Mitsubishi Electric Smart Multi MXZ-SM36NAM-U1 Product guide

AIR CONDITIONING SYSTEMS
MODEL
MXZ-SM36/48/60NAM-U1
MXZ-SM36/42/48NAMHZ-U1

M-P0855
GENERAL LINE-UP GENERAL LINE-UP
I.GENERAL LINE-UP
Type(Btu/h)
Model Name
36,000
MXZ-SM36NAM-U1
48,000
MXZ-SM48NAM-U1
60,000
MXZ-SM60NAM-U1
Type(Btu/h)
Model Name
36,000
MXZ-SM36NAMHZ-U1
48,000
MXZ-SM48NAMHZ-U1
42,000
MXZ-SM42NAMHZ-U1
MXZ-SM modelMXZ-SM model
H2i MXZ-SM model
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MXZ-SM-NAM-U1, MXZ-SM-NAMHZ-U1
M-P0855 1
CONTENTS S-Series
I.S-Series
1. SPECIFICATIONS.................................................................................................................................... 2
2. EXTERNAL DIMENSIONS ....................................................................................................................... 5
3. CENTER OF GRAVITY ............................................................................................................................ 6
4. ELECTRICAL WIRING DIAGRAMS ......................................................................................................... 7
5. SOUND LEVELS ...................................................................................................................................... 10
6. OPERATION TEMPERATURE RANGE................................................................................................... 11
7. CAPACITY TABLES ................................................................................................................................. 12
7-1. Selection of Cooling/Heating Units .................................................................................................. 12
7-2. Correction by temperature ............................................................................................................... 18
7-3. Correction by total indoor................................................................................................................. 22
7-4. Correction by refrigerant piping length............................................................................................. 30
7-5. Correction at frost and defrost ......................................................................................................... 31
8. OPTIONAL PARTS................................................................................................................................... 32
8-1. JOINT .............................................................................................................................................. 32
8-2. HEADER.......................................................................................................................................... 33
9. ELECTRICAL WORK................................................................................................................................ 34
9-1. General cautions.............................................................................................................................. 34
9-2. Power cable specifications .............................................................................................................. 35
9-3. Power supply examples................................................................................................................... 37
10.M-NET CONTROL ................................................................................................................................... 38
10-1.Transmission cable length limitation................................................................................................ 38
10-2.Transmission cable specifications ................................................................................................... 39
10-3.System configuration restrictions..................................................................................................... 40
10-4.Address setting................................................................................................................................ 44
11.PIPING DESIGN ...................................................................................................................................... 54
11-1.R410A Piping material..................................................................................................................... 54
11-2.Piping Design .................................................................................................................................. 54
11-3.Refrigerant charging calculation ...................................................................................................... 60
12.OUTDOOR INSTALLATION .................................................................................................................... 62
12-1.Requirement on installation site ...................................................................................................... 62
12-2.Spacing............................................................................................................................................ 63
12-3.Piping direction ................................................................................................................................ 64
13.PART LOAD CAPACITY CHART............................................................................................................. 65
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2
1. SPECIFICATIONS S-Series
I.S-Series1. SPECIFICATIONS
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3
1. SPECIFICATIONS S-Series
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4
1. SPECIFICATIONS S-Series
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MXZ-SM-NAM-U1, MXZ-SM-NAMHZ-U1
5
2. EXTERNAL DIMENSIONS S-Series
2. EXTERNAL DIMENSIONS
MXZ-SM36, 48, 60NAM-U1
MXZ-SM36, 42, 48NAMHZ-U1
110<4-11/32>
45<1-25/32>
81<3-3/16>
86<3-3/8>
26<1-1/32>
369<14-17/32> 632<24-7/8>
1338<52-11/16>
362<14-1/4>
1050<41-11/32>
330<13>25<1>
370<14-9/16>
28<1-3/32> 19<3/4>
417<16-13/32>
42<1-21/32>
60.5<2-3/8>
<1-37/64>40
0
<2-7/32>56 <2-3/32>53
974<38-11/32>
Example of Notes
• • • Refrigerant GAS pipe connection (FLARE) A
1 2
• • • Refrigerant LIQUID pipe connection (FLARE) 9.52 (3/8F)
• • • Indication of STOP VALVE connection location.
Handle for moving
Handle for moving
Service panel
Ground for the power supply (*GR*marking position)
Ground for the transmission line Ground for concentration control
For the power supply
For the branch box power supply
For the transmission line
For concentration control
Terminal connection From left to right
1
2
Rear piping cover
Front piping cover
Air Intake
Bottom piping hole (Knock-Out)
Drain hole (5X 33<1-5/16>)
160
<6-5/16>
160
<6-5/16>
160
<6-5/16>
136
<5-11/32>
154
<6-1/16>
Instllation Feet
600
<23-5/8>
225
<8-27/32>
225
<8-27/32>
70
<2-3/4>
2XU Shaped notched holes (Foundation Bolt M10<W3/8>)
2X12X36 Oval holes (Foundation Bolt M10<W3/8>)
Side Air Intake
Rear Air Intake
Air Discharge
Side Air Intake
Handle for moving
Rear Air Intake
Handle for moving
60<2-3/8> 55<2-3/16>
55<2-3/16>27<1-1/16>
92<3-5/8>
75<2-15/16>
26<1-1/32> 73<2-7/8>
92<3-5/8>
55<2-3/16> 29<1-5/32>
27<1-1/16>26<1-1/32>
53<2-3/32> 60<2-3/8>
5<3/16>
60<2-3/8>
73<2-7/8>
5<3/16>
55<2-3/16>
27<1-1/16>
60<2-3/8>
73<2-7/8>
26<1-1/32>
75<2-15/16>
92<3-5/8>
60<2-3/8>
55<2-3/16>
60<2-3/8> 24<15/16>
101.5<4>
5<3/16>
24.7<31/32>
Piping Knock-Out Hole Details
When installing the conduit. Set the attachment to the inner side of each panel.
1 inch Conduit attachment
34.5<1-23/64>
22.2<7/8>
1/2 inch Conduit attachment
Scale 1:5
mm <inch>
Conduit hole (24<15/16>Knock-Out)
Conduit hole (37<1-15/32>Knock-Out)
Front piping hole (Knock-Out)
Front trunking hole (Knock-Out)
92
<3-5/8>
60
<2-3/8>
5
<3/16>
Right piping hole (Knock-Out)
Conduit hole (24<15/16>Knock-Out)
Conduit hole (37<1-15/32>Knock-Out)
Right trunking hole (Knock-Out)
92
<3-5/8>
92
<3-5/8>
Rear piping hole (Knock-Out)
Conduit hole (37<1-15/32>Knock-Out)
Conduit hole (24<15/16>Knock-Out)
Rear trunking hole (Knock-Out)
92
<3-5/8>
Max.30<1-3/16>
3 FOUNDATION BOLTS
Please secure the unit firmly with 4 foundation (M10<W3/8>) bolts. (Bolts and washers must be purchased locally.)
4 PIPING-WIRING DIRECTIONS
Piping and wiring connections can be made from 4 directions: Front, Right, Rear and Below.
Service space
<Foundation bolt height>
FOUNDATION
1 FREE SPACE(Around the unit)
The diagram below shows a basic example. Explanation of particular details are given in the installation manuals etc.
Min.15mm<19/32> Min.15mm<19/32>
FREE
Min.1000mm<39-3/8> Min.150mm<5-29/32>
2 SERVICE SPACE
Dimensions of space needed for service access are shown in the below diagram.
Min.
500
<19-11/16>
Min.
500
<19-11/16>
*1
*1B
*1C
MXZ-SM36NAMHZ MXZ-SM42NAMHZ MXZ-SM48NAMHZ MXZ-SM60NAM MXZ-SM36NAM MXZ-SM48NAM MODEL NAME DIMENSION A DIMENSION B DIMENSION C
15.88 (5/8F) 19.05 (3/4F)
15.88 (5/8F)
426 <16-25/32> 393 <15-15/32>
426 <16-25/32>
485 <19-3/32> 450 <17-23/32>
485 <19-3/32>
Unit: mm[in.]
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3. CENTER OF GRAVITY S-Series
3. CENTER OF GRAVITY
MXZ-SM36/48/60NAM-U1
MXZ-SM36/42/48NAMHZ-U1
Model
Unit: mm[in.]
XYZ
370 [14-9/16]
410 [16-9/64]
380[15]
160[6-19/64]
175[6-57/64]
165[6-1/2]
565[22-7/32]
560[22-3/64]
575[22-41/64]
MXZ-SM36/48NAM-U1
MXZ-SM60NAM-U1
MXZ-SM36/42/48NAMHZ-U1
X
G
GG
Y
Z
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M-P0855
MXZ-SM-NAM-U1, MXZ-SM-NAMHZ-U1
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4. ELECTRICAL WIRING DIAGRAMS S-Series
4. ELECTRICAL WIRING DIAGRAMS
MXZ-SM36, 48NAM-U1
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MXZ-SM-NAM-U1, MXZ-SM-NAMHZ-U1
8
4. ELECTRICAL WIRING DIAGRAMS S-Series
MXZ-SM60NAM-U1
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MXZ-SM-NAM-U1, MXZ-SM-NAMHZ-U1
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4. ELECTRICAL WIRING DIAGRAMS S-Series
MXZ-SM36, 42, 48NAMHZ-U1
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10
5. SOUND LEVELS S-Series
5. SOUND LEVELS
3-1/4ft. (1m)
4-7/8ft. (1.5m)
Measurement
location
UNIT
GROUND
Measurement condition
MXZ-SM36/48/60NAM-U1
MXZ-SM36/42/48NAMHZ-U1
64.9 59.4 57.7 55.1 54.0 48.7 42.1 34.7 58.0
70.1 64.0 59.5 55.8 54.4 49.0 43.3 35.7 59.0
63 125 250 500 1k 2k 4k 8k dB(A)
Standard Cooling 60Hz
Standard Heating 60Hz
10
20
30
40
50
60
70
80
90
63 125 250 500 1k 2k 4k 8k
NC-40
NC-30
NC-20
NC-60
NC-50
NC-70
Octave band central frequency (Hz)
Octave band sound level (dB)
Approximate minimum
audible limit on
continuous noise
Cool 60Hz
Heat 60Hz
Sound level of MXZ-SM60NAM-U1
63 125 250 500 1k 2k 4k 8k dB(A)
Standard Cooling 60Hz 61.1 53.1 48.2 46.9 44.1 39.0 31.6 24.9 49.0
Standard Heating 60Hz 64.5 57.9 53.1 51.0 47.7 42.6 36.8 29.4 53.0
10
20
30
40
50
60
70
80
90
63 125 250 500 1k 2k 4k 8k
NC-40
NC-30
NC-20
NC-60
NC-50
NC-70
Octave band central frequency (Hz)
Octave band sound level (dB)
Approximate minimum
audible limit on
continuous noise
Cool 60Hz
Heat 60Hz
Sound level of MXZ-SM36NAM-U1, MXZ-SM36NAMHZ-U1
10
20
30
40
50
60
70
80
90
63 125 250 500 1k 2k 4k 8k
NC-40
NC-30
NC-20
NC-60
NC-50
NC-70
Octave band central frequency (Hz)
Octave band sound level (dB)
Approximate minimum
audible limit on
continuous noise
Cool 60Hz
Heat 60Hz
Sound level of MXZ-SM42NAMHZ-U1
63 125 250 500 1k 2k 4k 8k dB(A)
Standard Cooling 60Hz 59.7 53.8 48.7 47.4 44.9 42.1 33.2 27.5 50.0
Standard Heating 60Hz 67.8 60.5 54.8 51.9 47.8 43.0 37.3 30.0 54.0
10
20
30
40
50
60
70
80
90
63 125 250 500 1k 2k 4k 8k
NC-40
NC-30
NC-20
NC-60
NC-50
NC-70
Octave band central frequency (Hz)
Octave band sound level (dB)
Approximate minimum
audible limit on
continuous noise
Cool 60Hz
Heat 60Hz
Sound level of MXZ-SM48NAM-U1, MXZ-SM48NAMHZ-U1
63 125 250 500 1k 2k 4k 8k dB(A)
Standard Cooling 60Hz 60.7 55.9 51.0 48.8 46.0 40.7 34.5 27.5 51.0
Standard Heating 60Hz 67.3 60.2 54.6 51.9 48.2 42.9 37.1 29.4 54.0
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6. OPERATION TEMPERATURE RANGE S-Series
6. OPERATION TEMPERATURE RANGE
30
25
20
15
10
5
-20-15-10-5 0 5 101520253035404550
-4 5 14233241505968778695104113122
Indoor temperature
Outdoor temperature
86
77
68
59
50
41
-25
-13 -4 5 14233241505968778695104113122
30
25
20
15
10
5
86
77
68
59
50
41
-20-15-10-5 0 5 101520253035404550
Indoor temperature
Outdoor temperature
*50 to 115 ºF [10 to 46 ºC] D.B.: When connecting PKFY-P06NBMU, PKFY-P08NHMU, PKFY-P04/06/08/12NLMU,
PFFY-P06/08/12NEMU, and PFFY-P06/08/12NRMU type indoor unit.
*5 to 115 °F(-15 to 46 ºC) D.B.: When using an optional front wind baffle.
However, this condition does not apply to the indoor units listed in the above note.
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7. CAPACITY TABLES S-Series
7. CAPACITY TABLES
7-1. Selection of Cooling/Heating Units
How to determine the capacity when less than or equal 100% indoor model size units are connected in total:
The purpose of this flow chart is to select the indoor and outdoor units. For other purposes, this flow chart is intended only for reference.
Fig.1 Indoor unit temperature correction Fig.2-1 Outdoor unit temperature correction (capacity) Fig.2-2 Outdoor unit temperature correction (power input)
Indoor Temperature
Ratio of cooling capacity
[°CW.B.]
[°FW.B.]
°CD.B.
°FD.B.
Ratio of cooling capacity
Outdoor Temperature
Ratio of power input
Outdoor Temperature
15 16 17 18 19 20 21 22 23 24
59 60.8 62.6 64.4 66.2 68 69.8 71.6 73.4 75.2
0.4
0.6
0.8
1.0
1.2
514
23 32 41 50 59 68 77 86 95 104 113
-15 -10 -5 0 5 10 15 20 25 30 35 40 45
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
514
23 32 41 50 59 68 77 86 95 104 113 118
0.0
0.2
0.4
0.6
0.8
1.0
1.2
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7. CAPACITY TABLES S-Series
How to determine the capacity when greater than 100% indoor model size units are connected in total:
Fig.3 Correction by total indoor Fig.4 Correction of refrigerant piping length
The purpose of this flow chart is to select the indoor and outdoor units. For other purposes, this flow chart is intended only for reference.
Total capacity of indoor units (kW)
Ratio of capacity
Ratio of power input
0 2.0 4.0 8.0 10.06.0 16.012.0 14.0
1.2
1.0
0.8
0.6
0.2
0.4
1.0
0.8
0.6
0.2
0.4
1.6
1.4
1.2
Cooling
Heating
Piping equivalent length (ft)
1.00
0.75
0.65
0.80
0.85
0.90
0.95
0.70
0.60
0.50
0.55
Cooling capacity correction factor
0 50 100 150 200 250 300 350 400 450 500 550 600
18
36
46.8
27
Total capacity of indoor unit [kBtu/h]
(x)
(x)
(x)
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7. CAPACITY TABLES S-Series
(kBtu/h)
Model Number
for indoor unit Model 04 Model 05 Model 06 Model 08 Model 12 Model 15 Model 18 Model 24 Model 27 Model 30 Model 36 Model 48 Model 54 Model 72
Model
Capacity 4.0 5.0 6.0 8.0 12.0 15.0 18.0 24.0 27.0 30.0 36.0 48.0 54.0 72.0
Capacity of indoor unit
Model
name
Capacity class
06 09 12 15 18 24 30 36
SVZ - - 12.0 - 18.0 24.0 30.0 36.0
SLZ-KF - 8.4 11.1 15.0 - - - -
SEZ-KD - 8.1 11.5 14.1 17.2 - - -
MFZ-KJ - 9.0 12.0 15.0 17.0 - - -
MLZ-KP - 9.0 12.0 - 17.2 - - -
MSZ-FH 6.0 9.0 12.0 15.0 17.2 - - -
MSZ-FS 6.0 9.0 12.0 15.0 17.2 - - -
MSZ-GL 6.0 9.0 12.0 14.0 17.2 22.5 - -
MSZ-EF - 9.0 12.0 15.0 18.0 - - -
PEAD - 9.0 12.0 15.0 18.0 24.0 30.0 36.0
PLA - - 12.0 - 18.0 24.0 30.0 36.0
<Cooling>
Design Condition
Outdoor Design Dry Bulb Temperature 98.6ºF (37.0ºC)
Total Cooling Load 30.3 kBtu/h
Room1
Indoor Design Dry Bulb Temperature 80.6ºF (27.0ºC)
Indoor Design Wet Bulb Temperature 68.0ºF (20.0ºC)
Cooling Load 13.6 kBtu/h
Room2
Indoor Design Dry Bulb Temperature 75.2ºF (24.0ºC)
Indoor Design Wet Bulb Temperature 66.2ºF (19.0ºC)
Cooling Load 16.7 kBtu/h
<Other>
Indoor/Outdoor Equivalent Piping Length 250 ft
0 50 100 150 200 250 300 350 400 450 500 550 600
0.50
0.55
0.60
0.65
0.70
0.75
0.80
0.85
0.90
0.95
1.00
1. Cooling Calculation
(1) Temporary Selection of Indoor Units
Room1
PEFY-P15 15.0 kBtu/h (Rated)
Room2
PEFY-P18 18.0 kBtu/h (Rated)
(2) Total Indoor Units Capacity
P15+ P18 = P33
(3) Selection of Outdoor Unit
The P36 outdoor unit is selected as total indoor units capacity is P33
MXZ-SM36NAM 36.0 kBtu/h
(4) Total Indoor Units Capacity Correction Calculation
Room1
Indoor Design Wet Bulb Temperature Correction (68.0ºF)
1.02 (Refer to Figure 1)
Figure 1
Indoor unit temperature correction
To be used to correct indoor unit only
Figure 2 Outdoor unit temperature correction
To be used to correct outdoor unit only
Figure 3 Correction of refrigerant piping length
Room2
Indoor Design Wet Bulb Temperature Correction (66.2ºF)
0.95 (Refer to Figure 1)
CT
= 32.4 kBtu/h
(5) Outdoor Unit Correction Calculation
Outdoor Design Dry Bulb Temperature Correction (98.6ºF)
0.98 (Refer to Figure 2)
Piping Length Correction (250 ft) 0.93 (Refer to Figure 3)
*1 G(CTi) is used only when greater than 100% indoor model size are connected in total,
refer to STANDARD CAPACITY DIAGRAM.
*1
= 32.8 kBtu/h
(6) Determination of Maximum System Capacity
CTi = 32.4 < CTo = 32.8, thus, select CTi.
CTx = CTi = 32.4 kBtu/h
Indoor
Temperature
-15 -10 -5 0 5 10 15 20 25 30 35 40 45
514
23 32 41 50 59 68 77 86 95 104 113
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
Ratio of cooling capacity
Outdoor Temperature
[°C D.B.]
[°F D.B.]
19.4°C (67.0°F) W.B
15 16 17 18 19 20 21 22 23 24
59 60.8 62.6 64.4 66.2 68 69.8 71.6 73.4 75.2
0.4
0.6
0.8
1.0
1.2
Ratio of cooling capacity
Indoor Temperature
[°CW.B.]
[°FW.B.]
18 [kBtu/h]
27 [kBtu/h]
36 [kBtu/h]
Capacity ratio
Piping equivalent length (ft)
Total capacity of indoor unit
46.8 [kBtu/h]
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7. CAPACITY TABLES S-Series
Capacity of indoor unit (kBtu/h)
Model Number
for indoor unit Model 04 Model 05 Model 06 Model 08 Model 12 Model 15 Model 18 Model 24 Model 27 Model 30 Model 36 Model 48 Model 54
Model
Capacity 4.5 5.6 6.7 9.0 13.5 17.0 20.0 27.0 30.0 34.0 40.0 54.0 60.0
(7) Comparison with Essential Load
Against the essential load 30.3 kBtu/h, the maximum system capacity is 32.4 kBtu/h: Proper outdoor units have been selected.
(8) Calculation of Maximum Indoor Unit Capacity of Each Room
CTx = CTi, thus, calculate by the calculation below
Room1
Indoor Unit Rating × Indoor Design Temperature Correction
= 15.0 × 1.02
= 15.3 kBtu/h OK: fulfills the load 13.6 kBtu/h
Room2
Indoor Unit Rating × Indoor Design Temperature Correction
= 18.0 × 0.95
= 17.1 kBtu/h OK: fulfills the load 16.7 kBtu/h
Go on to the heating trial calculation since the selected units fulfill the cooling loads of Room 1, 2.
<Heating>
Design Condition
Outdoor Design Wet Bulb Temperature 35.6ºF (2.0ºC)
Total Heating Load 34.4 kBtu/h
Room1
Indoor Design Dry Bulb Temperature 69.8ºF (21.0ºC)
Heating Load 16.3 kBtu/h
Room2
Indoor Design Dry Bulb Temperature 73.4ºF (23.0ºC)
Heating Load 18.1 kBtu/h
<Other>
Indoor/Outdoor Equivalent Piping Length 328 ft
Model
name
Capacity class
06 09 12 15 18 24 30 36
SVZ - - 12.0 - 18.0 27.0 34.0 40.0
SLZ-KF-10.213.717.1----
SEZ-KD - 10.9 13.6 18.0 17.2 - - -
MFZ-KJ - 10.9 13.0 18.0 21.0 - - -
MLZ-KP - 10.9 13.0 - 21.0 - - -
MSZ-FH 6.0 10.9 13.6 18.0 20.3 - - -
MSZ-FS 6.0 10.9 13.6 18.0 20.3 - - -
MSZ-GL 6.0 10.9 14.4 18.0 21.6 27.6 - -
MSZ-EF - 10.9 13.0 18.0 21.0 - - -
PEAD - 10.9 13.5 15.7 18.0 26.0 34.0 40.0
PLA - - 13.5 - 18.0 26.0 34.0 40.0
2. Heating Calculation
(1) Temporary Selection of Indoor Units
Room1
PEFY-P15 17.0 kBtu/h (Rated)
20.0 kBtu/h (Rated)
Room2
PEFY-P18
(2) Total Indoor Units Capacity
P15 + P18 = P33
(3) Selection of Outdoor Unit
The P36 outdoor unit is selected as total indoor units capacity is P33
MXZ-SM36NAM 42.0 kBtu/h
(4) Total Indoor Units Capacity Correction Calculation
Room1
Indoor Design Dry Bulb Temperature Correction (69.8ºF)
1.00 (Refer to Figure 4)
Room2
Indoor Design Dry Bulb Temperature Correction (73.4ºF)
0.92 (Refer to Figure 4)
CT
= 35.4 kBtu/h
Figure 4 Indoor unit temperature correction
To be used to correct indoor unit only
Figure 5 Outdoor unit temperature correction
To be used to correct outdoor unit only
15 16 17 18 19 20 21 22 23 24 25 26 27
59 60.8 62.6 64.4 66.2 68 69.8 71.6 73.4 75.2 77 78.8 80.6
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
Ratio of heating capacity
Indoor Temperature
[°C D.B.]
[°F D.B.]
Indoor
Temperature
-25 -20 -15 -10 -5 0 5 10 15
-13 -4 5 142332415059
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
Ratio of heating capacity
Outdoor Temperature
[°C W.B.]
[°F W.B.]
21.1°C (70.0°F) D.B.
0000005531.BOOK 15 ページ ２０２２年１月１９日 水曜日 午前１１時５６分

M-P0855
MXZ-SM-NAM-U1, MXZ-SM-NAMHZ-U1
16
7. CAPACITY TABLES S-Series
Table 1 Table of correction factor at frost and defrost
Outdoor Intake temperature <W.B.°F (°C)> 43(6) 37(4) 36(2) 32(0) 28(−2) 25(−4) 21(−6) 18(−8) 14(−10) 5(−15) −4(−20) −13(−25)
Correction factor 1.0 0.98 0.89 0.88 0.89 0.9 0.95 0.95 0.95 0.95 0.95 0.95
0 50 100 150 200 250 300 350 400 450 500 550 600
0.70
0.75
0.80
0.85
0.90
0.95
1.00
(5) Outdoor Unit Correction Calculation
Outdoor Design Wet Bulb Temperature Correction (35.6ºF)
1.0 (Refer to Figure 5)
Piping Length Correction (328 ft)
Defrost Correction
0.94 (Refer to Figure 6)
0.89 (Refer to Table 1)
Total Outdoor Unit Capacity (CTo)
CTo = Outdoor Unit Rating × G(CTi)*1× Outdoor Design Temperature Correction
× Piping Length Correction × Defrost Correction
= 42.0 × 1.0 × 0.94 × 0.89
= 35.1 kBtu/h
(6) Determination of Maximum System Capacity
Comparison of Capacity between Total Indoor Units Capacity (CTi) and Total Outdoor Unit Capacity (CTo)
CTi = 35.4 > CTo = 35.1, thus, select CTo.
CTx = CTo = 35.1 kBtu/h
(7) Comparison with Essential Load
Against the essential load 34.4 kBtu/h, the maximum system capacity is 35.1 kBtu/h: Proper outdoor units have been selected.
(8) Calculation of Maximum Indoor Unit Capacity of Each Room
CTx = CTo, thus, calculate by the calculation below
Room1
Maximum Capacity × Room1 Capacity after the Temperature Correction/(Room1,2 Total Capacity after the Temperature Correction
= 35.1 × (17.0 × 1.00) / (17.0 × 1.00 + 20.0 × 0.92)
= 16.9 kBtu/h OK: fulfills the load 16.3 kBtu/h
Room2
Maximum Capacity × Room1 Capacity after the Temperature Correction/(Room1,2 Total Capacity after the Temperature Correction
= 35.1 × (20.0 × 0.92) / (17.0 × 1.00 + 20.0 × 0.92)
= 18.2 kBtu/h OK: fulfills the load 18.1 kBtu/h
Completed selecting units since the selected units fulfill the heating loads of Room 1, 2.
Figure 6 Correction of refrigerant piping length
*1 G(CTi) is used only when greater than 100% indoor model size are connected in total,
refer to STANDARD CAPACITY DIAGRAM.
Capacity ratio
Piping equivalent length (ft)
Total capacity of indoor unit
n: Total number of the indoor units
k: Number of the indoor unit
c
k
: Outdoor unit power input coefficient of k indoor unit room temp.
M
k
: Number part of the k indoor unit model (e.g. P80 80)
<Cooling>
3. Power input of outdoor unit
Outdoor unit: MXZ-SM36NAM
Indoor unit 1: PEFY-P15
Indoor unit 2: PEFY-P18
(1) Rated power input of outdoor unit 2.31 kW
1.04 (Refer to “7-2. CORRECTION BY TEMPERATURE”.)
(2) Calculation of the average indoor temperature power input coefficient
Coefficient of the outdoor unit for indoor unit 1 (Outdoor temp. 98.6°F [37.0°C] D.B., Indoor temp. 68.0°F [20.0°C] W.B.)
Maximum System Capacity (CTx) = Total Outdoor unit Capacity (CTo), so use the following formula
Total Indoor units capacity
15 + 18 = 33, thus, (CTi) = 0.9 (Refer to the tables in “7-3.Correction by total indoor”.)
PIo = Outdoor unit Cooling Rated Power Input × Correction Coefficient of Indoor temperature × (CTi)
= 2.31 × 0.94 × 0.9
= 1.95 kW
0.85 (Refer to “7-2. CORRECTION BY TEMPERATURE”.)
Coefficient of the outdoor unit for indoor unit 2 (Outdoor temp. 98.6°F [37.0°C] D.B., Indoor temp. 64.4°F [18.0°C] W.B.)
Correction Coefficient of Indoor temperature = 1.04 × 15/(15 + 18) + 0.85 × 18/(15 + 18)
= 0.94
n
k=1
n
k=1
Average indoor temp. power input coefficient ( c
ave
)
k
× (Mk k)}
(4) Outdoor power input (PIo)
(3) Coefficient of the partial load (CTi)
0000005531.BOOK 16 ページ ２０２２年１月１９日 水曜日 午前１１時５６分

M-P0855
MXZ-SM-NAM-U1, MXZ-SM-NAMHZ-U1
17
7. CAPACITY TABLES S-Series
n: Total number of the indoor units
k: Number of the indoor unit
c
k
: Outdoor unit power input coefficient of k indoor unit room temp.
M
k
: Number part of the k indoor unit model (e.g. P80 80)
<Heating>
(1) Rated power input of outdoor unit 3.02 kW
1.16 (Refer to “7-2. CORRECTION BY TEMPERATURE”.)
(2) Calculation of the average indoor temperature power input coefficient
Coefficient of the outdoor unit for indoor unit 1 (Outdoor temp. 26.6°F [ 3°C] W.B., Indoor temp. 70°F [21.1°C] D.B.)
Maximum System Capacity (CTx) = Total Indoor unit Capacity (CTi), so use the following formula
PIo = Outdoor unit Heating Rated Power Input × Correction Coefficient of Indoor temperature × (CTi)
= 3.02 × 1.12 × 0.9
= 3.04 kW
1.09 (Refer to “7-2. CORRECTION BY TEMPERATURE”.)
Coefficient of the outdoor unit for indoor unit 2 (Outdoor temp. 26.6°F [ 3°C] W.B., Indoor temp. 78.8°F [26°C] D.B.)
Correction Coefficient of Indoor temperature = 1.16 × 15/(15 + 18) + 1.09 × 18/(15 + 18)
= 1.12
n
k=1
n
k=1
Average indoor temp. power input coefficient ( c
ave
)
k
× (Mk k)}
(4) Outdoor power input (PIo)
(3) Coefficient of the partial load (CTi)
Total indoor units capacity
15 + 18 = 33, thus, (CTi) = 0.9 (Refer to the tables in “7-3. Correction by total indoor”.)
0000005531.BOOK 17 ページ ２０２２年１月１９日 水曜日 午前１１時５６分

M-P0855
MXZ-SM-NAM-U1, MXZ-SM-NAMHZ-U1
18
7. CAPACITY TABLES S-Series
7-2. Correction by temperature
CITY MULTI indoor unit could have varied capacity at different designing temperature. Using the nominal cooling/heating capacity
value and the ratio below, the capacity can be observed at various temperature.
514
23 32 41 50 59 68 77 86 95 104 113
-15 -10 -5 0 5 10 15 20 25 30 35 40 45
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
514
23 32 41 50 59 68 77 86 95 104 113 118
0.0
0.2
0.4
0.6
0.8
1.0
1.2
15 16 17 18 19 20 21 22 23 24
59 60.8 62.6 64.4 66.2 68 69.8 71.6 73.4 75.2
0.4
0.6
0.8
1.0
1.2
Nominal
Cooling
capacity
Btu/h
kW
kW
SM36NAM-U1 MXZ-
36,000
10.6
2.400/2.855
SM48NAM-U1
48,000
14.1
3.665/4.245
SM60NAM-U1
60,000
17.6
4.510/5.405
Input *1
Nominal
Cooling
capacity
Btu/h
kW
kW
MXZ-
Input *1
*1 non-ducted/ducted
Indoor unit temperature correction
To be used to correct indoor unit capacity only
Outdoor unit temperature correction
To be used to correct outdoor unit only
Outdoor unit capacity is NOT affected by the indoor temperature.
Outdoor unit power input is affected by the indoor and outdoor temperatures. Please consult the sales office for details.
0000005531.BOOK 18 ページ ２０２２年１月１９日 水曜日 午前１１時５６分