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English

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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-

age, electrical shock, fire, or explosion.

Meanings of 

DANGER

WARNING

CAUTION

, and 

NOTE

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   .  .  .

This symbol identifies useful tips 

or additional information.

 DANGER

• 

Refrigerant gas is heavier than air and replaces oxygen. A 
massive leak will result in oxygen depletion, especially in 
basements, and an asphyxiation hazard will result in seri

-

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 

and potential explosion resulting in severe injury or death.

•  If refrigerant gas leaks during installation, ventilate the 

area immediately. Refrigerant gas will result in producing 

toxic gas if it comes into contact with fire. Exposure to this 

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.

• 

Do not install unit in an area where flammable materials 
are present due to risk of explosions that will result in seri

-

ous injury or death.

•  Safely dispose 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

• 

Only qualified personnel must carry out the installation 

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

water leakage, electric shock, or fire.

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

keep the refrigerant concentration from exceeding allow

-

able safety limits. Excessive refrigerant leaks, in the event 

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

oxygen deficiency.

• 

Use only specified accessories and parts for installation 
work. Failure to use specified parts could result in water 
leakage, electric shocks, fire, or the unit falling.

•  Install the air conditioner or heat pump on a foundation 

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

A foundation of insufficient strength could result in the unit 

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 

out by qualified personnel according to local, state and 
national regulations. An insufficient power supply capacity 

or improper electrical construction could result in electric 

shocks or fire.

• 

Make sure that all wiring is secured, that specified wires 
are used, and that no external forces act on the terminal 

connections or wires. Improper connections or installation 

could result in fire.

• 

When wiring, position the wires so that the control box 

cover can be securely fastened. Improper positioning of 

the control box cover could result in electric shocks, fire, or 

the terminals overheating.

•  Before touching electrical parts, turn off the unit.
•  The circuit must be protected with the required safety de-

vice according to local and national regulations,i.e.a fuse, 
a circuit breaker or GFCI.

•  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 

water may enter the outdoor unit and could result in fire or 

electric shock.

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

ant circuit free from substances other than the specified 

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 

specified by Daikin are used, fire or explosion could result.

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2023/05/29   17:13:13

Summary of Contents for VRV RXYQ72XBYC Series

Page 1: ...rmation the online instructions are to be used Veuillez visiter http www daikinac com content resources manuals pour obtenir la version la plus r cente des instructions d installation et du manuel de...

Page 2: ...manual Improper installation could result in water leakage electric shock or fire When installing the unit in a small room take measures to keep the refrigerant concentration from exceeding allow abl...

Page 3: ...ation only Outdoor units can be installed either outdoors or indoors This unit is for outdoor use Do not install the air conditioner or heat pump in the fol lowing locations a Where a mineral oil mist...

Page 4: ...ield wiring 18 9 1 Power circuit safety device and cable requirements 19 9 2 Wiring connection example for whole system 19 9 3 Leading wire procedure 19 9 4 Transmission wiring connection procedure 20...

Page 5: ...XYQ X units are as indicated in tables below where RXYQ 192 384 consists of multiple RXYQ 96 168 single mod ules as indicated 72 96 120 144 168 RXYQ72XBYC 1 RXYQ96XBYC 1 RXYQ120XBYC 1 RXYQ144XBYC 1 RX...

Page 6: ...00 1 3 2 Outdoor Unit Combinations Total capacity of indoor units needs to be within the specified range Capacity Range 6 ton 8 ton 10 ton 12 ton 14 ton 16 ton 18 ton RXYQ 72XBYC 96XBYC 120XBYC 144XBY...

Page 7: ...it Installation location is flat to prevent vibrations and noise generation and to have sufficient stability The space around the unit is adequate for maintenance and servic ing refer to 5 2 Service s...

Page 8: ...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 wind will disturb the operation of the unit If n...

Page 9: ...possibilities a b a c d a b a e d e c a b a e d f c a b a e b d c a b a e d f c 1 2 3 5 4 ABCD Sides along the installation site with obstacles Suction side A B C D A B 1 a 3 8 10 b 11 3 4 300 c 3 8 1...

Page 10: ...ering Data Book 6 Inspecting handling and unpacking the unit 6 1 Inspection At delivery the unit must be checked and any damage must be re ported immediately to the carrier s claims agent 6 2 Handling...

Page 11: ...ins 13 16 in 20 mm above the foundation surface A A 13 16 in 20 mm NOTE There are restrictions on the refrigerant pipe connecting order between outdoor units in the case of the multi system See 1 2 2...

Page 12: ...rk is complete do not under any circumstances open the stop valve until 9 Field wiring on page 18 and 12 Checking of device and installation conditions on page 24 are complete Do not use flux when bra...

Page 13: ...8 in 15 9 mm 3 8 in 9 5 mm 54 72 3 4 in 19 1 mm 72 111 7 8 in 22 2 mm 111 162 1 1 8 in 28 6 mm 1 2 in 12 7 mm 162 230 5 8 in 15 9 mm 230 300 1 3 8 in 34 9 mm 3 4 in 19 1 mm 300 1 5 8 in 41 3 mm Examp...

Page 14: ...KHRP26M72TUA 246 KHRP26M73TU9 KHRP26M73TUA Concerning REFNET headers choose from the following table in accordance with the total capacity of all the indoor units connected after the REFNET header Ind...

Page 15: ...1 1 a b c d e f g h i j k l m n p 3280 ft 1000 m Example 2 1 a b c d e f g h i j k l m n p 3280 ft 1000 m Example 1 2 a b c d e f g h i j k 3280 ft 1000 m Example 1 3 a b c d e f g h I 3280 ft 1000 m...

Page 16: ...pipe size of the main pipe then the pipe size of the main pipe has to be increased as well Increase the pipe size as follows f3 8 f1 2 f1 2 f5 8 f5 8 f3 4 f3 4 f7 8 f7 8 f1 3 f1 1 8 f1 1 4 3 f1 3 8 f...

Page 17: ...ffects valves and compressors in the refrigerating system and prevents proper operation The Dry Nitrogen pressure should be set to 2 9 psi 0 02 MPa i e just enough so it can be felt on the skin with a...

Page 18: ...Protective plate Stop valves mounting plate 5 Cut off the lower part of the smaller pinched piping with an ap propriate tool such as pipe cutters Let the remaining oil drip out in case the recovery wa...

Page 19: ...its multiple outdoor units system To connect the piping between outdoor units an optional multi connection piping kit BHFP22P100U BHFP22P100UA and BHF P22P151U BHFP22P151UA are always required When in...

Page 20: ...zontal plane Mount the REFNET header so that it branches horizontally 2 Installation of the multi connection piping kit 1 B 1 C D 15 15 A C 4 3 4 in 120 mm D 19 11 16 in 500 mm Install the joints hori...

Page 21: ...he service port cover 9 Field wiring NOTE All field wiring and components must be installed by a licensed elec trician and must comply with relevant local and national regulations Be sure to use a ded...

Page 22: ...0Hz f3 60Hz f3 60Hz f3 60Hz f3 60Hz f3 60Hz f3 60Hz f3 60Hz f3 60Hz 575V 575V 575V 575V 575V 575V 575V 575V 575V 575V 575V 575V 575V 575V 15 1 16 8 18 2 22 3 24 9 16 8 16 8 16 8 18 2 18 2 18 2 18 2 22...

Page 23: ...ng the printed circuit board A1P of Master unit NOTE Do not connect the power wiring to terminals for the transmission wiring Doing so would destroy the entire system Wiring to the indoor unit should...

Page 24: ...ating sleeves for con nections See the figure below Crimp style terminal Insulating sleeve Power wire For wiring use the designated power wire and connect firmly then secure to prevent outside pressur...

Page 25: ...Air tight test and vacuum drying After finished piping work carry out air tight test and vacuum drying NOTE Always use nitrogen gas for the air tightness test Absolutely do not open the stop valve unt...

Page 26: ...icrons vacuum break with nitrogen gas and evacuate the system again using the vacuum pump for 1 hour to 500 microns or less vacuum drying If the system cannot be evacuated to 500 microns within 2 hour...

Page 27: ...segment display s To access you can remove the service window cover see figure Now you can open the inspection door of the control box cover see figure You can see 3 push buttons and 3 seven segment d...

Page 28: ...to the system Result mode 1 setting 10 is addressed and selected return value is monitored information To leave the monitoring function push BS1 one time you will return to the default situation when...

Page 29: ...ctory charged with refrigerant and depending on pipe sizes and pipe lengths systems require additional charg ing of refrigerant See 14 2 Calculating the additional refrigerant charge In case recharge...

Page 30: ...BYC RXYQ120XBYC Indoor units FXMQ type 18 1 24 1 30 1 36 2 FXFQ type 36 2 Other 48 1 Liquid piping a f3 4 60 ft e f1 4 15 ft i f3 8 20 ft m f3 8 15 ft r f1 2 10 ft b f5 8 20 ft f f3 8 10 ft j f3 8 10...

Page 31: ...he refrigerant composition to change preventing normal operation Before charging check whether the refrigerant cylinder is equipped with a siphon tube or not If a siphon tube is equipped change the li...

Page 32: ...itional refrigerant 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 th...

Page 33: ...er adding the refrigerant do not forget to close the cover of the service port The tightening torque for the cover is 8 48 to 10 3 ft lbf 11 5 to 13 9 N m 15 Start up and configuration INFORMATION It...

Page 34: ...ethod is to enable low noise operation based on an external input For this operation an optional acces sory is required 1 2 shows the status of power consumption limitation operation 1 unit is current...

Page 35: ...xternal control adaptor DTA104A61 62 is installed Default value 0 To activate this function change 2 12 1 2 18 Fan high static pressure setting In order to increase the static pressure the outdoor uni...

Page 36: ...this setting activates and defines the level power consumption limitation that will be applied continuously The level is according to the table Default value 0 OFF Value 2 32 Restriction reference 0...

Page 37: ...refrigerant temperature target based on 2 9 is kept without any correction unless for protection control For more information and advice about the effect of these settings see 15 3 Energy saving and o...

Page 38: ...eit Celsius 0 5 2 8 C 1 10 default 5 6 C default 2 15 8 3 C 15 2 4 Heat pump lockout New control logic to provide more application options for cold climates Outside temperature can now be measured dir...

Page 39: ...omatically be set This will allow the auxiliary or secondary heat source to be automatically energized in the event of a system failure Error codes capable of auto backup are listed in the table below...

Page 40: ...ng for the customer The selection method of indoor units is important and has to be considered as the available capacity is not the same as under basic operation For details concerning to Hi sensible...

Page 41: ...m the indoor units becomes more moderate the system will eventually go to the steady state condition which is defined by the operation method above The start up condition is different from the powerfu...

Page 42: ...cal wiring air purge etc See installation manual of the indoor units for details CAUTION Do not insert fingers rods or other objects into the air inlet or outlet When the fan is rotating at high speed...

Page 43: ...ons and DIP switches on the printed circuit board on page 24 Push BS2 for 5 seconds or more The unit will start test operation The test operation is automatically carried out the outdoor unit display...

Page 44: ...Electronic expansion valve malfunction Y5E A7P X8A Check connection on printed circuit board or actuator 32 37 42 Electronic expansion valve malfunction Y7E A7P X11A Check connection on printed circui...

Page 45: ...07 09 11 Low pressure sensor malfunction short circuit S1NPL A1P X31A Check connection on printed circuit board or actuator LC 14 15 16 Transmission trouble A4P X6A A1P X28A Check connection 19 20 21...

Page 46: ...smission wired unit amount matches with powered unit amount by monitor mode or wait till initialization is finished UF 01 Auto address malfunction inconsistency Check if transmission wired unit amount...

Page 47: ...its and outdoor unit expansion valves will fully open At that moment the segment display indica tion 01 and the user interface of all indoor units indicate Test Operation and CENTRAL CONTROL and the o...

Page 48: ...ally in accordance with the length or diameter of the refrigerant piping Total amount of refrigerant lbs kg in the system NOTE Where a single refrigerant facility is divided into 2 entirely independen...

Page 49: ...3P734038 4 EM23A011 2311 SP Daikin Texas Technology Park 19001 Kermier Road Waller TX 77484 U S A 00_CV_3P734038 4 indd 2 00_CV_3P734038 4 indd 2 2023 05 29 17 12 28 2023 05 29 17 12 28...

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