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Safety considerations

Read these Safety considerations for Installation carefully be-
fore installing an air conditioner or heat pump. After complet-
ing the installation, make sure that the unit operates properly 
during the startup operation.
Instruct the customer on how to operate and maintain the 
unit.
Inform customers that they should store this Installation 
Manual with the Operation Manual for future reference.
Always use a licensed installer or contractor to install this 
product.
Improper installation can result in water or refrigerant leak-

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Meanings of 

DANGER

WARNING

CAUTION

NOTE

 and 

INFORMATION

 symbols:

DANGER  . . . . . . . .

Indicates an imminently hazardous 
situation which, if not avoided, will 
result in death or serious injury.

WARNING  . . . . . . .

Indicates a potentially hazardous 
situation which, if not avoided, 
could result in death or serious 
injury.

CAUTION . . . . . . . .

Indicates a potentially hazardous 
situation which, if not avoided, 
may result in minor or moderate 
injury. It may also be used to alert 
against unsafe practices.

NOTE . . . . . . . . . . .

Indicates situations that may result 
in equipment or property damage 
accidents only.

INFORMATION  . . .

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or additional information.

 DANGER

• 

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-

ous injury or death.

•  Do not ground units to water pipes, gas pipes, telephone 

wires, or lightning rods as incomplete grounding will result 
a severe shock hazard resulting in severe injury or death. 
Additionally, grounding to gas pipes will result a gas leak 

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•  If refrigerant gas leaks during installation, ventilate the 

area immediately. Refrigerant gas will result in producing 

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gas will result in severe injury or death.

•  After completing the installation work, check that the re-

frigerant gas does not leak throughout the system.

• 

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-

ous injury or death.

•  Safely dispose of all packing and transportation materials 

in accordance with federal/state/local laws or ordinances. 
Packing materials such as nails and other metal or wood 
parts, including plastic packing materials used for trans-
portation will result in injuries or death by suffocation.

 WARNING

• 

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work. Installation must be done in accordance with this 
installation manual. Improper installation could result in 

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•  When installing the unit in a small room, take measures to 

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-

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of an accident in a closed ambient space, could result in 

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• 

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NGCMCIGGNGEVTKEUJQEMUƂTGQTVJGWPKVHCNNKPI

•  Install the air conditioner or heat pump on a foundation 

strong enough that it can withstand the weight of the unit. 

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falling and causing injuries.

•  Take into account strong winds, typhoons, or earthquakes 

when installing. Improper installation could result in the 
unit falling and causing accidents.

•  Make sure that a separate power supply circuit is pro-

vided for this unit and that all electrical work is carried 

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or improper electrical construction could result in electric 

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• 

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connections or wires. Improper connections or installation 

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• 

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cover can be securely fastened. Improper positioning of 

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the terminals overheating.

•  Before touching electrical parts, turn off the unit. 
•  This equipment can be installed with a Ground-Fault Cir-

cuit Interrupter (GFCI). Although this is a recognized mea-
sure for additional protection, with the grounding system in 
North America, a dedicated GFCI is not necessary.

•  Securely fasten the unit terminal cover (panel). If the 

terminal cover/panel is not installed properly, dust or 

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electric shock.

•  When installing or relocating the system, keep the refriger-

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refrigerant (R410A) such as air. Any presence of air or oth-
er foreign substance in the refrigerant circuit could result 
in abnormal pressure rise or rupture, resulting in injury.

•  Do not change the setting of the protection devices. If the 

pressure switch, thermal switch, or other protection device 
is shorted and operated forcibly, or parts other than those 

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•  Do not install in a wet room such as a bathroom or laundry 

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Summary of Contents for REYQ72AATJ Series

Page 1: ...456AAYD REYQ480AAYD Please visit http www daikinac com content resources manuals for the most current version of installation KPUVTWEVKQPU P VJG GXGPV QH EQP KEVKPI KPHQTOCVKQP VJG QPNKPG KPUVCNNCVKQP...

Page 2: ...QWV VJG KPUVCNNCVKQP work Installation must be done in accordance with this installation manual Improper installation could result in YCVGT NGCMCIG GNGEVTKE UJQEM QT TG When installing the unit in a...

Page 3: ...QT WPKV HCT CYC HTQO WQTGUEGPV NCORU CU much as possible Indoor units are for indoor installation only Outdoor units can be installed either outdoors or indoors This unit is for indoor use Do not inst...

Page 4: ...ze 10 7 4 Selection of refrigerant branch kits 11 7 5 System piping length limitations 13 8 Precautions on refrigerant piping 16 8 1 Caution for brazing 16 8 2 Connecting the refrigerant piping 16 8 3...

Page 5: ...J AAYD 1 REYQ96AATJ AAYD 1 REYQ120AATJ AAYD 1 REYQ144AATJ AAYD 1 REYQ168AATJ AAYD 1 REYQ192AATJ AAYD 1 REYQ216AATJ AAYD 1 REYQ240AATJ AAYD 1 REYQ264AATJ AAYD 1 1 REYQ288AATJ AAYD 2 REYQ312AATJ AAYD 1...

Page 6: ...YD 120 312 REYQ264AATJ AAYD 132 343 REYQ288AATJ AAYD 144 374 REYQ312AATJ AAYD 156 405 REYQ336AATJ AAYD 168 436 REYQ360AATJ AAYD 180 468 REYQ384AATJ AAYD 192 499 REYQ408AATJ AAYD 204 530 REYQ432AATJ AA...

Page 7: ...eets the following requirements The foundation must be strong enough to support the weight of the unit PUVCNNCVKQP NQECVKQP KU CV VQ RTGXGPV XKDTCVKQPU CPF PQKUG IGPGTCVKQP CPF VQ JCXG UWH EKGPV UVCDK...

Page 8: ...nto account improper installation may result in the unit turning over 4 2 Weather related precautions Be sure that the air inlet of the unit is not positioned towards the main wind direction Frontal w...

Page 9: ...m REYQ72A REYQ96 168A REYQ192 240A 1 Foundation bolt holes 9 16 15 7 8 22 5 oblong holes 4 2 Pitch of foundation bolt holes 30 3 16 766 42 3 8 1076 62 7 16 1586 3 Pitch of foundation bolt holes 28 7 1...

Page 10: ...2 or more h1 b Service space 2 a 59 1 16 in 1500 mm b 19 11 16 in 500 mm In case of an installation site where sides A B C D have obsta cles the wall heights of sides A C have no impact on service sp...

Page 11: ...otectors to prevent belt damage and pay attention to the position of the unit s center of gravity NOTE Use a belt sling of d13 16 in 20 mm wide that adequately bears the weight of the unit CAUTION Lif...

Page 12: ...0 3 16 in 766 mm REYQ96 168 type 42 3 8 in 1076 mm REYQ192 240 type 62 7 16 in 1586 mm 8 Distance between foundation bolt holes REYQ72 type 15 1 16 in 383 mm REYQ96 168 type 21 3 16 in 538 mm REYQ192...

Page 13: ...including oils for fabrication must be 0 14 gr 10 ft 30 mg 10 m or less Use the following items for the refrigerant piping Material QKPVNGUU RJQURJQT FGQZKFK GF EQRRGT RKRG Size See 7 3 Selection of p...

Page 14: ...n 19 1 mm 96 7 8 in 22 2 mm 7 4 Selection of refrigerant branch kits QT RKRKPI GZCORNG TGHGT VQ 5GNGEVKQP QH RKRKPI UK G QP RCIG 9JGP WUKPI 4 0 6 LQKPVU CV VJG TUV DTCPEJ HTQO VJG QWVFQQT units choose...

Page 15: ...Indoor unit total capacity at REFNET joint HQT RKRGU HQT RKRGU KHRP26M22H9 KHRP26M22HA 18 KHRP25M33H9 KHRP25M33HA KHRP26M33H9 KHRP26M33HA KHRP25M72H9 KHRP25M72HA KHRP26M72H9 KHRP26M72HA KHRP25M73HU9 K...

Page 16: ...nnection piping kit must always be installed horizontally paying attention to the installation restrictions indicated in 2TGECWVKQPU QP TGHTKIGTCPV RKRKPI on page 16 ZCORNG QH EQPPGEVKQP Outdoor unit...

Page 17: ...ngth from the outdoor unit multi connection piping kit to the outdoor WPKV HV O Equivalent piping length from the outdoor unit multi connection piping kit to the QWVFQQT WPKV HV O Outdoor unit A B HV...

Page 18: ...F VJG CNNQYCDNG NGPIVJ TGUVTKEVKQPU CHVGT DTCPEJ KU HV O QT TCPEJ 5GNGEVQT WPKV EQPPGEVGF KP RCUU VJTQWIJ KPUVCNNCVKQP CNUQ OWUV DG UCVKU GF Necessary conditions ZCORNG 1PN VJG CNNQYCDNG NGPIVJ CHVGT...

Page 19: ...the piping has been connected make sure there is no gas leak Use Dry Nitrogen to perform a gas leak detection After cutting the slit holes it is recommended to remove burrs in the slit holes and paint...

Page 20: ...lve 9 Liquid pipe stop valve 10 Outdoor unit 11 To Branch Selector unit indoor unit 12 Valve 13 Field piping 14 CU QY 15 Stop valve service port A Valve A B Valve B C Valve C 3 Recover gas and oil fro...

Page 21: ...h suitable insulation to prevent it from coming into contact with the casing generated QPPGEVKQP HTQO VJG UVQR XCNXGU VQ VJG GNF RKRKPI ECP DG FQPG D WU ing accessory pipes supplied as accessory NOTE...

Page 22: ...the refrigerant branch kit REFNET joint or REFNET header for multiple connections of indoor units Branch Selector units and others other than outdoor units REFNET joint Mount the REFNET joint so that...

Page 23: ...g the service port cover 9 Field wiring NOTE NN GNF YKTKPI CPF EQORQPGPVU OWUV DG KPUVCNNGF D C NKEGPUGF GNGE trician and must comply with relevant local and national regulations Be sure to use a dedi...

Page 24: ...9 54 9 54 9 54 9 59 8 59 8 59 8 59 8 67 2 67 2 67 2 67 2 73 7 73 7 73 7 35 40 45 60 70 70 80 90 45 60 60 60 60 70 70 70 70 70 70 70 70 80 80 80 80 90 90 90 AWG18 16 AWG18 16 AWG18 16 AWG18 16 AWG18 16...

Page 25: ...unit A 4 Outdoor unit B 5 QPVTQN DQZ 6 Never connect the power wire 7 To outdoor unit of other system 8 7UG FWRNGZ YKTGU 0Q RQNCTKV 9 Branch Selector unit 10 Indoor unit 11 Indoor unit Cooling only Th...

Page 26: ...ms should be connected to terminals X2 and X3 on the printed circuit board of the master unit The outdoor unit that connects transmission wiring to indoor unit is the master unit The others are sub un...

Page 27: ...KPI VQ VJG IWTG DGNQY UGEWTG CPF YKTG VJG RQYGT CPF VTCPU mission wiring using the included clamp Wire so that the ground wiring does not come into contact with the compressor lead wiring If they touc...

Page 28: ...ipe high low pressure gas pipe and NKSWKF RKRG UVQR XCNXG 5GG VJG 4 CDGN CVVCEJGF VQ VJG HTQPV panel of the outdoor unit for details on the location of the service RQTV UGG VJG IWTG DGNQY 4 CDGN 5GG G...

Page 29: ...a nut 5GG 2QYGT YKTKPI EQPPGEVKQP RTQEGFWTG QP RCIG 3 Has the insulation of the main power circuit deteriorated Measure the insulation and check the insulation is above regular value in accordance wit...

Page 30: ...eady for operation blank display indication as indicated 9JGP CDQXG UKVWCVKQP ECPPQV DG EQP TOGF CHVGT OKPWVGU VJG GTTQT code can be checked on the indoor unit user interface and the outdoor unit segm...

Page 31: ...P UGVVKPI EQP TO CICKP D RWUJKPI 5 6Q NGCXG VJG GNF UGVVKPIU RWUJ 5 QPG VKOG QW YKNN TGVWTP VQ VJG default situation when shipped from factory 13 2 2 Operating the DIP switches By operating the DIP sw...

Page 32: ...door units capacity Equivalent GNF piping length Total indoor unit capacity connection ratio Refrigerant amount Total outdoor unit capacity type REYQ72 144A REYQ168 288A REYQ312 480A 295 3 ft 90 m 85...

Page 33: ...U C OKZGF TGHTKIGTCPV CFFKPI KV KP ICU HQTO may cause the refrigerant composition to change preventing normal operation Before charging check whether the refrigerant cylinder is equipped with a siphon...

Page 34: ...erant charge is larger than 22 lbs 10 kg perform step 3 till the end of the procedure 3 Pre charging can be done without compressor running by con necting the refrigerant tank only to the liquid stop...

Page 35: ...e charging the refrigerant Operating with the stop valves closed will damage the compressor After adding the refrigerant do not forget to close the cover of the service port The tightening torque for...

Page 36: ...KNN QRGTCVG CV the selected low noise level during the selected time frames The second method is to enable low noise operation based QP CP GZVGTPCN KPRWV QT VJKU QRGTCVKQP CP QRVKQPCN CEEGU sory is re...

Page 37: ...GTPCN EQPVTQN CFCRVGT KU PQV EQPPGEVGF D UJQTV EKTEWKV YKVJ VJG U UVGO QRGTCVGU CEEQTFKPI VQ QT UGVVKPI 6e target temperature during cooling operation Default value 2 Value 2 8 Te target 0 Auto 2 43 F...

Page 38: ...QP HWPEVKQP QH VJG WPKV CPF FG PG VJG NGXGN QH operation Depending on the chosen level the noise level will be lowered 3 Level 3 2 Level2 1 Level1 6JG UVCTV CPF UVQR OQOGPVU HQT VJKU HWPEVKQP CTG FG P...

Page 39: ...EJCPIGF VQ EQPVKPWQWU JGCVKPI YKNN not be provided during defrost of oil return for conditions above ambient temp 50 F 10 C and room temp 75 F 24 C Other changes limitations to the circuit apply for m...

Page 40: ...utdoor temp recovered by this temp AUX heater cannot be allowed 5 F 15 C 10 F 12 2 C 2 15 F 9 4 C 1 Default 35 F 1 66 C 2 Default 7 JGCVGT OCZ CNNQYCDNG VGOR AUX Heater is allowed to energize when the...

Page 41: ...ically energized in the event of a system failure Error codes capable of auto backup are listed in the table below Please be aware that the error codes that are not listed do not auto backup in order...

Page 42: ...to be considered as the available capacity is not the same as under basic operation For details concerning to Hi sensible applications please contact your dealer 6Q CEVKXCVG VJKU UGVVKPI WPFGT EQQNKPI...

Page 43: ...ation while working on the Branch Selec tor units and the indoor units When performing the test operation not only the outdoor units but the connected indoor units will operate as well Working on indo...

Page 44: ...th the display During the test operation it is not possible to stop the unit operation from a user interface To abort the operation press BS3 The unit will stop after 30 seconds 1 The progress rate is...

Page 45: ...HWPEVKQP Y7E A8P X9A Check connection on printed circuit board or actuator 31 36 41 NGEVTQPKE GZRCPUKQP XCNXG OCNHWPEVKQP Y8E A8P X10A Check connection on printed circuit board or actuator F3 01 03 05...

Page 46: ...emperature sensor malfunction R22T A8P X15A Check connection on printed circuit board or actuator J9 01 02 03 Temperature sensor malfunction R12T A1P X30A Check connection on printed circuit board or...

Page 47: ...A type and X type Correct the units combination 27 Assembly defect of indoor Branch Selector and outdoor units e g different models number of units or RCTV PWODGTU QT FKHHGTGPV UGTKGU CTG OKZGF Check...

Page 48: ...A type 3 2 1 1 Terminal block for power supply 2 Tester 3 White connector 3 To prevent damaging the printed circuit board touch a noncoated metal part to eliminate static electricity before pulling ou...

Page 49: ...EWNCVKQP QH VJG OCZK mum concentration of refrigerant is directly related to the humanly occupied space in to which it could leak The unit of measurement of the concentration is lbs ft 3 kg m3 the wei...

Page 50: ...47 English...

Page 51: ...Daikin Texas Technology Park 19001 Kermier Road Waller TX 77484 U S A 3P657316 1 EM20A014 2110 SP...

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