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3P477778-7G English

8 .  Precautions on refrigerant piping

• 

Do not allow anything other than the designated refrigerant to get 

mixed into the refrigerant cycle, such as air, nitrogen, etc. If any 

refrigerant gas leaks while working on the unit, ventilate the room 
thoroughly right away.

• 

Use R410A only when adding refrigerant.

• 

Installation tools:
Make sure to use installation tools (gauge manifold, charge hose, 

etc.) that are exclusively used for R410A installations to withstand 

the pressure and to prevent foreign materials (e.g., mineral oils and 

moisture) from mixing into the system.

• 

Vacuum pump:

 

- Use a 2-stage vacuum pump with a non-return valve.

 

-

Make sure the pump oil does not flow oppositely into the system 

while the pump is not working.

 

- Use a vacuum pump which can evacuate to 500 microns.

Protection against contamination when installing pipes

Take measures to prevent foreign materials like moisture and contami-

nation from mixing into the system.

Installation

Protection method

More than a month

Pinch the pipe

Less than a month

Pinch or tape pipe

Regardless of the period

Block all gaps in the holes for passing out piping and wiring using seal-

ing material (field supply) (the capacity of the unit will drop and small 

animals may enter the machine).

Example:

 passing piping out through the front.

1

1  Close the areas marked with 

(When the piping is routed from the 
front panel.) 

• 

Use clean pipes only.

• 

Hold the pipe end downwards when removing burrs.

• 

Cover the pipe end when inserting it through a wall so that no dust 
or dirt enters the pipe.

 NOTE

• 

After all the piping has been connected, make sure there is no gas 
leak. Use Dry Nitrogen to perform a gas leak detection.

• 

After knocking out the holes, we recommend you remove burrs in 
the knock holes and paint the edges and areas around the edges 
using the repair paint.

8 .1 .  Caution for brazing

• 

Make sure to blow through with Dry Nitrogen when brazing. Blowing 
through with Dry Nitrogen prevents the creation of large quantities 

of oxidized film on the inside of the piping. An oxidized film 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 the skin)) with a pressure-reducing 
valve.

1

2

3

4

5

6

6

1  Refrigerant piping
2  Part to be brazed
3  Taping
4  Hands valve
5  Pressure-reducing valve
6  Dry Nitrogen

Do not use anti-oxidants when brazing the pipe joints. Residue can 

clog pipes and break equipment:

•  Do not use flux when brazing copper-to-copper refrigerant piping. 

Use phosphor copper brazing filler alloy (BCuP) which does not 
require flux.

•  Flux has an extremely harmful influence on refrigerant piping 

systems. For instance, if chlorine based flux is used, it will cause 
pipe corrosion or, in particular, if the flux contains fluorine, it will 

deteriorate the refrigerant oil.

8 .2 .  Connecting the refrigerant piping

8 .2 .1 . 

Decide front or side (bottom) connection

Installation of refrigerant piping is possible as front connection or side con-

nection (when taken out from the bottom) as shown in the figure below.

1

2

3

1  Left-side connection
2  Front connection
3  Right-side connection

• 

For side connections, the knockout hole on the bottom plate should 
be removed:

3

2

1

1

4

1

Knockout hole (Piping)

2

Drill

3

Points for drilling

4

Knockout hole (Power supply 
wiring)

 NOTE

Precautions when knocking out knockout holes:

• 

Be sure to avoid damaging the casing.

• 

After knocking out the knockout holes, we recommend you remove 
the burrs and paint the edges and areas around the edges using 
repair paint to prevent rusting.

• 

When passing electrical wiring through the knock holes, protect the wir-
ing with a conduit or bushings, making sure not to damage the wiring.

8 .2 .2 .  Remove the pinched pipes

 WARNING

Any gas or oil remaining inside the stop valve may blow off the pinched 
piping.
Failure to observe the instructions in procedure below properly may 
result in property damage or personal injury, which may be serious 
depending on the circumstances.

01_EN_3P477778-7G.indb   14

1/15/2019   10:58:06

Содержание REYQ120XATJU

Страница 1: ...12XAYCU REYQ336XAYCU REYQ360XAYCU REYQ384XAYCU REYQ408XAYCU REYQ432XAYCU VRV System air conditioner Please visit http www daikinac com content resources manuals for the most current version of install...

Страница 2: ...sonnel 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 instal...

Страница 3: ...only Outdoor units can be installed 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 oi...

Страница 4: ...size and allowable pipe length 9 7 1 General information 9 7 2 Selection of piping material 9 7 3 Selection of piping size 9 7 4 Selection of refrigerant branch kits 10 7 5 System piping length limita...

Страница 5: ...REYQ120XATJU XAYDU XAYCU 1 REYQ144XATJU XAYDU XAYCU 1 REYQ168XATJU XAYDU XAYCU 1 REYQ192XATJU XAYDU XAYCU 2 REYQ216XATJU XAYDU XAYCU 1 1 REYQ240XATJU XAYDU XAYCU 2 REYQ264XATJU XAYDU XAYCU 1 1 REYQ288...

Страница 6: ...343 REYQ288XATJU XAYDU XAYCU 144 374 REYQ312XATJU XAYDU XAYCU 156 405 REYQ336XATJU XAYDU XAYCU 168 436 REYQ360XATJU XAYDU XAYCU 180 468 REYQ384XATJU XAYDU XAYCU 192 499 REYQ408XATJU XAYDU XAYCU 204 53...

Страница 7: ...he weight of the 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 ref...

Страница 8: ...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 di...

Страница 9: ...elow and choose one of 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...

Страница 10: ...ons can be found in the Engineering 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 carri...

Страница 11: ...a tion bolts until their length 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...

Страница 12: ...d installation conditions on page 24 are complete Do not use flux when brazing the refrigerant piping Use the phos phor copper brazing filler metal B Cu93P 710 795 ISO 3677 which does not require flux...

Страница 13: ...6 4 mm 24 30 36 42 48 54 5 8 in 15 9 mm 3 8 in 9 5 mm 72 3 4 in 19 1 mm 96 7 8 in 22 2 mm 7 4 Selection of refrigerant branch kits For piping example refer to 7 3 Selection of piping size on page 9 W...

Страница 14: ...tally paying attention to the installation restrictions indicated in 8 Precautions on refrigerant piping on page 14 Example of connection Outdoor unit side Indoor unit side Branch Selector unit 1 2 1...

Страница 15: ...nits H3 16 ft 5 m Allowable length after branch 5 Actual piping length Actual piping length from the first REFNET joint or REFNET header to indoor unit 130 ft 40 m 8 Example 4 d g i 130 ft 40 m 7 b c...

Страница 16: ...j k B1 B2 B3 B4 B5 B6 B7 2 s r q Branch Selector units B1 B7 b c d e f g p 130 ft 40 m From outdoor unit to the farthest indoor unit 9 From outdoor unit to the nearest indoor unit 1 2 The total pipin...

Страница 17: ...revents the creation of large quantities of oxidized film on the inside of the piping An oxidized film ad versely affects valves and compressors in the refrigerating system and prevents proper operati...

Страница 18: ...quid pipe stop 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 pro...

Страница 19: ...ts are the responsibility of the installer field piping 8 2 4 Precautions when connecting piping between outdoor units multiple outdoor units system To connect the piping between outdoor units an opti...

Страница 20: ...T header so that it branches horizontally 2 Installation of the multi connection piping kit A 1 B 1 C D 15 C 4 3 4 in 120 mm D 19 11 16 in 500 mm Install the joints horizontally so that the caution la...

Страница 21: ...to 8 3 2 How to use the stop valve 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...

Страница 22: ...AYDU f3 60Hz f3 60Hz f3 60Hz f3 60Hz f3 60Hz f3 60Hz f3 60Hz f3 60Hz f3 60Hz f3 60Hz f3 60Hz f3 60Hz f3 60Hz f3 60Hz f3 60Hz f3 60Hz f3 60Hz 460V 460V 460V 460V 460V 460V 460V 460V 460V 460V 460V 460V...

Страница 23: ...ck operation in installation 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 wi...

Страница 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...

Страница 25: ...r tight test and vacuum drying NOTE Always use nitrogen gas for the air tightness test Absolutely do not open the stop valve until the main power circuit insulation measurement has been completed Meas...

Страница 26: ...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 repeat the operation of vacuum break and vacuum dryin...

Страница 27: ...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 displays and DIP switc...

Страница 28: ...of indoor units which are con nected 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...

Страница 29: ...rant 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 refrigera...

Страница 30: ...units BS4Q54T 1 BSQ60T 1 BSQ96T 1 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...

Страница 31: ...te Since this refrigerant is a mixed refrigerant adding it in gas form may cause the refrigerant composition to change preventing normal operation Before charging check whether the refrigerant cylinde...

Страница 32: ...ank only to the liquid stop valve service port open valve A Make sure that all outdoor unit stop valves as well as valves B and C are closed 1 2 3 4 5 6 A C B 9 8 10 10 11 13 12 14 15 7 1 Gauge manifo...

Страница 33: ...stop valves after pre charging 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 c...

Страница 34: ...The second method 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 uni...

Страница 35: ...only be effective when the optional 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 increas...

Страница 36: ...l signal is sent to the unit this setting defines the level power consumption limitation that will be applied for step 2 The level is according to the table Default value 1 Change 2 31 1 2 or 3 in fun...

Страница 37: ...t 50 m the setting 2 49 has to be changed to 1 Other changes limitations to the circuit apply for more information see 7 5 System piping length limitations on page 11 2 62 Cooling and heating capacity...

Страница 38: ...ble temp release differential AUX 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 te...

Страница 39: ...ll automatically 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...

Страница 40: ...nsible mode is comfort 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 detail...

Страница 41: ...n the situ ation When the request 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 co...

Страница 42: ...d field piping electrical wiring 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 in...

Страница 43: ...ult idle situation is existing see 13 2 Operat ing the push buttons 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...

Страница 44: ...n valve malfunction Y6E A7P X10A Check connection on printed circuit board or actuator 32 37 Electronic expansion valve malfunction Y7E A7P X11A Check connection on printed circuit board or actuator F...

Страница 45: ...heck connection on printed circuit board or actuator JC 06 08 Low pressure sensor malfunction open circuit S1NPL A1P X31A Check connection on printed circuit board or actuator 07 09 Low pressure senso...

Страница 46: ...ng connection are correct refer 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...

Страница 47: ...oor unit before starting service operation on the inverter equipment Be careful not to touch the live parts If a fan rotates due to strong wind it may store electricity in the capacitor or in the main...

Страница 48: ...is not exceeded in the unlikely 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...

Страница 49: ...3P477778 7G EM18A015 1901 HT 00_CV_3P477778 7G indd 2 12 11 2018 4 33 48 PM...

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