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6-2 PROTECTION AGAINST CONTAMINATION WHEN INSTALLING PIPES

Protect the piping to prevent moisture, dirt, dust, etc. from entering the piping.

NOTE

Exercise special caution to prevent dirt or dust when passing piping through holes in walls and when passing 
pipe edges to the exterior.

6-3 PIPING CONNECTION WORK PRECAUTIONS

• When brazing refrigerant piping, begin working after replacing the nitrogen (*1) or perform brazing while 

nitrogen is flowing in the refrigerant piping (*2) (Refer to Fig. 5), and at the end made the indoor unit and 
BS unit flare or flange connections.
(*1) For details on nitrogen replacement, see the “VRV Installation Manual” (available at any Daikin 

dealer).

(*2) The pressure regulator for the nitrogen released when doing the brazing should be set to about 

0.02 MPa (0.2kg/cm

2

:Enough to feel a slight breeze on your cheek).

NOTES

• Do not use an anti-oxidizing agent when brazing the piping. Residual debris could clog the piping or cause 

parts to malfunction.

• Do not use a flux when brazing the refrigerant pipe joints.

Using a chlorine flux may cause the pipes to corrode, and if it contains fluoride it may cause the refrigerant 
lubricant to deteriorate, adversely affecting the refrigerant piping system.
Use phosphor copper brazing (BCuP-2: JIS Z 3264/B-Cu93P-710/795: ISO 3677) which does not require 
flux.

6-4 PIPING SIZE SELECTION

From Example of connection 1 and 2 below and Table 12, select the piping size between the outdoor unit 
(refrigerant branch kit) and BS unit, and between the BS unit and the indoor unit (refrigerant branch kit).

Example of connection 1: When 1 indoor unit is connected downstream from the BS unit

Place

Installation period

Protection method

Outdoor

More than a month

Pinch the pipe

Less than a month

Pinch or tape the pipe

Indoor

Regardless of the period

Refrigerant piping

Valve

Pressure-reducing valve

Part to be brazed

Taping

Nitrogen

Nitrogen

Fig. 5

To refrigerant branch 
kit or outdoor unit

*

Suction gas pipe

<Upstream>

<Downstream>

Gas pipe

Indoor unit

Liquid pipe

HP/LP gas pipe

Liquid pipe

Determine using Table 1 based 
on the total capacity of the indoor 
units connected downstream.

Select from Table 2 depending 
on the capacity type of the 
indoor unit.

BS

unit

Summary of Contents for VRV III BSVQ100P8V1B

Page 1: ...READ THESE INSTRUCTIONS CAREFULLY BEFORE INSTALLATION KEEP THIS MANUAL IN A HANDY PLACE FOR FUTURE REFERENCE INSTALLATION MANUAL BS unit BSVQ100P8V1B BSVQ160P8V1B BSVQ250P8V1B System air conditioner...

Page 2: ...enligt villkoren i 12 gitt i henhold til bestemmelsene i 13 noudattaen m r yksi 14 za dodr en ustanoven p edpisu 15 prema odredbama 16 k veti a z 17 zgodnie z postanowieniami Dyrektyw 18 n urma preve...

Page 3: ...life CAUTION Failure to observe these instructions properly may result in property damage or per sonal injury which may be serious depending on the circumstances WARNING Ask your dealer or qualified p...

Page 4: ...r Do not directly touch refrigerant that has leaked from refrigerant pipes or other areas as there is a danger of frostbite CAUTION Install the BS units power cord and connecting wires at least 1 mete...

Page 5: ...igned for R410A See the catalogue for indoor outdoor unit models that can be connected Normal operation is not possible when connecting units that are originally designed for other refrigerants 2 2 PR...

Page 6: ...icient clearance for maintenance and service can be ensured Refer to Fig 1 Locations where an inspection hole Refer to Fig 2 can be installed to EL COMPO BOX side See Note Where the total piping lengt...

Page 7: ...r the like Install the BS unit so that its weight can be withstood Hanging bracket For supporting the connection pipe Be sure to support the connection piping around the unit using hanging brackets th...

Page 8: ...0 3 pcs 4 locations and washers For M8 Outside diameter dimension 24 to 28mm For M10 Outside diameter 30 to 34mm 2 pcs 4 locations field supply from both the top and bottom sides of the hanging bracke...

Page 9: ...nstallation Make sure that nothing besides the specified refrigerant such as air gets into the refrigerant piping If refrigerant gas leaks during the work ventilate the area The outdoor units are fill...

Page 10: ...the refrigerant pipe joints Using a chlorine flux may cause the pipes to corrode and if it contains fluoride it may cause the refrigerant lubricant to deteriorate adversely affecting the refrigerant...

Page 11: ...door units Piping size outer diameter x minimum thickness Gas pipe Liquid pipe 20 25 32 40 50 12 7x0 80 6 4x0 80 63 80 100 125 15 9x0 99 9 5x0 80 200 19 1x0 80 250 22 2x0 80 mm BS unit Piping size out...

Page 12: ...uid pipe Site piping Gas pipe Site piping Liquid pipe Site piping BS unit Top Accessory pipes 1 2 Accessory pipes 1 1 Gas pipe Site piping Liquid pipe Site piping BS unit Top Suction gas pipe Site pip...

Page 13: ...ation field supply with the seams facing up See figure at right BSVQ100 160P type BSVQ250P type BS unit BS unit Clamp 2 2 Accessory Clamp 2 2 Accessory Insulation tube 3 2 Accessory Insulation tube 3...

Page 14: ...tion Do not turn on the power supply branch switches overload interrupters until all other work is done 7 2 EXAMPLE FOR THE WHOLE SYSTEM 7 3 POWER CIRCUIT SAFETY DEVICE AND CABLE REQUIREMENTS A power...

Page 15: ...the EL COMPO BOX lid and connect the wires to F1 and F2 TO IN D UNIT and F1 and F2 TO OUT D UNIT transmission wiring terminals control PCB A1P At this time pass the wiring into the unit through the w...

Page 16: ...the wire through hole to protect the wires Do not pass the transmission wiring and power supply wiring through the same locations and outside of the unit keep them separated by at least 50mm Not doing...

Page 17: ...er to the Engineering data book Setting method The setting is made using the Local Setting Mode by the remote controller of indoor unit connected to the BS unit For information regarding the setting m...

Page 18: ...MPO BOX NOTES PRINTED CIRCUIT BOARD DIP SWITCH FUSE T 3 15A 250V FLASHING LAMP SERVICE MONITOR GREEN SWITCHING POWER SUPPLY A1P TERMINAL STRIP POWER TERMINAL STRIP CONTROL TERMINAL STRIP C H SELECTOR...

Page 19: ...NOTES NOTES...

Page 20: ...4PW46241 1 Copyright Daikin...

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