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Related Manuals for Daikin LREN10A Y1B Series
Summary of Contents for Daikin LREN10A Y1B Series
- Page 1 Installer and user reference guide CO₂ ZEAS outdoor unit and capacity up unit LREN8A▲Y1B▼ LRNUN5A▲Y1▼ ▲= 1, 2, 3, …, 9 ▼= , , 1, 2, 3, …, 9 LREN10A▲Y1B▼ LREN12A▲Y1B▼...
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Page 2: Table Of Contents
Table of contents Table of contents 1 About the documentation About this document..............................2 General safety precautions About the documentation.............................. 2.1.1 Meaning of warnings and symbols........................ For the installer ................................2.2.1 General................................2.2.2 Installation site............................... 2.2.3 Refrigerant — in case of R744........................2.2.4 Electrical................................. - Page 3 Table of contents 14.1.2 Additional installation site requirements of the outdoor unit in cold climates ........... 14.1.3 Additional installation site requirements for CO₂ refrigerant ..............14.2 Opening and closing the unit ............................14.2.1 About opening the units ..........................14.2.2 To open the outdoor unit ..........................14.2.3 To open the switch box of the outdoor unit ....................
- Page 4 Table of contents 17.5 To charge refrigerant ..............................123 17.6 To fix the refrigerant charge label ..........................124 18 Finishing the outdoor unit installation 18.1 To check the insulation resistance of the compressor....................125 19 Configuration 19.1 Making field settings ..............................126 19.1.1 About making field settings ...........................
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Page 5: About The Documentation
A subset of the latest technical data is available on the regional Daikin website (publicly accessible). ▪ The full set of the latest technical data is available on the Daikin Business Portal (authentication required). LREN8~12A + LRNUN5A Installer and user reference guide CO₂... -
Page 6: General Safety Precautions
General safety precautions 2 General safety precautions 2.1 About the documentation ▪ The original instructions are written in English. All other languages are translations of the original instructions. ▪ The precautions described in this document cover very important topics, follow them carefully. -
Page 7: For The Installer
WARNING 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 unless otherwise specified. WARNING Make sure installation, testing and applied materials comply with applicable legislation (on top of the instructions described in the Daikin documentation). -
Page 8: Installation Site
General safety precautions CAUTION Wear adequate personal protective equipment (protective gloves, safety glasses,…) when installing, maintaining or servicing the system. CAUTION Do NOT touch the air inlet or aluminium fins of the unit. CAUTION ▪ Do NOT place any objects or equipment on top of the unit. ▪... -
Page 9: Refrigerant - In Case Of R744
WARNING Make sure installation, servicing, maintenance and repair comply with instructions from Daikin and with applicable legislation (for example national gas regulation) and are executed ONLY by authorised persons. NOTICE ▪... - Page 10 General safety precautions WARNING Take sufficient precautions in case of refrigerant leakage. If refrigerant gas leaks, ventilate the area immediately. Possible risks: ▪ Carbon dioxide poisoning ▪ Asphyxiation WARNING Make sure there is no oxygen in the system. Refrigerant may ONLY be charged after performing the leak test and the vacuum drying.
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Page 11: Electrical
General safety precautions ▪ Only use tools exclusively for the refrigerant type used in the system, this to ensure pressure resistance and prevent foreign materials from entering into the system. ▪ Open refrigerant cylinders slowly. 2.2.4 Electrical DANGER: RISK OF ELECTROCUTION ▪... - Page 12 General safety precautions CAUTION ▪ When connecting the power supply: connect the earth cable first, before making the current-carrying connections. ▪ When disconnecting the power supply: disconnect the current-carrying cables first, before separating the earth connection. ▪ The length of the conductors between the power supply stress relief and the terminal block itself MUST be as such that the current-carrying wires are tautened before the earth wire is in case the power supply is pulled loose from the stress relief.
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Page 13: Specific Installer Safety Instructions
WARNING Make sure installation, servicing, maintenance, repair and applied materials follow the instructions from Daikin (including all documents listed in “Documentation set”) and, in addition, comply with applicable legislation and are performed by qualified persons only. In Europe and areas where IEC standards apply, EN/IEC 60335-2-40 is the applicable standard. - Page 14 Specific installer safety instructions "14 Unit installation" [ 57]) Unit installation (see DANGER: RISK OF BURNING/SCALDING DANGER: RISK OF ELECTROCUTION DANGER: RISK OF ELECTROCUTION Do NOT leave the unit unattended when the service cover is removed. WARNING Follow the service space dimensions in this manual to install the unit correctly. See "14.1.1 Installation site requirements of the outdoor unit" [ 58].
- Page 15 Specific installer safety instructions CAUTION This equipment is NOT intended for use in residential locations and will NOT guarantee to provide adequate protection to radio reception in such locations. CAUTION Excessive concentrations of refrigerant R744 (CO ) in a closed room can lead to unconsciousness and oxygen deficiency.
- Page 16 Specific installer safety instructions WARNING ONLY connect the outdoor unit to showcases or blower coils with a design pressure: ▪ At the high pressure side (liquid side) of 90 bar gauge. ▪ At the low pressure side (gas side) of 60 bar gauge (is possible with safety valve at field gas piping).
- Page 17 Specific installer safety instructions WARNING Before putting the system into service, check if all field supplied components or indoor units comply with pressure test specifications of EN378-2. If you are not sure, it is recommended to perform the test below. CAUTION NEVER bend high pressure piping! Bending can reduce the pipe thickness and thus weaken the piping.
- Page 18 Specific installer safety instructions WARNING Provide adequate measures to prevent that the unit can be used as a shelter by small animals. Small animals that make contact with electrical parts can cause malfunctions, smoke or fire. WARNING ▪ If the power supply has a missing or wrong N-phase, equipment might break down.
- Page 19 Specific installer safety instructions "17 Charging refrigerant" [ 119]) Charging refrigerant (see WARNING Charging of refrigerant MUST be in accordance with the instructions from this manual. See "17 Charging refrigerant" [ 119]. WARNING ▪ ONLY use R744 (CO ) as refrigerant. Other substances may cause explosions and accidents.
- Page 20 Specific installer safety instructions WARNING Commissioning MUST be in accordance with the instructions from this manual. See "20 Commissioning" [ 131]. CAUTION Do NOT perform the test operation while working on the indoor unit(s). When performing the test operation, NOT ONLY the outdoor unit, but the connected indoor unit will operate as well.
- Page 21 Specific installer safety instructions DANGER: RISK OF BURNING/SCALDING WARNING ▪ When carrying out an inspection on the switch box of the unit, ALWAYS make sure that the unit is disconnected from the mains. Turn off the respective circuit breaker. ▪ When a safety device was activated, stop the unit and find out why the safety device was activated before resetting it.
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Page 22: For The User
For the user LREN8~12A + LRNUN5A Installer and user reference guide CO₂ ZEAS outdoor unit and capacity up unit 4P704142-1C – 2024.12... -
Page 23: User Safety Instructions
User safety instructions 4 User safety instructions Always observe the following safety instructions and regulations. 4.1 General WARNING If you are NOT sure how to operate the unit, contact your installer. WARNING This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning... -
Page 24: 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: dismantling the system, treatment of the refrigerant, of oil and of other parts MUST be done by an authorised installer and MUST comply with applicable legislation. - Page 25 User safety instructions WARNING NEVER use a flammable spray such as hair spray, lacquer or paint near the unit. It may cause a fire. CAUTION If this unit is installed indoors, it must ALWAYS be equipped with an electrically powered safety measure such as a CO refrigerant leak detector (field supply).
- Page 26 User safety instructions "5 About the system" [ 29]) About the system (see WARNING Do NOT modify, disassemble, remove, reinstall or repair the unit yourself as incorrect dismantling or installation may cause an electrical shock or fire. Contact your dealer. Maintenance and service (see "8 Maintenance and service" [ 33])
- Page 27 User safety instructions WARNING The R744 refrigerant (CO ) inside the unit is odourless, non-flammable and normally does NOT leak. If the unit is installed indoors, ALWAYS install a CO detector according to the specifications of standard EN378. If the refrigerant leaks in high concentrations in the room, it may have negative effects on its occupants such as asphyxiation and carbon dioxide poisoning.
- Page 28 User safety instructions "9 Troubleshooting" [ 35]) Troubleshooting (see 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, electrical shock or fire. Contact your dealer. LREN8~12A + LRNUN5A Installer and user reference guide CO₂...
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Page 29: About The System
About the system 5 About the system WARNING Do NOT modify, disassemble, remove, reinstall or repair the unit yourself as incorrect dismantling or installation may cause an electrical shock or fire. Contact your dealer. NOTICE Do NOT use the system for other purposes. In order to avoid any quality deterioration, do NOT use the unit for cooling precision instruments or works of art. -
Page 30: System Layout
About the system 5.1 System layout INFORMATION The following figure is an example and may NOT completely match your system layout. a Main outdoor unit (LREN*) b Capacity up unit (LRNUN5*): only in combination with LREN12* c Safety valve (accessory bag) d Indoor unit for refrigeration (showcase) (field supply) e Indoor unit for refrigeration (blower coil) (field supply) f Safety valve (field supply) -
Page 31: Operation
Operation 6 Operation 6.1 Operation modes The system allows for only one operation mode: refrigeration. 6.2 Operation range Use the system in the following temperature ranges for safe and effective operation. Temperature type Temperature range Outdoor temperature –20~43°C DB Evaporation temperature Low temperature –40~–20°C DB Medium temperature –20~5°C DB... -
Page 32: Energy Saving And Optimum Operation
Energy saving and optimum operation 7 Energy saving and optimum operation Observe the following precautions to ensure the system operates properly. ▪ Adjust the room temperature properly for a comfortable environment. ▪ Adjust the evaporating temperature for refrigeration properly in the settings of the outdoor unit. -
Page 33: Maintenance And Service
Maintenance and service 8 Maintenance and service WARNING NEVER replace a fuse with a fuse of a wrong ampere ratings or other wires when a fuse blows out. Use of wire or copper wire may cause the unit to break down or cause a fire. -
Page 34: About The Refrigerant
Maintenance and service ▪ Clean the showcases and blower coils. Respect the maintenance tips and procedures for cleaning in the installation/operation manuals of the indoor units. ▪ Turn on the power at least 6 hours before operating the system in order to ensure smoother operation. -
Page 35: Troubleshooting
Troubleshooting 9 Troubleshooting If system malfunctions are likely to degrade the articles in the room/showcase, you can ask your installer to install an alarm (example: lamp). For more information, contact your installer. If one of the following malfunctions occurs, take the measures shown below and contact your dealer. -
Page 36: Error Codes: Overview
Troubleshooting Malfunction Measure The system operates but ▪ Check if air inlet or outlet of outdoor or indoor cooling is insufficient. unit is not blocked by obstacles. Remove any obstacles and make sure the air can flow freely. (for refrigerator and freezer indoor units) ▪... - Page 37 Troubleshooting Code Cause Solution Insufficient supply voltage Check if the supply voltage is supplied properly. Communication error between Check the connection of the the capacity up unit and the communication cables upstream outdoor unit. between the capacity up unit and outdoor unit. (Error displayed on the capacity up unit.) Communication error between...
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Page 38: Relocation
Relocation 10 Relocation Contact your dealer to remove and reinstall the entire unit. Moving units requires technical expertise. LREN8~12A + LRNUN5A Installer and user reference guide CO₂ ZEAS outdoor unit and capacity up unit 4P704142-1C – 2024.12... -
Page 39: Disposal
Disposal 11 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. LREN8~12A + LRNUN5A Installer and user reference guide CO₂... -
Page 40: For The Installer
For the installer LREN8~12A + LRNUN5A Installer and user reference guide CO₂ ZEAS outdoor unit and capacity up unit 4P704142-1C – 2024.12... -
Page 41: About The Box
About the box 12 About the box Keep the following in mind: ▪ At delivery, the unit MUST be checked for damage and completeness. Any damage or missing parts MUST be reported immediately to the claims agent of the carrier. ▪... -
Page 42: To Unpack The Outdoor Unit
About the box 12.1.2 To unpack the outdoor unit 1 Remove the packaging material from the unit. ▪ Remove the shrink foil. Take care not to damage the unit when removing the shrink foil with a cutter. a Outdoor unit b Capacity up unit ▪... -
Page 43: To Handle The Outdoor Unit
About the box 12.1.3 To handle the outdoor unit CAUTION To avoid injury, do NOT touch the air inlet or aluminium fins of the unit. 1 Unpack the outdoor unit and capacity up unit. See also "12.1.2 To unpack the outdoor unit" [ 42]. -
Page 44: To Remove The Accessories From The Outdoor Unit
About the box Outdoor unit 4 Lift the capacity up unit with a crane and 2 belts of at least 8 m long as shown in the figure below. Always use protectors to prevent belt damage and pay attention to the centre of gravity of the unit. NOTICE ▪... - Page 45 About the box c Liquid pipe, front panel (Ø15.9 mm) d Gas pipe, front panel (Ø22.2 mm) e Safety valve pipe, front panel f Insulation for the stop valve body g Square insulation for the stop valve cap h Threaded piece i Safety valve j General safety precautions k Installation and operation manual...
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Page 46: About The Units And Options
About the units and options 13 About the units and options In this chapter 13.1 Identification................................... 13.1.1 Identification label: Outdoor unit .......................... 13.2 About the outdoor unit ................................13.2.1 Labels on outdoor unit............................13.3 System layout..................................13.4 Combining units and options ..............................13.4.1 Possible options for the outdoor unit........................ -
Page 47: About The Outdoor Unit
About the units and options Capacity up unit: LR NU N 5 A7 Y1: Subcooler unit Refrigerant: R744 (CO Capacity indication in HP Model series Power supply (3~ / 50 Hz / 380~415 V) 13.2 About the outdoor unit This installation manual concerns the outdoor unit and the optional capacity up unit. -
Page 48: Labels On Outdoor Unit
About the units and options 13.2.1 Labels on outdoor unit Label about flow directions Label used for Text on label Translation The first two labels: from LRYEN10A7Y1 or From LRYEN10A7Y1 or LREN12A7Y1B to LREN12A7Y1B to Capacity up unit Refrigeration Refrigeration The third label: Gas from Refrigeration Gas from Refrigeration... - Page 49 About the units and options Text on warning label Translation Set pressure of safety valve is 90 bar g. Set pressure of safety valve is 90 bar g. If refrigerant temperature is higher than If refrigerant temperature is higher than 31°C there is a possibility that the safety 31°C there is a possibility that the safety valve will open during service or power valve will open during service or power...
- Page 50 About the units and options CAUTION WARNING ELECTRIC SHOCK CAUTION Caution when servicing the switch box 1. Before obtaining access to terminal devices, all supply circuits must be interrupted because units at standstill may be in a pre-heating mode and start automatically. 2.
- Page 51 About the units and options Text on warning label Translation 1. Before obtaining access to terminal 1. Before obtaining access to terminal devices, all supply circuits must be devices, all supply circuits must be interrupted because units at standstill interrupted because units at standstill may be in a pre-heating mode and start may be in a pre-heating mode and start automatically.
- Page 52 About the units and options Card on how to cut the spun pipe ends of the stop valve pipes Text on card Translation To cut off the spun pipe ends To cut off the spun pipe ends When the product is shipped, a small When the product is shipped, a small amount of refrigerant gas is kept inside amount of refrigerant gas is kept inside...
- Page 53 About the units and options Text on card Translation See Note. See Note. Cut off the lower part of the gas and Cut off the lower part of the gas and liquid stop valve pipes along the black liquid stop valve pipes along the black line.
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Page 54: System Layout
About the units and options 13.3 System layout INFORMATION The following figure is an example and may NOT completely match your system layout. a Main outdoor unit (LREN*) b Capacity up unit (LRNUN5*): only in combination with LREN12* c Safety valve (accessory bag) d Indoor unit for refrigeration (showcase) (field supply) e Indoor unit for refrigeration (blower coil) (field supply) f Safety valve (field supply) -
Page 55: Indoor Unit Constraints
About the units and options Communication box (BRR9B1V1) Install the modbus communication box to fully integrate your system with building control automation networks and other monitoring systems. 13.5 Indoor unit constraints WARNING ONLY the refrigeration parts that are also designed to work with R744 (CO ) shall be connected to the system. - Page 56 About the units and options Model Refrigeration total capacity Minimum Maximum LREN12* 9.3 kW (60%) 15.5 kW (100%) LREN12* + LRNUN5* 10.4 kW (60%) 17.3 kW (100%) Te: Evaporate temperature Ta: Ambient temperature Low load for refrigeration For the outdoor unit, a lower connection ratio (5.8~8.7 kW (40~60%)) is allowed when the following restrictions are applied: Restriction Usage range or value...
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Page 57: Unit Installation
Unit installation 14 Unit installation WARNING ▪ Install all necessary countermeasures in case of refrigerant leakage according to standard EN378 (see "14.1.3 Additional installation site requirements for CO₂ refrigerant" [ 62]). ▪ Install a CO leak detector (field supply) in every room with refrigerant piping, showcases or blower coils, and - if present - enable the function for refrigerant leak detection (see the installation manual of the indoor units). -
Page 58: Preparing The Installation Site
Unit installation 14.3.4 To install the outdoor unit ............................. 14.3.5 To remove the transportation stay........................14.3.6 To provide drainage ............................... 14.1 Preparing the installation site Choose an installation location with sufficient space to transport the unit in and out of the site. Do NOT install the unit in places often used as work place. - Page 59 Unit installation ▪ Heat exchanger fins are sharp and injury is possible. Choose an installation location where there is no risk for injury (especially in areas where children play). Refrigerant and ventilation CAUTION Excessive concentrations of refrigerant R744 (CO ) in a closed room can lead to unconsciousness and oxygen deficiency.
- Page 60 Unit installation a Sea wind b Building c Outdoor unit d Windbreaker Sound, electronic noise and electromagnetic disturbance ▪ Select the location of the unit in such a way that the sound generated by the unit does not disturb anyone, and the location is selected according the applicable legislation.
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Page 61: Additional Installation Site Requirements Of The Outdoor Unit In Cold Climates
Unit installation To avoid Do NOT install the unit in the following places: ▪ Sound sensitive areas (e.g. near a bedroom), so that the operation noise will cause no trouble. Note: If the sound is measured under actual installation conditions, the measured value might be higher than the sound pressure level mentioned in Sound spectrum in the data book due to environmental noise and sound reflections. -
Page 62: Additional Installation Site Requirements For Co₂ Refrigerant
Unit installation 14.1.3 Additional installation site requirements for CO₂ refrigerant NOTICE Although it is recommended to install LREN* and LRNUN5* outdoors, in some cases it might be needed to install them inside. In such cases, ALWAYS follow the indoor installation site requirements for CO refrigerant. - Page 63 Unit installation 14‒1 Description of access categories Access category Description Examples General access Rooms, parts of buildings, buildings Hospitals, courts or prisons, theatres, where: supermarkets, schools, lecture halls, public transport terminals, hotels, restaurants. ▪ sleeping facilities are provided; ▪ people restricted their movements;...
- Page 64 Unit installation ▪ safety shut-off valves ▪ safety alarm, in combination with a CO refrigerant leak detector (a safety alarm alone is NOT considered an appropriate measure where occupants are restricted in their movements) ▪ refrigerant leak detector WARNING Install the unit ONLY in locations where the doors of the occupied space are NOT tight fitting.
- Page 65 Unit installation For occupancies on the lowest underground floor of the building If the total refrigerant charge (kg) …the number of appropriate measures divided by the room volume ) is… must be at least… <RCL >RCL and ≤QLMV >QLMV and <QLAV >QLAV Value CANNOT be exceeded! For occupied spaces with a floor area exceeding 250 m...
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Page 66: Opening And Closing The Unit
Unit installation ▪ If the airflow to a space cannot be reduced to less than 10% of the maximum airflow using an airflow reducer, then that space shall be included in the volume of the smallest human occupied space. ▪ For refrigerants of safety class A1, the total volume of all the rooms cooled or heated by air from one system is used as the volume for calculation, if the air supply to each room cannot be restricted below 25% of its full supply. -
Page 67: To Open The Switch Box Of The Outdoor Unit
Unit installation DANGER: RISK OF BURNING/SCALDING 1 Remove the screws of the small front plates. 3× 8× a Outdoor unit b Capacity up unit 2 Remove the front panels. 4× × a Outdoor unit b Capacity up unit 3 Remove the small front plates of each removed front panel. 2×... -
Page 68: To Close The Outdoor Unit
Unit installation Switch boxes of the outdoor unit The switch boxes behind the left, middle and right front panel are all opened in the same way. The main switchbox is installed behind the middle panel. × Switch box of the capacity up unit 4×... -
Page 69: Mounting The Outdoor Unit
Unit installation 4× × × a Outdoor unit b Capacity up unit 3 Attach the small front plates to the front panels. 3× 8× a Outdoor unit b Capacity up unit 14.3 Mounting the outdoor unit 14.3.1 About mounting the outdoor unit Typical workflow Mounting the outdoor unit typically consists of the following stages: Providing the installation structure. - Page 70 Unit installation NOTICE The height of the foundation must at least be 150 mm from the floor. In heavy snowfall areas, this height should be increased up to the average expected snow level, depending on the installation place and condition. Outdoor unit Capacity up unit ▪...
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Page 71: To Install The Outdoor Unit
Unit installation ≥765 ≥765 (mm) Minimum foundation 1 LREN* 2 LRNUN5* Unit LREN* 1940 1102 LRNUN5* — 14.3.4 To install the outdoor unit 1 Position the unit onto the installation structure. See also: "12.1.3 To handle the outdoor unit" [ 43]. 2 Fix the unit onto the installation structure. -
Page 72: To Provide Drainage
Unit installation 1 Loosen the compressor mounting bolt. 2 Remove the screw. 3 Remove and dispose of the transportation stay. 4 Tighten the mounting bolt to 12.3 N•m of torque. 5 Remove the 2 screws. 6 Remove and dispose of the transportation stay. (12.3 N·m) 14.3.6 To provide drainage Make sure that condensation water can be evacuated properly. -
Page 73: Piping Installation
Piping installation 15 Piping installation In this chapter 15.1 Preparing refrigerant piping ..............................15.1.1 Refrigerant piping requirements ........................... 15.1.2 Refrigerant piping material............................ 15.1.3 Refrigerant piping length and height difference....................15.1.4 To select the piping size............................15.1.5 To select refrigerant branch kits..........................15.1.6 To select expansion valves for refrigeration ...................... -
Page 74: Refrigerant Piping Material
Piping installation NOTICE Foreign materials inside pipes are NOT allowed (including oils for fabrication). NOTICE The piping and other pressure-containing parts shall be suitable for refrigerant and oil. Use K65 (or equivalent) copper-iron alloy tube system for high-pressure applications with a working pressure of 90 bar gauge at the refrigeration side. NOTICE NEVER use standard hoses and manometers. - Page 75 Piping installation Requirement Limit LREN* LREN* + LRNUN5* Piping length between LREN* and Not specified, but piping must be LRNUN5* horizontal Maximum branch piping length ▪ Example refrigeration side: 50 m C+D+(E or F) c+d+(e or f) Maximum total equivalent piping length Low temperature: 150 m Example:...
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Page 76: To Select The Piping Size
Piping installation a Refrigeration indoor unit b Flow direction in refrigerant suction piping To install riser piping If the outdoor unit is installed lower than the refrigeration indoor unit, install riser piping close to the indoor unit. When the compressor of the outdoor unit starts, correctly installed riser piping will prevent liquid from flowing back to the outdoor unit. - Page 77 Piping installation 4 Indoor unit (blower coil) A~J Liquid piping a~g Gas piping H1~H3 Height difference In case the required pipe sizes (inch sizes) are not available, it is also allowed to use other diameters (mm sizes), taken the following into account: ▪...
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Page 78: To Select Refrigerant Branch Kits
Piping installation Piping size from branch to indoor unit Liquid and gas piping: outer diameter size Same size as C, D, c, d. If piping sizes of the indoor units are different, connect a reducer close to the indoor unit to align piping sizes. Piping from branch to indoor unit (C, D, E;... -
Page 79: Using Stop Valves And Service Ports
Piping installation A Liquid piping (refrigeration side): 90 bar gauge B Gas piping (refrigeration side): depends on design pressure of showcase and blower coil. For example, 60 bar gauge 1 Capacity up unit (LRNUN5*) 2 Outdoor unit (LREN* ) 3 Indoor unit (showcase) 4 Indoor unit (blower coil) 15.2 Using stop valves and service ports WARNING... -
Page 80: Overview Stop Valves And Service Ports For Connection And Charging
Piping installation 15.2.1 Overview stop valves and service ports for connection and charging a Gas stop valve CsV3 b Liquid stop valve CsV4 c Service port SP10 (gas side) d Service port SP3 (gas side) e Service port SP7 (liquid side) f Service port SP11 (gas side) g Service port SP8 (gas side) 15.2.2 Overview stop valves for maintenance... -
Page 81: To Handle The Stop Valve
Piping installation a Stop valve b Stop valve 15.2.3 To handle the stop valve Take the following guidelines into account: ▪ The gas and liquid stop valves are factory open. ▪ Make sure to keep all stop valves open during operation. ▪... -
Page 82: Tightening Torques
Piping installation 15‒2 Ball stop valve: intersection a Stop valve cap b Ball + stem and handle To open the stop valve 1 Remove the valve cap. 2 Turn counterclockwise to open the valve. 90° Result: The valve is fully open: a To outdoor unit b To indoor unit To close the stop valve... - Page 83 Piping installation ▪ After handling the service port, make sure to tighten the service port cap and the valve cap securely. ▪ Check for refrigerant leaks after tightening the service port cap and the valve cap. Parts of the service port The figure below shows the name of each part required in handling service ports.
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Page 84: Connecting The Refrigerant Piping
Piping installation 4 Add a new copper packing. 5 Apply screw lock agent or silicon sealant to the screw thread when mounting the service port cap. Without it, moisture and condensing water may penetrate and freeze between the screw thread. As a result, refrigerant may leak and the service port cap may break. -
Page 85: Precautions When Connecting The Refrigerant Piping
Piping installation 15.3.2 Precautions when connecting the refrigerant piping INFORMATION Also read the precautions and requirements in the following chapters: ▪ "2 General safety precautions" [ 6] ▪ "15.1 Preparing refrigerant piping" [ 73] DANGER: RISK OF BURNING/SCALDING CAUTION NEVER bend high pressure piping! Bending can reduce the pipe thickness and thus weaken the piping. -
Page 86: To Cut Off The Spun Pipe Ends
Piping installation 15.3.3 To cut off the spun pipe ends When the product is shipped, a small amount of refrigerant gas is kept inside the product. Therefore, the pipes contain a pressure higher than the atmospheric pressure. For safety reasons, it is necessary to release the refrigerant before cutting the spun pipe ends. -
Page 87: To Connect The Refrigerant Piping To The Outdoor Unit
Piping installation 15.3.4 To connect the refrigerant piping to the outdoor unit WARNING ONLY connect the outdoor unit to showcases or blower coils with a design pressure: ▪ At the high pressure side (liquid side) of 90 bar gauge. ▪ At the low pressure side (gas side) of 60 bar gauge (is possible with safety valve at field gas piping). - Page 88 Piping installation 2 Remove the knockout in the small front plate of the outdoor unit and, if applicable, the one of the capacity up unit. For more information, see "16.3 Guidelines for making knockout holes" [ 109]. 3 Cut off the spun pipe ends. See "15.3.3 To cut off the spun pipe ends" [ 86].
- Page 89 Piping installation 1 Remove the left front panel of the outdoor unit and, if applicable, the one of the capacity up unit. See "14.2.2 To open the outdoor unit" [ 66]. 2 Unscrew the 4 screws to remove the side plate of the outdoor unit. 4×...
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Page 90: To Braze The Pipe End
Piping installation 15.3.5 To braze the pipe end General guidelines ▪ When brazing, blow through with nitrogen to prevent creation of large quantities of oxidized film on the inside of the piping. This film adversely affects valves and compressors in the refrigerating system and prevents proper operation. ▪... - Page 91 Piping installation a Correct heating zone b Heating zone is too large. Brazing material can cause obstructions inside the piping. A running test might detect these obstructions. c Heating zone is too small. The brazed connection will not be strong and might rip. 80~85˚...
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Page 92: Guidelines To Connect T-Joints
Piping installation 90˚ a Brazing rod 15.3.6 Guidelines to connect T-joints INFORMATION Piping joints and fittings shall comply with the requirements of EN 14276-2. CAUTION ALWAYS use K65 T-joints for refrigerant branching. K65 T-joints are field supplied. Liquid piping Always branch horizontally when connecting the branch piping. To prevent uneven refrigerant flow, always branch downwards when using a header. -
Page 93: Guidelines To Install A Dryer
Piping installation 15.3.7 Guidelines to install a dryer NOTICE Do NOT operate the unit without a dryer installed on the liquid pipe. Possible consequence: Without dryer, operating the unit may cause a choked expansion valve, hydrolysis of the refrigerant oil and copper plating of the compressor. Install a dryer on the liquid piping: Dryer type Drops of R744 water capacity at 60°C: 200... -
Page 94: About Safety Valves
Piping installation 15.3.9 About safety valves When installing a safety valve, always keep the design pressure of the circuit in mind. See "6 Operation" [ 31]. WARNING Serious injury and/or damage can result from the blow-off of the liquid receiver safety valve (see "25.2 Piping diagram: Outdoor unit" [ 151]):... - Page 95 Piping installation Where/how Low pressure side of the refrigeration circuit piping. Use a straight pipe ≤1 m and Ø19.2 mm for the piping connection between the field piping and the safety valve. A (mm ): orifice section Kd: discharge coefficient NOTICE When installing the safety valve provided in the accessory bag, we recommend to apply 20 PTFE tape windings and tighten the safety valve in its correct position with a torque between 35 and 60 N•m.
- Page 96 Piping installation 2 Braze the accessory safety valve pipe for front or bottom connection onto the outdoor unit piping. 3 Braze the field piping onto the accessory pipe. 4 Attach the safety valve piping to a fixed structure, to avoid that vibrations break the pipe when the safety valve opens.
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Page 97: Guidelines To Install Blow-Off Piping
Piping installation ▪ the pipe's diameter ▪ the number of elbows in the piping ▪ the presence of a changeover valve and its kv value. For more information on changeover valves, see "About changeover valves" [ 96]. Changeover Maximum piping length (m) for Ø19.1 mm valve's kV value elbows... -
Page 98: About Checking The Refrigerant Piping
Piping installation ▪ The test has to include the safety valve piping. It is therefore necessary that the pressure passes through the unit. Always keep both liquid and gas stop valves open during leak test and vacuum drying of the field piping. ▪... -
Page 99: Checking Refrigerant Piping: Setup
Piping installation 15.4.3 Checking refrigerant piping: Setup c h i d A Nitrogen (N B R744 refrigerant tank C Weighing scales D Vacuum pump E Outdoor unit a Pressure regulator b Charge hose c Service port SP3 (gas side) d Service port SP7 (liquid side) e Service port SP11 (gas side) f To refrigeration indoor unit g Safety valve... -
Page 100: To Perform A Leak Test
Piping installation 3 Pressurise both liquid side and gas side from service ports SP3, SP7 and SP11. Always test the pressure according to EN378-2 and mind the set pressure of the pressure relief valve (if installed). For the liquid side we recommend a test pressure of 1.1 Ps (99 bar gauge). For the gas side we recommend a test pressure of 1.1 Ps (low pressure side of the refrigeration circuit). -
Page 101: Insulating The Refrigerant Piping
Piping installation 2 Vacuum the unit for at least 2 hours and to –100.7 kPaG (-1.007 bar gauge) or below. 3 Leave the unit for more than 1 hour with a vacuum pressure of –100.7 kPaG (-1.007 bar gauge) or less. On the vacuum gauge, check if the pressure does not increase. -
Page 102: To Insulate The Gas Stop Valve
Piping installation a Sealing material b Front panel 15.5.1 To insulate the gas stop valve The gas pipes and stop valve can reach temperatures as low as –40°C. For safety reasons, it is therefore necessary to insulate these parts as soon as all tests are done. -
Page 103: Electrical Installation
Electrical installation 16 Electrical installation CAUTION This equipment is NOT intended for use in residential locations and will NOT guarantee to provide adequate protection to radio reception in such locations. NOTICE If the equipment is installed closer than 30 m to a residential location, the professional installer MUST evaluate the EMC situation before installation. -
Page 104: Guidelines When Connecting The Electrical Wiring
Electrical installation WARNING ▪ If the power supply has a missing or wrong N-phase, equipment might break down. ▪ Establish proper earthing. Do NOT earth the unit to a utility pipe, surge absorber, or telephone earth. Incomplete earthing may cause electrical shocks. ▪... - Page 105 Electrical installation a Round crimp-style terminal b Cut-out section c Cup washer Use the following methods for installing wires: Wire type Installation method Single-core wire AA´ A´ Stranded conductor wire twisted to "solid-like" connection a Curled wire (single-core or twisted stranded conductor wire) b Screw c Flat washer...
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Page 106: About Electrical Compliance
Electrical installation Tightening torques X1M (A1P) X1M (A1P) a Terminals on outdoor unit b Terminals on capacity up unit Terminal Screw size Tightening torque (N•m) X1M: Power supply 5.5~7.3 PE: Protective earth (screw) X4M: Output signals 1.18~1.44 X5M: Remote switches M3.5 0.79~0.97 X1M (A1P): DIII... - Page 107 Electrical installation Model Minimum S value LRNUN5* – 2294 LREN8~12A + LRNUN5A Installer and user reference guide CO₂ ZEAS outdoor unit and capacity up unit 4P704142-1C – 2024.12...
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Page 108: Field Wiring: Overview
Electrical installation 16.2 Field wiring: Overview X1M (A1P) X1M (A1P) X1M (A1P) X1M (A1P) C C1 W1 R P1 P2 C C1 W1 R P1 P2 L1 L2 L3 N L1 L2 L3 N IN/D UNIT OUT/D UNIT MULTI UNIT IN/D UNIT OUT/D UNIT MULTI UNIT... -
Page 109: Guidelines For Making Knockout Holes
Electrical installation 16.3 Guidelines for making knockout holes ▪ To punch a knockout hole in a front panel, hit on it with a hammer. ▪ To punch a knockout hole in the bottom panel, drill holes where indicated. ▪ After knocking out the holes, we recommend removing any burrs and paint the edges and areas around the holes using repair paint to prevent rusting. -
Page 110: Specifications Of Standard Wiring Components
Electrical installation 16.4 Specifications of standard wiring components Power supply NOTICE When using residual current operated circuit breakers, be sure to use a high-speed type 300 mA rated residual operating current. 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 111: Connections To The Outdoor Unit
Electrical installation Output signals See details in: ▪ "16.5.2 High voltage wiring – Outdoor unit" [ 113] ▪ "16.6.2 High voltage wiring – Capacity up unit" [ 117] 16.5 Connections to the outdoor unit NOTICE ▪ Be sure to keep the power line and transmission line apart from each other (≥50 mm). - Page 112 Electrical installation X1M (A1P) e Wiring intake (knockout hole) for low voltage. See "16.3 Guidelines for making knockout holes" [ 109]. Details – DIII transmission wiring "16.4 Specifications of standard wiring components" [ 110]. Details – Remote operation switch NOTICE Remote operation switch. The unit is factory-equipped with an operation switch with which you can turn unit operation ON/OFF.
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Page 113: High Voltage Wiring - Outdoor Unit
Electrical installation Details – Remote low noise switch NOTICE Low noise switch. If you want to remotely turn ON/OFF low noise operation, you must install a low noise switch. Use a voltage-free contact for microcurrent (≤1 mA, 12 V DC). Low noise switch Mode Normal mode Low noise mode... - Page 114 Electrical installation h Wiring intake (knockout hole) for high voltage. See "16.3 Guidelines for making knockout holes" [ 109]. Details – Output signals NOTICE Output signals. The outdoor unit is provided with a terminal (X4M class II construction) that can output 4 different signals. The signal is 220~240 V AC. The maximum load for all signals is 0.5 ...
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Page 115: Connections To The Capacity Up Unit
Electrical installation Details – Power supply "16.4 Specifications of standard wiring components" [ 110]. 16.6 Connections to the capacity up unit NOTICE ▪ Be sure to keep the power line and transmission line apart from each other (≥50 mm). Transmission wiring and power supply wiring may cross, but may not run parallel. - Page 116 Electrical installation X1M (A1P) d Wiring intake (knockout hole) for low voltage. See "16.3 Guidelines for making knockout holes" [ 109]. Details – DIII transmission wiring "16.4 Specifications of standard wiring components" [ 110]. Details – Remote operation switch NOTICE Remote operation switch. The unit is factory-equipped with an operation switch with which you can turn unit operation ON/OFF.
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Page 117: High Voltage Wiring - Capacity Up Unit
Electrical installation Details – Remote low noise switch: NOTICE Low noise switch. If you want to remotely turn ON/OFF low noise operation, you must install a low noise switch. Use a voltage-free contact for microcurrent (≤1 mA, 12 V DC). Low noise switch Mode Normal mode Low noise mode... - Page 118 Electrical installation g Wiring intake (knockout hole) for high voltage. See "16.3 Guidelines for making knockout holes" [ 109]. Details – Output signals NOTICE Output signals. The outdoor unit is provided with a terminal (X2M class II construction) that can output 3 different signals. The signal is 220~240 V AC. The maximum load for all signals is 0.5 ...
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Page 119: Charging Refrigerant
Charging refrigerant 17 Charging refrigerant In this chapter 17.1 About charging refrigerant..............................119 17.2 Precautions when charging refrigerant ..........................119 17.3 About the refrigerant ................................120 17.4 To determine the refrigerant amount ........................... 121 17.5 To charge refrigerant................................123 17.6 To fix the refrigerant charge label............................ -
Page 120: About The Refrigerant
Charging refrigerant CAUTION Do NOT charge liquid refrigerant directly to a gas line. Liquid compression could cause compressor operation failure. NOTICE If the power of some units is turned off, the charging procedure cannot be finished properly. NOTICE Only when charging the unit for the first time, turn ON the power 6 hours before operation in order to have power running to the crankcase heater and to protect the compressor. -
Page 121: To Determine The Refrigerant Amount
Charging refrigerant WARNING ▪ Do NOT pierce or burn refrigerant cycle parts. ▪ Be aware that the refrigerant inside the system is odourless. WARNING The R744 refrigerant (CO ) inside the unit is odourless, non-flammable and normally does NOT leak. If the unit is installed indoors, ALWAYS install a CO detector according to the specifications of standard EN378. - Page 122 Charging refrigerant 1 Calculate each amount of refrigerant for the liquid piping using the Calculation table in this chapter, based on the piping size and length: (a) (b) (c) and (d). You may round off to the nearest 0.1 kg. 2 Total the amounts of refrigerant for the liquid piping: (a)+(b)+(c)+(d)=[1] 3 Calculate the amount of refrigerant for the indoor units using the Conversion ratio for indoor units: refrigeration table in this chapter, based on the type of indoor units and the cooling capacity:...
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Page 123: To Charge Refrigerant
Charging refrigerant Total amount of refrigerant [4]+[5] (kg) The maximum amount of additional refrigerant that can be charged at the time of the test run is 10% of the amount of refrigerant as calculated from the capacity of connected indoor units. Use [5]≤[2]×0.1 to calculate this maximum amount. Conversion ratio for indoor units: refrigeration Type Conversion ratio (kg/dm... -
Page 124: To Fix The Refrigerant Charge Label
Charging refrigerant INFORMATION After charging, add the total amount of refrigerant to the refrigerant charge label. "17.6 To fix the refrigerant charge label" [ 124]. 17.6 To fix the refrigerant charge label 1 Fill in the label as follows: RXXX GWP: XXX a Total refrigerant charge b GWP value of the refrigerant GWP = Global Warming Potential... -
Page 125: Finishing The Outdoor Unit Installation
Finishing the outdoor unit installation 18 Finishing the outdoor unit installation 18.1 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 126: Configuration
Configuration 19 Configuration DANGER: RISK OF ELECTROCUTION INFORMATION It is important that all information in this chapter is read sequentially by the installer and that the system is configured as applicable. In this chapter 19.1 Making field settings................................126 19.1.1 About making field settings ........................... -
Page 127: Field Setting Components
Configuration c1 Inspection hole c2 Inspection hole cover d Operation switch (S1S) e Field setting components e1 7‑segment displays: ON ( ) OFF ( ) Flashing ( e2 Push buttons: BS1: MODE: For changing the set mode BS2: SET: For field setting BS3: RETURN: For field setting e3 DIP switches 4 After making the field settings, reattach the inspection hole covers and the... - Page 128 Configuration Target evaporating temperature –35°C –40°C Factory setting Use DS2 to define a system layout with or without capacity up unit. NOTICE When installing a capacity up unit it is mandatory to put switch 4 ON. If DS2 is not set correctly, the capacity up unit will NOT operate and no error code is displayed on the PCB of the outdoor unit.
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Page 129: To Access Mode 1 Or 2
Configuration Description Value 4 (in mode 2) 19.1.4 To access mode 1 or 2 After the units are turned ON, the display goes to its default situation. From there, you can access mode 1 and mode 2. Initialisation: default situation NOTICE Turn ON the power 6 hours before operation in order to have power running to the crankcase heater and to protect the compressor. - Page 130 Configuration 1 To select the desired mode, push BS1. See also "19.1.4 To access mode 1 or 2" [ 129]. BS1 BS2 BS3 ▪ For mode 1: push BS1 and release it at once. ▪ For mode 2: push BS1 and keep it depressed for more than 5 seconds. Result: The selected mode appears on the 7-segment display.
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Page 131: Commissioning
Commissioning 20 Commissioning In this chapter 20.1 Overview: Commissioning ..............................131 20.2 Precautions when commissioning............................131 20.3 Checklist before commissioning............................. 132 20.4 About the system test run..............................133 20.5 To perform a test run (7-segment display) ..........................133 20.5.1 Test run checks............................... 134 20.5.2 Correcting after abnormal completion of the test run .................. -
Page 132: Checklist Before Commissioning
Commissioning INFORMATION During the first running period of the unit, the required power may be higher than stated in the technical engineering data of the unit. This phenomenon is caused by the compressor, that needs a continuous run time of 50 hours before reaching smooth operation and stable power consumption. -
Page 133: About The System Test Run
Commissioning Safety valve (accessory) Check that the safety valve (accessory) has been installed correctly according to standards EN378-2 and EN13136. Pipe size and pipe insulation Be sure that correct pipe sizes are installed and that the insulation work is properly executed. -
Page 134: Test Run Checks
Commissioning 2 Check that all electrical components and refrigerant piping is installed correctly, for the indoor units, outdoor unit, and (if applicable) capacity up unit. 3 Turn ON the power supply of all units: the indoor units, outdoor unit and (if applicable) the capacity up unit. - Page 135 Commissioning Parameter Range Root cause when Countermeasure out of range Suction superheat ≥10 K Incorrect selection Set the correct target super (refrigeration) of expansion valve heat (SH) value of at refrigeration showcase or blower coil. side. Suction ≤18°C Lack of amount of Charge additional temperature refrigerant.
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Page 136: Correcting After Abnormal Completion Of The Test Run
Commissioning Action Push button 7-segment display Push BS1 once to return to the initial state. BS1 BS2 BS3 CAUTION ALWAYS turn off the operation switch BEFORE turning off the power supply. 20.5.2 Correcting after abnormal completion of the test run The test operation is only completed if there is no malfunction code displayed on the user interface or outdoor unit 7‑segment display. - Page 137 Commissioning ▪ Name, address and day and night telephone numbers for obtaining service Location of the logbook The logbook shall either be kept in the machinery room, or the data shall be stored digitally by the operator with a printout in the machinery room, in which case the information shall be accessible to the competent person when servicing or testing.
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Page 138: Hand-Over To The User
Hand-over to the user 21 Hand-over to the user Once the test run is finished and the unit operates properly, make sure the following is clear for the user: ▪ Make sure that the user has the printed documentation and ask him/her to keep it for future reference. -
Page 139: Maintenance And Service
Maintenance and service 22 Maintenance and service In this chapter 22.1 Precautions for maintenance and service..........................139 22.2 To prevent electrical hazards ..............................139 22.3 To release refrigerant ................................140 22.3.1 To release refrigerant using the service ports....................... 140 22.1 Precautions for maintenance and service DANGER: RISK OF ELECTROCUTION DANGER: RISK OF BURNING/SCALDING NOTICE... -
Page 140: To Release Refrigerant
Maintenance and service 3 To prevent damaging the PCB, touch a non-coated metal part to eliminate static electricity before pulling out or plugging in connectors. 4 Pull out junction connectors for the fan motors in the outdoor unit before starting service operation on the inverter equipment. Be careful NOT to touch the live parts. - Page 141 Maintenance and service 4 Make sure the service ports are closed. Install a pressure hose to service ports SP3, SP7 and SP11. Check that the hoses are properly fixed and that they lead outside. 5 Fully open SP7 to release the liquid refrigerant. See "15.2.5 ...
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Page 142: Troubleshooting
Troubleshooting 23 Troubleshooting In this chapter 23.1 Overview: Troubleshooting ..............................142 23.2 Precautions when troubleshooting............................142 23.3 Solving problems based on error codes..........................142 23.3.1 Error codes: Overview............................143 23.1 Overview: Troubleshooting Before troubleshooting Carry out a thorough visual inspection of the unit and look for obvious defects such as loose connections or defective wiring. -
Page 143: Error Codes: Overview
Troubleshooting INFORMATION See the service manual for: ▪ The complete list of error codes ▪ A more detailed troubleshooting guideline for each error 23.3.1 Error codes: Overview In case other error codes appear, contact your dealer. Main code LREN* LRNUN5* Cause Solution Electrical leakage... - Page 144 Troubleshooting Main code LREN* LRNUN5* Cause Solution Malfunction of discharge/ Check connection on PCB or compressor body temperature actuator. sensor For LREN*: ▪ (R31T) - A1P (X19A) ▪ (R32T) - A1P (X33A) ▪ (R33T) - A2P (X19A) ▪ (R91T) - A1P (X19A) ▪...
- Page 145 Troubleshooting Main code LREN* LRNUN5* Cause Solution Malfunction of high pressure sensor Check connection on PCB or actuator. For LREN*: ▪ (S1NPH) – A2P (X31A) For LRNUN5*: ▪ (S1NPH) – A1P (X31A) Malfunction of low pressure sensor Check connection on PCB or actuator.
- Page 146 Troubleshooting NOTICE After turning ON the operation switch, wait at least 1 minute before turning OFF the power supply. Electrical leakage detection is performed shortly after the compressor starts. Turning off the power supply during this check will result in an incorrect detection.
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Page 147: Disposal
Disposal 24 Disposal Before disposal, remove all refrigerant. For more information, see "22.3.1 To release refrigerant using the service ports" [ 140]. 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 148: 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 the latest technical data is available on the Daikin Business Portal (authentication required). In this chapter 25.1... - Page 149 Technical data (mm) 1500 ≥300 ≥500 ≥500 ≥500 ≥300 ≥500 ≥500 ≥500 ≥500 ≥500 ≥300 ≥500 ≥500 ≥500 ≥300 ≥500 ≥500 ≥500 ≥500 ≥500 ≥500 Item Description Maintenance space Possible patterns with installation spaces in case (a)(b)(c)(d)(e)(f) of a single outdoor unit Possible patterns with installation spaces in case of an outdoor unit connected to a capacity up (a)(b)(c)(d)(e)(f)
- Page 150 Technical data Item Description H2 (actual height)–500 mm Front side = 500 mm+≥h1/2 Y (for patterns B) Air inlet side = 300 mm+≥h2/2 Y (for patterns C) Air inlet side = 100 mm+≥h2/2 Wall height front side: ≤1500 mm. Wall height air inlet side: ≤500 mm. Wall height other sides: no limit.
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Page 151: Piping Diagram: Outdoor Unit
Technical data 25.2 Piping diagram: Outdoor unit CsV5 S1NPH S3PH HEX1 R33T CV10 INV3 R93T R23T S2NPM HEX2 S2PH S1PH R32T R31T CV11 PHEX2 INV1 INV2 CsV7 SP10 R92T FT10 R91T Y21S S1NPL Ø22.2 C1120T-H R21T CsV3 Y15E PHEX1 S1NPM Ø15.9 C1120T-H CsV4 3D138054... -
Page 152: Piping Diagram: Capacity Up Unit
Technical data 25.3 Piping diagram: Capacity up unit 15.9 C1220T-H 15.9 C1220T-H 3D128362B Pressure sensor Compressor with accumulator Pressure switch Plate heat exchanger Check valve Heat exchanger Service port Oil separator Electronic expansion valve Liquid receiver Filter Refrigerant pipe Propeller fan Oil and injection pipe LREN8~12A + LRNUN5A Installer and user reference guide... -
Page 153: Wiring Diagram: Outdoor Unit
Technical data 25.4 Wiring diagram: Outdoor unit The wiring diagram is delivered with the unit: ▪ For the outdoor unit: At the inside of the left switch box cover. ▪ For the capacity up unit: At the inside of the switch box cover. Outdoor unit Notes: This wiring diagram applies only to the outdoor unit. - Page 154 Technical data Printed circuit board (M1F) A10P Printed circuit board (M2F) A11P Printed circuit board (M3F) A13P Printed circuit board (ABC I/P 1) A14P Printed circuit board (earth leakage detector) E1HC Crankcase heater (M1C) E2HC Crankcase heater (M2C) E3HC Crankcase heater (M3C) F1U, F2U Fuse (T, 6, 3 A, 250 V) (A1P, A2P) F3U, F4U...
- Page 155 Technical data S1NPL Low pressure sensor (refrigeration) S1NPM Medium pressure sensor (liquid) S2NPM Medium pressure sensor (M3C suction) S1PH Pressure switch (high pressure protection) (M1C) S2PH Pressure switch (high pressure protection) (M2C) S3PH Pressure switch (high pressure protection) (M3C) Operation switch (REMOTE/OFF/ON) Current sensor (A14P) Current sensor (A1P) Current sensor (A2P)
- Page 156 Technical data Colours: Black Blue White Green Yellow Legend: Printed circuit board (main) Printed circuit board (M1C) Printed circuit board (noise filter) (M1C) Printed circuit board (M1F) Printed circuit board (ABC I/P 1) Printed circuit board (sub) BS1~BS3 Push buttons (mode, set, return) C503, C506 Capacitor (A2P) C507...
- Page 157 Technical data Thermistor (M1C discharge) Thermistor (de-icer) Thermistor (liquid separator outlet) Thermistor (plate heat exchanger outlet) Thermistor (liquid pipe) Thermistor (M1C body) S1NPH High pressure sensor S1NPM Medium pressure sensor S1PH Pressure switch (high pressure protection) (M1C) Operation switch (REMOTE/OFF/ON) Current sensor (A1P) Power module (A2P, A4P) Diode (A2P)
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Page 158: 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 160 4P704142-1C 2024.12...
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