed 70 60 35 33
Frost accumulation at intermediate compressor speed 70 60 35 33
OBH702G

15
OUTDOOR UNIT
MICROPHONE
39.4 in.
Test conditions
Cooling: Dry-bulb temperature 95°F Wet-bulb temperature 75°F
Heating: Dry-bulb temperature 45°F Wet-bulb temperature 43°F
CoolingHigh
FUNCTION
FAN SPEED
HeatingHigh
54
SPL(dB(A))
56
LINE
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL 0dB 0.0002 MICRO BAR
BAND CENTER FREQUENCIES H
MXZ-4C36NA
MXZ-4C36NA2
MXZ-3C30NA
MXZ-3C30NA2
CoolingHigh
FUNCTION
FAN SPEED
HeatingHigh
52
SPL(dB(A))
56
LINE
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL 0dB 0.0002 MICRO BAR
BAND CENTER FREQUENCIES H
CoolingHigh
FUNCTION
FAN SPEED
HeatingHigh
51
SPL(dB(A))
55
LINE
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL 0dB 0.0002 MICRO BAR
BAND CENTER FREQUENCIES H
CoolingHigh
FUNCTION
FAN SPEED
HeatingHigh
50
SPL(dB(A))
54
LINE
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL 0dB 0.0002 MICRO BAR
BAND CENTER FREQUENCIES H
MXZ-2C20NA2 MXZ-3C24NA
MXZ-3C24NA2
NOISE CRITERIA CURVES
4
OBH702G

16
CoolingHigh
FUNCTION
FAN SPEED
HeatingHigh
54
SPL(dB(A))
58
LINE
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL 0dB 0.0002 MICRO BAR
BAND CENTER FREQUENCIES H
MXZ-2C20NAHZ
MXZ-2C20NAHZ2
CoolingHigh
FUNCTION
FAN SPEED
HeatingHigh
54
SPL(dB(A))
58
LINE
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL 0dB 0.0002 MICRO BAR
BAND CENTER FREQUENCIES H
MXZ-3C24NAHZ
MXZ-3C24NAHZ2 MXZ-3C30NAHZ MXZ-3C30NAHZ2
CoolingHigh
FUNCTION
FAN SPEED
HeatingHigh
54
SPL(dB(A))
58
LINE
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL 0dB 0.0002 MICRO BAR
BAND CENTER FREQUENCIES H
CoolingHigh
FUNCTION
FAN SPEED
HeatingHigh
56
SPL(dB(A))
58
LINE
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL 0dB 0.0002 MICRO BAR
BAND CENTER FREQUENCIES H
MXZ-5C42NA
MXZ-5C42NA2
OBH702G

17
Connecting
wire hole
1-25/32”
18-1/8
29/32”
3-5/16” 5-5/16”
11-25/32”
14-3/16”
27-15/16”9-7/16”
7-7/8”
1-3/16”33-1/16”
Unit A
GAS
GAS
LIQ
LIQ LIQ 1/4”(ø6.35)FLARE
GAS 3/8”(ø9.52)FLARE
Unit B
Connecting
wire hole
1-1/32” 13”
2-19/32”
1/2”
(Bolt Pitch)
(Foundation Bolt M8)
4-(13/32” 13/16”) Oval Hole
3-ø(1-5/16”) Drain hole
Air
Inlet
Air Inlet
Air
Outlet
14-3/16”
15/32” 23/32”
21/32” 1-11/32”
2-9/16” 12-3/8”8-5/32”
6-21/32” 6-23/32”19-11/16”
11/16”11/16”
15-19/32”
Handle
MXZ-2C20NA2 Unit: inch (mm)
OUTLINES AND DIMENSIONS
5
Lock nut Connector
Grounding terminal
Conduit
cover
OBH702G

18
MXZ-3C24NA MXZ-3C24NA2
MXZ-3C30NA MXZ-3C30NA2 Unit: inch (mm)
Lock nut
Conduit plates
Conduit connector
OBH702G

19
MXZ-4C36NA MXZ-4C36NA2 Unit: inch (mm)
Lock nut
Conduit plates
Conduit connector
OBH702G

20
MXZ-5C42NA MXZ-5C42NA2 Unit: inch (mm)
Lock nut Conduit connector
Conduit plate Under
Conduit plate Top
OBH702G