Daikin VRV IV RXMLQ8T7Y1B Series Installation And Operation Manual
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- Installation and operation manual (44 pages) ,
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Summary of Contents for Daikin VRV IV RXMLQ8T7Y1B Series
- Page 1 Installation and operation manual VRV IV system air conditioner RXMLQ8T7Y1B* RXYLQ10T7Y1B* Installation and operation manual RXYLQ12T7Y1B* English VRV IV system air conditioner RXYLQ14T7Y1B*...
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Page 4: Table Of Contents
Table of contents 5.7.7 To connect the power supply ........20 Table of contents 6 Configuration Making field settings..............20 6.1.1 About making field settings .......... 20 1 About the documentation 6.1.2 Field setting components ..........21 About this document..............6.1.3 To access the field setting components....... -
Page 5: About The Documentation
▪ A subset of the latest technical data is available on the regional About this document Daikin website (publicly accessible). ▪ The full set of latest technical data is available on the Daikin Target audience extranet (authentication required). Authorised installers + end users... -
Page 6: To Remove The Transportation Stay
3 About the units and options To remove the transportation stay NOTICE If the unit is operated with the transportation stay attached, abnormal vibration or noise may be generated. The compressor transportation stay must be removed. It is installed under the compressor leg in order to protect the unit during transport. -
Page 7: Additional Installation Site Requirements Of The Outdoor Unit In Cold Climates
4 Preparation 4.1.2 Additional installation site requirements 4.2.2 To select the piping size of the outdoor unit in cold climates Determine the proper size using the following tables and reference figure (only for indication). NOTICE When operating the unit in a low outdoor ambient temperature with high humidity conditions, make sure to take precautions to keep the drain holes of the unit free by using proper equipment. -
Page 8: To Select Refrigerant Branch Kits
4 Preparation Indoor unit capacity Piping outer diameter size (mm) F: Piping between refrigerant branch kit and BP index unit Gas pipe Liquid pipe 15~50 12.7 Pipe size for direct connection on BP unit must be based on the total capacity of the connected indoor units (only in case RA ... -
Page 9: Multiple Outdoor Units: Possible Layouts
4 Preparation Oil collects to the outmost outdoor unit when the system INFORMATION stops Maximum 8 branches can be connected to a header. Not allowed Allowed ▪ How to choose an outdoor multi connection piping kit. Choose ▪ If the piping length between the outdoor units exceeds 2 m, create from the following table in accordance with the number of outdoor a rise of 200 ... -
Page 10: Installation
5 Installation ▪ Transmission line section: 0.75~1.25 mm , maximum length is 5.1.2 To open the electrical component box of 1000 m. If the total transmission wiring exceeds these limits, it the outdoor unit may result in communication error. NOTICE For non-standard combinations Do NOT apply excessive force when opening the Calculate the recommended fuse capacity. -
Page 11: Connecting The Refrigerant Piping
5 Installation ≥AB Large knockout hole Drill Points for drilling (mm) NOTICE Minimum foundation Precautions when making knockout holes: Anchor point (4×) ▪ Avoid damaging the casing. ▪ After making the knockout holes, we recommend you 8~14 1076 1302 remove the burrs and paint the edges and areas around the edges using repair paint to prevent rusting. -
Page 12: Multiple Outdoor Units: Knockout Holes
5 Installation To fully open the Ø19.1 mm~Ø25.4 mm stop valve, turn the hexagonal wrench until a torque between 27 and 33 N•m is achieved. Inadequate torque may cause leakage of refrigerant and breakage of the stop valve cap. NOTICE Pay attention that mentioned torque range is applicable for 5.3.4 Multiple outdoor units: Knockout holes... -
Page 13: To Remove The Pinched Pipes
5 Installation 5.3.7 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 14: Checking Refrigerant Piping: General Guidelines
5 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 15: Charging Refrigerant
5 Installation ▪ Use heat resistant polyethylene foam which can withstand a NOTICE temperature of 70°C for liquid piping and polyethylene foam which Close the front panel before any refrigerant charge can withstand a temperature of 120°C for gas piping. operation is executed. -
Page 16: To Charge Refrigerant: Flow Chart
5 Installation Metric piping. When using metric piping, replace the weight factors Inch piping Metric piping in the formula by the ones from the following table: Piping Weight factor Piping Weight factor Inch piping Metric piping Ø15.9 mm 0.18 Ø15 mm 0.16 Piping Weight factor Piping... -
Page 17: To Charge Refrigerant
5 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 18: Step 6: To Manually Charge Refrigerant
5 Installation INFORMATION NOTICE If the total additional refrigerant amount was reached in Make sure to open all stop valves after (pre-) charging the step 4 (by pre-charging only), record the amount of refrigerant. refrigerant that was added on the additional refrigerant Operating with the stop valves closed will damage the charge label provided with the unit and attach it on the compressor. -
Page 19: Guidelines When Knocking Out Knockout Holes
5 Installation Fix to the indicated plastic brackets using field supplied clamping 5.7.2 Guidelines when knocking out knockout material. holes Wiring between the units (indoor-outdoor) (F1/F2 left) Internal transmission wiring (Q1/Q2) ▪ To punch a knockout hole, hit on it with a hammer. Plastic bracket Field supplied clamps ▪... -
Page 20: To Route And Fix The Power Supply
6 Configuration Power supply terminal block Connect each power wire: RED to L1, WHT to L2, BLK to L3 and BLU to N Earth wire (GRN/YLW) Clamp the power supply to the plastic bracket using a field supplied clamp to prevent external force being applied to the terminal. -
Page 21: Field Setting Components
6 Configuration PC configurator For VRV IV heat pump system it is alternatively possible to make several commissioning field settings through a personal computer interface (for this, option EKPCCAB is required). The installer can prepare the configuration (off-site) on PC and afterwards upload the configuration to the system. -
Page 22: To Use Mode 1
6 Configuration The master unit should be used to input field settings in Access Action mode 2. Mode 1 Push BS1 one time. [1‑0] Description 7‑segment display indication changes to: No indication Undefined situation. Outdoor unit is master unit. Mode 2 Push BS1 for at least 5 seconds. -
Page 23: To Connect The Pc Configurator To The Outdoor Unit
7 Commissioning [2‑35] [2‑0] Description Height difference setting. 0 (default) Each individual outdoor unit can select Cool/ Heat operation (by Cool/Heat selector if [2‑35] Description installed), or by defining master indoor user In case the outdoor unit is installed in the interface (see setting [2‑83] and the operation lowest position (indoor units are installed on a manual). -
Page 24: Precautions When Commissioning
7 Commissioning Stop valves Precautions when commissioning Be sure that the stop valves are open on both liquid and CAUTION gas side. Do NOT perform the test operation while working on Damaged equipment the indoor units. Check the inside of the unit on damaged components or When performing the test operation, NOT only the outdoor squeezed pipes. -
Page 25: Correcting After Abnormal Completion Of The Test Run
8 Hand-over to the user 2 Make sure all field settings you want are set; see "6.1 Making Completion Description field settings" on page 20. Abnormal Indication of malfunction code on the 3 Turn ON the power to the outdoor unit and the connected completion 7‑segment display. -
Page 26: Error Codes: Overview
9 Troubleshooting Error codes: Overview Main code Sub code Cause Solution Master Slave 1 Slave 2 High pressure switch was activated Check stop valve situation or (S1PH, S2PH) - A1P (X3A; X4A) abnormalities in (field) piping or airflow over air cooled coil. ▪... - Page 27 9 Troubleshooting Main code Sub code Cause Solution Master Slave 1 Slave 2 Liquid temperature sensor (after Check connection on PCB or actuator. subcool HE) malfunction (R5T) - A1P (X30A) Liquid temperature sensor (coil) Check connection on PCB or actuator. malfunction (R4T) - A1P (X30A) Gas temperature sensor (after subcool Check connection on PCB or actuator.
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Page 28: 10 Technical Data
(e.g., RA DX indoor unit, Hydrobox, …) 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). 10.1... -
Page 29: Piping Diagram: Outdoor Unit
10 Technical data (mm) ABCD Sides along the installation site with obstacles Front side Suction side ▪ In case of an installation site where sides A+B+C+D have obstacles, the wall heights of sides A+C have no impact on service space dimensions. Refer to the figure above for impact of wall heights of sides B+D on service space dimensions. -
Page 30: Wiring Diagram: Outdoor Unit
10 Technical data Expansion valve, main (Y1E) C* (A3P) Capacitor Expansion valve, subcool heat exchanger (Y2E) DS* (A1P) DIP switch Subcool heat exchanger Oil separator E1HC Crankcase heater Solenoid valve, oil1 (Y3S) Solenoid valve, oil accumulator (Y2S) F1S (A2P) Surge arrestor 4‑way valve, main (Y1S) F1U (A4P) Fuse (T, 3.15 A, 250 V) -
Page 31: For The User
11 About the system For the user Above operation range is only valid in case direct expansion indoor About the system units are connected to the VRV IV system. The indoor unit part of VRV IV heat pump system can be used for Special operation ranges are valid in case of using Hydrobox units or heating/cooling applications. -
Page 32: To Operate The System (With Cool/Heat Changeover Remote Control Switch)
13 Operation ▪ The micro computer automatically determines temperature and Heating operation fan speed (cannot be set by the user interface). Fan only operation ▪ The system does not go into operation if the room temperature is 2 Press the ON/OFF button on the user interface. low (<20°C). -
Page 33: About The Air Flow Flap
14 Maintenance and service When the system is installed as shown in the figure above, it is 13.4.1 About the air flow flap necessary to designate one of the user interfaces as the master user interface. Double flow+multi-flow units The displays of slave user interfaces show (change-over under centralised control) and slave user interfaces automatically Corner units... -
Page 34: After-Sales Service And Warranty
15 Troubleshooting Malfunction Measure 14.2 After-sales service and warranty If the user interface display indicates the Notify your installer and unit number, the operation lamp flashes report the malfunction 14.2.1 Warranty period and the malfunction code appears. code. ▪ This product includes a warranty card that was filled in by the If the system does NOT properly operate except for the above dealer at the time of installation. -
Page 35: Symptoms That Are Not System Malfunctions
15 Troubleshooting Main code Contents Main code Contents EEPROM failure (indoor) Autocharge operation related Drain system malfunction (indoor) Autocharge operation related Fan motor malfunction (indoor) Capacity setting malfunction (outdoor) Swing flap motor malfunction (indoor) Abnormal low pressure drop, faulty expansion valve Expansion valve malfunction (indoor) Reversed power supply phase malfunction Drain malfunction (indoor unit) - Page 36 16 Relocation 15.2.4 Symptom: The fan speed does not 15.2.11 Symptom: Dust comes out of the unit correspond to the setting When the unit is used for the first time in a long time. This is because dust has gotten into the unit. The fan speed does not change even if the fan speed adjustment button is pressed.
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