Related Manuals for Daikin VRV IV W+ Series
Summary of Contents for Daikin VRV IV W+ Series
- Page 1 Installer and user reference guide VRV IV water-cooled system air conditioner RWEYQ8T9Y1B RWEYQ10T9Y1B RWEYQ12T9Y1B RWEYQ14T9Y1B...
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Page 2: Table Of Contents
Table of contents Table of contents 1 About the documentation About this document ..............................Meaning of warnings and symbols..........................2 General safety precautions For the installer ................................2.1.1 General ................................2.1.2 Installation site ............................... 2.1.3 Refrigerant — in case of R410A or R32......................2.1.4 Brine................................ - Page 3 14 Technical data 14.1 Information requirements for Eco Design........................45 For the installer 15 About the box 15.1 About LOOP BY DAIKIN ..............................47 15.2 Overview: About the box ..............................47 15.3 To unpack the outdoor unit............................48 15.4 To remove the accessories from the outdoor unit ......................49 15.5...
- Page 4 Table of contents 18.3 Connecting the refrigerant piping ..........................83 18.3.1 About connecting the refrigerant piping ....................... 83 18.3.2 Precautions when connecting the refrigerant piping..................83 18.3.3 To route the refrigerant piping ........................84 18.3.4 To connect the refrigerant piping to the outdoor unit ................. 84 18.3.5 To connect the multi connection piping kit ....................
- Page 5 Table of contents 22.1.1 To prevent electrical hazards ......................... 133 22.2 Maintenance of the plate heat exchanger........................134 22.2.1 To clean the plate heat exchanger......................... 134 22.3 About service mode operation............................135 22.3.1 To use vacuum mode ............................. 135 22.3.2 To recover refrigerant ............................
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Page 6: About The Documentation
The original documentation is written in English. All other languages are translations. 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 Business Portal (authentication required). - Page 7 About the documentation DANGER: RISK OF BURNING/SCALDING Indicates a situation that could result in burning/scalding because of extreme hot or cold temperatures. DANGER: RISK OF EXPLOSION Indicates a situation that could result in explosion. WARNING Indicates a situation that could result in death or serious injury. WARNING: FLAMMABLE MATERIAL CAUTION Indicates a situation that could result in minor or moderate injury.
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Page 8: General Safety Precautions
Improper installation or attachment of equipment or accessories could result in electrical shock, short-circuit, leaks, fire or other damage to the equipment. Only use accessories, optional equipment and spare parts made or approved by Daikin. WARNING Make sure installation, testing and applied materials comply with applicable legislation (on top of the instructions described in the Daikin documentation). -
Page 9: Installation Site
General safety precautions CAUTION ▪ Do NOT place any objects or equipment on top of the unit. ▪ Do NOT sit, climb or stand on the unit. NOTICE Works executed on the outdoor unit are best done under dry weather conditions to avoid water ingress. - Page 10 General safety precautions WARNING During tests, NEVER pressurize the product with a pressure higher than the maximum allowable pressure (as indicated on the nameplate of the unit). WARNING Take sufficient precautions in case of refrigerant leakage. If refrigerant gas leaks, ventilate the area immediately.
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Page 11: Brine
General safety precautions Then A siphon tube is present Charge with the cylinder upright. (i.e., the cylinder is marked with "Liquid filling siphon attached") A siphon tube is NOT present Charge with the cylinder upside down. ▪ Open refrigerant cylinders slowly. ▪... -
Page 12: Electrical
General safety precautions 2.1.6 Electrical DANGER: RISK OF ELECTROCUTION ▪ Turn OFF all power supply before removing the switch box cover, connecting electrical wiring or touching electrical parts. ▪ Disconnect the power supply for more than 10 minutes, and measure the voltage at the terminals of main circuit capacitors or electrical components before servicing. - Page 13 General safety precautions NOTICE Precautions when laying power wiring: ▪ Do NOT connect wiring of different thicknesses to the power terminal block (slack in the power wiring may cause abnormal heat). ▪ When connecting wiring which is the same thickness, do as shown in the figure above.
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Page 14: Specific Installer Safety Instructions
Specific installer safety instructions 3 Specific installer safety instructions Always observe the following safety instructions and regulations. WARNING Tear apart and throw away plastic packaging bags so that nobody, especially children, can play with them. Possible risk: suffocation. CAUTION Appliance not accessible to the general public, install it in a secured area, protected from easy access. - Page 15 Specific installer safety instructions WARNING NEVER remove the spun piping by brazing. Any gas or oil remaining inside the stop valve may blow off the spun piping. WARNING ▪ ONLY use R410A as refrigerant. Other substances may cause explosions and accidents.
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Page 16: For The User
For the user RWEYQ8~14T9Y1B Installer and user reference guide VRV IV water-cooled system air conditioner 4P452191-1B – 2020.10... -
Page 17: User Safety Instructions
User safety instructions 4 User safety instructions Always observe the following safety instructions and regulations. In this chapter General....................................Instructions for safe operation............................... 4.1 General WARNING If you are NOT sure how to operate the unit, contact your installer. WARNING Children aged from 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge can only use this appliance if... -
Page 18: Instructions For Safe Operation
User safety instructions ▪ Units are marked with the following symbol: This means that electrical and electronic products may NOT be mixed with unsorted household waste. Do NOT try to dismantle the system yourself: the dismantling of the system, treatment of the refrigerant, of oil and of other parts must be done by an authorized installer and must comply with applicable legislation. - Page 19 User safety instructions CAUTION To avoid oxygen deficiency, ventilate the room sufficiently if equipment with burner is used together with the system. WARNING This unit contains electrical and hot parts. WARNING Before operating the unit, be sure the installation has been carried out correctly by an installer.
- Page 20 User safety instructions WARNING ▪ Do NOT modify, disassemble, remove, reinstall or repair the unit yourself as incorrect dismantling or installation may cause an electric shock or fire. Contact your dealer. ▪ In case of accidental refrigerant leaks, make sure there are no naked flames.
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Page 21: About The System
About the system 5 About the system The indoor unit part of VRV IV heat recovery system can be used for heating/ cooling applications. The type of indoor unit which can be used depends on the outdoor units series. NOTICE For future modifications or expansions of your system: A full overview of allowable combinations (for future system extensions) is available in technical engineering data and should be consulted. - Page 22 About the system Heat recovery system a Unit b Refrigerant piping c Branch selector unit (BS*) d Multi branch selector unit (BS*) e VRV DX indoor unit f Low temperature (LT) Hydrobox unit g Cooling only VRV indoor unit h High temperature (HT) Hydrobox unit i EKEXV kit j Air handling unit (AHU) k User interface...
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Page 23: User Interface
User interface 6 User interface CAUTION ▪ NEVER touch the internal parts of the controller. ▪ Do NOT remove the front panel. Some parts inside are dangerous to touch and appliance problems may happen. For checking and adjusting the internal parts, contact your dealer. -
Page 24: Before Operation
Before operation 7 Before operation WARNING This unit contains electrical and hot parts. WARNING Before operating the unit, be sure the installation has been carried out correctly by an installer. NOTICE NEVER inspect or service the unit by yourself. Ask a qualified service person to perform this work. -
Page 25: Operation
Operation 8 Operation In this chapter Operation range..................................Operating the system ................................8.2.1 About operating the system ..........................8.2.2 About cooling, heating, fan only, and automatic operation ................. 8.2.3 About the heating operation ..........................8.2.4 To operate the system (WITHOUT cool/heat changeover remote control switch) ..........8.2.5 To operate the system (WITH cool/heat changeover remote control switch)............. -
Page 26: About Cooling, Heating, Fan Only, And Automatic Operation
Operation 8.2.2 About cooling, heating, fan only, and automatic operation ▪ Changeover cannot be made with a user interface whose display shows "change-over under centralised control" (refer to installation and operation manual of the user interface). ▪ When the display "change-over under centralised control"... -
Page 27: To Operate The System (Without Cool/Heat Changeover Remote Control Switch)
Operation INFORMATION ▪ The heating capacity drops when the outside temperature falls. If this happens, use another heating device together with the unit. (When using together with appliances that produce open fire, ventilate the room constantly). Do not place appliances that produce open fire in places exposed to the air flow from the unit or under the unit. -
Page 28: Using The Dry Program
Operation Cooling operation Heating operation Fan only operation 2 Press the ON/OFF button on the user interface. Result: The operation lamp lights up and the system starts operating. To stop 3 Press the ON/OFF button on the user interface once again. Result: The operation lamp goes out and the system stops operating. -
Page 29: To Use The Dry Program (With Cool/Heat Changeover Remote Control Switch)
Operation To stop 4 Press the ON/OFF button on the user interface once again. Result: The operation lamp goes out and the system stops operating. NOTICE Do not turn off power immediately after the unit stops, but wait for at least 5 minutes. -
Page 30: Setting The Master User Interface
Operation Ceiling suspended units Wall-mounted units For the following conditions, a micro computer controls the air flow direction which may be different from the display. The air flow direction can be adjusted in one of the following ways: ▪ The air flow flap itself adjusts its position. ▪... -
Page 31: About Control Systems
Operation 8.6 About control systems This system provides two other control systems beside individual control system (one user interface controls one indoor unit). Confirm the following if your unit is of the following control system type: Type Description Group control system 1 user interface controls up to 16 indoor units. -
Page 32: Energy Saving And Optimum Operation
Energy saving and optimum operation 9 Energy saving and optimum operation Observe the following precautions to ensure the system operates properly. ▪ Adjust the air outlet properly and avoid direct air flow to room inhabitants. ▪ Adjust the room temperature properly for a comfortable environment. Avoid excessive heating or cooling. -
Page 33: Available Comfort Settings
Energy saving and optimum operation Automatic The refrigerant temperature is set depending on the outdoor ambient conditions. As such adjusting the refrigerant temperature to match the required load (which is also related to the outdoor ambient conditions). E.g., when your system is operating in cooling, you do not need as much cooling under low outdoor ambient temperatures (e.g., 25°C) as under high outdoor ambient temperatures (e.g., 35°C). -
Page 34: Maintenance And Service
Maintenance and service 10 Maintenance and service NOTICE NEVER inspect or service the unit by yourself. Ask a qualified service person to perform this work. WARNING NEVER replace a fuse with a fuse of a wrong ampere ratings or other wires when a fuse blows out. -
Page 35: Maintenance Before A Long Stop Period
Maintenance and service ▪ Turn on the power at least 6 hours before operating the unit in order to ensure smoother operation. As soon as the power is turned on, the user interface display appears. 10.2 Maintenance before a long stop period E.g., at the end of the season. -
Page 36: Recommended Maintenance And Inspection
Maintenance and service ▪ If repairs to the product are necessary within the warranty period, contact your dealer and keep the warranty card at hand. 10.4.2 Recommended maintenance and inspection Since dust collects when using the unit for several years, performance of the unit will deteriorate to some extent. -
Page 37: Shortened Maintenance And Replacement Cycles
Maintenance and service NOTICE ▪ The table indicates main components. Refer to your maintenance and inspection contract for more details. ▪ The table indicates recommended intervals of maintenance cycles. However, in order to keep the unit operational as long as possible, maintenance work may be required sooner. -
Page 38: Troubleshooting
Troubleshooting 11 Troubleshooting If one of the following malfunctions occur, take the measures shown below and contact your dealer. WARNING Stop operation and shut off the power if anything unusual occurs (burning smells etc.). Leaving the unit running under such circumstances may cause breakage, electric shock or fire. -
Page 39: Error Codes: Overview
Troubleshooting In this chapter 11.1 Error codes: Overview ................................11.2 Symptoms that are NOT system malfunctions ........................11.2.1 Symptom: The system does not operate....................... 11.2.2 Symptom: Cool/Heat cannot be changed over ..................... 11.2.3 Symptom: Fan operation is possible, but cooling and heating do not work ............11.2.4 Symptom: The fan speed does not correspond to the setting ................ -
Page 40: Symptom: Fan Operation Is Possible, But Cooling And Heating Do Not Work
Troubleshooting ▪ When the cool/heat changeover remote control switch is installed and the display shows (change-over under centralized control), this is because cool/ heat changeover is controlled by the cool/ heat changeover remote control switch. Ask your dealer where the remote control switch is installed. 11.2.3 Symptom: Fan operation is possible, but cooling and heating do not work Immediately after the power is turned on. -
Page 41: Symptom: Noise Of Air Conditioners (Indoor Unit, Outdoor Unit)
Troubleshooting ▪ A continuous low "shah" sound is heard when the system is in cooling operation or at a stop. When the drain pump (optional accessories) is in operation, this noise is heard. ▪ A "pishi-pishi" squeaking sound is heard when the system stops after heating operation. -
Page 42: Symptom: The Inside Of An Outdoor Unit Is Warm Even When The Unit Has Stopped
Troubleshooting 11.2.17 Symptom: The inside of an outdoor unit is warm even when the unit has stopped This is because the crankcase heater is warming the compressor so that the compressor can start smoothly. 11.2.18 Symptom: Hot air can be felt when the indoor unit is stopped Several different indoor units are being run on the same system. -
Page 43: Relocation
Relocation 12 Relocation Contact your dealer for removing and reinstalling the total unit. Moving units requires technical expertise. RWEYQ8~14T9Y1B Installer and user reference guide VRV IV water-cooled system air conditioner 4P452191-1B – 2020.10... -
Page 44: Disposal
Disposal 13 Disposal This unit uses hydrofluorocarbon. Contact your dealer when discarding this unit. NOTICE Do NOT try to dismantle the system yourself: dismantling of the system, treatment of the refrigerant, oil and other parts MUST comply with applicable legislation. Units MUST be treated at a specialised treatment facility for reuse, recycling and recovery. -
Page 45: Technical Data
Follow the steps below to consult the Energy Label – Lot 21 data of the unit and outdoor/indoor combinations. 1 Open the following webpage: https://energylabel.daikin.eu/ 2 To continue, choose: ▪ "Continue to Europe" for the international website. ▪ "Other country" for a country related site. -
Page 46: For The Installer
For the installer RWEYQ8~14T9Y1B Installer and user reference guide VRV IV water-cooled system air conditioner 4P452191-1B – 2020.10... -
Page 47: About The Box
15.6 To remove the transportation stay ............................15.1 About LOOP BY DAIKIN is part of Daikin's wider commitment to reduce our environmental footprint. With we want to create a circular economy for refrigerants. One of the actions to achieve this, is the reuse of reclaimed refrigerant in VRV units produced and sold in Europe. -
Page 48: To Unpack The Outdoor Unit
About the box a Packaging material b Belt sling c Opening d Protector NOTICE Use a belt sling of ≤20 mm wide that adequately bears the weight of the unit. ▪ A forklift can only be used for transport as long as the unit remains on its pallet as shown above. -
Page 49: To Remove The Accessories From The Outdoor Unit
About the box 15.4 To remove the accessories from the outdoor unit Make sure that all accessories are available in the unit. 1× 1× 1× 1× 1× 1× 1× 1× 1× a General safety precautions b Installation manual and operation manual c Additional refrigerant charge label d Installation information sticker e Fluorinated greenhouse gases label... -
Page 50: To Remove The Transportation Stay
About the box Accessory pipes (mm) Øa Øb Øc Ød High pressure/Low 25.4 25.4 25.4 15.9 pressure gas pipe 19.1 ▪ Front connection Øa Øb 22.2 ▪ Top connection Øc Ød (a) Braze the straight accessory pipe onto the L-shaped accessory pipe in order to get the correct diameter to connect the field pipes (for front connection). -
Page 51: About The Units And Options
About the units and options 16 About the units and options In this chapter 16.1 Overview: About the units and options ..........................16.2 Identification label: Outdoor unit............................16.3 About the outdoor unit ................................16.4 System layout..................................16.5 Combining units and options..............................16.5.1 About combining units and options........................ -
Page 52: About The Outdoor Unit
About the units and options Code Explanation European market Minor model change indication 16.3 About the outdoor unit This installation manual concerns the VRV IV water-cooled system air conditioner. The unit is full inverter driven, and can be used for cooling, heat pump and heat recovery applications. - Page 53 About the units and options e Branch selector box (BP*) (required to connect Residential Air (RA) or Sky Air (SA) direct expansion (DX) indoor units) f Residential Air (RA) direct expansion (DX) indoor units g User interface h Wireless user interface i Cool/heat changeover remote control switch j Water system connection Heat recovery system...
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Page 54: Combining Units And Options
About the units and options c Water piping d Dry cooler e Brine loop f Closed cooling tower g Boiler 16.5 Combining units and options INFORMATION Certain options might not be available in your country. 16.5.1 About combining units and options NOTICE To be sure your system setup (unit+indoor unit(s)) will work, you have to consult the latest technical engineering data for VRV IV water-cooled. -
Page 55: Possible Options For The Outdoor Unit
About the units and options RWEYQ14 Possible standard combinations of units RWEYQ16~42 consists of 2 or 3 RWEYQ8~14 units. RWEYQ16 = RWEYQ8 + 8 RWEYQ18 = RWEYQ8 + 10 RWEYQ20 = RWEYQ10 + 10 RWEYQ22 = RWEYQ10 + 12 RWEYQ24 = RWEYQ12 + 12 RWEYQ26 = RWEYQ12 + 14 RWEYQ28 = RWEYQ14 + 14 RWEYQ30 = RWEYQ10 +10 + 10... - Page 56 About the units and options In case of heat recovery system Description Model name Refnet joint KHRQ23M20T KHRQ23M29T9 KHRQ23M64T KHRQ23M75T Outdoor multi connection piping kit In case of heat pump system Number of outdoor units Model name BHFQ22P1007 BHFQ22P1517 In case of heat recovery system Number of outdoor units Model name BHFQ23P907...
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Page 57: Unit Installation
Unit installation 17 Unit installation In this chapter 17.1 Preparing the installation site ..............................17.1.1 Installation site requirements of the outdoor unit ....................17.1.2 Securing safety against refrigerant leaks....................... 17.2 Opening the unit..................................17.2.1 About opening the units ............................17.2.2 To open the outdoor unit ............................ - Page 58 Unit installation NOTICE The equipment described in this manual may cause electronic noise generated from radio-frequency energy. The equipment complies to specifications that are designed to provide reasonable protection against such interference. However, there is no guarantee that interference will not occur in a particular installation. It is therefore recommended to install the equipment and electric wires in such a way that they keep a proper distance from stereo equipment, personal computers, etc.
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Page 59: Securing Safety Against Refrigerant Leaks
Unit installation 17.1.2 Securing safety against refrigerant leaks About safety against refrigerant leaks The installer and system specialist shall secure safety against leakage according to local regulations or standards. The following standards may be applicable if local regulations are not available. This system uses R410A as refrigerant. -
Page 60: Opening The Unit
Unit installation 2 Calculate the volume of the room (m³) where the indoor unit is installed. In one of the following cases, calculate the volume of (D), (E) as a single room or as the smallest room: When there are no smaller room divisions: When there is a room division that has an opening sufficiently large to permit free air flow. -
Page 61: To Open The Outdoor Unit
Unit installation 17.2.2 To open the outdoor unit DANGER: RISK OF ELECTROCUTION DANGER: RISK OF BURNING/SCALDING 11× Once the front plate A is open, the electrical component box can be accessed. See "17.2.3 To open the electrical component box of the outdoor unit" [ 61]. -
Page 62: Mounting The Outdoor Unit
Unit installation 17.3 Mounting the outdoor unit 17.3.1 To provide the installation structure Make sure the unit is installed level on a sufficiently strong base to prevent vibration and noise. 800 mm 600 mm ▪ Fasten the unit in place using four foundation bolts M12. It is best to screw in the foundation bolts until their length remains 20 mm above the foundation surface. -
Page 63: Piping Installation
Piping installation 18 Piping installation In this chapter 18.1 Preparing refrigerant piping ..............................18.1.1 Refrigerant piping requirements ........................... 18.1.2 Refrigerant piping insulation..........................18.1.3 To select the piping size ............................18.1.4 To select refrigerant branch kits..........................18.1.5 About the piping length ............................18.1.6 Single outdoor units and standard multi-outdoor-unit combinations .............. -
Page 64: Preparing Refrigerant Piping
Piping installation 18.1 Preparing refrigerant piping 18.1.1 Refrigerant piping requirements NOTICE The refrigerant R410A requires strict cautions for keeping the system clean, dry and tight. ▪ Clean and dry: foreign materials (including mineral oils or moisture) should be prevented from getting mixed into the system. ▪... -
Page 65: Refrigerant Piping Insulation
Piping installation 18.1.2 Refrigerant piping insulation ▪ Use polyethylene foam as insulation material: with a heat transfer rate between 0.041 and 0.052 W/mK (0.035 and 0.045 kcal/mh°C) with a heat resistance of at least 120°C ▪ Insulation thickness Ambient temperature Humidity Minimum thickness ≤30°C 75% to 80% RH... - Page 66 Piping installation 1,2 VRV DX indoor unit 3 Branch selector unit (BS*) 4 Cooling only VRV indoor unit A~E Piping a,b Indoor branch kit x,y Outdoor multi connection kit A, B, C: Piping between outdoor unit and (first) refrigerant branch kit Choose from the following table in accordance with the outdoor unit total capacity type, connected downstream.
- Page 67 Piping installation In case of heat pump system Indoor unit capacity index Piping outer diameter size (mm) Gas pipe Liquid pipe <150 15.9 150≤x<200 19.1 200≤x<290 22.2 290≤x<420 28.6 12.7 420≤x<640 15.9 640≤x<920 34.9 19.1 ≥920 41.3 In case of heat recovery system Indoor unit capacity index Piping outer diameter size (mm) Liquid pipe...
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Page 68: To Select Refrigerant Branch Kits
Piping installation Size up HP class Liquid piping outer diameter size (mm) 9.5 → 12.7 12+14 12.7 → 15.9 18~22 15.9 → 19.1 26~34 19.1 → 22.2 36~42 F: Piping between refrigerant branch kit and branch selector box (BP box) Heat pump system in case of single outdoor unit Pipe size for direct connection on branch selector box (BP*) must be based on the total capacity of the connected indoor units (only in case RA ... -
Page 69: About The Piping Length
Piping installation Outdoor unit capacity 2 pipes 3 pipes type (HP) 8+10 KHRQ22M29T9 KHRQ23M29T9 12~22 KHRQ22M64T KHRQ23M64T 24~42 KHRQ22M75T KHRQ23M75T ▪ For refnet joints other than the first branch (example refnet joint b), select the proper branch kit model based on the total capacity index of all indoor units connected after the refrigerant branch. - Page 70 Piping installation Definitions Term Definition Actual piping length Pipe length between outdoor and indoor units Equivalent piping length Pipe length between outdoor and indoor units, including the equivalent length of the piping accessories Total piping length Total piping length, from the outdoor to all indoor units (a) If the system is a multi outdoor installation, re-read "the first outdoor unit branch as seen from the indoor unit".
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Page 71: Single Outdoor Units And Standard Multi-Outdoor-Unit Combinations
Piping installation (c) If the outdoor unit is connected to VRV DX indoor units only, the height difference between indoor units (H2) can be increased to 30 m. In all other cases, the H2 is limited to 15 m. Then The outdoor unit is ▪... - Page 72 Piping installation Pipe Maximum length (actual/ equivalent) Longest pipe from the outdoor unit or the last multi- 165 m/190 m outdoor piping branch (1+2+6, 1+3, 1+2+5) Longest pipe after the first branch (3, 2+6, 2+5) 40 m/— In case of a multi-outdoor setup: longest pipe from 10 m/13 m the outdoor unit to the last multi-outdoor piping branch (4)
- Page 73 Piping installation Connection with only VRV DX and RA DX indoor units a Outdoor unit b VRV DX indoor unit c RA DX indoor unit d Branch selector box (BP*) (1) This connection is only allowed on a single outdoor unit installation. Pipe Maximum length (actual/ equivalent)
- Page 74 Piping installation In case of heat recovery system Connection with VRV DX indoor units and air handling units a Outdoor unit b VRV DX indoor unit c Branch selector unit (BS*) d Multi branch selector unit (BS*) e EKEXV kit f Air handling unit (AHU) Pipe Maximum length (actual/...
- Page 75 Piping installation Connection with VRV DX indoor units and Hydrobox units a Outdoor unit b VRV DX indoor unit c Multi branch selector unit (BS*) d Low temperature (LT) Hydrobox unit e High temperature (HT) Hydrobox unit Pipe Maximum length (actual/ equivalent) Longest pipe from the outdoor unit or the last multi- 120 m/140 m...
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Page 76: Multiple Outdoor Units: Possible Layouts
Piping installation Connection with only VRV DX indoor units a Outdoor unit b VRV DX indoor unit c Multi branch selector unit (BS*) d Single branch selector unit (BS*) Longest pipe 165 m/190 m from the outdoor unit or the last multi- outdoor piping branch (1+2,... - Page 77 Piping installation Pattern 1 Pattern 2 a To indoor unit b Piping between outdoor units X Not allowed (oil remains in piping) O Allowed ▪ If the piping length between the outdoor unit connecting pipe kit or between the outdoor units exceeds 2 m, create a rise of 200 mm or more in the gas line within a length of 2 m from the kit.
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Page 78: Preparing Water Piping
Piping installation 18.2 Preparing water piping 18.2.1 Water quality requirements Cooling water Hot water system Tendency circulation system Item Circulation Make-up Circulation Make-up Corrosion Scale water water water water Standard items pH (25°C) 6.5~8.2 6.0~8.0 7.0~8.0 ○ ○ Electrical conductivity (mS/m) (25°C) <80 <30 <30... - Page 79 Piping installation NOTICE In case of plastic pipes, make sure they are fully oxygen diffusion tight according to DIN 4726. The diffusion of oxygen into the piping can lead to excessive corrosion. ▪ Connecting piping – Legislation. Make all piping connections in accordance with the applicable legislation and the instructions in the "Installation"...
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Page 80: Handling The Brazed Plate Heat Exchanger
Piping installation ▪ Water piping – Tightening torque. Securely tighten the water piping with a tightening torque of ≤300 N•m. Overtightening results in damage to the unit. ▪ Field supply components – Water. Only use materials that are compatible with water used in the system and with the materials used in the outdoor unit. ▪... -
Page 81: About The Water Flow Rate
Piping installation a Water inlet piping b Filter (accessory) c Air purge plug (for joint use with cleaning port) (field supply) d Cleaning device e Filter for pump (field supply) f Automatic air purge valve (field supply) g Water outlet piping h Joint use with water draining plug i Plate heat exchanger 18.2.4 About the water flow rate... - Page 82 Piping installation The valve/pump input signal is based on a variable 2~10 V DC control output signal coming from the outdoor unit. The valve or pump should have a linear control characteristic between unit output signal and flow rate according to the example graph below.
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Page 83: Connecting The Refrigerant Piping
Piping installation During the initialization process of the outdoor unit, the output signal will trigger a flow rate of B (50%). The installer should make sure that a flow rate can be checked in the individual hydronic system of each unit. If this value is not matching the required flow, the installer should troubleshoot the hydronic system to solve the problem and ensure the correct flow rate. -
Page 84: To Route The Refrigerant Piping
Piping installation WARNING ALWAYS recover the refrigerant. Do NOT release them directly into the environment. Use a vacuum pump to evacuate the installation. NOTICE After all the piping has been connected, make sure there is no gas leak. Use nitrogen to perform a gas leak detection. -
Page 85: To Connect The Multi Connection Piping Kit
Piping installation NOTICE Precautions when connecting field piping. Add brazing material as shown in the figure. ≤Ø25.4 >Ø25.4 NOTICE ▪ Be sure to use the supplied accessory pipes when carrying out piping work in the field. ▪ Be sure that the field installed piping does not touch other pipes, the bottom panel or side panel. -
Page 86: To Connect The Refrigerant Branching Kit
Piping installation 18.3.6 To connect the refrigerant branching kit For installation of the refrigerant branching kit, refer to the installation manual delivered with the kit. ▪ Mount the refnet joint so that it branches either horizontally or vertically. ▪ Mount the refnet header so that it branches horizontally. a Horizontal surface b Refnet joint mounted vertically c Refnet joint mounted horizontally... -
Page 87: Using The Stop Valve And Service Port
Piping installation ▪ When brazing, blow through with nitrogen to prevent creation of large quantities of oxidised film on the inside of the piping. This film adversely affects valves and compressors in the refrigerating system and prevents proper operation. ▪ Set the nitrogen pressure to 20 kPa (0.2 bar) (just enough so it can be felt on the skin) with a pressure-reducing valve. - Page 88 Piping installation b Stop valve cover c Hexagon hole d Shaft e Valve seat ▪ Do NOT apply excessive force to the stop valve. Doing so may break the valve body. 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.
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Page 89: To Remove The Spun Pipes
Piping installation ▪ After handling the stop valve, tighten the stop valve cover securely, and check for refrigerant leaks. For the tightening torque, refer to the table below. 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 90 Piping installation p < p > R410A a Pressure reducing valve b Nitrogen c Weighing scales d Refrigerant R410A tank (siphon system) e Vacuum pump f Liquid line stop valve g Gas line stop valve h High pressure/low pressure gas line stop valve A Valve A B Valve B C Valve C...
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Page 91: Checking The Refrigerant Piping
Piping installation WARNING NEVER remove the spun piping by brazing. Any gas or oil remaining inside the stop valve may blow off the spun piping. 6 Make sure that no particles remain in the pipe. Blow out any particles with compressed air. -
Page 92: Checking Refrigerant Piping: General Guidelines
Piping installation Method 2: After power ON If the system has already been powered on, activate setting [2‑21] (refer to "20.2.4 To access mode 1 or 2" [ 118]). This setting will open field expansion valves to guarantee a refrigerant piping pathway and make it possible to perform the leak test and the vacuum drying. -
Page 93: Checking Refrigerant Piping: Setup
Piping installation NOTICE Do NOT purge the air with refrigerants. Use a vacuum pump to evacuate the installation. 18.4.3 Checking refrigerant piping: Setup p < p > R410A a Pressure reducing valve b Nitrogen c Weighing scales d Refrigerant R410A tank (siphon system) e Vacuum pump f Liquid line stop valve g Gas line stop valve... -
Page 94: To Perform Vacuum Drying
Piping installation To check for leaks: Vacuum leak test 1 Evacuate the system from the liquid and gas piping to – 1 00.7 kPa (–1.007 bar) (5 Torr absolute) for more than 2 hours. 2 Once reached, turn off the vacuum pump and check that the pressure does not rise for at least 1 minute. -
Page 95: To Insulate The Refrigerant Piping
Piping installation INFORMATION After opening the stop valve, it is possible that the pressure in the refrigerant piping does NOT increase. This might be caused by e.g. the closed state of the expansion valve in the outdoor unit circuit, but does NOT present any problem for correct operation of the unit. -
Page 96: About Charging Refrigerant
Piping installation NOTICE In case of a multiple outdoor system, turn on the power of all outdoor units. NOTICE Be sure to turn ON the power 6 hours before operation in order to have power running to the crankcase heater and to protect the compressor. NOTICE If operation is performed within 12 minutes after the indoor and outdoor units are powered on, the compressor will not operate before the communication is... - Page 97 Piping installation R=[(X ×Ø22.2)×0.37+(X ×Ø19.1)×0.26+(X ×Ø15.9)×0.18+ ×Ø12.7)×0.12+(X ×Ø9.5)×0.059+(X ×Ø6.4)×0.022]+A R Additional refrigerant to be charged [in kg and rounded off to 1 decimal place] Total length [m] of liquid piping size at Øa 1...6 A Parameter A Parameter A. If the total indoor unit capacity connection ratio (CR)>100%, charge an additional 0.5 kg of refrigerant per outdoor unit.
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Page 98: To Charge Refrigerant
Piping installation 18.5.4 To charge refrigerant Follow the steps as described below. Pre-charging refrigerant 1 Calculate the additional amount of refrigerant to be added using the formula mentioned in "18.5.3 To determine the additional refrigerant amount" [ 96]. 2 The first 10 kg of additional refrigerant can be pre-charged without outdoor unit operation: Then The additional refrigerant amount is... - Page 99 Piping installation Then The total amount of refrigerant Close valve B, disconnect the could not be charged by pre- manifold from the liquid line, and charging perform steps 5~6. INFORMATION If the total additional refrigerant amount was reached in step 4 (by pre-charging only), record the amount of refrigerant that was added on the additional refrigerant charge label provided with the unit and attach it on the back side of the front panel.
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Page 100: Checks After Charging Refrigerant
Piping installation 8 Activate outdoor unit setting [2‑20]=1 to start manual refrigerant charge mode. Refer to "20.2.8 Mode 2: Field settings" [ 122] for details. Result: The unit will start operation. 9 Valve A can be opened. Charging of remaining additional refrigerant can be done. -
Page 101: Connecting Water Piping
Piping installation NOTICE Applicable legislation on fluorinated greenhouse gases requires that the refrigerant charge of the unit is indicated both in weight and CO equivalent. Formula to calculate the quantity in CO equivalent tonnes: GWP value of the refrigerant × total refrigerant charge [in kg] / 1000 Use the GWP value mentioned on the refrigerant charge label. -
Page 102: To Fill The Water Circuit
Piping installation 18.6.4 To fill the water circuit 1 Connect the water supply hose to the fill valve (field supply). 2 Open the fill valve. 3 Run the pump ONLY and make sure that no air has been caught in the water circulation system otherwise the plate heat exchanger will freeze. -
Page 103: Electrical Installation
Electrical installation 19 Electrical installation In this chapter 19.1 About connecting the electrical wiring ..........................103 19.1.1 Precautions when connecting the electrical wiring ....................103 19.1.2 Field wiring: Overview............................105 19.1.3 About the electrical wiring............................. 105 19.1.4 About electrical compliance ..........................107 19.1.5 Safety device requirements ........................... - Page 104 Electrical installation WARNING ▪ ONLY use copper wires. ▪ Make sure the field wiring complies with the applicable legislation. ▪ All field wiring MUST be performed in accordance with the wiring diagram supplied with the product. ▪ NEVER squeeze bundled cables and make sure they do NOT come in contact with the piping and sharp edges.
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Page 105: Field Wiring: Overview
Electrical installation 19.1.2 Field wiring: Overview In case of heat pump system a Field power supply (with earth leakage protector) b Main switch c Earth connection d Outdoor unit e Indoor unit f User interface g Indoor power supply wiring (sheathed cable) (230 V) h Transmission wiring (sheathed cable) (16 V) i Outdoor power supply wiring (sheathed cable) Power supply 3N~ 50 Hz... - Page 106 Electrical installation NOTICE ▪ Be sure to keep the power line and transmission line apart from each other. Transmission wiring and power supply wiring may cross, but may not run parallel. ▪ Transmission wiring and power supply wiring may not touch internal piping (except the inverter PCB cooling pipe) in order to avoid wire damage due to high temperature piping.
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Page 107: About Electrical Compliance
Electrical installation In case of heat recovery system a Outdoor unit b Indoor unit c Main line d Branch line 1 e Branch line 2 f Branch line 3 g No branch is allowed after branch h Central user interface (etc...) A Outdoor/indoor transmission wiring B Master/slave transmission wiring For the above wiring, always use vinyl cords with 0.75 mm²... -
Page 108: Safety Device Requirements
Electrical installation 19.1.5 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. For standard combinations 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 109: To Route And Fix The Transmission Wiring
Electrical installation Example Combining the RWEYQ30T9 by using the RWEYQ8T9, RWEYQ10T9, and RWEYQ12T9. ▪ Minimum circuit ampacity of the RWEYQ8T9=15.5 A ▪ Minimum circuit ampacity of the RWEYQ10T9=16.4 A ▪ Minimum circuit ampacity of the RWEYQ12T9=19.4 A Accordingly, the minimum circuit ampacity of the RWEYQ30T9=15.5+16.4+19.4=51.3 A Multiply the above result by 1.1: (51.3 A×1.1)=56.43 A ⇒... - Page 110 Electrical installation In case of heat pump system F1 F2 F1 F2 Q1 Q2 Q1 Q2 Q1 Q2 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 a Outdoor unit PCB (A1P) b Unit A (master outdoor unit)
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Page 111: To Finish The Transmission Wiring
Electrical installation 19.4 To finish the transmission wiring After installing the transmission wires inside the unit, wrap them along with the on- site refrigerant pipes using finishing tape, as shown in figure below. a Liquid pipe b Gas pipe c Finishing tape d High pressure/low pressure gas pipe e Transmission wiring (F1/F2) f Insulator... -
Page 112: To Connect The Power Supply
Electrical installation 19.6 To connect the power supply NOTICE Never connect the power supply to transmission wiring terminal block. Otherwise the entire system may break down. CAUTION ▪ When connecting the power supply: connect the earth cable first, before making the current-carrying connections. -
Page 113: To Connect The Optional Wiring
Electrical installation L1 L2 L2 N 19.7 To connect the optional wiring For the optional wiring use insulated wires of a rated voltage of 250 V or higher and a minimal cross section of 1.25 mm² for single core wires and 0.75 mm² for multicore wires. - Page 114 Electrical installation In case of a multi outdoor unit system, install one or more flow switches depending on the installation of the water system so that water flow is guaranteed under every condition. NOTICE If the flow switch is installed in a variable water flow system, take into account the inertia of the water flow.
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Page 115: To Check The Insulation Resistance Of The Compressor
Electrical installation 19.8 To check the insulation resistance of the compressor NOTICE If, after installation, refrigerant accumulates in the compressor, the insulation resistance over the poles can drop, but if it is at least 1 MΩ, then the unit will not break down. -
Page 116: Configuration
Configuration 20 Configuration In this chapter 20.1 Overview: Configuration................................. 116 20.2 Making field settings................................116 20.2.1 About making field settings ........................... 116 20.2.2 Field setting components............................117 20.2.3 To access the field setting components ........................ 118 20.2.4 To access mode 1 or 2............................118 20.2.5 To use mode 1................................ -
Page 117: Field Setting Components
Configuration ▪ "20.2.2 Field setting components" [ 117] ▪ "20.2.3 To access the field setting components" [ 118] PC configurator For VRV IV heat recovery 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 118: To Access The Field Setting Components
Configuration 20.2.3 To access the field setting components It is not required to open the complete electronic component box to access the push buttons on the PCB and read out the 7‑segment display(s). To access you can remove the front inspection cover of the front plate (see figure). Now you can open the inspection cover of the electrical component box front plate (see figure). -
Page 119: To Use Mode 1
Configuration Stage Display When no trouble occurs: lighted as indicated (8~10 min). Ready for operation: blank display indication as indicated. 7‑segment display indications: Blinking In case of malfunction, the malfunction code is displayed on the indoor unit user interface and the outdoor unit 7‑segment display. Solve the malfunction code accordingly. -
Page 120: To Use Mode 2
Configuration Example: Checking the content of parameter [1‑10] (to know how many indoor units are connected to the system). [A‑B]=C in this case defined as: A=1; B=10; C=the value we want to know/monitor: 1 Make sure the 7‑segment display indication is in the default situation (normal operation). -
Page 121: Mode 1: Monitoring Settings
Configuration 2 Push BS1 for over 5 seconds. Result: Mode 2 is accessed: 3 Push BS2 12 times. Result: Mode 2 setting 12 is addressed: 4 Push BS3 1 time; the value which is returned (depending on the actual field situation), is the status of the setting. In the case of [2‑12], default value is "0", which means the function is not active. -
Page 122: Mode 2: Field Settings
Configuration ▪ The second method is to enable power consumption limitation based on an external input. For this operation an optional accessory is required. [1‑5] [1‑6] Shows: ▪ [1‑5]: The current T target parameter position. ▪ [1‑6]: The current T target parameter position. - Page 123 Configuration [2‑9] target (°C) 41°C 42°C 43°C 44°C 45°C 6 (default) 46°C 49°C [2‑12] Enable the power consumption limitation via external control adaptor (DTA104A61/62). If the system needs to be running under power consumption limitation conditions when an external signal is sent to the unit, this setting should be changed. This setting will only be effective when the optional external control adaptor (DTA104A61/62) is installed.
- Page 124 Configuration [2‑21] Description Activated. To stop the refrigerant recovery/vacuuming mode, push BS3. If BS3 is not pushed, the system will remain in refrigerant recovery/vacuuming mode. [2‑23] Variable refrigerant temperature (VRT) control [2‑23] VRT control 0 (default) Activated both cooling and heating Activated heating only Activated cooling only Deactivated...
- Page 125 Configuration [2‑30] Power consumption limitation (approximately) 3 (default) [2‑31] Power consumption limitation level (step 2) via the external control adaptor (DTA104A61/62). If the system needs to be running under power consumption limitation conditions when an external signal is sent to the unit, this setting defines the level power consumption limitation that will be applied for step 2.
- Page 126 Configuration [2‑50] Description 0 (default) No brine: water. Extended range impossible. Use brine: Ethylene Glycol (20%) or Propylene Glycol (20%). Extended range possible. Use brine: Ethylene Glycol (30%) or Propylene Glycol (30%). Extended range possible. Use brine: Ethylene Glycol (40%) or Propylene Glycol (40%).
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Page 127: To Connect The Pc Configurator To The Outdoor Unit
Configuration This setting is used in conjunction with setting [2‑9]. [2‑82] Heating comfort setting 1 (default) Mild Quick Powerful 20.2.9 To connect the PC configurator to the outdoor unit X27A a PC b Cable (EKPCCAB*) c Outdoor unit main PCB RWEYQ8~14T9Y1B Installer and user reference guide VRV IV water-cooled system air conditioner... -
Page 128: Commissioning
21 Commissioning NOTICE General commissioning checklist. Next to the commissioning instructions in this chapter, a general commissioning checklist is also available on the Daikin Business Portal (authentication required). The general commissioning checklist is complementary to the instructions in this chapter and can be used as a guideline and reporting template during the commissioning and hand-over to the user. -
Page 129: Checklist Before Commissioning
Commissioning CAUTION Do NOT insert fingers, rods or other objects into the air inlet or outlet. Do NOT remove the fan guard. When the fan is rotating at high speed, it will cause injury. INFORMATION During the first running period of the unit, the required power may be higher than stated on the nameplate of the unit. -
Page 130: About The Test Run
Commissioning Pipe size and pipe insulation Be sure that correct pipe sizes are installed and that the insulation work is properly executed. Stop valves Be sure that the stop valves are open on both liquid and gas side. Damaged equipment Check the inside of the unit for damaged components or squeezed pipes. -
Page 131: To Perform A Test Run
Commissioning In case Hydrobox units are present in the system, the pipe length check and the refrigerant situation check will not be performed. ▪ Abnormalities on indoor units cannot be checked for each unit separately. After the test operation is finished, check the indoor units one by one by performing a normal operation using the user interface. -
Page 132: Correcting After Abnormal Completion Of The Test Run
Commissioning 5 Check the test operation results on the outdoor unit 7‑segment display. Completion Description Normal completion No indication on the 7‑segment display (idle). Abnormal completion Indication of malfunction code on the 7‑segment display. Refer to "21.6 Correcting after abnormal completion of the test run" [ 132] to take actions for correcting the... -
Page 133: Maintenance And Service
Maintenance and service 22 Maintenance and service NOTICE Maintenance MUST be done by an authorized installer or service agent. We recommend performing maintenance at least once a year. However, applicable legislation might require shorter maintenance intervals. NOTICE Applicable legislation on fluorinated greenhouse gases requires that the refrigerant charge of the unit is indicated both in weight and CO equivalent. -
Page 134: Maintenance Of The Plate Heat Exchanger
Maintenance and service 22.2 Maintenance of the plate heat exchanger The performance of a plate heat exchanger may decline due to scale accumulation. It may be damaged by freezing due to the decrease in the flow rate. For this reason, it is necessary to carry out programmed maintenance at regular intervals in order to prevent scale. -
Page 135: About Service Mode Operation
Maintenance and service 22.3 About service mode operation Refrigerant recovery operation/vacuuming operation is possible by applying setting [2‑21]. Refer to "20.2 Making field settings" [ 116] for details how to set mode 2. When vacuuming/recovery mode is used, check very carefully what should be vacuumed/recovered before starting. -
Page 136: Troubleshooting
Troubleshooting 23 Troubleshooting In this chapter 23.1 Solving problems based on error codes..........................136 23.1 Solving problems based on error codes In case of a displayed malfunction code, perform correcting actions as explained in the malfunction code table. After correcting the abnormality, press BS3 to reset the malfunction code and retry operation. -
Page 137: Disposal
Disposal 24 Disposal NOTICE Do NOT try to dismantle the system yourself: dismantling of the system, treatment of the refrigerant, oil and other parts MUST comply with applicable legislation. Units MUST be treated at a specialised treatment facility for reuse, recycling and recovery. RWEYQ8~14T9Y1B Installer and user reference guide VRV IV water-cooled system air conditioner... -
Page 138: Technical Data
Technical data 25 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). In this chapter 25.1... -
Page 139: Piping Diagram: Outdoor Unit
Technical data 25.2 Piping diagram: Outdoor unit SENPH SENPL 4D108945A Charge port Stop valve (with service port ∅7.9 mm flare connection) Cooling water inlet Cooling water outlet Charge port / Service port Filter Check valve Pressure relief valve Solenoid valve Capillary tube Electronic expansion valve 4‑way valve Propeller fan... -
Page 140: Wiring Diagram: Outdoor Unit
Technical data High pressure switch Oil separator Accumulator Compressor Double tube heat exchanger Liquid receiver Thermistor 25.3 Wiring diagram: Outdoor unit The wiring diagram is delivered with the unit, located at the inside of the service cover. Notes to go through before starting the unit English Translation Notes to go through before starting the... - Page 141 Technical data Legend Main PCB Noise filter PCB Inverter PCB SUB PCB Adapter PCB Cool/heat selector PCB BS* (A1P) Push buttons (mode, set, return) C* (A3P) Capacitor DS* (A1P) DIP switch E1HC Crankcase heater F1S (A2P) Surge arrestor F1U (A4P) Fuse (T, 3.15 A, 250 V) F401U (A2P) Fuse (T, 6.3 A, 250 V)
- Page 142 Technical data SEG* (A1P) 7-segment display Leakage current detection sensor V1R (A3P) IGBT power module V2R (A3P) Diode module X66A Connector (remote switching cool/heat selector) PCB connector Terminal strip X*M (A*P) Terminal strip on PCB Connector Electronic expansion valve Solenoid valve Noise filter (ferrite core) Noise filter Optional...
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Page 143: Glossary
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 the product according to the instructions in the accompanying documentation. - Page 144 4P452191-1B 2020.10 Verantwortung für Energie und Umwelt...
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