Daikin DAX Commercial User manual

SS-DAX www.daikinac.com 01/23
ELECTRIC AIR HANDLERS
FOR 7½ & 10-TON SPLIT SYSTEMS
■Standard Features
• Uplow or horizontal (le side) installaon posions in
7½ and 10-ton cooling only or heat pump applicaons
• Circuited for use with one (1) 7½-ton or one
(1) 10-ton cooling-only or heat pump system.
Also circuited for use with two (2) 4-ton or
two (2) 5-ton cooling-only units
• TXV Control; Units have two (2) thermal
expansion valves
• DAX units feature two 5-speed direct-drive motors
• Copper tube/aluminum n coils
• AHRI Cered; ETL Listed
* Complete warranty details available from your local dealer or at www.daikincomfort.com.
DAX Commercial
■Contents
Nomenclature ...............................2
Product Specicaons ..................3
Airow Data ..................................4
Temperature Rise .........................6
Electrical Heater Kits.....................7
Dimensions....................................8
Wiring Diagrams ...........................9
Accessories .................................11
■Cabinet Features
• Heavy-gauge, reinforced, galvanized-steel cabinet
• Fully insulated with berglass blanket
• Horizontal and vercal condensate pans
• Built-in lter rack (2" lter included)
• Entry on top of panel for both low and high voltage
• Removable access panels make
servicing of unit faster and easier

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Nomenclature
D A X 120 4 4 A
1234,5,6 789
Brand Engineering*
D - Daikin Major/Minor Revisions
*Not used for inventory management
Product Type Electrical
A - Single-Piece Air Handler 3 - 208/230 V Three-Phase 60 Hz
4 - 460 V Three-Phase 60 Hz
Refrigerant
 4- R- 410A
X - Mul-Posion, 5-Speed
Direct - Drive Motor
Nominal Capacity Range
090 - 7½ tons
120 - 10 tons

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DAX Specifications
DAX09043** DAX09044** DAX12043** DAX12044**

Cooling (BTU/h) 90,000 90,000 120,000 120,000
Heang (kW) 15, 20, 30 15, 20, 30 15, 20, 30 15, 20, 30
CFM 3,000 3,000 4,000 4,000

Voltage-Hz-Phase 208/240-60-3 460-60-3 208/240-60-3 460-60-3
Voltage Range 197 - 253 414-506 197 - 253 414-506
FLA (Total) 13.8 4.6 13.8 4.6
Minimum Circuit Ampacity 15.5/15.5 5.2 15.5/15.5 5.2

Type Direct Drive Direct Drive Direct Drive Direct Drive
Horse Power 1 1 1 1
Voltage-Hz-Phase 208/240-60-3 460-60-3 208/240-60-3 460-60-3
FLA/ LRA 6.9/47.7 2.3/23.9 6.9/47.7 2.3/23.9

Wheel Dia. & Width (Qty.) 11 x 10 (2) 11 x 10 (2) 11 x 10 (2) 11 x 10 (2)
Nominal Airow (Ft./Min.) 3,000 3,000 4,000 4,000
Transformer Standard Standard Standard Standard
Blower Relay Standard Standard Standard Standard

Disposable Filter Size / Qty 16”x20”x2”/ 2
20”x20”x2”/ 2
16”x20”x2”/ 2
20”x20”x2”/ 2
16”x20”x2”/ 2
20”x20”x2”/ 2
16”x20”x2”/ 2
20”x20”x2”/ 2
Coil Area (sq. .) 10 10 10 10
FPI - Rows 14 - 4 14 - 4 14 - 4 14 - 4
Expansion Valve Qty. 2 2 2 2
Refrigerant R-410A R-410A R-410A R-410A
Liquid Connecon (Qty.) ⅜” (2) * ⅜” (2) * ⅜” (2) * ⅜” (2) *
Sucon Connecon (Qty.) 1⅛” (2) 1⅛” (2) 1⅛” (2) * 1⅛” (2) *
Condensate Drain ¾ FPT ¾ FPT ¾ FPT ¾ FPT
 430 430 430 430
* For two refrigerant lines

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DAX Airflow Data

 
 ESP
2   BHP  ESP   BHP
T1
0.1 2124 558 0.06
T1
0.1 2125 552 0.06
0.2 1635 566 0.06 0.2 1583 553 0.06
0.3 1445 611 0.07 0.3 1132 591 0.07
0.4 1270 662 0.08 0.4 911 653 0.07
0.5 1079 715 0.08 0.5
0.6 855 765 0.09 0.6
0.7 0.7
0.8 0.8
T2
0.1 3069 727 0.21
T2
0.1 3125 708 0.20
0.2 2953 761 0.22 0.2 3006 746 0.21
0.3 2843 794 0.23 0.3 2910 778 0.22
0.4 2731 829 0.24 0.4 2805 810 0.23
0.5 2594 869 0.25 0.5 2690 844 0.24
0.6 2453 909 0.26 0.6 2553 882 0.25
0.7 2310 947 0.27 0.7 2414 919 0.26
0.8 2189 981 0.28 0.8 2295 953 0.27
T3
0.1 3069 727 0.21
T3
0.1 3125 708 0.20
0.2 2953 761 0.22 0.2 3006 746 0.21
0.3 2843 794 0.23 0.3 2910 778 0.22
0.4 2731 829 0.24 0.4 2805 810 0.23
0.5 2594 869 0.25 0.5 2690 844 0.24
0.6 2453 909 0.26 0.6 2553 882 0.25
0.7 2310 947 0.27 0.7 2414 919 0.26
0.8 2189 981 0.28 0.8 2295 953 0.27
T4
0.1 3456 794 0.29
T4
0.1 3509 776 0.28
0.2 3343 825 0.30 0.2 3395 809 0.29
0.3 3242 856 0.31 0.3 3300 839 0.30
0.4 3137 886 0.32 0.4 3203 869 0.31
0.5 3024 919 0.33 0.5 3102 899 0.33
0.6 2907 953 0.34 0.6 2990 931 0.34
0.7 2780 988 0.36 0.7 2876 963 0.35
0.8 2659 1023 0.37 0.8 2765 995 0.36

0.1 3785 850 0.47

0.1 3869 838 0.46
0.2 3688 875 0.48 0.2 3757 867 0.48
0.3 3590 904 0.50 0.3 3662 896 0.49
0.4 3500 931 0.51 0.4 3559 924 0.51
0.5 3407 958 0.53 0.5 3470 951 0.53
0.6 3310 987 0.54 0.6 3377 979 0.54
0.7 3176 1021 0.56 0.7 3282 1007 0.56
0.8 3050 1058 0.58 0.8 3163 1040 0.57
*Above table is for dry coil with lter in place. SCFM correcon for wet coil results in 4%reducon.
NOTES:
• Any adjustment made to the blower should not cause the motor to draw more than the motors rated RLA.
• Applicaons that exceed the above could require a larger motor.

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DAX Airflow Data (cont.)

 
 ESP
2   BHP  ESP   BHP
T1
0.1 2527 622 0.17
T1
0.1 2576 618 0.16
0.2 2396 663 0.18 0.2 2460 661 0.18
0.3 2239 711 0.19 0.3 2328 702 0.19
0.4 2086 754 0.20 0.4 2173 747 0.20
0.5 1936 795 0.21 0.5 2016 789 0.21
0.6 1804 833 0.22 0.6 1867 832 0.22
0.7 1672 870 0.23 0.7 1717 875 0.23
0.8 1507 903 0.24 0.8 1514 920 0.25
T2
0.1 4020 894 0.55
T2
0.1 4094 879 0.54
0.2 3913 921 0.57 0.2 3978 906 0.56
0.3 3815 948 0.59 0.3 3888 932 0.58
0.4 3728 974 0.60 0.4 3800 959 0.59
0.5 3621 1000 0.62 0.5 3728 985 0.61
0.6 3533 1026 0.63 0.6 3640 1010 0.63
0.7 3441 1055 0.65 0.7 3553 1035 0.64
0.8 3328 1088 0.67 0.8 3460 1062 0.66
T3
0.1 3785 850 0.47
T3
0.1 3869 838 0.46
0.2 3688 875 0.48 0.2 3757 867 0.48
0.3 3590 904 0.50 0.3 3662 896 0.49
0.4 3500 931 0.51 0.4 3559 924 0.51
0.5 3407 958 0.53 0.5 3470 951 0.53
0.6 3310 987 0.54 0.6 3377 979 0.54
0.7 3176 1021 0.56 0.7 3282 1007 0.56
0.8 3050 1058 0.58 0.8 3163 1040 0.57
T4
0.1 4488 975 0.56
T4
0.1 4519 956 0.55
0.2 4385 997 0.57 0.2 4416 982 0.56
0.3 4291 1021 0.58 0.3 4324 1006 0.57
0.4 4210 1046 0.60 0.4 4245 1031 0.59
0.5 4130 1069 0.61 0.5 4164 1056 0.60
0.6 4050 1092 0.62 0.6 4087 1079 0.62
0.7 3972 1115 0.64 0.7 4008 1103 0.63
0.8 3893 1138 0.65 0.8 3934 1126 0.64

0.1 4601 1005 0.81

0.1 4723 983 0.80
0.2 4501 1031 0.83 0.2 4623 1006 0.81
0.3 4408 1055 0.85 0.3 4536 1031 0.83
0.4 4329 1078 0.87 0.4 4453 1055 0.85
0.5 4252 1102 0.89 0.5 4373 1079 0.87
0.6 4175 1124 0.91 0.6 4294 1103 0.89
0.7 4099 1148 0.93 0.7 4219 1125 0.91
0.8 4022 1171 0.95 0.8 4143 1148 0.93
*Above table is for dry coil with lter in place. SCFM correcon for wet coil results in 4% reducon.

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Temperature Rise Range
 
       
208 240 480 208 240 480
DAX0904**
15
2800 12 16 16
DAX1204**
15
3800 912 12
2900 12 16 16 3900 912 12
3000 11 15 15 4000 912 12
3100 11 15 15 4100 912 12
3200 10 14 14 4200 811 11
20
2800 16 22 22
20
3800 12 17 17
2900 16 21 21 3900 12 16 16
3000 16 21 21 4000 12 16 16
3100 16 20 20 4100 12 15 15
3200 15 20 20 4200 11 15 15
30
2800 24 32 32
30
3800 19 25 25
2900 23 31 31 3900 18 24 24
3000 23 30 30 4000 18 24 24
3100 21 29 29 4100 17 23 23
3200 21 29 29 4200 17 23 23

1. Above table are calculated with both stages of electric heat engaged (2-stage heat systems). Divide the temperature rise from the table by 2 for 1st stage
operaon for systems using staged electric heat.
2. Temperature rise data are in Degrees Fahrenheit.

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Electric Heater Kits







     
DAX0904**
and
DAX1204**
None N/A 208-240/3/60 N/A N/A 15.5 / 15.5 20 / 20
AHKD15-3A 15 208-240/3/60 1 56 56.3 / 62.4 60 / 70
AHKD20-3A 20 208-240/3/60 2 59 69.4/77.4 70 / 80
AHKD30-3A 30 208-240/3/60 2 60 95.4/108 100 / 110
None N/A 460/3/60 N/A N/A 5.2 15
AHKD15-4A 15 480/3/60 1 55 28.3 30
AHKD20-4A 20 480/3/60 2 57 35.8 40
AHKD30-4A 30 480/3/60 2 58 50.9 60
¹ Minimum Circuit Ampacity
² Maximum Overcurrent Protecon

• These air handlers do not have factory-installed electric heat. The above-listed kits are the ONLY heater kits that
can be used with this commercial series. They are available for purchase as eld-installed accessories.
• The electrical characteriscs of the air handler, electric heater kits, and building power supply must be compable.

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Dimensions
Duct Connection Sizing without Electric Heaters
 
A B C D
13⅛” 40” 24” 48”
Minimum Supply and Return Duct Dimensions

• 15, 20, & 30 kW Heater Kits
• Supply opening is 13⅞” x 40⅛”
1
3 -7/8
40 -1/8
1
3⅞”
40⅛”
14
11"
3-1/8"
24"
13-1/4" 10-3/8" 13-1/8"
40-1/4"
38-1/4"
48-1/8"
7"
60-1/2"
13-7/8"
19-1/8"
BLOWER END
ELECTRIC HEAT
POWER INLET
OPENING 1-1/8" SWEAT (2)
ACCESS
CONTROL
BLOWER &
3/8" LIQUID LINE (2) COIL ACCESS
DRAIN

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Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring. ⚠Warning High Voltage: Disconnect all power before servicing or installing this unit. Mulple power sources may be
present. Failure to do so may cause property damage, personal injury, or death. ⚡
DAX Wiring Diagrams
A1 A2
BC
6 4 3 2 1 5
PLF
EHK
L1 T1
BC
L2 T2 L3 T3
WH
GR
BR
BL
RD
PLM
BM1
PLF
N
G
L
C
N
G L C
M
1~ BM1
4 3 2 1 5
PLM
BM1
PLM
BM2
PLF
N
G
L
C
N
G L C
M
1~ BM2
4 3 2 1 5
PLM BM2
PK BL
BL
CB
PK
GR
BK OR
BK
RD
OR OR
RD
BK
OR
RD RD
BK
BL BL
GR GR
GND
LINE
VOLTAGE
208-230/460/3PH/60Hz
POWER AND CONTROLS WIRING DIAGRAM
DAX 090-120, 3PH
0140L07339-A
SEQ
13
BR1
13
BR2
45
42
BR2
54 24
BR1SEQ
RD GR WH BR YL PU
RD
GR
YL
GY
PU
WH
RD
BL BL BL BL
RD
M1 RD
GR
M2
COMPONENT LEGEND
NOTES
WIRE CODE
BK BLACK BL BLUE BR BROWN GR GREEN OR ORANGE PK PINK PU PURPLE RD RED WH WHITE YL YELLOW
HIGH VOLTAGE LOW VOLTAGE OPTIONAL HIGH VOLTAGE OPTIONAL LOW VOLTAGE CHASSIS GROUND
FIELD WIRING FACTORY WIRING
HIGH VOLTAGE LOW VOLTAGE EARTH GROUND
REPLACEMENT WIRE MUST BE SAME SIZE AND TYPE OF INSULATION AS ORIGINAL (AT LEAST 105° C). USE COPPER CONDUCTORS ONLY. USE N.E.C. CLASS 2 WIRE FOR ALL LOW VOLTAGE FIELD CONNECTIONS. FAN ONLY AND LOW COOLING MODES (YELLOW WIRE) ARE WIRED TO TB-T1. HIGH COOLING, LOW HEAT, AND HIGH HEAT MODES (BROWN WIRE) ARE WIRED TO TB-T2. MOVE YELLOW AND BROWN WIRES AS NEEDED (TO TB-T1 THRU TB-T5) TO MEET INSTALLATION AIRFLOW REQUIREMENTS. SEE UNIT IO MANUAL. IF EHK IS INSTALLED, CONNECT THE 6 PIN MALE PLUG INCLUDED WITH THE KIT TO THE UNIT'S EHK HARNESS. REFER TO UNIT IO MANUAL FOR BLOWER TORQUE ADJUSTMENTS. TO COMBINE HEATING STAGE 1 & 2, ADD AN 18 AWG JUMPER WIRE CONNECTING TB-W1 AND TB-W2. TO INSTALL A THIRD PARTY SAFETY DEVICE, REMOVE RED JUMPER WIRE AND CONNECT A NORMALLY CLOSED DRY CONTACT BETWEEN TB-S1 AND TB-R. ORANGE WIRE IS FACTORY TERMINATED TO THE 240/480V TAP. BLACK WIRE IS FACTORY TERMINATED TO THE COM TAP. IF SUPPLY VOLTAGE IS 208V MOVE ORANGE WIRE TO 208V TAP.
1
2
3
4
5
BC BLOWER CONTACTOR
BM BLOWER MOTOR BR BLOWER RELAY CB CIRCUIT BREAKER EHK ELECTRIC HEATER KIT GND EQUIPMENT GROUND SEQ SEQUENCER RELAY TB TERMINAL BLOCK TR TRANSFORMER
2
S1 S2 R C G W1 W2 Y1 Y2 O
TB T1 T2 T3 T4 T5
4 3 2 1 5
PLF
BM1
PLF
BM2
GR
YL
PU
WH
BR
GR
YL
PU
WH
BR
GR YL PU WH
BR 4
3 2 1 5
YL BR
BR
YL
5
3
4
TR

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DAX Wiring Diagrams (cont.)
S1 S2 R C G W1 W2 Y1 Y2 O
LOW VOLTAGE FIELD WIRING
DAX 090-120, 3PH
T1
T2 T3 T4 T5
R C G W1 W2 Y1 Y2 O
Y2
S1 S2 R C G W1 W2 Y1 Y2 O
T1
T2 T3 T4 T5
R C G W1 W2 Y1 Y2 O
1 TWO-STAGE CONDENSER UNIT
1 TWO-STAGE HEAT PUMP UNIT
S1 S2 R C G W1 W2 Y1 Y2 O
T1
T2 T3 T4 T5
R C G W1 W2 Y1 Y2 O
THERMOSTAT
2 ONE-STAGE CONDENSER UNITS
C
CONDENSER 1 CONDENSER 2
THIS IS A SYSTEM WIRING DIAGRAM SHOWING DAT MODEL SERIES WITH
FIELD CONNECTIONS. THIS DIAGRAM IS TO BE INCLUDED IN INSTALLATION
INSTRUCTIONS. A SEPARATE WIRING DIAGRAM IS CONTAINED INSIDE THE
CONTROL BOX FOR UNIT FACTORY WIRING.
THIS IS A SYSTEM WIRING DIAGRAM SHOWING DAX MODEL SERIES WITH
FIELD CONNECTIONS. THIS DIAGRAM IS TO BE INCLUDED IN INSTALLATION
INSTRUCTIONS. A SEPARATE WIRING DIAGRAM IS CONTAINED INSIDE THE
CONTROL BOX FOR UNIT FACTORY WIRING.
NOTE
:
THERMOSTAT
TERMINAL BLOCK - INDOOR UNIT
TERMINAL BLOCK - INDOOR UNIT
CONDENSER - TWO STAGE HP
THERMOSTAT
CONDENSER - TWO STAGE AC
TERMINAL BLOCK - INDOOR UNIT
Y1
PURPLE
C
PURPLEPURPLE
YELLOW
BLUE
BLUE
YELLOW Y1
C
BLUE
PURPLE Y2
BLUE
WHITE
YELLOW
PURPLE
RED
ORANGE
R C
W1
Y1 Y2
O

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Accessoires
 DAX090* DAX120*
Electric Heat Kits
AHKD15-3A X X
AHKD20-3A X X
AHKD30-3A X X
AHKD15-4A X X
AHKD20-4A X X
AHKD30-4A X X
Freeze Protecon Kit FSK04A X X
TX3N4 TXV KIt X X
TX5N4 TXV KIt X X

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