Daikin VRV IV+ RXYTQ8U7YF Installer And User Reference Manual
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Daikin VRV IV+ RXYTQ8U7YF Installer And User Reference Manual

Heat pump for high ambient temperatures
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Installer and user
reference guide
VRV IV+ heat pump for high ambient temperatures
RXYTQ8U7YF
RXYTQ10U7YF
RXYTQ12U7YF
Installer and user reference guide
RXYTQ14U7YF
English
VRV IV+ heat pump for high ambient temperatures
RXYTQ16U7YF

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Summary of Contents for Daikin VRV IV+ RXYTQ8U7YF

  • Page 1 Installer and user reference guide VRV IV+ heat pump for high ambient temperatures RXYTQ8U7YF RXYTQ10U7YF RXYTQ12U7YF Installer and user reference guide RXYTQ14U7YF English VRV IV+ heat pump for high ambient temperatures RXYTQ16U7YF...

  • Page 2: Table Of Contents

    Table of contents 6.4.4 To connect the refrigerant piping to the outdoor unit ... 19 Table of contents 6.4.5 To connect the multi connection piping kit ....20 6.4.6 Multiple outdoor units: Knockout holes ......20 6.4.7 To connect the refrigerant branching kit ...... 20 6.4.8 To protect against contamination.........

  • Page 3: General Safety Precautions

    1 General safety precautions 10.1 Overview: Troubleshooting............42 19.2.6 Symptom: White mist comes out of a unit (Indoor unit) ................59 10.2 Solving problems based on error codes........42 19.2.7 Symptom: White mist comes out of a unit (Indoor 10.3 Error codes: Overview...............

  • Page 4: For The User

    (on top of the ▪ This appliance can be used by children aged from 8 years and instructions described in the Daikin documentation). above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been...

  • Page 5: Installation Site

    1 General safety precautions 1.3.2 Installation site NOTICE After all the piping has been connected, make sure there is ▪ Provide sufficient space around the unit for servicing and air no gas leak. Use nitrogen to perform a gas leak detection. circulation.

  • Page 6: Water

    2 About the documentation WARNING CAUTION The ambient temperature inside the unit can get much When connecting the power supply, the earth connection higher than that of the room, e.g. 70°C. In case of a brine must be made before the current-carrying connections are leak, hot parts inside the unit can create a hazardous established.

  • Page 7: For The Installer

    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 extranet (authentication required). For the installer About the box...

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

    4 About the units and options 8 HP 10~16 HP Accessory pipes (mm) Øa Øb Liquid pipe ▪ Front connection ID Øb 12.7 12.7 ID Øa ▪ Bottom connection ID Øb ID Øa To remove the transportation stay Only for 14+16 HP NOTICE If the unit is operated with the transportation stay attached, abnormal vibration or noise may be generated.

  • Page 9: Identification Label: Outdoor Unit

    4 About the units and options Identification label: Outdoor unit System layout Location NOTICE 8 HP 10~16 HP Design of the system must not be done at temperatures below –15°C. INFORMATION Not all combinations of indoor units are allowed, for guidance, see "4.5.2 ...

  • Page 10: Possible Options For The Outdoor Unit

    5 Preparation Possible standard combinations of outdoor units External control adaptor (DTA104A61/62) To instruct specific operation with an external input coming from a INFORMATION central control the external control adaptor can be used. Instructions U-series units cannot share the same refrigerant circuit (group or individual) can be instructed for low noise operation and with T-series units.

  • Page 11: Additional Installation Site Requirements Of The Outdoor Unit In Cold Climates

    5 Preparation NOTICE Install the outdoor unit away from direct sea winds. This is a class A product. In a domestic environment this Example: Behind the building. product may cause radio interference in which case the user may be required to take adequate measures. NOTICE The equipment described in this manual may cause electronic noise generated from radio-frequency energy.

  • Page 12: Securing Safety Against Refrigerant Leaks

    5 Preparation INFORMATION For instructions on how to install the snow cover, contact your dealer. NOTICE When installing the snow cover, do NOT obstruct the air flow of the unit. NOTICE Direction of the refrigerant flow Room where refrigerant leak has occurred (outflow of all When operating the unit in a low outdoor ambient the refrigerant from the system) temperature with high humidity conditions, make sure to...

  • Page 13: Preparing Refrigerant Piping

    5 Preparation Indoor branch kit Formula F/G≤H Outdoor multi connection kit Total volume of refrigerant in the refrigerant system A, B, C: Piping between outdoor unit and (first) refrigerant branch kit Size (m ) of smallest room in which there is an indoor unit installed Choose from the following table in accordance with the outdoor unit Maximum concentration level (kg/m...

  • Page 14: To Select Refrigerant Branch Kits

    5 Preparation Outdoor unit Indoor unit capacity index 2 pipes Main pipes 290≤x<640 KHRQ22M64T Increase if the equivalent piping length is ≥90 m First refrigerant branch kit ≥640 KHRQ22M75T Indoor unit ▪ Concerning refnet headers, choose from the following table in Size up accordance with the total capacity of all the indoor units connected HP class...
  • Page 15 5 Preparation System setup Actual piping 165 m/135 m length Example 1.1 Example Description Example 1.1 Single outdoor ▪ unit 8: a+b+c+d+e+f+g+p≤165 m Branch with refnet joint Example 1.2 ▪ unit 6: a+b+h≤165 m ▪ unit 8: a+i+k≤165 m Example 1.3 ▪ unit 8: a+i≤165 m Example 1.2 Single outdoor Example 2.1 Branch with refnet joint and refnet header...

  • Page 16: Multiple Outdoor Units: Possible Layouts

    5 Preparation Not allowed (oil remains in piping) However, extension is possible if all below conditions are met. In this Allowed case limitation can be extended up to 90 m. ▪ To avoid the risk of oil retention to the outmost outdoor unit, always connect the stop valve and the piping between outdoor units as shown in the 4 correct possibilities of the figure below.

  • Page 17: Preparing Electrical Wiring

    6 Installation Selection and sizing of the wiring should be done in accordance with NOTICE the applicable legislation based on the information mentioned in the There are restrictions on the refrigerant pipe connection table below. order between outdoor units during installation in case of a multiple outdoor unit system.

  • Page 18: Opening The Units

    6 Installation NOTICE Opening the units When closing the electrical component box cover, make sure that the sealing material on the lower back side of the 6.2.1 To open the outdoor unit cover is NOT caught and bend towards the inside. DANGER: RISK OF ELECTROCUTION DANGER: RISK OF BURNING To gain access to the unit, front plates need to be opened as follows:...

  • Page 19: Connecting The Refrigerant Piping

    6 Installation ▪ Fasten the unit in place using four foundation bolts M12. It is best 6.4.2 About connecting the refrigerant piping to screw in the foundation bolts until their length remains 20  mm Before connecting the refrigerant piping, make sure the outdoor and above the foundation surface.

  • Page 20: To Connect The Multi Connection Piping Kit

    6 Installation NOTICE 6.4.6 Multiple outdoor units: Knockout holes Precautions when connecting field piping. Add brazing Connection Description material as shown in the figure. Front connection Remove the front plate knockout holes to ≤Ø25.4 >Ø25.4 connect. NOTICE ▪ Be sure to use the supplied accessory pipes when Bottom connection Remove the knockout holes on the bottom carrying out piping work in the field.

  • Page 21: To Braze The Pipe End

    6 Installation Service port and service port cover Stop valve Close the areas marked with " ". (When the piping is Field piping connection routed from the front panel.) Dust cap ▪ Only use clean pipes. ▪ Hold the pipe end downwards when removing burrs. ▪...

  • Page 22: To Remove The Pinched Pipes

    6 Installation 6.4.11 To remove the pinched pipes WARNING WARNING Any gas or oil remaining inside the stop valve may blow off the pinched piping. Failure to observe the instructions in procedure below properly may result in property damage or personal injury, Never remove the pinched piping by brazing.

  • Page 23: Checking Refrigerant Piping: General Guidelines

    6 Installation If there is a possibility of moisture being present in the refrigerant NOTICE piping (for example, water may have entered the piping), first carry The connections to the indoor units and all indoor units out the vacuum drying procedure below until all moisture has been should also be leak and vacuum tested.

  • Page 24: To Insulate The Refrigerant Piping

    6 Installation 4 Depending on whether you want to immediately charge NOTICE refrigerant through the refrigerant charge port or first pre-charge If the power of some units is turned off, the charging a portion of refrigerant through the liquid line, either open the procedure cannot be finished properly.
  • Page 25 6 Installation NOTICE The refrigerant charge of the system must be less than 100  kg. This means that in case the calculated total refrigerant charge is equal to or more than 95 kg you must divide your multiple outdoor system into smaller independent systems, each containing less than 95 ...

  • Page 26: 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 27. Pre-charging refrigerant Step 1 p < p > Calculate additional refrigerant charge amount: R (kg) Step 2 R410A • Open valves C and B to the liquid line •...

  • Page 27: To Charge Refrigerant

    6 Installation Charging refrigerant << Continuation of previous page R>Q Step 4 p < p > • Connect valve A to the refrigerant charge port (d) • Open all outdoor unit stop valves R410A Step 5 Proceed with manual charge Step 6 Activate field setting [2-20]=1 Unit will start manual refrigerant charging operation.

  • Page 28: Step 6: To Manually Charge Refrigerant

    6 Installation 3 Activate outdoor unit setting [2‑20]=1 to start manual refrigerant INFORMATION charge mode. Refer to "7.2.8  Mode 2: Field settings"  on If the total additional refrigerant amount was reached in page 35 for details. step  3 (by pre-charging only), record the amount of Result: The unit will start operation.

  • Page 29: Checks After Charging Refrigerant

    6 Installation Install power cables at least 1 metre away from televisions or radios Code Cause Solution to prevent interference. Depending on the radio waves, a distance of Other — Close valve A 1 metre may not be sufficient. malfunction immediately. Confirm the code malfunction code and take WARNING...

  • Page 30: About The Electrical Wiring

    6 Installation ▪ When passing electrical wiring through the knockout holes. prevent damage to the wires by wrapping the wiring with protective tape, putting the wires through field supplied protective wire conduits at that location, or install suitable field supplied wire nipples or rubber bushings into the knockout holes.

  • Page 31: To Connect The Transmission Wiring

    6 Installation 8 HP 10~16 HP 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 32: To Connect The Power Supply

    7 Configuration 8 HP 10~16 HP The power supply MUST be clamped to the plastic bracket using field supplied clamp material to prevent external force being applied to the terminal. The green and yellow striped wire MUST be used for earthing only.

  • Page 33: Making Field Settings

    7 Configuration To access you can remove the front inspection cover of the front Making field settings plate (see figure). Now you can open the inspection cover of the electrical component box front plate (see figure). You can see the 7.2.1 About making field settings three push buttons and the three 7‑segment displays and DIP...

  • Page 34: To Use Mode 1

    7 Configuration When above situation cannot be confirmed after 12  min, the What malfunction code can be checked on the indoor unit user interface Changing and accessing Once mode 2 is selected (push BS1 for and the outdoor unit 7‑segment display. Solve the malfunction code the setting in mode 2 more than 5 seconds), you can select accordingly.

  • Page 35: Mode 2: Field Settings

    7 Configuration It can be convenient to check if the total number of outdoor units [1‑0] Description which are installed matches the total number of outdoor units which No indication Undefined situation. are recognised by the system. In case there is a mismatch, it is Outdoor unit is master unit.
  • Page 36 7 Configuration For more information and advice about the impact of these settings, [2‑22] Description "7.3 Energy saving and optimum operation" on page 37. 0 (default) Deactivated [2‑9] Level 1 Level 3<Level 2<Level 1 target temperature during heating operation. Level 2 Level 3 [2‑9] target (°C) 0 (default)

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

    7 Configuration Cable (EKPCCAB) If the system needs to be running under power consumption Outdoor unit main PCB limitation conditions when an external signal is sent to the unit, this setting defines the level power consumption limitation that will be Energy saving and optimum applied for step 2.

  • Page 38: Available Comfort Settings

    7 Configuration Mild [2‑8] target (°C) Overshoot (during heating operation) or undershoot (during cooling operation) is allowed compared to the requested refrigerant temperature, in order to achieve the required room temperature very fast. The overshoot is not allowed from the start up moment. The start up occurs under the condition which is defined by the operation mode above.

  • Page 39: 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 40: Commissioning

    8 Commissioning Field wiring Commissioning Be sure that the field wiring has been carried out according to the instructions described in the chapter Overview: Commissioning "6.8  Connecting the electrical wiring"  on page  according to the wiring diagrams and according to the After installation and once the field settings are defined, the installer applicable legislation.

  • Page 41: About The Test Run

    9 Maintenance and service 5 Check the test operation results on the outdoor unit 7‑segment About the test run display. The procedure below describes the test operation of the complete Completion Description system. This operation checks and judges following items: Normal completion No indication on the 7‑segment display (idle).

  • Page 42: To Prevent Electrical Hazards

    10 Troubleshooting DANGER: RISK OF BURNING 9.3.1 To use vacuum mode 1 When the unit is at standstill, set the unit in [2‑21]=1. NOTICE: Risk of electrostatic discharge Result: When confirmed, the indoor and outdoor unit expansion Before performing any maintenance or service work, touch valves will fully open.

  • Page 43: Error Codes: Overview

    10 Troubleshooting 10.3 Error codes: Overview In case other error codes appear, contact your dealer. Main code Sub code Cause Solution Master Slave 1 Slave 2 Earth leakage detector activated Restart the unit. If the problem reoccurs, contact your dealer. Earth leakage detector malfunction: Check connection on PCB or actuator.
  • Page 44 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 (X19A) Discharge temperature sensor Check connection on PCB or actuator. malfunction (R21T): short circuit - A1P (X19A) Discharge temperature sensor Check connection on PCB or actuator.
  • Page 45 10 Troubleshooting Main code Sub code Cause Solution Master Slave 1 Slave 2 Reversed power supply phase Correct phase order. malfunction Reversed power supply phase Correct phase order. malfunction INV1 voltage power shortage Check if power supply is within range. INV1 power phase loss Check if power supply is within range.

  • Page 46: 11 Disposal

    11 Disposal Main code Sub code Cause Solution Master Slave 1 Slave 2 — Automatic charging nearly finished Prepare for autocharge stopping. — Automatic charging finished Finish autocharge mode. Leak detection function related — Unit is not prepared to execute leak Refer to requirements to be able to detection operation execute leak detection operation.

  • Page 47: Technical Data

    ▪ A subset of the latest technical data is available on the regional a≥10 mm a≥50 mm — Daikin website (publicly accessible). b≥300 mm b≥100 mm ▪ The full set of latest technical data is available on the Daikin c≥10 mm c≥50 mm extranet (authentication required). d≥500 mm d≥500 mm 12.1 Overview: Technical data e≥20 mm...

  • Page 48: Piping Diagram: Outdoor Unit

    12 Technical data Piping diagram: RXYTQ10+12 12.3 Piping diagram: Outdoor unit Piping diagram: RXYTQ8 (S1NPL) (S1NPH) (S1NPL) (S1NPH) (S1PH) R21T (S1PH) R21T 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 49 12 Technical data Piping diagram: RXYTQ14+16 (S1NPL) (S1NPH) (S1PH) (S2PH) R22T R21T 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 (Y4E) Subcool heat exchanger Oil separator Solenoid valve, oil accumulator (Y2S) Solenoid valve, oil1 (Y3S)

  • Page 50: Wiring Diagram: Outdoor Unit

    12 Technical data E1HC Crankcase heater 12.4 Wiring diagram: Outdoor unit Drain pan heater (option) Refer to the wiring diagram sticker on the unit. The abbreviations F1U, F2U Fuse (T 3.15 A / 250 V) used are listed below: (A1P) INFORMATION Field fuse The wiring diagram on the outdoor unit is only for the F101U Fuse...
  • Page 51 12 Technical data Z*F (A2P, Noise filter (with surge absorber) Thermistor (heat exchanger, de-icer) A5P) R8T, R9T Thermistor (M1C, M2C body) Connectors for optional accessories: R21T, R22T Thermistor (M1C, M2C discharge) X10A Connector (drainpan heater) S1NPH Pressure sensor (high) X37A Connector (power adapter) S1NPL Pressure sensor (low)

  • Page 52: For The User

    13 About the system For the user NOTICE About the system Never inspect or service the unit by yourself. Ask a The indoor unit part of VRV IV heat pump system can be used for qualified service person to perform this work. heating/cooling applications.

  • Page 53: Operating The System

    16 Operation 16.2.4 To operate the system (WITHOUT cool/ 16.2 Operating the system heat changeover remote control switch) 16.2.1 About operating the system 1 Press the operation mode selector button on the user interface several times and select the operation mode of your choice. ▪...

  • Page 54: Using The Dry Program

    16 Operation 16.3 Using the dry program 16.4 Adjusting the air flow direction Refer to the operation manual of the user interface. 16.3.1 About the dry program 16.4.1 About the air flow flap ▪ The function of this program is to decrease the humidity in your room with minimal temperature decrease (minimal room cooling).

  • Page 55: About Control Systems

    17 Energy saving and optimum operation ▪ Do NOT place items under the indoor unit, as they may be Result: The display showing (change-over under centralised control) of all slave user interfaces connected to the damaged by water. same outdoor unit flashes. ▪...

  • Page 56: Maintenance After A Long Stop Period

    18 Maintenance and service Global warming potential (GWP) value: 2087.5 WARNING Never replace a fuse with a fuse of a wrong ampere ratings NOTICE or other wires when a fuse blows out. Use of wire or In Europe, the greenhouse gas emissions of the total copper wire may cause the unit to break down or cause a refrigerant charge in the system (expressed as tonnes CO fire.

  • Page 57: 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 58: 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 59: 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 60: Symptom: The Display Shows "88

    Field supply 19.2.18 Symptom: Hot air can be felt when the Equipment NOT made by Daikin that can be combined with indoor unit is stopped product according instructions accompanying documentation.
  • Page 64 4P561157-1 2018.09...

This manual is also suitable for:

Vrv iv+ rxytq10u7yfVrv iv+ rxytq12u7yfVrv iv+ rxytq14u7yfVrv iv+ rxytq16u7yf

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