Daikin VRV IV+ Installation And Operation Manual
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Daikin VRV IV+ Installation And Operation Manual

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Installation and operation manual
VRV IV+ heat pump
RYYQ8U7Y1B*
RYYQ10U7Y1B*
RYYQ12U7Y1B*
RYYQ14U7Y1B*
RYYQ16U7Y1B*
RYYQ18U7Y1B*
RYYQ20U7Y1B*
RYMQ8U7Y1B*
RYMQ10U7Y1B*
RYMQ12U7Y1B*
RYMQ14U7Y1B*
RYMQ16U7Y1B*
RYMQ18U7Y1B*
RYMQ20U7Y1B*
RXYQ8U7Y1B*
RXYQ10U7Y1B*
RXYQ12U7Y1B*
RXYQ14U7Y1B*
RXYQ16U7Y1B*
Installation and operation manual
RXYQ18U7Y1B*
English
VRV IV+ heat pump
RXYQ20U7Y1B*

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  • Page 1 Installation and operation manual VRV IV+ heat pump RYYQ8U7Y1B* RYYQ10U7Y1B* RYYQ12U7Y1B* RYYQ14U7Y1B* RYYQ16U7Y1B* RYYQ18U7Y1B* RYYQ20U7Y1B* RYMQ8U7Y1B* RYMQ10U7Y1B* RYMQ12U7Y1B* RYMQ14U7Y1B* RYMQ16U7Y1B* RYMQ18U7Y1B* RYMQ20U7Y1B* RXYQ8U7Y1B* RXYQ10U7Y1B* RXYQ12U7Y1B* RXYQ14U7Y1B* RXYQ16U7Y1B* Installation and operation manual RXYQ18U7Y1B* English VRV IV+ heat pump RXYQ20U7Y1B*...
  • Page 2 2P546224-1...
  • Page 3 2P546224-1...
  • Page 4 Table of contents 8.2.15 Symptom: The display shows "88"....... 14 Table of contents 8.2.16 Symptom: The compressor in the outdoor unit does not stop after a short heating operation ....... 14 8.2.17 Symptom: The inside of an outdoor unit is warm even when the unit has stopped ........

  • Page 5: Table Of Contents

    16.1.4 To access mode 1 or 2 ..........35 16.1.5 To use mode 1 ............35 ▪ The full set of latest technical data is available on the Daikin 16.1.6 To use mode 2 ............35 Business Portal (authentication required).
  • Page 6 3 User safety instructions WARNING WARNING During tests, NEVER pressurize the product with a ▪ All wiring MUST be performed by an authorised pressure higher than the maximum allowable pressure (as electrician and MUST comply with the applicable indicated on the nameplate of the unit). legislation.
  • Page 7 3 User safety instructions ▪ Batteries are marked with the following symbol: General WARNING If you are NOT sure how to operate the This means that the batteries may NOT be mixed with unsorted unit, contact your installer. household waste. If a chemical symbol is printed beneath the symbol, this chemical symbol means that the battery contains a WARNING heavy metal above a certain concentration.
  • Page 8 4 About the system WARNING WARNING Never touch the air outlet or the Stop operation and shut off the horizontal blades while the swing flap power if anything unusual occurs is in operation. Fingers may become (burning smells etc.). caught or the unit may break down. Leaving the unit running under such circumstances may cause breakage, CAUTION...
  • Page 9 5 User interface 6.2.2 About cooling, heating, fan only, and Model Description automatic operation RYYQ Single continuous heating model. RYMQ Multi continuous heating model. ▪ Changeover cannot be made with a user interface whose display RXYQ Single and multi non-continuous heating shows "change-over under centralised control"...
  • Page 10 6 Operation 6.2.5 To operate the system (WITH cool/heat 6.3.2 To use the dry program (WITHOUT cool/ changeover remote control switch) heat changeover remote control switch) Overview of the changeover remote control switch To start FAN ONLY/AIR CONDITIONING 1 Press the operation mode selector button on the user interface SELECTOR SWITCH several times and select (program dry operation).
  • Page 11 7 Maintenance and service The displays of slave user interfaces show (change-over Corner units under centralised control) and slave user interfaces automatically follow the operation mode directed by the master user interface. Ceiling suspended units Only the master user interface can select heating or cooling mode. Wall-mounted units Maintenance and service For the following conditions, a micro computer controls the air flow...
  • Page 12 8 Troubleshooting If the system does NOT operate properly except for the above After-sales service and warranty mentioned cases and none of the above mentioned malfunctions is evident, investigate the system in accordance with the following 7.2.1 Warranty period procedures. Malfunction Measure ▪...
  • Page 13 8 Troubleshooting Main code Contents Main code Contents Drain malfunction (indoor unit) INV voltage power shortage Filter dust chamber malfunction (indoor) System test run not yet executed Capacity setting malfunction (indoor) Faulty wiring indoor/outdoor Transmission malfunction between main PCB and sub Abnormal user interface - indoor communication PCB (indoor) Faulty wiring to outdoor/outdoor...
  • Page 14 9 Relocation cold air blowing directly on occupants of the room. The fan speed 8.2.11 Symptom: Noise of air conditioners will not change even when another indoor unit is in heating (Outdoor unit) operation, if the button is pressed. When the tone of operating noise changes. This noise is caused by the change of frequency.
  • Page 15 About ID Øa 19.1 22.2 ID Øb is part of Daikin's wider commitment to reduce our environmental footprint. With we want to create a circular economy for refrigerants. One of the actions to achieve this, is the ▪ Bottom connection 25.4...
  • Page 16 If the unit has to operate for 5 days in this area with BP box (required to connect Residential Air (RA) or Sky Air high humidity (>90%), Daikin recommends to install the (SA) direct expansion (DX) indoor units) optional heater tape kit (EKBPH012TA or EKBPH020TA)
  • Page 17 13 Unit installation For service purposes, the pushbuttons on the main PCB need to be accessed. To access these pushbuttons, the electrical component box cover does not need to be opened. See "To access the field components" [ 4  35]. setting 13.2.2 To open the electrical component box of the outdoor unit...
  • Page 18 14 Piping installation Outdoor unit Piping outer diameter size (mm) Piping installation capacity type (HP) Gas pipe Liquid pipe 26~34 34.9 19.1 14.1 Preparing refrigerant piping 36~54 41.3 19.1 14.1.1 Refrigerant piping requirements D: Piping between refrigerant branch kits Choose from the following table in accordance with the indoor unit NOTICE total capacity type, connected downstream.
  • Page 19 14 Piping installation 14.1.3 To select refrigerant branch kits Size up HP class Piping outer diameter size (mm) Refrigerant refnets Gas pipe Liquid pipe size" [ 4  18]. For piping example, refer to "To select the piping 12+14 28.6 12.7 → 15.9 ▪...
  • Page 20 14 Piping installation To indoor unit RYMQ8+RYMQ12+RYMQ18. Largest connection Ø28.6 Oil collects to the outmost outdoor unit when the system (RYMQ18); Ø22.2 (RYMQ12) and Ø19.1 (RYMQ8). In figure below stops only equalising pipe is shown. NOT allowed (oil remains in piping) Allowed ▪...
  • Page 21 14 Piping installation Large knockout hole 14.2.4 To connect the refrigerant branching kit Drill Points for drilling For installation of the refrigerant branching kit, refer to the installation NOTICE manual delivered with the kit. Precautions when making knockout holes: ▪ Mount the refnet joint so that it branches either horizontally or vertically.
  • Page 22 14 Piping installation ▪ After handling the service port, make sure to tighten the service port cover securely. For the tightening torque, refer to the table below. ▪ Check for refrigerant leaks after tightening the service port cover. Tightening torques Stop valve Tightening torque (N•m) (when opening or size (mm)
  • Page 23 14 Piping installation DANGER: RISK OF ELECTROCUTION NOTICE Make sure that all indoor units connected to the outdoor unit are powered on. NOTICE Wait to apply setting [2‑21] until the outdoor unit has finished the initialisation. Leak test and vacuum drying Checking the refrigerant piping involves: ▪...
  • Page 24 14 Piping installation Equalising line stop valve (only for RYMQ) 3 Should you fail to reach the target vacuum within 2 hours or Valve A maintain the vacuum for 1 hour, the system may contain too Valve B much moisture. In that case, break the vacuum by pressurising Valve C with nitrogen gas to a gauge pressure of 0.05 ...
  • Page 25 14 Piping installation 14.4.3 To determine the additional refrigerant NOTICE amount In case of a multiple outdoor system, turn on the power of all outdoor units. INFORMATION NOTICE For final charge adjustment in the test laboratory, please contact your local dealer. Be sure to turn ON the power 6 hours before operation in order to have power running to the crankcase heater and NOTICE...
  • Page 26 14 Piping installation 8 HP 12 HP 125 125 Action Determine the connection ratio: ▪ Total outdoor unit capacity class = 500 ▪ Total indoor unit capacity class = 550 => CR≥100% Determine parameter C: ▪ N=5 ▪ 8 HP: N≥4 => C1=N×0.1=5×0.1 kg ▪...
  • Page 27 14 Piping installation 14.4.4 To charge refrigerant: Flow chart refrigerant" [ 4  28]. For more information, see "To charge Pre-charging refrigerant Step 1 p < p > Calculate additional refrigerant charge amount: R (kg) Step 2+3 R410A • Open valves C, D and B to the liquid and equalising line •...
  • Page 28 14 Piping installation << Continuation of previous page Heating charging Cooling charging ("t22" startup control) ("t02" startup control) ("t23" waiting for stable heating) ("t03" waiting for stable cooling) "t23" is flashing "t03" is flashing • Push BS2 within 5 minutes •...
  • Page 29 14 Piping installation p < p > NOTICE ▪ The refrigerant charging port is connected to the piping inside the unit. The unit's internal piping is already factory charged with refrigerant, so be careful when connecting the charge hose. R410A ▪...
  • Page 30 15 Electrical installation INFORMATION Code Cause Solution Indicates an indoor unit Refer to requirements to ▪ When a malfunction is detected during the procedure which is not compatible be able to execute leak (e.g, in case of closed stop valve), a malfunction code with leak detection detection operation.

  • Page 31: About Electrical Compliance

    15 Electrical installation WARNING 15.2 Safety device requirements ALWAYS use multicore cable for power supply cables. The power supply must be protected with the required safety devices, i.e. a main switch, a slow blow fuse on each phase and an 15.1 About electrical compliance earth leakage protector in accordance with the applicable legislation.

  • Page 32: To Route And Fix The Transmission Wiring

    15 Electrical installation 8~12 HP 14~20 HP Field power supply (with earth leakage protector) Main switch Earth connection Outdoor unit Indoor unit User interface Indoor power supply wiring (sheathed cable) (230 V) Transmission wiring (sheathed cable) (16 V) Outdoor power supply wiring (sheathed cable) Power supply 3N~ 50 Hz Power supply 1~ 50 Hz Earth wiring...

  • Page 33: To Finish The Transmission Wiring

    15 Electrical installation 8~12 HP 14~20 HP Unit B (slave outdoor unit) Unit C (slave outdoor unit) Master/slave transmission (Q1/Q2) Outdoor/indoor transmission (F1/F2) Outdoor unit/other system transmission (F1/F2) INFORMATION U-series units cannot share the same refrigerant circuit with T-series units. However, electrically, U-series units and T-series units can be connected via F1/F2.

  • Page 34: To Check The Insulation Resistance Of The Compressor

    16 Configuration When connecting the earth wire, it is recommended to Push buttons and DIP switches perform curling. Item Description Multiple outdoor units Push buttons By operating the push buttons it is possible to: To connect the power supply for multiple outdoor units to each other, ▪...

  • Page 35: To Access The Field Setting Components

    16 Configuration Turn on the power supply of the outdoor unit and all indoor units. When the communication between indoor units and outdoor unit(s) is established and normal, the 7‑segment display indication state will be as below (default situation when shipped from factory). DS1 DS2 BS1 BS2 Stage...

  • Page 36: Mode 1: Monitoring Settings

    16 Configuration [1‑17] [1‑18] [1‑19] What Shows: Changing and accessing Once mode 2 is selected (push BS1 for the setting in mode 2 more than 5 seconds), you can select ▪ [1‑17]: The latest malfunction code. the wanted setting. It is done by pushing ▪...

  • Page 37: To Connect The Pc Configurator To The Outdoor Unit

    16 Configuration ▪ For guidance concerning the input of the additional refrigerant [2‑0] Description charge amount and leak detection function see "16.2  Using the Slave unit for Cool/Heat operation when function" [ 4  38]. leak detection outdoor units are connected in multiple system combination [2‑20] It is necessary to use the optional external control adaptor for...

  • Page 38: Using The Leak Detection Function

    Next Internal wiring commissioning instructions in this chapter, a general commissioning checklist is also available on the Daikin Visually check the electrical component box and the inside of the unit for loose connections or damaged Business Portal (authentication required).

  • Page 39: About The Test Run

    17 Commissioning Oil leak INFORMATION Check the compressor for oil leakage. If there is an oil ▪ When [2‑88]=0, the test operation time can take up to leak, try to repair the leak. If the repairing is unsuccessful, 4 hours. call your local dealer. ▪...

  • Page 40: Correcting After Abnormal Completion Of The Test Run

    18 Hand-over to the user Step Description Hand-over to the user Communication check Once the test run is finished and the unit operates properly, please Stop valve check make sure the following is clear for the user: Pipe length check ▪...
  • Page 41 19 Troubleshooting Main code Sub code Cause Solution Master Slave 1 Slave 2 Low pressure malfunction: ▪ Open stop valves. ▪ Stop valve closed ▪ Check refrigerant amount+recharge unit. ▪ Refrigerant shortage ▪ Check the user interface's display or ▪ Indoor unit malfunction transmission wiring between the outdoor unit and the indoor unit.
  • Page 42 19 Troubleshooting Main code Sub code Cause Solution Master Slave 1 Slave 2 Gas temperature sensor (after subcool Check connection on PCB or actuator. HE) malfunction (R6T) - A1P (X30A) High pressure sensor malfunction Check connection on PCB or actuator. (S1NPH): open circuit - A1P (X32A) High pressure sensor malfunction Check connection on PCB or actuator.

  • Page 43: Technical Data

    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). 20.1 Service space: Outdoor unit...
  • Page 44 20 Technical data (mm) ABCD Sides along the installation site with obstacles Front side Suction side ▪ In case of an installation site where sides A+B+C+D have obstacles, the wall heights of sides A+C have no impact on service space dimensions. Refer to the figure above for impact of wall heights of sides B+D on service space dimensions.

  • Page 45: Piping Diagram: Outdoor Unit

    20 Technical data Piping diagram: RYMQ8~12 20.2 Piping diagram: Outdoor unit INFORMATION For a legend explaining the figures below, refer to the end of this topic. Piping diagram: RYYQ8~12 (S1NPL) (S1NPH) (S1PH) R21T (S1NPL) (S1NPH) (S1PH) R21T Piping diagram: RYMQ14~20 Piping diagram: RYYQ14~20 (S1NPH) (S1NPL)

  • Page 46: Wiring Diagram: Outdoor Unit

    20 Technical data Piping diagram: RXYQ14~20 For 14~20 HP: Colours (see below). 10 Colours (see below). Symbols: Field wiring Terminal block Connector Terminal (S1NPH) (S1NPL) Protective earth Noiseless earth Earth wiring (S1PH) (S2PH) Field supply R22T R21T Switch box Option Colours: Black Compressor (M1C)
  • Page 47 20 Technical data PS (A1P, Switching power supply F1U, F2U Fuse (T 3.15 A / 250 V) A3P) (A1P) Q1DI Earth leakage circuit breaker (field supply) Field fuse Q1LD (A1P) Earth current detector (field supply) F101U Fuse (A4P, A7P) R24 (A4P) Resistor (current sensor) F401U, Fuse R300 (A3P) Resistor (current sensor)

  • Page 48: Disposal

    21 Disposal Electronic expansion valve (storage vessel) Solenoid valve (main) Solenoid valve (accumulator oil return) Solenoid valve (oil 1) Solenoid valve (oil 2) Solenoid valve (subcool) Noise filter (ferrite core) Z*F (A2P) Noise filter (with surge absorber) Connectors for optional accessories: X10A Connector (drainpan heater) X37A...
  • Page 52 4P546220-1 C 0000000Y 4P546220-1C 2020.10 Verantwortung für Energie und Umwelt...

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