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Summary of Contents for Daikin RXYTQ8T7YF
- Page 1 Installer and user reference guide VRV IV system air conditioner RXYTQ8T7YF RXYTQ10T7YF RXYTQ12T7YF Installer and user reference guide RXYTQ14T7YF English VRV IV system air conditioner RXYTQ16T7YF...
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Page 2: Table Of Contents
Table of Contents 6.4.6 Multiple outdoor units: Knockout holes ......19 Table of Contents 6.4.7 To connect the refrigerant branching kit ...... 19 6.4.8 To protect against contamination......... 19 6.4.9 To braze the pipe end ..........20 6.4.10 Using the stop valve and service port ......20 1 General safety precautions 6.4.11 To remove the pinched pipes........ -
Page 3: General Safety Precautions
1 General safety precautions 10.3 Error codes: Overview............... 41 19.2.5 Symptom: The fan direction does not correspond to the setting ..............68 11 Disposal 19.2.6 Symptom: White mist comes out of a unit (Indoor unit) ................68 12 Technical data 19.2.7 Symptom: White mist comes out of a unit (Indoor 12.1... -
Page 4: For The User
Indicates useful tips or additional information. Make sure installation, testing and applied materials comply with applicable legislation (on top of the instructions described in the Daikin documentation). For the user CAUTION ▪ If you are not sure how to operate the unit, contact your installer. -
Page 5: Refrigerant
1 General safety precautions ▪ In places where there is machinery that emits electromagnetic ▪ Charge the liquid refrigerant as follows: waves. Electromagnetic waves may disturb the control system, Then and cause malfunction of the equipment. A siphon tube is present Charge with the cylinder upright. -
Page 6: Electrical
2 About the documentation 1.3.6 Electrical NOTICE Precautions when laying power wiring: DANGER: RISK OF ELECTROCUTION ▪ Do not connect wiring of different thicknesses to the ▪ Turn OFF all power supply before removing the power terminal block (slack in the power wiring may switch ... -
Page 7: For The Installer
Latest revisions of the supplied documentation may be available on the regional Daikin website or via your dealer. ▪ Detailed step-by-step instructions and background information for basic and advanced usage The original documentation is written in English. All other languages are translations. -
Page 8: Accessory Pipes: Diameters
4 About the units and options Installation information sticker ▪ With which indoor units and options you can combine the outdoor Piping accessory bag units. ▪ Which outdoor units have to be used as standalone units, and Accessory pipes: Diameters which outdoor units can be combined. -
Page 9: Combining Units And Options
5 Preparation INFORMATION Description Model name Refnet joint KHRQ22M20T Not all combinations of indoor units are allowed, for guidance, see "4.5.2 Possible combinations of indoor KHRQ22M29T9 units" on page 9. KHRQ22M64T KHRQ22M75T For the selection of the optimal branching kit, please refer to "5.3.3 To select refrigerant branch kits" on page 13. -
Page 10: Additional Installation Site Requirements Of The Outdoor Unit In Cold Climates
5 Preparation ▪ In places where there is machinery that emits electromagnetic ▪ Be sure that the air inlet of the unit is not positioned towards the waves. Electromagnetic waves may disturb the control system, main wind direction. Frontal wind will disturb the operation of the and cause malfunction of the equipment. -
Page 11: Securing Safety Against Refrigerant Leaks
5 Preparation This system uses R410A as refrigerant. R410A itself is an entirely safe non-toxic, non-combustible refrigerant. Nevertheless care must be taken to ensure that air conditioning facilities are installed in a room which is sufficiently large. This assures that the maximum concentration level of refrigerant gas is not exceeded, in the unlikely event of major leak in the system and this in accordance to the local applicable regulations and standards. -
Page 12: Preparing Refrigerant Piping
5 Preparation ▪ Foreign materials inside pipes (including oils for fabrication) must Where there are no smaller room divisions: be ≤30 mg/10 m. ▪ Temper grade: use piping with temper grade in function of the pipe diameter as listed in table below. Pipe Ø... -
Page 13: To Select Refrigerant Branch Kits
5 Preparation Example: ▪ In case the required pipe sizes (inch sizes) are not available, it is also allowed to use other diameters (mm sizes), taken the ▪ Downstream capacity for E=capacity index of unit 1 following into account: ▪ Downstream capacity for D=capacity index of unit 1+capacity ▪... -
Page 14: About The Piping Length
5 Preparation 5.3.4 About the piping length Example Description Example 2.3 Multi outdoor Make sure to perform the piping installation within the range of the Branch with refnet maximum allowable pipe length, allowable level difference and header allowable length after branching as indicated below. Definitions Term Definition... -
Page 15: Multiple Outdoor Units: Possible Layouts
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 16: Preparing Electrical Wiring
6 Installation Preparing electrical wiring 5.4.1 Safety device requirements 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 earth leakage protector in accordance with the applicable legislation. Selection and sizing of the wiring should be done in accordance with the applicable legislation based on the information mentioned in the table below. -
Page 17: Opening The Units
6 Installation ▪ Connecting the electrical wiring NOTICE When closing the electrical component box cover, make Opening the units sure that the sealing material on the lower back side of the cover is not caught and bend towards the inside. 6.2.1 To open the outdoor unit DANGER: RISK OF ELECTROCUTION... -
Page 18: Connecting The Refrigerant Piping
6 Installation ▪ Routing and connecting the refrigerant piping to the outdoor unit ▪ Protecting the outdoor unit against contamination ▪ Connecting the refrigerant piping to the indoor units (see the installation manual of the indoor units) NOTICE ▪ Connecting the multi-connection piping kit ▪... -
Page 19: 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 Bottom connection Remove the knockout holes on the bottom ▪... -
Page 20: To Braze The Pipe End
6 Installation Close the areas marked with " ". (When the piping is routed from the front panel.) Service port Stop valve cover ▪ Only use clean pipes. Hexagon hole ▪ Hold the pipe end downwards when removing burrs. Shaft Seal ▪... -
Page 21: To Remove The Pinched Pipes
6 Installation Valve B 3 Recover gas and oil from the pinched piping by using a recovery unit. CAUTION Do not vent gases into the atmosphere. To handle the service port 4 When all gas and oil is recovered from the pinched piping, ▪... -
Page 22: Checking Refrigerant Piping: General Guidelines
6 Installation Method 1: Before power ON 6.5.3 Checking refrigerant piping: Setup If the system has not yet been powered on, no special action is p < p > required to perform the leak test and the vacuum drying. Method 2: After power ON If the system has already been powered on, activate setting [2‑21] (refer to "7.2.4 ... -
Page 23: To Perform Vacuum Drying
6 Installation 6.5.5 To perform vacuum drying NOTICE The connections to the indoor units and all indoor units should also be leak and vacuum tested. Keep, if existing, all (field supplied) field valves to the indoor units open as well. Leak test and vacuum drying should be done before the power supply is set to the unit. -
Page 24: About Charging Refrigerant
6 Installation NOTICE Piping length Total indoor unit A parameter (kg) capacity CR 8 HP 10+12 HP 14+16 HP In case of maintenance and the system (outdoor unit+field piping+indoor units) does not contain any refrigerant any >30 m 50%≤CR≤70% more (e.g., after refrigerant reclaim operation), the unit has 70%<CR≤85% to be charged with its original amount of refrigerant (refer 85%<CR≤105%... - Page 25 6 Installation 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 • Execute pre-charging amount: Q (kg) R<Q R>Q Step 3a Refrigerant overcharge happened, recover Step 3b refrigerant to reach R=Q...
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Page 26: To Charge Refrigerant
6 Installation p < p > 6.7.5 To charge refrigerant Follow the steps as described below. Pre-charging refrigerant 1 Calculate the additional amount of refrigerant to be added using R410A the formula mentioned in "6.7.3 To determine the additional refrigerant amount" on page 24. -
Page 27: Error Codes When Charging Refrigerant
6 Installation INFORMATION WARNING The manual refrigerant charge operation will automatically ▪ ONLY use copper wires. stop within 30 minutes. If charging is not completed after ▪ Make sure the field wiring complies with the applicable 30 minutes, perform the additional refrigerant charging legislation. -
Page 28: Field Wiring: Overview
6 Installation ▪ Maximum number of independent interconnectable systems: 10. NOTICE ▪ Up to 16 branches are possible for unit-to-unit cabling. No Only applicable if the power supply is three‑phase, and the branching is allowed after branching (see figure below). compressor has an ON/OFF starting method. -
Page 29: To Connect The Transmission Wiring
6 Installation 8 HP 10~16 HP Screw size Tightening torque (N•m) M3.5 (A1P) 0.80~0.96 In case of single outdoor unit installation F2 Q1 Q2 TO IN/D UNIT TO OUT/D UNIT TO MULTI UNIT F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 Outdoor unit PCB (A1P) -
Page 30: To Route And Fix The Power Supply
6 Installation 6.8.8 To route and fix the power supply Screw size Tightening torque (N•m) M8 (Power terminal block) 5.5~7.3 NOTICE M8 (Ground) When routing earth wires, secure clearance of 25 mm or more away from compressor lead wires. Failure to observe NOTICE this instruction properly may adversely affect correct Recommendations when connecting the earth wire:... -
Page 31: Configuration
7 Configuration Mode 1 and 2 Configuration Mode Description Mode 1 Mode 1 can be used to monitor the current Overview: Configuration situation of the outdoor unit. Some field setting (monitoring contents can be monitored as well. This chapter describes what you have to do and know to configure settings) the system after it is installed. -
Page 32: To Access Mode 1 Or 2
7 Configuration Main PCB with 3 7‑segment displays and 3 push buttons INFORMATION Electrical component box service cover If you get confused in the middle of the process, push BS1. Operate the switches and push buttons with an insulated stick (such Then it returns to idle situation (no indication on 7‑segment as a closed ball-point pen) to avoid touching of live parts. -
Page 33: Mode 1: Monitoring Settings
7 Configuration Low noise operation reduces the sound generated by the unit What compared to nominal operating conditions. Changing the value of the ▪ Once mode 2 is selected (push BS1 selected setting in mode 2 for more than 5 seconds) you can [1‑1] Description select the wanted setting. -
Page 34: Mode 2: Field Settings
7 Configuration ▪ [1‑19]: The 3rd last malfunction code. [2‑9] target (°C) When the latest malfunction codes were reset by accident on an indoor unit user interface, they can be checked again through this For more information and advice about the impact of these settings, monitoring settings. - Page 35 7 Configuration [2‑31] By changing this setting, you activate the automatic low noise operation function of the unit and define the level of operation. Power consumption limitation level (step 2) via the external control Depending on the chosen level, the noise level will be lowered. The adaptor (DTA104A61/62).
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Page 36: To Connect The Pc Configurator To The Outdoor Unit
7 Configuration Automatic For more information and advice about the impact of these settings, "7.3 Energy saving and optimum operation" on page 36. The refrigerant temperature is set depending on the outdoor ambient conditions. As such adjusting the refrigerant temperature to match [2‑82] the required load (which is also related to the outdoor ambient Heating comfort setting. -
Page 37: Example: Automatic Mode During Cooling
7 Configuration ▪ In case of cooling operation the evaporating temperature is allowed to go down to 3°C on temporary base depending on the The original refrigerant temperature target, which is defined by the situation. operation method (see above) is kept without any correction, unless for protection control. -
Page 38: Example: Automatic Mode During Heating
8 Commissioning Room temperature evolution: Room temperature evolution: Indoor unit set temperature Indoor unit set temperature Operation start Operation start Operating time Operating time Mild Mild Quick Quick Powerful Powerful 7.3.4 Example: Automatic mode during heating Commissioning 100% Overview: Commissioning After installation and once the field settings are defined, the installer is obliged to verify correct operation. -
Page 39: Checklist Before Commissioning
8 Commissioning INFORMATION Damaged equipment Note that during the first running period of the unit, Check the inside of the unit on damaged components or required power input may be higher. This phenomenon squeezed pipes. originates from the compressor that requires a 50 hour run Refrigerant leak elapse before reaching smooth operation and stable power Check the inside of the unit on refrigerant leakage. -
Page 40: Correcting After Abnormal Completion Of The Test Run
9 Maintenance and service NOTICE Maintenance and service Be sure to turn on the power 6 hours before operation in order to have power running to the crankcase heater and NOTICE to protect the compressor. Maintenance must be done by an authorised installer or service agent. -
Page 41: About Service Mode Operation
10 Troubleshooting Pay attention to the fan. It is dangerous to inspect the unit while the Troubleshooting fan is running. Make sure to turn off the main switch and to remove the fuses from the control circuit located in the outdoor unit. 10.1 Overview: Troubleshooting About service mode operation... - Page 42 10 Troubleshooting Main code Sub code Cause Solution Master Slave 1 Slave 2 Discharge temperature too high ▪ Open stop valves. (R21T/R22T): ▪ Check refrigerant amount+recharge ▪ Stop valve closed unit. ▪ Refrigerant shortage Compressor casing temperature too ▪ Open stop valves. high (R8T): ▪...
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Page 43: Vrv Iv System Air Conditioner 4P388989-1B - 2016.02
10 Troubleshooting Main code Sub code Cause Solution Master Slave 1 Slave 2 Transmission outdoor unit - inverter: Check connection. INV1 transmission trouble - A1P (X20A, X28A, X40A) Transmission outdoor unit - inverter: Check connection. FAN1 transmission trouble - A1P (X20A, X28A, X40A) Transmission outdoor unit - inverter: Check connection. -
Page 44: 11 Disposal
11 Disposal Main code Sub code Cause Solution Master Slave 1 Slave 2 Auto address malfunction Check if transmission wired unit (inconsistency) amount matches with powered unit amount (by monitor mode) or wait till initialisation is finished. Stop valve closed or wrong (during Open stop valves. -
Page 45: Technical Data
12 Technical data Technical data Latest information can be found in the technical engineering data. 12.1 Overview: Technical data This chapter contains information about: ▪ Dimensions ▪ Service space ▪ Components ▪ Piping diagram ▪ Wiring diagram ▪ Technical specifications ▪... -
Page 46: 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 47: Components: Outdoor Unit
12 Technical data 12.4 Components: Outdoor unit Components: RXYTQ8 Compressor (M1C) Heat exchanger Fan motor (M1F) Accumulator Expansion valve, main (Y1E) Expansion valve, subcool heat exchanger (Y2E) Subcool heat exchanger Oil separator Solenoid valve, oil accumulator (Y2S) Solenoid valve, oil1 (Y3S) 4‑way valve, main (Y1S) Electrical component box Service port, refrigerant charge... - Page 48 12 Technical data Components: RXYTQ10+12 Compressor (M1C) Heat exchanger Fan motor (M1F, M2F) Accumulator Expansion valve, main (Y1E) Expansion valve, subcool heat exchanger (Y2E) Subcool heat exchanger Oil separator Solenoid valve, oil accumulator (Y2S) Solenoid valve, oil1 (Y3S) 4‑way valve, main (Y1S) Electrical component box Service port, refrigerant charge Stop valve, liquid...
- Page 49 12 Technical data Components: RXYTQ14+16 Compressor (M1C) Compressor (M2C) Heat exchanger Fan motor (M1F, M2F) Accumulator Expansion valve, main (Y1E) Expansion valve, subcool heat exchanger (Y2E) Subcool heat exchanger Oil separator Solenoid valve, oil accumulator (Y2S) Solenoid valve, oil2 (Y4S) Solenoid valve, oil1 (Y3S) 4‑way valve, main (Y1S) Electrical component box...
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Page 50: Components: Electrical Component Box
12 Technical data 12.5 Components: Electrical component box 8 HP 10+12 HP 14+16 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. -
Page 51: Piping Diagram: Outdoor Unit
12 Technical data 12.6 Piping diagram: Outdoor unit Piping diagram: RXYTQ8 Service port Piping diagram: RXYTQ14+16 (S1NPL) (S1NPH) (S1NPL) (S1NPH) (S1PH) R21T (S1PH) (S2PH) R22T R21T Compressor (M1C) Heat exchanger Fan motor (M1F) Compressor (M1C) Accumulator Compressor (M2C) Expansion valve, main (Y1E) Heat exchanger Expansion valve, subcool heat exchanger (Y2E) Subcool heat exchanger... -
Page 52: 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 53 12 Technical data DS1, DS2 DIP switch (A1P) Terminal E1HC Crankcase heater Protective earth (screw) F1U, F2U Fuse (250 V, 3, 15 A, T) (A1P) Black Field fuse Blue F101U Fuse (A4P) Green F400U Fuse (A2P) F410U~F412U Fuse (A2P) White Pilot lamp (A1P) (service monitor - green) Note 1 This wiring diagram applies only to the Magnetic relay (A3P)
- Page 54 12 Technical data RXYTQ10+12 Power supply 3N~ 380-415 V 50 Hz 3N~ 400 V 60 Hz Q1DI F3U X23A Q1RP (Note 7) X101A SEG1 SEG2 SEG3 X22A X41A X10A X11A X12A X15A P> S1PH X21A X403A 1 2 3 4 1 2 3 4 E1HC X37A...
- Page 55 12 Technical data Connector Terminal Protective earth (screw) Note 1 This wiring diagram applies only to the outdoor unit. Note 3 When using the optional adapter, refer to the installation manual of the optional adapter. Note 4 For connection wiring to indoor-outdoor transmission F1-F2. Note 5 How to use BS1~BS3 switch.
- Page 56 12 Technical data RXYTQ14+16 Power supply 3N~ 380-415 V 50 Hz 3N~ 400 V 60 Hz Q1DI F3U X23A Q1RP X101A L3A NA SEG1 SEG2 SEG3 X22A X402A X402A X41A X10A X11A X12A X15A F400U F400U P> S1PH X21A L2B L3B X403A X403A 1 2 3 4...
- Page 57 12 Technical data Connector Terminal Protective earth (screw) Note 1 This wiring diagram applies only to the outdoor unit. Note 3 When using the optional adapter, refer to the installation manual of the optional adapter. Note 4 For connection wiring to indoor-outdoor transmission F1-F2. Note 5 How to use BS1~BS3 switch.
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Page 58: Technical Specifications: Outdoor Unit
12 Technical data 12.8 Technical specifications: Outdoor unit INFORMATION technical electrical details multi unit combinations, see technical engineering data. Technical specifications Specification 8 HP 10 HP 12 HP 14 HP 16 HP Casing material Painted galvanised steel Dimensions h×w×d 1685×930×765 m 1685×1240×765 mm Weight 182 kg... - Page 59 12 Technical data Specification 8 HP 10 HP 12 HP 14 HP 16 HP ▪ Sound power 78 dBA 81 dBA 86 dBA ▪ Sound pressure 58 dBA 61 dBA 64 dBA Refrigerant ▪ Type R410A ▪ Charge 6.7 kg 10.3 kg 10.4 kg 11.7 kg 11.8 kg Refrigerant oil Synthetic (ether) oil Safety devices ▪...
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Page 60: 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 61: For The User
13 About the system For the user This operation manual will give a non-exhaustive overview of the About the system main functions of the system. The indoor unit part of VRV IV heat pump system can be used for Detailed information on required actions to achieve certain functions heating/cooling applications. -
Page 62: Operating The System
16 Operation To avoid condensation and water dripping out of the unit. If INFORMATION the temperature or the humidity is beyond these conditions, ▪ The heating capacity drops when outside safety devices may be put in action and the air conditioner temperature falls. -
Page 63: Using The Dry Program
16 Operation Result: The operation lamp lights up and the system starts 3 Press the ON/OFF button of the user interface. operating. Result: The operation lamp lights up and the system starts operating. To stop 4 Press the air flow direction adjust button (only for double-flow, 3 Press the ON/OFF button on the user interface once again. -
Page 64: Setting The Master User Interface
17 Energy saving and optimum operation 16.5 Setting the master user interface Energy saving and optimum operation 16.5.1 About setting the master user interface Observe the following precautions to ensure the system operates properly. ▪ Adjust the air outlet properly and avoid direct air flow to room inhabitants. -
Page 65: Available Comfort Settings
18 Maintenance and service idea, the system automatically starts increasing its refrigerant NOTICE temperature, automatically reducing the delivered capacity and Do not wipe the controller operation panel with benzine, increasing the system's efficiency. thinner, chemical dust cloth, etc. The panel may get Hi-sensible/economic (cooling/heating) discoloured or the coating peeled off. -
Page 66: After-Sales Service And Warranty
18 Maintenance and service WARNING Component Inspection Maintenance cycle cycle (replacements and/or The refrigerant in the air conditioner is safe and normally repairs) does not leak. If the refrigerant leaks in the room, contact Electric motor 1 year 20,000 hours with a fire of a burner, a heater or a cooker may result in a harmful gas. -
Page 67: Troubleshooting
19 Troubleshooting NOTICE Malfunction Measure The system operates ▪ Check if air inlet or outlet of outdoor or ▪ The table indicates main components. Refer to your but cooling or heating indoor unit is not blocked by obstacles. maintenance and inspection contract for more details. is insufficient. -
Page 68: Symptoms That Are Not Air Conditioner Troubles
19 Troubleshooting Main code Contents 19.2.1 Symptom: The system does not operate Fan motor malfunction (outdoor) ▪ The air conditioner does not start immediately after the ON/OFF Electronic expansion valve malfunction (outdoor) button on the user interface is pressed. If the operation lamp lights, the system is in normal condition. -
Page 69: Symptom: White Mist Comes Out Of A Unit (Indoor Unit, Outdoor Unit)
20 Relocation 19.2.7 Symptom: White mist comes out of a unit 19.2.15 Symptom: The display shows "88" (Indoor unit, outdoor unit) This is the case immediately after the main power supply switch is turned on and means that the user interface is in normal condition. When the system is changed over to heating operation after defrost This continues for one minute. - Page 70 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 product according instructions accompanying documentation.
- Page 72 4P388989-1B 2016.02...
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