Daikin RYYQ8T7Y1B Installer And User Reference Manual
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Daikin RYYQ8T7Y1B Installer And User Reference Manual

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Installer and user
reference guide
VRV IV system air conditioner
RYYQ8T7Y1B*    
RYYQ10T7Y1B*    
RYYQ12T7Y1B*    
RYYQ14T7Y1B*    
RYYQ16T7Y1B*    
RYYQ18T7Y1B*    
RYYQ20T7Y1B*    
                      
RYMQ8T7Y1B*    
RYMQ10T7Y1B*    
RYMQ12T7Y1B*    
RYMQ14T7Y1B*    
RYMQ16T7Y1B*    
RYMQ18T7Y1B*    
RYMQ20T7Y1B*    
                      
RXYQ8T7Y1B*    
RXYQ10T7Y1B*    
RXYQ12T7Y1B*    
RXYQ14T7Y1B*    
RXYQ16T7Y1B*    
Installer and user reference guide
RXYQ18T7Y1B*    
English
VRV IV system air conditioner
RXYQ20T7Y1B*

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Summary of Contents for Daikin RYYQ8T7Y1B

  • Page 1 Installer and user reference guide VRV IV system air conditioner RYYQ8T7Y1B*     RYYQ10T7Y1B*     RYYQ12T7Y1B*     RYYQ14T7Y1B*     RYYQ16T7Y1B*     RYYQ18T7Y1B*     RYYQ20T7Y1B*                            RYMQ8T7Y1B*     RYMQ10T7Y1B*     RYMQ12T7Y1B*     RYMQ14T7Y1B*     RYMQ16T7Y1B*     RYMQ18T7Y1B*     RYMQ20T7Y1B*                            RXYQ8T7Y1B*     RXYQ10T7Y1B*     RXYQ12T7Y1B*     RXYQ14T7Y1B*     RXYQ16T7Y1B*     Installer and user reference guide RXYQ18T7Y1B*    ...

  • Page 2: Table Of Contents

    Table of Contents 6.4.1 Precautions when connecting refrigerant piping ..22 Table of Contents 6.4.2 About connecting the refrigerant piping ....... 22 6.4.3 To route the refrigerant piping........23 6.4.4 To connect the refrigerant piping to the outdoor unit ... 23 6.4.5 To connect the multi connection piping kit ....

  • Page 3: General Safety Precautions

    1 General safety precautions 9 Maintenance and service 18.4.1 Warranty period ............85 18.4.2 Recommended maintenance and inspection....85 Overview: Maintenance and service ......... 51 18.4.3 Recommended maintenance and inspection cycles..86 Maintenance safety precautions..........51 18.4.4 Shortened maintenance and replacement cycles ..86 9.2.1 To prevent electrical hazards........

  • Page 4: For The User

    Make sure installation, testing and applied materials comply with applicable legislation (on top of the For the user instructions described in the Daikin documentation). CAUTION ▪ If you are not sure how to operate the unit, contact your installer. Wear adequate personal protective equipment (protective ▪...

  • Page 5: Installation Site

    1 General safety precautions In accordance with the applicable legislation, it might be necessary DANGER: RISK OF EXPLOSION to provide a logbook with the product containing at least: information Pump down – Refrigerant leakage. If you want to pump on maintenance, repair work, results of tests, stand-by periods,… down the system, and there is a leakage in the refrigerant Also, at least, following information must be provided at an circuit:...

  • Page 6: Brine

    1 General safety precautions CAUTION WARNING When the refrigerant charging procedure is done or when ▪ ONLY use copper wires. pausing, close valve refrigerant tank ▪ Make sure the field wiring complies with the applicable immediately. If the valve is not closed immediately, legislation.

  • Page 7: About The Documentation

    ▪ A subset of the latest technical data is available on the regional ▪ Format: Paper (in the box of the outdoor unit) Daikin website (publicly accessible). ▪ The full set of latest technical data is available on the Daikin extranet (authentication required). For the installer...

  • Page 8: To Remove The Accessories From The Outdoor Unit

    4 About the units and options 8~12 HP 14~20 HP Accessory pipes (mm) Øa Øb Liquid pipe ▪ Front connection ID Øb 12.7 12.7 ID Øa 12.7 15.9 ▪ Bottom connection ID Øb ID Øa Equaliser pipe 19.1 ▪ Front connection ID Øa 19.1 22.2...

  • Page 9: Identification Label: Outdoor Unit

    4 About the units and options ▪ Which outdoor units have to be used as standalone units, and The outdoor unit is designed to work in heating mode at ambient which outdoor units can be combined. temperatures from –20°C WB to 15.5°C WB and in cooling mode at ambient temperatures from –5°C DB to 43°C DB.

  • Page 10: Possible Combinations Of Outdoor Units

    5 Preparation ▪ VRV direct expansion (DX) indoor units (air to air applications). Description Model name ▪ SA/RA (Sky Air/Residential Air) direct expansion (DX) indoor units Refnet joint KHRQ22M20T (air to air applications). Further referred to as RA DX indoor units. KHRQ22M29T9 ▪...

  • Page 11: Preparing Installation Site

    5 Preparation Preparing installation site CAUTION Appliance not accessible to the general public, install it in a secured area, protected from easy access. 5.2.1 Installation site requirements of the outdoor unit This unit, both indoor and outdoor, is suitable for installation commercial light...

  • Page 12: Additional Installation Site Requirements Of The Outdoor Unit In Cold Climates

    Ambient indoor temperature Ambient outdoor temperature If the unit has to operate for 5 days in this area with high humidity (>90%), Daikin recommends to install the INFORMATION optional heater tape kit (EKBPH012T or EKBPH020T) to For instructions on how to install the snow cover, contact keep the drain holes free.

  • Page 13: Preparing Refrigerant Piping

    5 Preparation 3 Calculate the refrigerant density using the results of the calculations in steps 1 and 2 above. If the result of the above calculation exceeds the maximum concentration level, a ventilation opening to the adjacent room shall be made. Formula F/G≤H Total volume of refrigerant in the refrigerant...
  • Page 14 5 Preparation Indoor unit capacity Piping outer diameter size (mm) index Gas pipe Liquid pipe 63~140 15.9 19.1 22.2 ▪ When the equivalent pipe length between outdoor and indoor units is 90  m or more, the size of the main pipes (both gas side and liquid side) must be increased.

  • Page 15: To Select Refrigerant Branch Kits

    5 Preparation F: Piping between refrigerant branch kit and BP Indoor unit capacity index 2 pipes unit ≥640 KHRQ22M75H If the pipe size above the refnet header is Ø34.9 or more, Pipe size for direct connection on BP unit must be based on the total KHRQ22M75H is required.

  • Page 16: Piping Length: Vrv Dx Only

    5 Preparation Definitions Example Description Example 2.2 Multi outdoor Term Definition Branch with refnet joint Actual piping length Pipe length between outdoor and indoor and refnet header units. Equivalent piping Pipe length between outdoor and indoor length units. Total piping length Total piping length from the outdoor to all indoor units.

  • Page 17: Piping Length: Vrv Dx And Hydrobox

    5 Preparation Maximum allowable height difference It is necessary to increase the pipe size of the gas and liquid piping if the pipe length between the first and the final branch kit ≤50 m (40 m) (if outdoor is located below indoor units) is over 40 m.

  • Page 18: Piping Length: Vrv Dx And Ra Dx

    5 Preparation Assume equivalent piping length of refnet joint=0.5 m and Actual piping 135 m refnet header=1 m (for calculation purposes). length Example 1: ▪ Between BP unit and indoor unit. ▪ a+b+c+d+e+f+g+p≤135 m Indoor unit capacity index Pipe length ▪ a+b+c+d+k≤135 m <60 2~15 m Example 2: 2~12 m...

  • Page 19: Multiple Outdoor Units: Possible Layouts

    5 Preparation Piping between outdoor unit and first refrigerant branch kit Additional refrigerant charge according to liquid piping Piping between refrigerant branch kits diameter/length and outdoor unit specific amount. See Piping between refrigerant branch kit and indoor units "6.7.3 To determine the additional refrigerant amount" on a1, a2 Refnet joints page 28.

  • Page 20: Preparing Electrical Wiring

    5 Preparation ▪ If the piping length between the outdoor units exceeds 2 m, create Model (Ω) Minimum S a rise of 200  mm or more in the gas line within a length of 2  m value (kVA) from the kit. RYYQ8/RYMQ8/RXYQ8 —...

  • Page 21: Installation

    6 Installation Model Minimum Recommended Opening the units circuit fuses ampacity 6.2.1 To open the outdoor unit RYYQ34/RXYQ34 66.0 A 80 A RYYQ36/RXYQ36 70.0 A 80 A DANGER: RISK OF ELECTROCUTION RYYQ38/RXYQ38 76.0 A 100 A DANGER: RISK OF BURNING RYYQ40/RXYQ40 81.0 A 100 A RYYQ42/RXYQ42 84.0 A 100 A To gain access to the unit, front plates need to be opened as follows: RYYQ44/RXYQ44 86.0 A...

  • Page 22: Mounting The Outdoor Unit

    6 Installation NOTICE When closing the electrical component box cover, make sure that the sealing material on the lower back side of the cover is not caught and bend towards the inside. NOTICE ▪ Prepare a water drainage channel around the foundation to drain waste water from around the unit.

  • Page 23: To Route The Refrigerant Piping

    6 Installation ▪ Routing and connecting the refrigerant piping to the outdoor unit NOTICE ▪ Protecting the outdoor unit against contamination Precautions when connecting field piping. Add brazing material as shown in the figure. ▪ Connecting the refrigerant piping to the indoor units (see the ≤Ø25.4 >Ø25.4 installation manual of the indoor units)

  • Page 24: Multiple Outdoor Units: Knockout Holes

    6 Installation 6.4.6 Multiple outdoor units: Knockout holes Connection Description Front connection Remove the front plate knockout holes to connect. Close the areas marked with " ". (When the piping is routed from the front panel.) ▪ Only use clean pipes. ▪...

  • Page 25: To Remove The Pinched Pipes

    6 Installation To handle the stop valve cover Service port and service port cover Stop valve Field piping connection ▪ The stop valve cover is sealed where indicated by the arrow. Take Stop valve cover care not to damage it. ▪...

  • Page 26: Checking The Refrigerant Piping

    6 Installation 2 Connect the vacuuming/recovery unit through a manifold to the Checking the refrigerant piping service port of all stop valves. p < p > 6.5.1 About checking the refrigerant piping Refrigerant piping works are Finish piping work. finished? R410A The indoor units and/or Use procedure:...

  • Page 27: Checking Refrigerant Piping: General Guidelines

    6 Installation For more information on the state of the valves, refer to To check for leaks: Vacuum leak test "6.5.3 Checking refrigerant piping: Setup" on page 27. 1 Evacuate the system from the liquid and gas piping to –⁠ 1 00.7 kPa (–⁠ 1 .007 bar)(5 Torr absolute) for more than 2 hours. 6.5.2 Checking refrigerant piping: General 2 Once reached, turn off the vacuum pump and check that the...

  • Page 28: Charging Refrigerant

    6 Installation ▪ Make sure to insulate the connection piping and refrigerant branch NOTICE kits entirely. Before starting charging procedures, check ▪ Be sure to insulate the liquid and gas piping (for all units). 7‑segment display indication of the outdoor unit A1P PCB is as normal (see "7.2.4 ...
  • Page 29 6 Installation NOTICE The refrigerant charge of the system must be less than 100  kg. This means that in case the calculated total 8 HP 12 HP refrigerant charge is equal to or more than 95 kg you must divide your multiple outdoor system...

  • Page 30: To Charge Refrigerant: Flow Chart

    6 Installation 6.7.4 To charge refrigerant: Flow chart For more information, see "6.7.5 To charge refrigerant" on page 32. 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 31 6 Installation Charging refrigerant << Continuation of previous page R>Q Step 5 p < p > • Connect valve A to the refrigerant charge port (d) • Open all outdoor unit stop valves R410A Step 6 Proceed with automatic or manual charge Automatic charge Manual charge Step 6a...

  • Page 32: To Charge Refrigerant

    6 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 • Push BS2 within 5 minutes •...

  • Page 33: Step 6A: To Automatically Charge Refrigerant

    6 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 ▪ After adding the refrigerant, do not forget to close the lid of the refrigerant charging port.

  • Page 34: Step 6B: To Manually Charge Refrigerant

    6 Installation 4 When " " or " " starts flashing (ready for charging), push INFORMATION BS2 within 5 minutes. Open valve A. If BS2 is not pushed within ▪ When a malfunction is detected during the procedure 5 minutes, a malfunction code will appear: (e.g, in case of closed stop valve), a malfunction code will be displayed.

  • Page 35: Error Codes When Charging Refrigerant

    6 Installation If a multilingual fluorinated greenhouse gases label is 6.7.8 Error codes when charging refrigerant delivered with the unit (see accessories), peel off the applicable language and stick it on top of a. Code Cause Solution Factory refrigerant charge: see unit name plate Additional refrigerant amount charged Unusual low pressure on Close valve A...

  • Page 36: Field Wiring: Overview

    6 Installation Outdoor unit WARNING Indoor unit ▪ After finishing the electrical work, confirm that each User interface Indoor power supply wiring (sheathed cable) (230 V) electrical component and terminal inside the electrical Transmission wiring (sheathed cable) (16 V) components box is connected securely. Outdoor power supply wiring (sheathed cable) Power supply 3N~ 50 Hz ▪...

  • Page 37: Guidelines When Knocking Out Knockout Holes

    6 Installation 8~12 HP 14~20 HP For the above wiring, always use vinyl cords with 0.75 to 1.25 mm sheath or cables (2-core wires). (3-core wire cables are allowable for the cooler/heater changeover user interface only.) 6.8.4 Guidelines when knocking out knockout holes ▪...

  • Page 38: To Finish The Transmission Wiring

    6 Installation Unit C (slave outdoor unit) Power supply (possibility 1) Master/slave transmission (Q1/Q2) Power supply (possibility 2) Outdoor/indoor transmission (F1/F2) Power supply (possibility 3) . Use conduit. Outdoor unit/other system transmission (F1/F2) Tie wrap ▪ The interconnecting wiring between the outdoor units in the same Knockout hole has to be removed.

  • Page 39: Configuration

    7 Configuration Power supply terminal block Item Description Connect each power wire: RED to L1, WHT to L2, BLK to DIP switches By operating the DIP switches it is possible to: L3 and BLU to N Earth wire (GRN/YLW) ▪ DS1 (1): COOL/HEAT selector (refer to the Clamp the power supply to the plastic bracket using a field manual of the cool/heat selector switch).

  • Page 40: To Access The Field Setting Components

    7 Configuration Blinking 7.2.3 To access the field setting components It is not required to open the complete electronic component box to When above situation cannot be confirmed after 12  min, the access the push buttons on the PCB and read out the 7‑segment malfunction code can be checked on the indoor unit user interface display(s).

  • Page 41: To Use Mode 2

    7 Configuration Master, slave  1 and slave  2 indications are relevant in multiple 7.2.6 To use mode 2 outdoor unit system configurations. The allocation of which outdoor The master unit should be used to input field settings in unit is master, slave 1 or slave 2 are decided by the unit's logic. mode 2.

  • Page 42: Mode 2: Field Settings

    7 Configuration It can be convenient to check if the total number of indoor units Then the estimated leaked refrigerant which are installed match the total number of indoor units which are amount is displayed in recognised by the system. In case there is a mismatch, it is [1‑35]=1 [1‑29] recommended to check the communication wiring path between...
  • Page 43 7 Configuration [2‑9] [2‑18] target temperature during heating operation. Fan high static pressure setting. In order to increase the static pressure the outdoor unit fan is [2‑9] target (°C) delivering, this setting should be activated. For details about this 0 (default) Auto setting, see technical specifications.
  • Page 44 7 Configuration This setting will only be effective when the optional external control If the system always needs to be running under power consumption adaptor (DTA104A61/62) is installed and the setting [2‑12] was limitation conditions, this setting activates and defines the level activated.

  • Page 45: To Connect The Pc Configurator To The Outdoor Unit

    7 Configuration By changing setting [2‑83], you can allow the VRV DX indoor unit to Energy saving and optimum be the operation mode selector (system power OFF/ON is required operation after applying this setting). This heat pump system is equipped with advanced energy saving [2‑83] Description functionality.

  • Page 46: Available Comfort Settings

    7 Configuration To activate this in… Change… To activate this in… Change… Cooling operation [2‑8] to the appropriate value, Cooling operation [2‑81]=2. matching the requirements of the This setting is used in pre-designed system containing conjunction with setting [2‑8]. a high sensible solution. Heating operation [2‑82]=2.

  • Page 47: Example: Automatic Mode During Cooling

    7 Configuration 7.3.3 Example: Automatic mode during cooling 7.3.4 Example: Automatic mode during heating 100% 100% 49°C 46°C 6°C 3°C 35°C Actual load curve 2°C Virtual load curve (initial capacity automatic mode) Virtual target value (initial evaporation temperature value Virtual load curve (default automatic mode peak capacity) automatic mode) Load curve Required evaporation temperature value...

  • Page 48: Using The Leak Detection Function

    8 Commissioning Using the leak detection function Display Leaked amount (kg) 2≤x<2.5 2.5≤x<3 7.4.1 About automatic leak detection 3≤x<3.5 The (automatic) leak detection function is not by default activated. 3.5≤x<4 The (automatic) leak detection function can only start working when both below conditions are fulfilled: 4≤x<4.5 4.5≤x<5...

  • Page 49: Precautions When Commissioning

    8 Commissioning Commissioning typically consists of the following stages: Power supply voltage Checking the "Checklist before commissioning". Check the power supply voltage on the local supply panel. Performing a test run. The voltage must correspond to the voltage on the identification label of the unit.

  • Page 50: To Perform A Test Run

    8 Commissioning ▪ Judgement of piping length. To perform a test run ▪ Gathering reference data for leak detection functionality. If the 1 Close all front panels in order to not let it be the cause of leak detection functionality is required, the test run needs to be misjudgement (except the electrical component box inspection executed including a detailed refrigerant situation check.

  • Page 51: Operating The Unit

    9 Maintenance and service 8~12 HP 14~20 HP Operating the unit Once the unit is installed and test operation of outdoor unit and indoor units is finished, the operation of the system can start. X6A (A6P) X5A (A3P) For operating the indoor unit, the user interface of the indoor unit should be switched ON.

  • Page 52: 10 Troubleshooting

    10 Troubleshooting After correcting the abnormality, press BS3 to reset the malfunction NOTICE code and retry operation. Make sure to NOT recover any oil while recovering The malfunction code which is displayed on the outdoor unit will refrigerant. Example: By using an oil separator. indicate a main malfunction code and a sub code.
  • Page 53 10 Troubleshooting Main code Sub code Cause Solution Master Slave 1 Slave 2 Discharge temperature sensor Check connection on PCB or actuator. malfunction (R21T): open circuit - A1P (X29A) Discharge temperature sensor Check connection on PCB or actuator. malfunction (R21T): short circuit - A1P (X29A) Discharge temperature sensor Check connection on PCB or actuator.
  • Page 54 10 Troubleshooting Main code Sub code Cause Solution Master Slave 1 Slave 2 Warning indication: Leak detection or Execute autocharge function (see refrigerant amount check not manual); unit not ready for leak performed (system operation possible) detection functionality. Malfunction code: System test run not Execute system test run.

  • Page 55: Disposal

    11 Disposal Main code Sub code Cause Solution Master Slave 1 Slave 2 — Outdoor unit is out of temperature Retry when ambient conditions are range for leak detection operation satisfied. — Too low pressure was noticed during Restart leak detection operation. leak detection operation —...

  • Page 56: 12 Technical Data

    12 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 extranet (authentication required). 12.1 Overview: Technical data This chapter contains information about: ▪...

  • Page 57: Service Space: Outdoor Unit

    12 Technical data 12.3 Service space: Outdoor unit Make sure the space around the unit is adequate for servicing and the minimum space for air inlet and air outlet is available (refer to the figure below and choose one of the possibilities). (mm) ABCD Sides along the installation site with obstacles...

  • Page 58: Components: Outdoor Unit

    12 Technical data 12.4 Components: Outdoor unit Components: RYYQ8~12 Compressor (M1C) Compressor (M2C) Heat exchanger Fan motor (M1F, M2F) Accumulator Expansion valve, main (Y1E) Expansion valve, subcool heat exchanger (Y2E) Expansion valve, storage vessel (Y3E) Subcool heat exchanger Oil separator Solenoid valve, oil accumulator (Y2S) Solenoid valve, oil1 (Y3S) Solenoid valve, oil2 (Y4S)
  • Page 59 12 Technical data Components: RYYQ14~20 Compressor (M1C) Compressor (M2C) Heat exchanger Fan motor (M1F, M2F) Accumulator Expansion valve, main (Y1E) Expansion valve, subcool heat exchanger (Y2E) Expansion valve, storage vessel (Y3E) Subcool heat exchanger Oil separator Solenoid valve, oil accumulator (Y2S) Solenoid valve, oil1 (Y3S) Solenoid valve, oil2 (Y4S) 4‑way valve, main (Y1S)
  • Page 60 12 Technical data Components: RYMQ8~12 Compressor (M1C) Compressor (M2C) Heat exchanger Fan motor (M1F, M2F) Accumulator Expansion valve, main (Y1E) Expansion valve, subcool heat exchanger (Y2E) Expansion valve, storage vessel (Y3E) Subcool heat exchanger Oil separator Solenoid valve, oil accumulator (Y2S) Solenoid valve, oil1 (Y3S) Solenoid valve, oil2 (Y4S) 4‑way valve, main (Y1S)
  • Page 61 12 Technical data Components: RYMQ14~20 Compressor (M1C) Compressor (M2C) Heat exchanger Fan motor (M1F, M2F) Accumulator Expansion valve, main (Y1E) Expansion valve, subcool heat exchanger (Y2E) Expansion valve, storage vessel (Y3E) Subcool heat exchanger Oil separator Solenoid valve, oil accumulator (Y2S) Solenoid valve, oil1 (Y3S) Solenoid valve, oil2 (Y4S) 4‑way valve, main (Y1S)
  • Page 62 12 Technical data Components: RXYQ8~12 Compressor (M1C) Compressor (M2C) Heat exchanger Fan motor (M1F, M2F) Accumulator Expansion valve, main (Y1E) Expansion valve, subcool heat exchanger (Y2E) Expansion valve, storage vessel (Y3E) Subcool heat exchanger Oil separator Solenoid valve, oil accumulator (Y2S) Solenoid valve, oil1 (Y3S) Solenoid valve, oil2 (Y4S) 4‑way valve, main (Y1S)
  • Page 63 12 Technical data Components: RXYQ14~20 Compressor (M1C) Compressor (M2C) Heat exchanger Fan motor (M1F, M2F) Accumulator Expansion valve, main (Y1E) Expansion valve, subcool heat exchanger (Y2E) Expansion valve, storage vessel (Y3E) Subcool heat exchanger Oil separator Solenoid valve, oil accumulator (Y2S) Solenoid valve, oil1 (Y3S) Solenoid valve, oil2 (Y4S) 4‑way valve, main (Y1S)

  • Page 64: Components: Electrical Component Box

    12 Technical data 12.5 Components: Electrical component box 8~12 HP 14~20 HP Main PCB. Terminal block X1M: main terminal block which allows easy connection of field wiring for power supply. Terminal X1M on main PCB: terminal block for transmission wiring. Cable tie mountings: the cable tie mountings allow to fix the field wiring with cable ties to the electrical component box to ensure strain relief.

  • Page 65: Piping Diagram: Outdoor Unit

    12 Technical data 12.6 Piping diagram: Outdoor unit Piping diagram: RYYQ8~12 Piping diagram: RYYQ14~20 (S1NPL) (S1NPH) (S1NPL) (S1NPH) (S1PH) R21T (S1PH) (S2PH) R22T R21T 10-12HP 10-12HP Compressor (M1C) Compressor (M2C) Heat exchanger Compressor (M1C) Fan motor (M1F, M2F) Compressor (M2C) Accumulator Heat exchanger Expansion valve, main (Y1E)
  • Page 66 12 Technical data Piping diagram: RYMQ8~12 Piping diagram: RYMQ14~20 (Y1E) (S1NPL) (S1NPH) (S1NPH) (S1NPL) (S1PH) R21T (S1PH) (S2PH) R21T R22T 10-12HP 10-12HP Compressor (M1C) Compressor (M2C) Heat exchanger Compressor (M1C) Compressor (M2C) Fan motor (M1F, M2F) Heat exchanger Accumulator Expansion valve, main (Y1E) Fan motor (M1F, M2F) Expansion valve, subcool heat exchanger (Y2E) Accumulator...
  • Page 67 12 Technical data Piping diagram: RXYQ8~12 Piping diagram: RXYQ14~20 (S1NPL) (S1NPH) (S1NPH) (S1NPL) (S1PH) (S2PH) (S1PH) R21T R22T R21T 10-12HP 10-12HP Compressor (M1C) Compressor (M2C) Compressor (M1C) Heat exchanger Compressor (M2C) Heat exchanger Fan motor (M1F, M2F) Accumulator Fan motor (M1F, M2F) Expansion valve, main (Y1E) Accumulator Expansion valve, subcool heat exchanger (Y2E)

  • Page 68: Wiring Diagram: Outdoor Unit

    12 Technical data 12.7 Wiring diagram: Outdoor unit Refer to the wiring diagram sticker on the unit. The abbreviations INFORMATION used are listed below: The wiring diagram on the outdoor unit is only for the outdoor unit. For the indoor unit or optional electrical components, refer to the wiring diagram of the indoor unit.
  • Page 69 12 Technical data RYYQ+RYMQ+RXYQ8~20T7Y1B Installer and user reference guide VRV IV system air conditioner 4P370475-1C – 2016.11...
  • Page 70 12 Technical data 10+12 HP Installer and user reference guide RYYQ+RYMQ+RXYQ8~20T7Y1B VRV IV system air conditioner 4P370475-1C – 2016.11...
  • Page 71 12 Technical data RYYQ+RYMQ+RXYQ8~20T7Y1B Installer and user reference guide VRV IV system air conditioner 4P370475-1C – 2016.11...
  • Page 72 12 Technical data 14+16 HP Installer and user reference guide RYYQ+RYMQ+RXYQ8~20T7Y1B VRV IV system air conditioner 4P370475-1C – 2016.11...
  • Page 73 12 Technical data RYYQ+RYMQ+RXYQ8~20T7Y1B Installer and user reference guide VRV IV system air conditioner 4P370475-1C – 2016.11...
  • Page 74 12 Technical data 18+20 HP Installer and user reference guide RYYQ+RYMQ+RXYQ8~20T7Y1B VRV IV system air conditioner 4P370475-1C – 2016.11...
  • Page 75 12 Technical data Printed circuit board (main) Magnetic contactor (A3P, A6P) A2P/A5P Printed circuit board (noise filter) Magnetic relay (A3P, A6P) A3P/A6P Printed circuit board (inv) Magnetic relay (Y3S) (A2P, A5P, A6P) A4P/A7P Printed circuit board (fan) Magnetic relay (Y2S) BS1~BS3 Push button switch (A1P) (mode, set, return) Magnetic relay (Y4S)
  • Page 76 12 Technical data Q1RP Phase reversal detection circuit (A1P) White Resistor Yellow R2,R3 Resistor (A3P, A6P) Connector for optional accessories Resistor (current sensor) (A4P, A7P) X14A Connector (drain pan heater) Resistor (current sensor) (A3P, A6P) X37A Connector (power adapter) Resistor (A3P, A6P) X66A Connector (remote switching cool/heat R313...

  • Page 77: Technical Specifications: Outdoor Unit

    12 Technical data 12.8 Technical specifications: Outdoor unit Technical specifications INFORMATION technical electrical details multi unit combinations, see technical engineering data. Specification 8 HP 10 HP 12 HP 14 HP 16 HP 18 HP 20 HP Casing material Painted galvanised steel Dimensions h×w×d 1685×930×765 mm 1685×1240×765 mm...
  • Page 78 12 Technical data Nominal cooling capacities are based on indoor temperature 27°C DB and 19°C WB, outdoor temperature 35°C DB, equivalent refrigerant piping: 5 m, level difference: 0 m. Nominal cooling capacities are based on indoor temperature 20°C DB, outdoor temperature 7°C DB and 6°C WB, equivalent refrigerant piping: 5 m, level difference: 0 m.

  • Page 79: Capacity Table: Indoor Unit

    12 Technical data 12.9 Capacity table: Indoor unit Total capacity of indoor units needs to be within the specified range. The connection ratio (CR): 50%≤CR≤130%. HP class of 100% 130% outdoor unit minimum CR nominal CR maximum CR 1040 1105 1170 1235 1000...

  • Page 80: For The User

    13 About the system For the user Depending on the type of outdoor unit which is chosen, some About the system functionality will or will not exist. It will be indicated throughout this operation manual when certain features have exclusive model rights The indoor unit part of VRV IV heat pump system can be used for or not.

  • Page 81: Operation

    16 Operation ▪ The fan may keep on running for about 1 minute after the heating CAUTION operation stops. Do not operate the system when using a room fumigation- ▪ The air flow rate may adjust itself depending on the room type insecticide.

  • Page 82: To Operate The System (With Cool/Heat Changeover Remote Control Switch)

    16 Operation Result: The operation lamp lights up and the system starts 16.3.2 To use the dry program (WITHOUT cool/ operating. heat changeover remote control switch) 16.2.5 To operate the system (WITH cool/heat To start changeover remote control switch) 1 Press the operation mode selector button on the user interface several times and select (program dry operation).

  • Page 83: Setting The Master User Interface

    16 Operation Indoor unit master allocation is determined as follows in special Ceiling suspended units cases: Wall-mounted units Case Description VRV DX indoor unit The operation mode is always forced by combined with Hydrobox the master user interface of the VRV DX unit indoor unit.

  • Page 84: 17 Energy Saving And Optimum Operation

    17 Energy saving and optimum operation Type Description 17.1 Available main operation methods Group control system One user interface controls up to 16 Basic indoor units. All indoor units are equally set. The refrigerant temperature is fixed independent from the situation. It corresponds to the standard operation which is known and can be Two user interface control Two user interfaces control one indoor...

  • Page 85: Maintenance After A Long Stop Period

    18 Maintenance and service CAUTION NOTICE Pay attention to the fan. In Europe, the greenhouse gas emissions of the total refrigerant charge in the system (expressed as tonnes It is dangerous to inspect the unit while the fan is running. -equivalent) is used to determine the maintenance Be sure to turn off the main switch before executing any intervals.

  • Page 86: Recommended Maintenance And Inspection Cycles

    19 Troubleshooting 18.4.3 Recommended maintenance and NOTICE inspection cycles ▪ The table indicates main components. Refer to your maintenance and inspection contract for more details. Be aware that the mentioned maintenance and replacement cycles ▪ The table indicates recommended intervals do not relate to the warranty period of the components.

  • Page 87: Error Codes: Overview

    19 Troubleshooting Malfunction Measure Main code Contents The system operates ▪ Check if air inlet or outlet of outdoor or Electronic expansion valve malfunction (outdoor) but cooling or heating indoor unit is not blocked by obstacles. Discharge temperature malfunction (outdoor) is insufficient.

  • Page 88: Symptoms That Are Not System Malfunctions

    19 Troubleshooting ▪ Immediately after the cooling operation stops and if the room 19.2 Symptoms that are NOT system temperature and humidity are low. This is because warm malfunctions refrigerant gas flows back into the indoor unit and generates steam. The following symptoms are NOT system malfunctions: 19.2.7 Symptom: White mist comes out of a unit...

  • Page 89: Symptom: The Display Shows "88

    19.2.17 Symptom: The inside of an outdoor unit is Field supply warm even when the unit has stopped Equipment not made by Daikin that can be combined with product according instructions This is because the crankcase heater is warming the compressor so accompanying documentation.
  • Page 92 4P370475-1C 2016.11...

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