Daikin VRV 5 BS4A14AJV1B Manual
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Daikin VRV 5 BS4A14AJV1B Manual

Daikin VRV 5 BS4A14AJV1B Manual

Branch selector unit
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BS4A14AJV1B
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Installer and user reference guide
VRV 5 branch selector unit

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  • Page 1 Installer and user reference guide VRV 5 branch selector unit BS4A14AJV1B BS6A14AJV1B BS8A14AJV1B BS10A14AJV1B BS12A14AJV1B...
  • Page 2 The original documentation is written in English. All other languages are translations. Technical engineering data ▪ A subset of the latest technical data is available on the regional Daikin website (publicly accessible). ▪ The full set of latest technical data is available on the Daikin Business Portal (authentication required).
  • Page 3 About this document DANGER: RISK OF ELECTROCUTION Indicates a situation that could result in electrocution. DANGER: RISK OF BURNING/SCALDING Indicates a situation that could result in burning/scalding because of extreme hot or cold temperatures. DANGER: RISK OF EXPLOSION Indicates a situation that could result in explosion. WARNING Indicates a situation that could result in death or serious injury.
  • Page 4 Improper installation or attachment of equipment or accessories could result in electrical shock, short-circuit, leaks, fire or other damage to the equipment. ONLY use accessories, optional equipment and spare parts made or approved by Daikin. WARNING Make sure installation, testing and applied materials comply with applicable legislation (on top of the instructions described in the Daikin documentation).
  • Page 5 General safety precautions If you are NOT sure how to install or operate the unit, contact your dealer. In accordance with the applicable legislation, it might be necessary to provide a logbook with the product containing at least: information on maintenance, repair work, results of tests, stand-by periods,…...
  • Page 6 General safety precautions WARNING Take sufficient precautions in case of refrigerant leakage. If refrigerant gas leaks, ventilate the area immediately. Possible risks: ▪ Excessive refrigerant concentrations in a closed room can lead to oxygen deficiency. ▪ Toxic gas might be produced if refrigerant gas comes into contact with fire. WARNING ALWAYS recover the refrigerant.
  • Page 7 General safety precautions Then A siphon tube is NOT present Charge with the cylinder upside down. ▪ Open refrigerant cylinders slowly. ▪ Charge the refrigerant in liquid form. Adding it in gas form may prevent normal operation. CAUTION When the refrigerant charging procedure is done or when pausing, close the valve of the refrigerant tank immediately.
  • Page 8 General safety precautions WARNING ▪ ONLY use copper wires. ▪ Make sure the field wiring complies with the applicable legislation. ▪ All field wiring MUST be performed in accordance with the wiring diagram supplied with the product. ▪ NEVER squeeze bundled cables and make sure they do NOT come in contact with the piping and sharp edges.
  • Page 9 General safety precautions Install power cables at least 1  meter away from televisions or radios to prevent interference. Depending on the radio waves, a distance of 1  meter may NOT be sufficient. NOTICE ONLY applicable if the power supply is three‑phase, and the compressor has an ON/ OFF starting method.
  • Page 10 Specific installer safety instructions 3 Specific installer safety instructions Always observe the following safety instructions and regulations. Unit installation (see "14 Unit installation" [  55]) DANGER: RISK OF ELECTROCUTION DANGER: RISK OF ELECTROCUTION Do NOT leave the unit unattended when the service cover is removed. WARNING In case the safety measures require a ventilated enclosure, respect the following: ▪...
  • Page 11 Specific installer safety instructions "15 Piping installation" [  73]) Refrigerant piping installation (see DANGER: RISK OF BURNING/SCALDING WARNING The field piping method MUST be in accordance with the instructions from this manual. See "15 Piping installation" [  73]. WARNING Take sufficient precautions in case of refrigerant leakage. If refrigerant gas leaks, ventilate the area immediately.
  • Page 12 Specific installer safety instructions DANGER: RISK OF ELECTROCUTION Before performing work on the unit, disconnect any power source connected to the unit. WARNING If the supply cord is damaged, it MUST be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.
  • Page 13 Specific installer safety instructions Commissioning (see "18 Commissioning" [  100]) CAUTION Do NOT perform the test operation while working on the indoor units. When performing the test operation, NOT ONLY the outdoor unit, but the connected indoor unit will operate as well. Working on an indoor unit while performing a test operation is dangerous.
  • Page 14  40]. WARNING Make sure installation, servicing, maintenance and repair comply with instructions from Daikin and with applicable legislation and are executed ONLY by authorised persons. CAUTION Do NOT use potential sources of ignition in searching for or detection of refrigerant leaks.
  • Page 15 For the user BS4~12A14AJV1B Installer and user reference guide VRV 5 branch selector unit 4P695527-1 – 2022.02...
  • Page 16 User safety instructions 4 User safety instructions Always observe the following safety instructions and regulations. In this chapter General....................................Instructions for safe operation............................... 4.1 General WARNING If you are NOT sure how to operate the unit, contact your installer. WARNING This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if...
  • Page 17 User safety instructions ▪ Units are marked with the following symbol: This means that electrical and electronic products may NOT be mixed with unsorted household waste. Do NOT try to dismantle the system yourself: dismantling the system, treatment of the refrigerant, of oil and of other parts MUST be done by an authorised installer and MUST comply with applicable legislation.
  • Page 18 User safety instructions WARNING This unit contains electrical and hot parts. WARNING Before operating the unit, be sure the installation has been carried out correctly by an installer. WARNING Do NOT obstruct the opening of the air inlet (damper). WARNING The unit is equipped with a refrigerant leak detection system for safety.
  • Page 19 User safety instructions CAUTION Do NOT insert fingers, rods or other objects into the air inlet (damper). CAUTION Before accessing terminal devices, make sure to interrupt all power supply. About the refrigerant (see "7.3 About the refrigerant" [  23]) WARNING: MILDLY FLAMMABLE MATERIAL The refrigerant inside this unit is mildly flammable.
  • Page 20 WARNING Make sure installation, servicing, maintenance, repair and applied materials follow the instructions from Daikin and, in addition, comply with applicable legislation and are performed by qualified persons only. In Europe and areas where IEC standards apply, EN/IEC 60335-2-40 is the applicable standard.
  • Page 21 About the system 5 About the system WARNING ▪ Do NOT modify, disassemble, remove, reinstall or repair the unit yourself as incorrect dismantling or installation may cause an electrical shock or fire. Contact your dealer. ▪ In case of accidental refrigerant leaks, make sure there are no naked flames. The refrigerant itself is entirely safe, non-toxic and mildly flammable, but it will generate toxic gas when it accidentally leaks into a room where combustible air from fan heaters, gas cookers, etc.
  • Page 22 Before operation 6 Before operation CAUTION "4 User safety instructions" [  16] to acknowledge all related safety instructions. NOTICE NEVER inspect or service the unit by yourself. Ask a qualified service person to perform this work. NOTICE Turn ON the power 6 hours before operation in order to have power running to the crankcase heater and to protect the compressor.
  • Page 23 Maintenance and service 7 Maintenance and service In this chapter Precautions for maintenance and service..........................Periodic check of the ventilated enclosure..........................About the refrigerant ................................7.3.1 About the refrigerant leakage sensor........................7.1 Precautions for maintenance and service CAUTION "4 User safety instructions" [  16] to acknowledge all related safety instructions.
  • Page 24 Maintenance and service Periodical inspections for refrigerant leaks may be required depending on the applicable legislation. Contact your installer for more information. NOTICE Applicable legislation on fluorinated greenhouse gases requires that the refrigerant charge of the unit is indicated both in weight and CO equivalent.
  • Page 25 Troubleshooting 8 Troubleshooting If one of the following malfunctions occur, take the measures shown below and contact your dealer. WARNING In case of a refrigerant leak, the system needs power to contain the problem. 1. Do NOT turn OFF the power supply. 2.
  • Page 26 Troubleshooting 8.1.1 Symptom: noise ▪ A "zeen" sound is heard immediately after the power supply is turned on. The electronic expansion valve inside the BS unit starts working and makes the noise. Its volume will reduce in about a minute. ▪...
  • Page 27 Relocation 9 Relocation Contact your dealer to remove and reinstall the entire unit. Moving units requires technical expertise. BS4~12A14AJV1B Installer and user reference guide VRV 5 branch selector unit 4P695527-1 – 2022.02...
  • Page 28 Disposal 10 Disposal This unit uses hydrofluorocarbon. Contact your dealer when discarding this unit. It is required by law to collect, transport and discard the refrigerant in accordance with the "hydrofluorocarbon collection and destruction" regulations. NOTICE Do NOT try to dismantle the system yourself: dismantling of the system, treatment of the refrigerant, oil and other parts MUST comply with applicable legislation.
  • Page 29 For the installer BS4~12A14AJV1B Installer and user reference guide VRV 5 branch selector unit 4P695527-1 – 2022.02...
  • Page 30 About the box 11 About the box Keep the following in mind: ▪ At delivery, the unit MUST be checked for damage and completeness. Any damage or missing parts MUST be reported immediately to the claims agent of the carrier. ▪...
  • Page 31 About the box ▪ Lift the unit via the cut-outs in the cardboard. For the BS10~12A units, it is advised to lift with more than 2 people. ▪ When moving the unit, carry it slowly. ▪ After unpacking, lift the unit via the hanger brackets. Do not exert any pressure on other parts, especially not on the refrigerant piping and drain piping.
  • Page 32 About the box 11.2 To unpack the unit For BS4A 1 Cut and remove the straps. 2 Remove the box parts as indicated in the picture. BS4~12A14AJV1B Installer and user reference guide VRV 5 branch selector unit 4P695527-1 – 2022.02...
  • Page 33 About the box For BS6~12A 3 Cut and remove the inner straps. BS4~12A14AJV1B Installer and user reference guide VRV 5 branch selector unit 4P695527-1 – 2022.02...
  • Page 34 About the box 4 Remove the pallet. 5 Cut and remove the outer straps. 6 Remove the box parts as indicated in the picture. BS4~12A14AJV1B Installer and user reference guide VRV 5 branch selector unit 4P695527-1 – 2022.02...
  • Page 35 About the box BS4~12A14AJV1B Installer and user reference guide VRV 5 branch selector unit 4P695527-1 – 2022.02...
  • Page 36 About the box 11.3 To remove the accessories 3/1x 4/2x 8/11x 3/1x 4/2x a Installation and operation manual b General safety precautions c Drain hose d Metal clamp e Sealing material (large) f Sealing material (small) g Sealing material (thin sheet) h Insulation tube for stopper pipe Ø9.5 mm (3×...
  • Page 37 About the unit and options 12 About the unit and options In this chapter 12.1 Identification................................... 12.1.1 Identification label: BS unit ............................ 12.2 About the operation range..............................12.3 System layout..................................12.4 Combining units and options..............................12.4.1 Possible options for the BS unit ..........................12.1 Identification NOTICE When installing or servicing several units at the same time, make sure NOT to switch...
  • Page 38 About the unit and options a Heat recovery outdoor unit b Branch selector (BS) c VRV direct expansion (DX) indoor unit d Remote controller in normal mode e Remote controller in alarm only mode f Remote controller in supervisor mode (mandatory in some situations) g iTM (optional) h Option PCB (optional) Refrigerant piping...
  • Page 39 About the unit and options BS4~12A BS10~12A BS6~12A BS4~12A X15A X3/4M X3/4/5M a Power supply for the BS unit b Transmission wiring c Cable tie d Power supply of the drain up kit e Relay harness of the drain up kit f Relay connector of the drain up kit g Ferrite core BS4~12A14AJV1B...

  • Page 40: Table Of Contents

    Special requirements for R32 units 13 Special requirements for R32 units In this chapter 13.1 Installation space requirements............................. 13.2 System layout requirements ..............................13.3 To determine the required safety measures ......................... 13.4 Safety measures..................................13.4.1 No safety measure ..............................13.4.2 External alarm ................................

  • Page 41: To Determine The Required Safety Measures

    Special requirements for R32 units BS unit installation Depending on the room size in which the BS unit is installed and the total amount of refrigerant in the system, other safety measures are necessary. See "13.3  To determine the required safety measures" ...
  • Page 42 Special requirements for R32 units ≥ 20 mm ≥ 20 mm nvmin ≥ 50% A nvmin ≤ 100 mm Minimal natural ventilation area nvmin For the lower opening: It is not an opening to the outside The opening cannot be closed The opening must be ≥0.012 m²...
  • Page 43 Special requirements for R32 units All other floors Lowest underground floor No safety measure No safety measure External alarm Ventilated enclosure Ventilated enclosure m [kg] m [kg] [m²] [m²] Lowest under- Lowest under- m [kg] All other floors m [kg] All other floors ground floor ground floor...
  • Page 44 Special requirements for R32 units (c) No safety measure (=No safety measure) (d) External alarm (=External alarm) (e) Ventilated enclosure (=Ventilated enclosure) Use the total amount of refrigerant in the system and the area of the room in which the BS unit is installed to check which safety measure is required. Note: Above a system charge of 42.2 ...

  • Page 45: Safety Measures

    Special requirements for R32 units BS unit Room area Required safety measure A=125 m²≥118 m² No safety measures A=70 m²≥59 m² External alarm A=15 m²<59 m² Ventilated enclosure No safety measure External alarm Ventilated enclosure m [kg] m Total refrigerant charge in the system [kg] Minimum room area [m²] (a) All other floors (=All other floors) (b) Lowest underground floor (=Lowest underground floor) (c) No safety measure (=No safety measure)

  • Page 46: Ventilated Enclosure

    Special requirements for R32 units For the external alarm safety measure, the duct connection must be replaced with the duct closing plate accessory (see "14.5.2  To install the duct closing plate" [  66]). An external alarm circuit (field supply) must be connected to the SVS output of the BS unit, see "16.5 To connect the external outputs" [...
  • Page 47 Special requirements for R32 units Note: As an additional safety measure, an external alarm circuit (field supply) can be installed using the SVS output. See "16.5  To connect the external outputs" [  88]. When the R32 sensor in the BS unit detects a refrigerant leak, it activates the safety measures.
  • Page 48 Special requirements for R32 units An extraction fan must be connected to the BS unit, see "16.5  To connect the external outputs" [  88]. In order to size the fan, calculate the required pressure capacity. The total pressure drop in the evacuation channel consists of multiple parts: the pressure drop generated by the BS unit and the pressure drop generated by the components of the ductwork.
  • Page 49 Special requirements for R32 units pressure inside the BS unit is within the range of 20~350 Pa below the pressure of the surroundings. We use this 115 m³/h airflow rate for further calculations. - 42.9 -100 -150 -200 -250 -300 [m³/h] Note: These curves present the internal pressure of the BS unit compared to an ambient pressure of 101325 Pa.
  • Page 50 Special requirements for R32 units Select a fan with the required flow of 115  m³/h and a total pressure rise of 123.5 Pa. Note: For ease of installation, we recommend to use in-line duct fans. BS unit test run Before BS unit operation, it is required to perform a test run that simulates a refrigerant leak.
  • Page 51 Special requirements for R32 units c Extraction fan output terminal – NOT connected d Extraction fan output terminal – connected e Transmission wiring terminal f Extraction fan A Outdoor unit A B Outdoor unit B Transmission wiring Extraction fan output wiring An online tool (VRV Xpress) is available to find the required pressure capacity for...

  • Page 52: Combinations Of Ventilated Enclosure Configurations

    Special requirements for R32 units a BS unit belonging to outdoor unit A b BS unit belonging to outdoor unit B c Extraction fan output terminal – NOT connected d Extraction fan output terminal – connected e Transmission wiring terminal f Extraction fan A Outdoor unit A B Outdoor unit B...

  • Page 53: Combinations Of Safety Measures

    Special requirements for R32 units Example a Outdoor unit b BS unit belonging to cluster 1 c BS unit belonging to cluster 2 d BS unit belonging to cluster 3 e Extraction fan Transmission wiring Field settings Code Description Value Cluster [2-0] Cluster indication 1: enable [2-1] Cluster number...
  • Page 54 Special requirements for R32 units Example a Outdoor unit b BS unit with ventilated enclosure safety measure c BS unit without safety measures d BS unit with external alarm safety measure e Extraction fan f External alarm Transmission wiring Field settings BS units (b) with ventilated enclosure safety measure Code Description...

  • Page 55: Preparing The Installation Site

    Unit installation 14 Unit installation WARNING The installation MUST comply with the requirements that apply to this R32 equipment. For more information, see "13 Special requirements for R32 units" [  40]. In this chapter 14.1 Preparing the installation site ..............................14.1.1 Installation site requirements of the unit......................14.2 Possible configurations................................
  • Page 56 Unit installation NOTICE The installation and any maintenance requires a professional with relevant EMC experience to install any specific EMC mitigation measures defined in the user instructions. NOTICE The equipment described in this manual may cause electronic noise generated from radio-frequency energy.
  • Page 57 Unit installation ▪ In places where voltage fluctuates a lot. ▪ Water leakage. Take care that in the event of a water leak, water CANNOT cause any damage to the installation space and its surroundings. ▪ Noise. Choose a location where the operation noise of the unit does not disturb the room occupants.
  • Page 58 Unit installation d ≥ 500 c ≥ 485 c ≥ 485 b ≥ 720 [mm] ≥5 (≥49.5) ≥100 A≥1800 f: 875 f: 450 [mm] A Minimum distance to the floor a Switch box b Maintenance space c Minimum connection space for refrigerant piping coming from the outdoor unit, or for piping coming from or going to another BS unit, drain piping and ducting d Minimum connection space for the refrigerant piping to the indoor units e False ceiling...

  • Page 59: Possible Configurations

    Unit installation [mm] A Ceiling opening size: 800 mm (BS4A) 1200 mm (BS6~8A) 1600 mm (BS10~12A) 14.2 Possible configurations Refrigerant piping A Refrigerant piping connected to left side only B Refrigerant piping connected to right side only C Refrigerant piping connected to both sides (flow-through) 1 From outdoor or from BS unit 2 From outdoor or from/to BS unit a Stopper pipes (accessory)
  • Page 60 Unit installation Ducting A’ B’ A Default flow. Only ducting on the air outlet side. (Default configuration) A' Default flow. Ducting on both sides. B Reversed flow. Only ducting on the air outlet side. B' Reversed flow. Ducting on both sides. C No extraction ventilation installed 1 To extraction fan or another BS unit 2 From another BS unit...

  • Page 61: Opening And Closing The Unit

    Unit installation 14.3 Opening and closing the unit 14.3.1 To open the unit 3× DANGER: RISK OF ELECTROCUTION Do NOT leave the unit unattended when the service cover is removed. 14.3.2 To close the unit 3× ≤ 3.2 N·m 14.4 Mounting the unit 14.4.1 To mount the unit INFORMATION Optional equipment.
  • Page 62 Unit installation a Suspension bolt pitch (length): 513 mm b Suspension bolt pitch (width): 630 mm (BS4A) 1030 mm (BS6~8A) 1430 mm (BS10~12A) 2 Install a nut, 2 washers and a double nut onto each suspension bolt. Leave enough space for maneuvering with the unit between the nut and double nut. 3 Position the unit by hooking the hanger brackets of the unit around the suspension bolts, in between the 2 washers.

  • Page 63: To Connect The Drain Piping

    Unit installation a Level b Water-filled vinyl tube ≤ 1° ≤ 1° a Drain socket b Switch box 14.4.2 To connect the drain piping NOTICE Incorrect connection of the drain hose might cause leaks, and damage the installation space and surroundings. 1 Push the drain hose as far as possible over the drain pipe connection.

  • Page 64: To Install The Drain Piping

    Unit installation c Metal clamp (accessory) 4 Check if the water drains correctly. ▪ Open the inspection hole by removing the inspection hole cover. 2× ≤ 3.2 N·m ▪ Gradually add water through the inspection hole. ▪ Verify that the water flows through the drain hose and check for water leaks. ▪...

  • Page 65: Installing The Ventilation Ducting

    Unit installation a Hanging bar Allowed Not allowed 2 Provide a downwards slope (at least 1/100) to prevent air from being trapped in the piping. If unable to provide an adequate slope for the drain, use the drain up kit (K-KDU303KVE). 3 Insulate the complete drain piping in the building to prevent condensation.

  • Page 66: To Install The Duct Closing Plate

    Unit installation ▪ Insulate at least the first meter of ducting against thermal losses with glass wool or polyethylene foam (field supply) with a minimum thickness according to the expected ambient conditions. See "15.2  Preparing refrigerant piping" [  74]. ▪ If both sides of the unit have ducting, insulate both sides. ▪...

  • Page 67: To Switch The Air In- And Outlet Side

    Unit installation 4× ≤ 3.2 N·m 14.5.3 To switch the air in- and outlet side To lower the switch box 1 Open the BS unit. See "14.3.1 To open the unit" [  61]. 2 Remove the 4 screws. 3 Store the screws in a safe place. 4 Loosen the M8 bolts 2 turns without removing them.
  • Page 68 Unit installation 2× 2 Loosen the damper wires. 1× a Connector b Earth wire screw c Damper earth wire ▪ Unplug the damper wire from the intermediate connector. ▪ Loosen and remove the damper earth wire screw and detach the damper earth wire.
  • Page 69 Unit installation 4× τ ≤ 3.2 N•m a Screw b Damper c Damper wire To remove the duct connection 1 Remove the 4 screws. 2 Store the screws in a safe place. 3 Pull the duct connection from the unit. 4×...
  • Page 70 Unit installation To install the damper 1 Install the damper on the other side of the unit. ▪ Carefully guide the wires from the outside to the inside through the small hole in the unit's metal plate. Take care not to damage the connector and the earth wire connection.
  • Page 71 Unit installation a Wire fixing plate b Old insulation c New insulation (accessory) ▪ Position the wires as far down as possible in the opening on top of which the wire fixing plate will be installed. ▪ Position the wire fixing plate over the screws and slide it in place. Make sure the backside is aligned properly with the insulation of the switch box, in order to make it airtight.
  • Page 72 Unit installation BS6~12A a Damper wire b Tie wrap to fix damper wire to piping (field supply) c Tie wrap to bundle the damper wire (field supply) d Leftmost wire fixing plate To re-install the switch box 1 Lift the switch box, slide it backwards and lower it a short distance. 2 Install and tighten the 4 screws.

  • Page 73: Installation Limitations

    Piping installation 15 Piping installation CAUTION "3  Specific installer safety instructions"  [   10] to make sure this installation complies with all safety regulations. In this chapter 15.1 Installation limitations ................................15.2 Preparing refrigerant piping ..............................15.2.1 Refrigerant piping requirements ........................... 15.2.2 Refrigerant piping material ............................

  • Page 74: Preparing Refrigerant Piping

    Piping installation Description Model BS4A BS6A BS8A BS10A BS12A Maximum number of connectable indoor units per BS unit (a) Maximum number of connectable indoor units per BS unit branch (b) Maximum capacity index of connectable indoor units per BS unit Maximum capacity index of connectable indoor units per branch Maximum capacity index of...

  • Page 75: Refrigerant Piping Insulation

    Piping installation Outer diameter (Ø) Temper grade Thickness (t)FN Ø 6.4 mm (1/4") Annealed (O) ≥0.80 mm 9.5 mm (3/8") 12.7 mm (1/2") 15.9 mm (5/8") Annealed (O) ≥0.99 mm 19.1 mm (3/4") Half hard (1/2H) ≥0.80 mm 22.2 mm (7/8") 28.6 mm (1 1/8") Half hard (1/2H) ≥0.99 mm 15.2.3 Refrigerant piping insulation ▪...

  • Page 76: To Braze The Pipe End

    Piping installation WARNING Bent header or branch pipes can lead to refrigerant leakage. Possible consequence: asphyxiation, suffocation and fire. ▪ NEVER bend the branch and header pipes sticking out of the unit. They have to remain straight. ▪ ALWAYS support the branch and header pipes at a distance of 1 m from the unit. Prerequisite: Mount the indoor, outdoor and BS units.

  • Page 77: Joining Branch Pipe Ports

    Piping installation NOTICE Precautions when connecting field piping. Add brazing material as shown in the figure. ≤Ø25.4 >Ø25.4 ▪ When brazing, blow through with nitrogen to prevent creation of large quantities of oxidised film on the inside of the piping. This film adversely affects valves and compressors in the refrigerating system and prevents proper operation.

  • Page 78: To Insulate The Refrigerant Piping

    Piping installation Note: When using the joint kit, change the DIP switch settings. See "16.4 To set the switches" [  87]. 15.4 To insulate the refrigerant piping To insulate stopper pipes In case of stopper pipes: install stopper pipe insulation tubes (accessory). Adding additional insulation might be required depending on the ambient conditions.
  • Page 79 Piping installation an extra insulation tube must be installed over the insulation tube coming out of the unit. Always use tape (field supply) to prevent air gaps in the seam between the insulation tubes. a Insulation tube (extra thick)(field supply) b Tape (field supply) c Insulation tube (BS unit) d Adherence surface...
  • Page 80 Electrical installation 16 Electrical installation CAUTION "3  Specific installer safety instructions"  [   10] to make sure this installation complies with all safety regulations. In this chapter 16.1 About connecting the electrical wiring ..........................16.1.1 Precautions when connecting the electrical wiring ....................16.1.2 Specifications of standard wiring components .....................
  • Page 81 Electrical installation WARNING If the supply cord is damaged, it MUST be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard. WARNING ▪ If the power supply has a missing or wrong N-phase, equipment might break down.
  • Page 82 Electrical installation Component Unit BS4A BS6A BS8A BS10A BS12A Recommended field fuse 6 A Residual current device Must comply with applicable legislation. MCA=Minimum circuit ampacity. Stated values are maximum values. Transmission wiring The transmission wiring outside the unit should be wrapped and routed together with the field piping.
  • Page 83 Electrical installation ▪ If stranded conductor wires are used, install a round crimp-style terminal on the end of the wire. Place the round crimp-style terminal on the wire up to the covered part and fasten the terminal with the appropriate tool. a Stranded conductor wire b Round crimp-style terminal ▪...
  • Page 84 Electrical installation 16.2 To connect the electrical wiring NOTICE ▪ Follow the wiring diagram (delivered with the unit, located at the inside of the service cover). ▪ For instructions on how to connect the optional equipment, see the installation manual delivered with the optional equipment. ▪...
  • Page 85 Electrical installation Example INDOOR INDOOR INDOOR INDOOR OUT- UNIT UNIT UNIT UNIT DOOR UNIT IN/D OUT/D UNIT F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 INDOOR INDOOR INDOOR...
  • Page 86 Electrical installation b Transmission cable (field supply) c Tie-wrap (accessory) Guidelines ▪ Make sure the length of the earth wire between the fixation point and the terminal is longer than the length of the power supply wires between the fixation point and the terminal.
  • Page 87 Electrical installation d Finishing tape e Transmission wiring (F1/F2) f Insulation 16.4 To set the DIP switches The DIP switches are located on the PCBs A1P, A2P (BS6~12A) and A3P (BS10-12A). A B C D E F G H J K L a Terminal for transmission wiring to indoor unit b Branch pipe port number c DIP switches...
  • Page 88 Electrical installation Setting when joining branch pipe ports DS2 (A1P) DS2 (A2P) DS2 (A3P) BS4A BS6A BS8A BS10A BS12A Target branch pipe port ON=joined / OFF=NOT joined (factory default) Note: When joining branch pipe ports, ONLY the combinations in above table are possible.
  • Page 89 Electrical installation NOTICE The FAN output has a limited capacity of 220~240 V AC – 0.5 A. Do NOT use the FAN output to directly power the fan. Instead, use the output to energise a relay that controls the fan circuit. (FAN) EXAMPLE a FAN output terminal b Relay c Extraction fan power supply...
  • Page 90 Electrical installation BS4~12A a Power supply cable (field supply) b Output cable (FAN cable shown)(field supply) c Tie-wrap (accessory) BS4~12A14AJV1B Installer and user reference guide VRV 5 branch selector unit 4P695527-1 – 2022.02...
  • Page 91 Configuration 17 Configuration DANGER: RISK OF ELECTROCUTION INFORMATION It is important that all information in this chapter is read sequentially by the installer and that the system is configured as applicable. 17.1 Making field settings 17.1.1 About making field settings To configure the BS unit, you MUST give input to the BS unit's main PCBs (A1P, A2P and A3P, depending on the unit).
  • Page 92 Configuration BS2 SET: for field setting BS3 RETURN: for field setting DS1, DS2 DIP switches a DIP switches b Push buttons c 7-segment displays Push buttons Use the push buttons to make the field settings. Operate the push buttons with an insulated stick (such as a closed ball-point pen) to avoid touching live parts.
  • Page 93 Configuration Blinking Access BS1 is used to switch between the default situation, mode 1 and mode 2. Access Action Default situation Mode 1 ▪ Push BS1 one time. The 7‑segment display indication changes to: ▪ Push BS1 one more time to return to the default situation.
  • Page 94 Configuration 3 Push BS2 two times. Result: Mode 1 setting 2 is addressed: 4 Push BS3 one time. The displays shows the software version. Result: Mode 1 setting 2 is addressed and selected, return value is monitored information. 5 Push BS1 one time to quit mode 1. 17.1.6 To use mode 2 Mode 2 is used to set field settings of the BS unit.
  • Page 95 Configuration 4 Push BS3 one time. The display shows the status of the setting (depending on the actual field situation). In the case of [2‑7], the default value is "1", which means the ventilated enclosure function is enabled. Result: Mode 2 setting 7 is addressed and selected, return value is the current setting situation.
  • Page 96 Configuration This setting must be configured on all main PCBs (A1P, A2P and A3P) of the BS unit. [2-2] Definition 0 (default) Parallel cluster Series cluster [2-3] Setting to simulate a refrigerant leak. ▪ Choose value "1" during commissioning of the BS unit. This activates the safety measures of the BS unit and confirms that the safety measures are working as intended and are conform with the applicable legislation.
  • Page 97 Configuration [2-6] Commissioning check Completed [2-7] Setting to enable or disable the ventilated enclosure safety measure of the BS unit. ▪ Choose value "1" if the ventilated enclosure is a necessary safety measure. ▪ Choose value "0" if only an external alarm is required. "13.3 To determine the required safety measures" [  41].
  • Page 98 Configuration BS unit Main PCB Address value (e) BS12A BS8A BS4A [2-9] Setting to assign an address value to the BS unit for error handling. Assign the same address to the main PCBs (A1P, A2P and A3P) of 1 BS unit, and another address to the other BS units.
  • Page 99 Configuration This setting is only to be used during the test run of the BS unit when a ventilated enclosure is used as a safety measure of the BS unit and an external alarm is added as an additional measure. During the BS unit test run, which is started by setting [2-3] to "1", the external fan and external alarm are both active.
  • Page 100 NOTICE General commissioning checklist. Next to the commissioning instructions in this chapter, a general commissioning checklist is also available on the Daikin Business Portal (authentication required). The general commissioning checklist is complementary to the instructions in this chapter and can be used as a guideline and reporting template during commissioning and hand-over to the user.
  • Page 101 Commissioning The BS unit is properly mounted. The field wiring has been carried out according to the instructions described in this document, according to the wiring diagram and according to the applicable legislation. The drain piping is properly installed and insulated, and drainage flows smoothly. Check for water leaks.
  • Page 102 Commissioning ▪ Ventilated enclosure – multiple BS units to 1 extraction fan, parallel configuration: all BS units with a ventilated enclosure – parallel configuration. ▪ Ventilated enclosure – multiple BS units to 1 extraction fan, series configuration: only 1 BS unit with a ventilated enclosure – series configuration. Tip: choose the BS unit which is most upstream, where the air inlet (damper) is free and you can measure the airflow rate.
  • Page 103 Commissioning Example A BS12A unit with an airflow rate during the test run of 115  m³/h. The pressure drop graph shows that this results in an internal pressure which is 42.9 Pa below the ambient pressure. Both requirements are met: ▪ The pressure inside the BS unit is more than 20 Pa below the ambient pressure (42.9 Pa).
  • Page 104 Commissioning a BS unit b Air outlet duct c Direction airflow d Hot wire probe anemometer 18.3.4 To perform a BS unit test run "17.1.8 Mode 2: field settings" [  95] for more information on the settings that are used. Respect the sequence indicated in "18.3.1 About the BS unit test run" [  101].
  • Page 105 Commissioning Symptom: The extraction fan does not turn ON Possible causes Corrective action Incorrect field settings Check if all field settings are made correctly. When in parallel or series configuration, the field settings of all BS units in a cluster need to be made correctly.
  • Page 106 Hand-over to the user 19 Hand-over to the user Once the test run is finished and the unit operates properly, make sure the following is clear for the user: ▪ Make sure that the user has the printed documentation and ask him/her to keep it for future reference.
  • Page 107 Troubleshooting 20 Troubleshooting CAUTION "3  Specific installer safety instructions"  [   10] to make sure troubleshooting complies with all safety regulations. 20.1 Solving problems based on error codes If the BS unit runs into a problem, the user interface of the indoor unit(s) connected to the BS unit displays an error code.
  • Page 108 Disposal 21 Disposal NOTICE Do NOT try to dismantle the system yourself: dismantling of the system, treatment of the refrigerant, oil and other parts MUST comply with applicable legislation. Units MUST be treated at a specialised treatment facility for reuse, recycling and recovery. BS4~12A14AJV1B Installer and user reference guide VRV 5 branch selector unit...
  • Page 109 Technical data 22 Technical data ▪ A subset of the latest technical data is available on the regional Daikin website (publicly accessible). ▪ The full set of latest technical data is available on the Daikin Business Portal (authentication required). 22.1 Wiring diagram The wiring diagram is delivered with the unit, located at the inside of the service cover.
  • Page 110 Technical data Symbol Meaning AC*, CN*, E*, HA*, HE*, HL*, HN*, HR*, Connection, connector MR*_A, MR*_B, S*, U, V, W, X*A, K*R_*, NE D*, V*D Diode Diode bridge DIP switch Heater FU*, F*U, (for characteristics, see PCB Fuse inside your unit) Connector (frame ground) Harness H*P, LED*, V*L...
  • Page 111 Technical data Symbol Meaning Circuit breaker Q*DI, KLM Earth leak circuit breaker Overload protector Thermo switch Residual current device Resistor Thermistor Receiver Limit switch Float switch S*NG Refrigerant leak detector S*NPH Pressure sensor (high) S*NPL Pressure sensor (low) S*PH, HPS* Pressure switch (high) S*PL Pressure switch (low)
  • Page 112 Technical data Specific BS unit wiring diagram legend Symbol Meaning Electronic expansion valve (suction) Electronic expansion valve (HP/LP) EVSC Electronic expansion valve (subcool) EVSG Electronic expansion valve (gas shut-off valve) EVSL Electronic expansion valve (liquid shut- off valve) X15A Connector (drain up kit abnormal signal) Notes This wiring diagram applies to the BS unit only.
  • Page 113 Technical data Model DS1, DS2 factory settings A1P, A2P BS12A To set the DIP switches (DS1~2) and push buttons (BS1~3), see the installation manual BS4~12A14AJV1B Installer and user reference guide VRV 5 branch selector unit 4P695527-1 – 2022.02...
  • Page 114 Optional equipment Equipment made or approved by Daikin that can be combined with the product according to the instructions in the accompanying documentation. Field supply Equipment NOT made by Daikin that can be combined with the product according to the instructions in the accompanying documentation.
  • Page 116 4P695527-1 2022.02 Verantwortung für Energie und Umwelt...

This manual is also suitable for:

Vrv 5 bs6a14ajv1bVrv 5 bs8a14ajv1bVrv 5 bs10a14ajv1bVrv 5 bs12a14ajv1b

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