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5

English

An inverter air conditioner may cause electronic noise generated from 
AM broadcasting. Examine where to install the main air conditioner 
and electric wires, keeping proper distances away from stereo equip-
ment, personal computers, etc. 
Particularly for locations with weak reception, ensure there is a dis-
tance of at least 10 ft. (3 m) for indoor remote controllers, place power 
wiring and transmission wiring in conduits, and ground the conduits.

• 

The refrigerant R410A itself is nontoxic, non-flammable and is safe. 

If the refrigerant should leak however, its concentration may exceed 
the allowable limit depending on room size. Due to this, it could be 
necessary to take measures against leakage. Refer to 18. Caution 

for refrigerant leaks on page 46.

•  Do not install in the following locations:

 

- Locations where sulfurous acids and other corrosive gases may 

be present in the atmosphere. Copper piping and soldered joints 
may corrode, causing refrigerant to leak.

 

- Locations where a mineral oil mist, spray or vapor may be pres-

ent in the atmosphere. Plastic parts may deteriorate and fall off or 
cause water leakage.

 

- Locations where equipment that produces electromagnetic 

waves is found. The electromagnetic waves may cause the con-
trol system to malfunction, preventing normal operation.

 

-

Locations where flammable gases may leak, where thinner, 

gasoline and other volatile substances are handled, or where 
carbon dust and other incendiary substances are found in the 
atmosphere. Leaked gas may accumulate around the unit, caus-
ing an explosion.

•  When installing, take strong winds, hurricanes or earthquakes into 

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 wind will disturb the operation of the 
unit. If necessary, use a screen to block the wind.

•  Ensure that water cannot cause any damage to the location by 

adding water drains to the foundation and prevent water traps in the 
construction.

•  When installing in areas where air contains high levels of salt such 

as near the ocean; Contact your Daikin sales representative for 
additional precautions.  

4.3.  Selecting a location in cold climates

 NOTE

•  When operating the unit in a low outdoor ambient temperature, be 

sure to follow the instructions described below.

•  The following images are for reference only. For more details con-

tact your local dealer.

To prevent exposure to wind and snow, install a baffle plates on the air 

side of the outdoor unit (see 

5.2. Service space

 for space requirement):

1

1

Baffle plates

In heavy snowfall areas it is very important to select an installation 
site where the snow will not affect the unit. Additionally, installation of 
a snow guard is recommended. When installing the unit in a location 
where there is heavy snowfall, remove the coil guards to prevent snow 

from accumulating on the fins.

If lateral snowfall is possible, make sure that the heat exchanger coil 
is not affected by the snow (if necessary construct a lateral canopy). 

Install the outdoor unit so that the bottom frame is at least 19-11/16 in. 

(500 mm) above predicted snowfall levels. 

1

2

1

Construct a large canopy.

2

Construct a pedestal.

 NOTE

When operating the unit in a low outdoor ambient temperature with 
high humidity conditions, make sure to take precautions to keep the 
drain holes of the unit free.

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2023/05/29   11:59:23

2023/05/29   11:59:23

Summary of Contents for RELQ72TBTJ Series

Page 1: ...the event of conflicting information 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...

Page 2: ...tion 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...

Page 3: ...ed either outdoors or indoors This unit is for indoor use Do not install the air conditioner or heat pump in the fol lowing locations a Where a mineral oil mist or oil spray or vapor is pro duced for...

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

Page 5: ...and right where RELQ 144 240 consists of multiple RELQ 72 120 single modules as indicated 72 96 120 RELQ72TBTJ TBYD TBYC 1 RELQ96TBTJ TBYD TBYC 1 RELQ120TBTJ TBYD TBYC 1 RELQ144TBTJ TBYD TBYC 2 RELQ1...

Page 6: ...TJ TBYD TBYC 168 312 NOTE Higher capacity than the above table can be selected this may affect heating and cooling capacity For additional information see technical engineering data 1 4 Scope of the m...

Page 7: ...he unit 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 Serv...

Page 8: ...lt 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 wind will disturb the operation of the unit...

Page 9: ...the 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...

Page 10: ...ngineering 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 Han...

Page 11: ...gth remains 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 Se...

Page 12: ...ng work is complete do not under any circumstances open the stop valve until 9 Field wiring on page 19 and 12 Checking of device and installation conditions on page 25 are complete Do not use flux whe...

Page 13: ...Branch Selector units C Choose from the following table in accordance with the indoor unit total capacity connected downstream Do not let the connection pip ing exceed the refrigerant piping size chos...

Page 14: ...P25M33H9 KHRP25M33HA KHRP26M22H9 KHRP26M22HA maximum 4 indoor units or KHRP26M33H9 KHRP26M33HA maximum 8 indoor units 72 111 KHRP26M33H9 KHRP26M33HA 111 230 KHRP25M72H9 KHRP25M72HA KHRP26M72H9 KHRP26M...

Page 15: ...m to the below length when calculating an equivalent length to each indoor unit connected to BSF Q54T Total capacity of the indoor units to be connected down stream Equivalent length BSF4Q54T BSF6Q54T...

Page 16: ...he figure below referring to the table below Do not upsize the high low pressure gas pipe and the suction gas pipe Outdoor unit capacity type Liquid pipe Main pipe Upsize the liquid pipe First refrige...

Page 17: ...pe and lines that are not upsized should not be doubled a b 2 c 2 d 2 e 2 f 2 g 2 h i j k l m n p q r s 1640 ft 500 m 3 The actual piping length from each indoor units to the nearest refriger ant bran...

Page 18: ...m ad versely affects 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 t...

Page 19: ...op valve Suction gas pipe stop value Protective plate Stop valves mounting plate High low pressure gas pipe stop valve 5 Cut off the lower part of the smaller pinched piping with an ap propriate tool...

Page 20: ...ller field piping 8 2 4 Precautions when connecting piping between outdoor units multiple outdoor units system To connect the piping between outdoor units an optional multi connection piping kit BHFP2...

Page 21: ...eader 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 horizontally so that the caution la...

Page 22: ...lve Check for refrigerant leaks after tightening the 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 l...

Page 23: ...RELQ96TBYD RELQ120TBYD RELQ144TBYD RELQ192TBYD RELQ240TBYD f3 60Hz f3 60Hz f3 60Hz f3 60Hz f3 60Hz f3 60Hz 460V 460V 460V 460V 460V 460V 28 1 39 8 43 4 28 1 28 1 39 8 39 8 43 4 43 4 35 45 50 35 35 45...

Page 24: ...ation work onsite settings and so on are done by operating the printed circuit board A1P of Master unit NOTE Do not connect the power wiring to terminals for the transmission wiring Doing so would des...

Page 25: ...ctions 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 pressure being exerted on the t...

Page 26: ...r the air tightness test Absolutely do not open the stop valve until the main power circuit insulation measurement has been completed Measuring after the stop valve is opened will cause the insulation...

Page 27: ...ns 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 hours re...

Page 28: ...ccess 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 displays and DIP switch...

Page 29: ...cted 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...

Page 30: ...refrigerant charge In case recharge is required refer to the nameplate of the unit It states the type of refrigerant and necessary amount 14 2 Calculating the additional refrigerant charge NOTE The re...

Page 31: ...2 Indoor units FXSQ type 12 2 FXMQ type 15 2 18 5 FXFQ type 36 2 Other 48 1 Liquid piping a f3 4 60 ft f f1 4 5 ft k f3 8 10 ft p f3 8 15 ft u f3 8 10 ft b f3 4 10 ft g f1 4 5 ft f3 8 10 ft q f1 4 10...

Page 32: ...it in gas form may cause the 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...

Page 33: ...valve C Make sure that all outdoor unit stop valves as well as valves A and C are closed 1 2 3 4 5 6 B 9 8 11 11 12 10 14 13 15 16 A C 7 1 Pressure reducing valve 2 Nitrogen 3 Measuring instrument 4...

Page 34: ...the refrigerant Operating with the stop valves closed will damage the compressor 15 Start up and configuration INFORMATION It is important that all information in this chapter is read sequentially by...

Page 35: ...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 currently operating under...

Page 36: ...nal external 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 outdoo...

Page 37: ...or is required to perform power consumption limitation If the system always needs to run under power consump tion limitation conditions this setting activates and defines the level power consumption l...

Page 38: ...lt 2 Quick 3 Powerful Change 2 81 0 1 2 or 3 in function of required limitation This setting is used in conjunction with setting 2 8 and 2 47 In the case of 2 81 0 the original refrigerant temperature...

Page 39: ...X Heater is not allowed to energize when the outdoor ambient temp is recovered by differential below above the AUX Heater Max Allowable Temp AUX Heater Max Allowable temp Release differential Fahrenhe...

Page 40: ...ary 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 Please be aware that the error codes that a...

Page 41: ...feeling 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 sens...

Page 42: ...t from 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 po...

Page 43: ...air purge etc See installation manual of the Branch Selector units and the indoor units for details CAUTION Do not insert fingers rods or other objects into the air inlet or outlet When the fan is ro...

Page 44: ...pressor 4 Make sure the default idle situation is existing see 13 2 Operat ing the push buttons and DIP switches on the printed circuit board on page 25 Push BS2 for 5 seconds or more The unit will st...

Page 45: ...it board or actuator 31 36 Electronic expansion valve malfunction 208 230 460V Y6E A6P X10A 575V Y6E A7P X10A Check connection on printed circuit board or actuator 32 37 Electronic expansion valve mal...

Page 46: ...function open circuit S1NPL A1P X31A Check connection on printed circuit board or actuator 07 09 Low pressure sensor malfunction short circuit S1NPL A1P X31A Check connection on printed circuit board...

Page 47: ...ring to the wiring diagram for Branch Selector units and correct if there are any errors Check that the DIP switches settings are correct referring to the installation manual enclosed in Branch Selec...

Page 48: ...s due to strong wind it may store electricity in the capacitor or in the main circuit and cause electric shock 5 After the service is finished plug the junction connector back in Otherwise the malfunc...

Page 49: ...event of major leak in the system and this in accordance to the local applicable regulations and standards Maximum concentration level The maximum charge of refrigerant and the calculation of the max...

Page 50: ...3P734038 2 EM23A007 2311 SP Daikin Texas Technology Park 19001 Kermier Road Waller TX 77484 U S A 00_CV_3P734038 2 indd 2 00_CV_3P734038 2 indd 2 2023 05 29 11 57 22 2023 05 29 11 57 22...

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