Table of Contents
Related Manuals for Daikin VRV IV+ Series
Summary of Contents for Daikin VRV IV+ Series
- Page 1 Installation and operation manual VRV IV+ heat pump for high ambient temperatures RXYTQ8U7YF RXYTQ10U7YF RXYTQ12U7YF Installation and operation manual RXYTQ14U7YF English VRV IV+ heat pump for high ambient temperatures RXYTQ16U7YF...
- Page 2 Table of contents 8.2.15 Symptom: The display shows "88"....... 12 Table of contents 8.2.16 Symptom: The compressor in the outdoor unit does not stop after a short heating operation ....... 12 8.2.17 Symptom: The inside of an outdoor unit is warm even when the unit has stopped ........
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Page 3: Table Of Contents
Mode 1: Monitoring settings........30 16.1.8 Mode 2: Field settings..........30 ▪ The full set of latest technical data is available on the Daikin 16.1.9 To connect the PC configurator to the outdoor unit ..31 Business Portal (authentication required). - Page 4 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 5 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 6 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 7 5 User interface 6.2.3 About the heating operation System layout It may take longer to reach the set temperature for general heating operation than for cooling operation. User interface The following operation is performed in order to prevent the heating capacity from dropping or cold air from blowing.
- Page 8 6 Operation Cooling operation Heating operation Fan only operation 6.3.3 To use the dry program (WITH cool/heat changeover remote control switch) To start 1 Select cooling operation mode with the cool/heat changeover remote control switch. 2 Press the ON/OFF button on the user interface. 2 Press the operation mode selector button on the user interface Result: The operation lamp lights up and the system starts operating.
- Page 9 7 Maintenance and service The air flow direction can be adjusted in one of the following ways: NOTICE ▪ The air flow flap itself adjusts its position. Applicable legislation on fluorinated greenhouse gases requires that the refrigerant charge of the unit is indicated ▪...
- Page 10 8 Troubleshooting If after checking all above items, it is impossible to fix the problem Troubleshooting yourself, contact your installer and state the symptoms, the complete model name of the unit (with manufacturing number if possible) and If one of the following malfunctions occur, take the measures shown the installation date (possibly listed on the warranty card).
- Page 11 8 Troubleshooting 8.2.2 Symptom: Cool/Heat cannot be changed Main code Contents over High pressure sensor malfunction (S1NPH) Low pressure sensor malfunction (S1NPL) ▪ When the display shows (change-over under centralized INV PCB abnormal control), it shows that this is a slave user interface. Fin temperature abnormal ▪...
- Page 12 About the box 11.2 To remove the accessories from the outdoor unit 11.1 About Make sure that all accessories are available in the unit. is part of Daikin's wider commitment to reduce our 1× 1× 1× 1× 1× environmental footprint. With...
- Page 13 12 About the units and options Piping accessory bag Model Description RXYTQ8~16 Single non-continuous heating model. 11.3 Accessory pipes: Diameters RXYTQ18~48 Multi non-continuous heating model (consisting of 2 or 3 RXYTQ modules). Accessory pipes (mm) Øa Øb These units are intended for outdoor installation and aimed for heat Gas pipe 25.4 19.1...
- Page 14 13 Unit installation For service purposes, the pushbuttons on the main PCB need to be NOTICE accessed. To access these pushbuttons, the electrical component This is a class A product. In a domestic environment this box cover does not need to be opened. See "To access the field product may cause radio interference in which case the components" [ 4 29].
- Page 15 14 Piping installation Piping installation 14.1 Preparing refrigerant piping 14.1.1 Refrigerant piping requirements NOT allowed NOTICE Allowed (* = preferred installation) ▪ The height of the foundation must at least be 150 mm from the Refrigerant R410A requires strict cautions for keeping the floor.
- Page 16 14 Piping installation Outdoor unit Piping outer diameter size (mm) Size up capacity type (HP) Gas pipe Liquid pipe HP class Piping outer diameter size (mm) 36~48 41.3 19.1 Gas pipe Liquid pipe 12+14 28.6 12.7 → 15.9 D: Piping between refrigerant branch kits 28.6 →...
- Page 17 14 Piping installation Indoor unit capacity index 2 pipes <200 KHRQ22M29H 200≤x<290 290≤x<640 KHRQ22M64H ≥640 KHRQ22M75H If the pipe size above the refnet header is Ø34.9 or more, KHRQ22M75H is required. INFORMATION Maximum 8 branches can be connected to a header. To indoor unit Oil collects to the outmost outdoor unit when the system ▪...
- Page 18 14 Piping installation 7.5° 7.5° Caution label NOT allowed Allowed Left-side connection ▪ Make sure that the total length of the piping connected to the joint Front connection is absolute straight for more than 500 mm. Only if a straight field Right-side connection piping of more than 120 mm is connected, more than 500 mm of For side connections, the knockout hole on the bottom plate should...
- Page 19 14 Piping installation To open the stop valve 1 Remove the stop valve cover. 2 Insert a hexagon wrench into the stop valve and turn the stop valve counterclockwise. To handle the service port ▪ Always use a charge hose equipped with a valve depressor pin, since the service port is a Schrader type valve.
- Page 20 14 Piping installation Method 2: After power ON 5 Cut off the lower part of the gas, liquid and equalising stop valve pipes along the black line. Use an appropriate tool (e.g. a If the system has already been powered on, activate setting [2‑21] pipe cutter).
- Page 21 14 Piping installation Pressure reducing valve 2 Check that, with the vacuum pump turned off, the target Nitrogen vacuum is maintained for at least 1 hour. Weighing scales Refrigerant R410A tank (siphon system) 3 Should you fail to reach the target vacuum within 2 hours or Vacuum pump maintain the vacuum for 1 hour, the system may contain too Liquid line stop valve...
- Page 22 14 Piping installation NOTICE NOTICE If the power of some units is turned off, the charging The refrigerant charge of the system must be less than procedure cannot be finished properly. 100 kg. This means that in case the calculated total refrigerant charge is equal to or more than 95 kg you must NOTICE divide...
- Page 23 14 Piping installation 14.4.4 To charge refrigerant: Flow chart refrigerant" [ 4 24]. For more information, see "To charge 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 24 14 Piping 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 25 14 Piping installation INFORMATION INFORMATION If the total additional refrigerant amount was reached in ▪ When a malfunction is detected during the procedure step 3 (by pre-charging only), record the amount of (e.g., in case of closed stop valve), a malfunction code refrigerant that was added on the additional refrigerant will be displayed.
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Page 26: To Route And Fix The Transmission Wiring
15 Electrical installation Electrical installation DANGER: RISK OF ELECTROCUTION WARNING ALWAYS use multicore cable for power supply cables. 15.1 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. -
Page 27: To Connect The Transmission Wiring
15 Electrical installation 8 HP 10~16 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 28: To Connect The Power Supply
16 Configuration 8 HP 10~16 HP When connecting the earth wire, it is recommended to perform curling. Multiple outdoor units To connect the power supply for multiple outdoor units to each other, ring tongues have to be used. No bare cable can be used. In that case, the ring washer that is installed by default should be removed. -
Page 29: Field Setting Components
16 Configuration Mode 1 and 2 Front plate Main PCB with 3 7‑segment displays and 3 push buttons Mode Description Electrical component box service cover Mode 1 Mode 1 can be used to monitor the current Operate the switches and push buttons with an insulated stick (such situation of the outdoor unit. -
Page 30: To Use Mode 1
16 Configuration Access Action [1‑0] Description Mode 2 Push BS1 for at least 5 seconds. No indication Undefined situation. Outdoor unit is master unit. 7‑segment display indication changes to: Outdoor unit is slave 1 unit. Outdoor unit is slave 2 unit. Push BS1 one more time (shortly) to return to [1‑1] the default situation. -
Page 31: To Connect The Pc Configurator To The Outdoor Unit
General commissioning checklist. Next target temperature during cooling operation. commissioning instructions in this chapter, a general commissioning checklist is also available on the Daikin [2‑8] target (°C) Business Portal (authentication required). 0 (default) Auto The general commissioning checklist is complementary to... -
Page 32: About The Test Run
17 Commissioning Fuses, circuit breakers, or protection devices INFORMATION Check that the fuses, circuit breakers, or the locally ▪ It may take 10 minutes to achieve a uniform refrigerant installed protection devices are of the size and type state before the compressor starts. specified chapter "15.1 ... -
Page 33: Correcting After Abnormal Completion Of The Test Run
18 Hand-over to the user 17.5 Correcting after abnormal Troubleshooting completion of the test run 19.1 Solving problems based on error The test operation is only completed if there is no malfunction code displayed on the user interface or outdoor unit 7‑segment display. In codes case of a displayed malfunction code, perform correcting actions as explained in the malfunction code table. - Page 34 19 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/R9T): ▪...
- Page 35 19 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.
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Page 36: 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 37 20 Technical data Layout A+B+C+D Possibility 1 Possibility 2 a≥10 mm a≥50 mm a≥200 mm b≥300 mm b≥100 mm b≥300 mm c≥10 mm c≥50 mm d≥500 mm d≥500 mm a≥10 mm a≥50 mm a≥200 mm b≥300 mm b≥100 mm b≥300 mm c≥10 mm c≥50 mm d≥500 mm d≥500 mm e≥20 mm e≥100 mm e≥400 mm a≥10 mm a≥50 mm — b≥300 mm b≥100 mm c≥10 mm c≥50 mm d≥500 mm d≥500 mm e≥20 mm e≥100 mm...
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Page 38: Piping Diagram: Outdoor Unit
20 Technical data Piping diagram: RXYTQ14+16 20.2 Piping diagram: Outdoor unit INFORMATION For a legend explaining the figures below, refer to the end of this topic. Piping diagram: RXYTQ8 (S1NPH) (S1NPL) (S1PH) (S2PH) R22T R21T (S1NPL) (S1NPH) (S1PH) R21T Compressor (M1C) Compressor (M2C) Heat exchanger Fan motor (M1F, M2F) - Page 39 20 Technical data Symbols: Q1LD (A1P) Earth current detector (field supply) Field wiring R24 (A4P) Resistor (current sensor) Terminal block R300 (A3P) Resistor (current sensor) Connector Thermistor (air) Terminal Thermistor (accumulator) Protective earth Thermistor (heat exchanger, liquid pipe) Thermistor (subcool liquid pipe) Noiseless earth Thermistor (heat exchanger, gas pipe) Earth wiring...
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Page 40: Disposal
21 Disposal F401U, Fuse Noise filter (ferrite core) F403U Z*F (A2P) Noise filter (with surge absorber) (A2P, A5P) Connectors for optional accessories: F601U, Fuse X10A Connector (drainpan heater) (A3P, A6P) X37A Connector (power adapter) HAP (A*P) Pilot lamp (service monitor is green) X66A Connector (remote switching COOL/HEAT selector) K3R (A3P,... - Page 44 4P546223-1 B 0000000- 4P546223-1B 2020.10 Verantwortung für Energie und Umwelt...