Daikin VRV IV RKXYQ8T7Y1B Installation And Operation Manual
Compressor unit for indoor installation
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Also See for VRV IV RKXYQ8T7Y1B:
- Installer and user reference manual (156 pages) ,
- Installation and operation manual (48 pages) ,
- Installer and user manual (140 pages)
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Summary of Contents for Daikin VRV IV RKXYQ8T7Y1B
- Page 1 Installation and operation manual VRV IV compressor unit for indoor installation Installation and operation manual RKXYQ5T7Y1B English VRV IV compressor unit for indoor installation RKXYQ8T7Y1B...
- Page 2 2PW51591-2B...
- Page 3 2PW51591-2B...
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Page 4: Table Of Contents
Table of Contents 6.1.2 To access the field setting components....... 19 Table of Contents 6.1.3 Field setting components ..........19 6.1.4 To access mode 1 or 2 ..........20 6.1.5 To use mode 1 (and default situation) ......20 6.1.6 To use mode 2 ............. -
Page 5: About The Documentation
Latest revisions of the supplied documentation may be available on About the documentation the regional Daikin website or via your dealer. The original documentation is written in English. All other languages are translations. About this document Target audience... -
Page 6: To Remove The Transportation Stay
3 About the units and options 5 HP 8 HP Specification 5 HP 8 HP c Gas Ø15.9 mm Ø19.1 mm Maximum capacity Heating 16.0 kW 25.0 kW d Liquid Ø9.5 mm Ø9.5 mm Cooling 14.0 kW 22.4 kW Outside ambient Heating –20~15.5°C WB Piping adapter (Ø19.1→22.2 mm) that you need when design temperature connecting piping to the heat exchanger unit (only for Cooling –5~46°C DB... -
Page 7: Preparation
4 Preparation Cable Cable tie 1 2 3 4 Not needed 2 Remove the mounting plate from the PCB. X66A 8 Perform a test run. See the "Commissioning" chapter. Preparation Preparing installation site 3 Mount the PCB. 4.1.1 Installation site requirements of the compressor unit ▪... -
Page 8: Refrigerant Piping Material
4 Preparation ▪ Foreign materials inside pipes (including oils for fabrication) must B: Piping between compressor unit and first be ≤30 mg/10 m. refrigerant branch kit Use the following diameters: 4.2.2 Refrigerant piping material Compressor unit Piping outer diameter size (mm) ▪... -
Page 9: Refrigerant Piping Length And Height Difference
4 Preparation Compressor unit capacity type Refrigerant branch kit 4 EKEXV → AHU L4≤5 m 5 HP KHRQ22M20T 5 First branch kit → Indoor unit/ L3+L4≤40 m 8 HP KHRQ22M29T9 L5+L6≤40 m L5+L7≤40 m Refnet joints at other branches Maximum height differences For refnet joints other than the first branch, select the proper branch kit model based on the total capacity index of all indoor units 1 Heat exchanger unit ↔... -
Page 10: Installation
5 Installation 5 HP 8 HP Transmission wiring Sheathed + shielded cable (2 wires) Vinyl cords 0.75~1.25 mm² (using shielded cable for the transmission wiring is mandatory for 5 HP, and optional for 8 HP) Maximum wiring length 300 m 4× 4× (= distance between compressor unit and furthest indoor unit) Total wiring length 600 m... -
Page 11: To Remove The Pinched Pipes
5 Installation To open the stop valve Tightening torques 1 Remove the stop valve cover. Stop valve Tightening torque N•m (turn clockwise to close) size (mm) 2 Insert a hexagon wrench into the stop valve and turn the stop Shaft valve counterclockwise. -
Page 12: To Connect The Refrigerant Piping To The Compressor Unit
5 Installation CAUTION Do not vent gases into the atmosphere. a b c d 4 When all gas and oil is recovered from the pinched piping, disconnect the charge hose and close the service ports. 5 Cut off the lower part of the gas and liquid stop valve pipes along the black line. -
Page 13: Checking The Refrigerant Piping
5 Installation NOTICE Wait until the compressor unit has finished the initialisation to apply setting [2‑21]. Leak test and vacuum drying Checking the refrigerant piping involves: ▪ Checking for any leakages in the refrigerant piping. ▪ Performing vacuum drying to remove all moisture, air or nitrogen in the refrigerant piping. -
Page 14: To Perform A Leak Test
5 Installation Possible connections: NOTICE Make sure to use a recommended bubble test solution Manifold Connections Compressor unit from your wholesaler. Do not use soap water, which may 5 HP Circuit 1 and 2 p < p > cause cracking of flare nuts (soap water may contain salt, together which absorbs moisture that will freeze when the piping gets cold), and/or lead to corrosion of flared joints (soap... -
Page 15: Charging Refrigerant
5 Installation Inch piping Metric piping Charging refrigerant Size (Ø) (mm) Weight factor Size (Ø) (mm) Weight factor 5.6.1 Precautions when charging refrigerant 0.022 0.018 0.059 0.065 WARNING 12.7 0.12 0.097 ▪ Only use R410A as refrigerant. Other substances may cause explosions and accidents. -
Page 16: Error Codes When Charging Refrigerant
5 Installation 3 Pre‑charge refrigerant until the determined additional refrigerant INFORMATION amount is reached or pre‑charging is not possible anymore, and The manual refrigerant charge operation will automatically then close valves C and B. stop within 30 minutes. If charging is not completed after 4 Do one of the following: 30 minutes, perform the additional refrigerant charging operation again. -
Page 17: Connecting The Electrical Wiring
5 Installation GWP = Global warming potential Heat exchanger unit Main line. The main line is the line to which the NOTICE transmission wiring of the heat exchanger unit is connected. In Europe, the greenhouse gas emissions of the total b1, b2, b3 Branch lines refrigerant charge in the system (expressed as tonnes... -
Page 18: Finishing The Compressor Unit Installation
6 Configuration 3 Connect the power supply as follows: 6 Connect an earth leakage circuit breaker and fuse to the power supply line. 3N~ 50 Hz 380-415 V L1 L2 L3 Finishing the compressor unit installation 5.8.1 To finish the transmission wiring L1 L2 L3 After installing the transmission wires inside the unit, wrap them along with the on-site refrigerant pipes using finishing tape, as... -
Page 19: To Access The Field Setting Components
6 Configuration Mode Description Model DIP switch Mode 2 Mode 2 is used to change the field settings of 8 HP ▪ DS1‑1: COOL/HEAT selector (see the system. Consulting the current field setting "3.3.1 Possible options for the compressor unit (field settings) value and changing the current field setting and heat exchanger unit" ... -
Page 20: To Access Mode 1 Or 2
6 Configuration Description INFORMATION H1P H2P H3P H4P H5P H6P H7P If you get confused in the middle of the process, press BS1 Value 4 to return to the default situation. (in mode 2) (H2P~H7P = binary 4) 6.1.5 To use mode 1 (and default situation) In mode 1 (and in default situation) you can read out some 6.1.4 To access mode 1 or 2... -
Page 21: To Use Mode 2
6 Configuration Action Button/display Action Button/display BS3 [1×] BS3 [1×] Display the value of setting Select value 4 (= 8°C). a: Display the current value. (there are 8 units connected) b: Change to 4. ("X×" BS2 [X×] BS1 [1×] Quit mode 1. BS3 [1×] depends on the current BS3 [1×]... - Page 22 6 Configuration Value / Description Setting Value / Description Shows the status of power consumption limitation operation. [1‑1] Unit is currently not operating under low noise restrictions. Shows the status Unit is currently operating under low of low noise Unit is currently not operating under power noise restrictions.
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Page 23: Mode 2: Field Settings
6 Configuration Setting Value / Description Setting Value / Description [1‑17] When the latest malfunction codes were reset by [1‑40] For more information, see setting [2‑81]. accident on an indoor unit user interface, they Shows the latest Shows the current can be checked again through this monitoring malfunction code. - Page 24 6 Configuration Setting Value Description (5 HP) (8 HP) [2‑16] 0 (default) — Deactivated. — Activated. Test run heat exchanger unit. When activated, the heat exchanger fans start running. This allows you to check the ducting with a running heat exchanger unit. [2‑20] 0 (default) Deactivated.
- Page 25 6 Configuration Setting Value Description (5 HP) (8 HP) [2‑30] — Power consumption limitation level (step 1) via the external control adaptor (DTA104A61/62). 3 (default) If the system needs to be running under power (= binary 2) (default) consumption limitation conditions when an external —...
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Page 26: To Connect The Pc Configurator To The Compressor Unit
7 Commissioning 6.1.9 To connect the PC configurator to the Installation compressor unit Check that the unit is properly installed, to avoid abnormal noises and vibrations when starting up the unit. 5 HP 8 HP Field wiring Be sure that the field wiring has been carried out according to the instructions described in the chapter "5.7 ... -
Page 27: Checklist During Commissioning
7 Commissioning Result: The test operation is automatically carried out, the Installation date and field setting compressor unit H2P flashes and the indication "Test operation" Be sure to keep record of the installation date on the and "Under centralised control" will display on the user interface sticker on the rear of the front panel according to of indoor units. -
Page 28: Correcting After Abnormal Completion Of The Test Run
8 Troubleshooting Step Description 7.3.5 Operating the unit Unit stop Once the units are installed and test operation of compressor unit, heat exchanger unit and indoor units is finished, the operation of the INFORMATION system can start. During the test operation, it is not possible to stop the unit For operating the indoor unit, the user interface of the indoor unit operation from a user interface. - Page 29 8 Troubleshooting Main code Cause Solution ▪ The stop valves of the compressor unit are left closed. ▪ Open the stop valves on both the gas and liquid side. ▪ Insufficient refrigerant ▪ Check if the additional refrigerant charge has been finished correctly.
- Page 30 8 Troubleshooting In case of 8 HP: Main code Sub code Cause Solution ▪ Heat exchanger fan malfunction. In the heat exchanger unit: ▪ Drain pump feedback contact is open. ▪ Check connection on PCB: A1P (X15A) ▪ Check connection on terminal block (X2M) ▪...
- Page 31 8 Troubleshooting Main code Sub code Cause Solution High pressure sensor malfunction Check connection on PCB or actuator. Compressor unit: (S1NPH): open circuit - A1P (X32A) High pressure sensor malfunction Check connection on PCB or actuator. Compressor unit: (S1NPH): short circuit - A1P (X32A) Low pressure sensor malfunction Check connection on PCB or actuator.
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Page 32: Technical Data
9 Technical data Main code Sub code Cause Solution ▪ Auto address malfunction (inconsistency) ▪ Check transmission wired unit amount matches with powered unit amount (by monitor ▪ Mismatch compressor unit heat mode) or wait till initialisation is finished. exchanger unit. ▪... -
Page 33: Wiring Diagram: Compressor Unit
9 Technical data Heat exchanger S1NPH High pressure sensor Compressor S1PH High pressure switch M1F~M3F Fan motor R1T (A) Thermistor (air) Cool/heat selector switch (optional) R2T (A) Thermistor (gas) R3T (A) Thermistor (coil) IGBT power module (A2P) R21T (B) Thermistor (discharge) Diode module (A2P) R3T (B) Thermistor (suction accumulator) -
Page 34: For The User
10 About the system S1PH High pressure switch (discharge) Terminal strip (power supply) Air control switch (optional) PCB connector Cool/heat selector switch (optional) Terminal strip on PCB (A*P) SEG1~SEG3 7-segment display Connector Earth leakage detector Electronic expansion valve IGBT power module (A3P) Solenoid valve (4‑way valve) Diode module (A3P) Noise filter (ferrite core) -
Page 35: About Cooling, Heating, Fan Only, And Automatic Operation
12 Operation 12.2.2 About cooling, heating, fan only, and 12.2.5 To operate the system (WITH cool/heat automatic operation changeover remote control switch) ▪ Changeover cannot be made with a user interface whose display Overview of the changeover remote control switch shows "change-over under centralised control"... -
Page 36: To Use The Dry Program (Without Cool/Heat Changeover Remote Control Switch)
12 Operation 12.3.2 To use the dry program (WITHOUT cool/ Ceiling suspended units heat changeover remote control switch) Wall-mounted units To start 1 Press the operation mode selector button on the user interface several times and select (program dry operation). For the following conditions, a micro computer controls the air flow 2 Press the ON/OFF button of the user interface. -
Page 37: To Designate The Master User Interface (Vrv Dx)
13 Maintenance and service 12.5.2 To designate the master user interface WARNING (VRV DX) The refrigerant in the system is safe and normally does not leak. If the refrigerant leaks in the room, contact with a fire 1 Press the operation mode selector button of the current master of a burner, a heater or a cooker may result in a harmful user interface for 4 seconds. -
Page 38: Error Codes: Overview
14 Troubleshooting Malfunction Measure 14.1 Error codes: Overview If a safety device such as a fuse, a Turn off the main power In case a malfunction code appears on the indoor unit user interface breaker or an earth leakage breaker switch. -
Page 39: Symptoms That Are Not System Malfunctions
14 Troubleshooting ▪ When the cool/heat changeover remote control switch is installed Main code Contents and the display shows (change-over under centralized Low pressure sensor malfunction (BIPL) control), this is because cool/heat changeover is controlled by the INV PCB abnormal cool/ heat changeover remote control switch. - Page 40 15 Relocation ▪ A continuous low "shah" sound is heard when the system is in 14.2.18 Symptom: Hot air can be felt when the cooling operation or at a stop. When the drain pump (optional indoor unit is stopped accessories) is in operation, this noise is heard. Several different indoor units are being run on the same system.
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