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VRV W T-Series water-cooled system air conditioner
RWEQ72TBTJ▼
RWEQ96TBTJ▼
RWEQ120TBTJ▼
RWEQ144TBTJ▼
RWEQ168TBTJ▼
RWEQ192TBTJ▼
RWEQ216TBTJ▼
RWEQ240TBTJ▼
RWEQ264TBTJ▼
RWEQ288TBTJ▼
RWEQ312TBTJ▼
RWEQ336TBTJ▼
RWEQ360TBTJ▼
RWEQ384TBTJ▼
RWEQ408TBTJ▼
RWEQ432TBTJ▼
Read these instructions carefully before installation.
Keep this manual in a handy place for future reference.
This manual should be left with the equipment owner.
Please visit http://www.daikinac.com/content/resources/manuals for the most current version of installation instructions and service
manual. In the event of conflicting information, the online instructions are to be used.
Installation manual
RWEQ72TBYD▼
RWEQ96TBYD▼
RWEQ120TBYD▼
RWEQ144TBYD▼
RWEQ168TBYD▼
RWEQ192TBYD▼
RWEQ216TBYD▼
RWEQ240TBYD▼
RWEQ264TBYD▼
RWEQ288TBYD▼
RWEQ312TBYD▼
RWEQ336TBYD▼
RWEQ360TBYD▼
RWEQ384TBYD▼
RWEQ408TBYD▼
RWEQ432TBYD▼
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Table of Contents
Related Manuals for Daikin VRV RWEQ72TBTJ Series
Summary of Contents for Daikin VRV RWEQ72TBTJ Series
- Page 1 Installation manual VRV W T-Series water-cooled system air conditioner RWEQ72TBTJ▼ RWEQ72TBYD▼ RWEQ96TBTJ▼ RWEQ96TBYD▼ RWEQ120TBTJ▼ RWEQ120TBYD▼ RWEQ144TBTJ▼ RWEQ144TBYD▼ RWEQ168TBTJ▼ RWEQ168TBYD▼ RWEQ192TBTJ▼ RWEQ192TBYD▼ RWEQ216TBTJ▼ RWEQ216TBYD▼ RWEQ240TBTJ▼ RWEQ240TBYD▼ RWEQ264TBTJ▼ RWEQ264TBYD▼ RWEQ288TBTJ▼ RWEQ288TBYD▼ RWEQ312TBTJ▼ RWEQ312TBYD▼ RWEQ336TBTJ▼ RWEQ336TBYD▼ RWEQ360TBTJ▼ RWEQ360TBYD▼ RWEQ384TBTJ▼ RWEQ384TBYD▼ RWEQ408TBTJ▼ RWEQ408TBYD▼ RWEQ432TBTJ▼ RWEQ432TBYD▼...
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Page 2: Table Of Contents
Table of contents Table of contents Charging refrigerant ..............25 5.6.1 Precautions when charging refrigerant ......25 1 Safety considerations 5.6.2 Charging refrigerant ............25 2 Inspection, handling and unpacking the unit 5.6.3 To determine the additional refrigerant amount .....26 5.6.4 To charge refrigerant .............28 Inspection, handling and unpacking the unit ........3 5.6.5 Final charge adjustment ..........29... -
Page 3: Safety Considerations
▪ After completing the installation work, check that the than those specified by Daikin are used, fire or refrigerant gas does not leak throughout the system. explosion could result. -
Page 4: Inspection, Handling And Unpacking The Unit
72 hours of operation. for the tightness of the refrigerant piping installation. Make sure to use a DAIKIN specified checker while measuring sub Read the chapter Refrigerant Piping and follow the cooling. Do not use the check valve or the other port to measure it. -
Page 5: Opening The Unit
2 Inspection, handling and unpacking the unit ▪ Lift the unit preferably with a crane and 2 belts of at least 16.41 ft 2 .3 Accessories (5 m) long as shown in the figure below. Always use protectors to prevent belt damage and pay attention to the position of the unit's center of gravity. Packaging material Belt sling Opening... -
Page 6: Method For Removing Shipping Plate
3 Identification and system layout Unit: inch (mm) Identification and system Accessory pipes Øa Øb layout High pressure/Low 5/8 (15.9) pressure gas pipe (25.4) ▪ Top connection 3 .1 Standard operation limit (19.1) Øa Øb 7/8 (22.2) The figures below assume following operating conditions for indoor and outside units: Equivalent pipe length ......... -
Page 7: Identification Label: Outside Unit
3 Identification and system layout 3 .2 Identification label: Outside unit 3 .4 System layout INFORMATION Location Not all combinations of indoor units are allowed. Heat recovery system Model identification Example: RW E Q 96 T B YD ∗ Code Explanation Water-cooled Heat pump system... -
Page 8: Combining Units And Options
3 Identification and system layout Water system 3 .5 .3 Possible combinations of outside units Possible single module units RWEQ72 RWEQ96 RWEQ120 RWEQ144 Possible standard combinations of units RWEQ168~432 consists of 2 or 3 RWEQ72~144 units. Unit Connection to refrigerant system RWEQ168 = RWEQ72 + 96 Water piping RWEQ192 = RWEQ96 + 96... -
Page 9: Preparation
4 Preparation Preparation 3 .5 .5 Possible options for the outside unit INFORMATION 4 .1 Overview: Preparation Refer to the technical engineering data for the latest option names. This chapter describes what you have to do and know before going Refrigerant branching kit on-site. -
Page 10: Securing Safety Against Refrigerant Leaks
4 Preparation About the maximum concentration level NOTE The equipment described in this manual may cause The maximum charge of refrigerant and the calculation of the electronic noise generated from radio-frequency energy. maximum concentration of refrigerant is directly related to the The equipment complies to specifications that are humanly occupied space in to which it could leak. -
Page 11: Refrigerant Pipe Size And Allowable Length
4 Preparation 4 .3 Refrigerant pipe size and allowable 4 .3 .2 To select the piping size length INFORMATION Please select the proper pipe sizes depending on the NOTE mode of your system. There are 2 possible modes: The refrigerant R410A requires strict cautions for keeping ▪ heat pump, the system clean, dry and tight. - Page 12 4 Preparation In case of heat recovery mode A, B, C: Piping between outside unit and (first) Unit: inch (mm) refrigerant branch kit Indoor unit capacity Piping outer diameter size index Choose from the following table in accordance with the outside unit Suction gas High Liquid pipe...
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Page 13: To Select Refrigerant Branch Kits
4 Preparation 4 .3 .3 To select refrigerant branch kits INFORMATION The piping branch by REFNET joints is possible in the Refrigerant refnets downstream of REFNET headers. Indoor unit total capacity For piping example, refer to "4.3.2 To select the piping size" on at REFNET joints according to the REFNET header are as page 10. -
Page 14: Single Module And Standard Multi-Outside-Unit Combinations
4 Preparation Outside unit Accessory Equivalent length VRV indoor unit Multi BS4-6Q54T∗ 19 ft (6 m) Pipe Maximum length (actual/equivalent) Multi BS8-12Q54T∗ 33 ft (10 m) Longest pipe from the 540 ft (165 m)/623 ft (190 m) For the equivalent length of BSF-Q54T∗, refer to the table below based outside unit to the last indoor on the total capacity of the indoor units to be connected downstream. -
Page 15: Multiple Module: Possible Layouts
4 Preparation Pipe Maximum length (actual/equivalent) Then In case of a multi-outside 33 ft (10 m)/43 ft (13 m) ≤6.5 ft (2 m) 6.5 ft (2 m) setup: longest pipe from the or less outside unit to the last multi- outside piping branch (4) Total pipe length (1+2+3+5) 980 ft (300 m)/—... -
Page 16: Preparing Water Piping
4 Preparation Example: If the actual pipe length difference after the first branch is more than 130 ft (40 m), please size up the piping until the last branch. (Liquid b is neither 48 types nor 54 types nor 72 types nor 96 type pipe and gas pipe at Heat pump mode) (7, 8, 9). -
Page 17: Water Circuit Requirements
4 Preparation Example: NOTE ▪ The supply water MUST be clean tap water, industrial water or clean underground water. Do NOT use purified or softened water. ▪ Do NOT use once-through water. It may cause corrosion. 4 .4 .2 Water circuit requirements INFORMATION Air purge (field supply) Water outlet... -
Page 18: Before Starting A Test Run
4 Preparation NOTE Before starting a test run Make sure that all field supplied equipment for variable 1 Before starting a test run, please make sure that the piping flow rate can be switched off together with the outside unit. work has been carried out in a proper manner. -
Page 19: Field Wiring
4 Preparation Design criteria 4 .5 Field wiring Minimum flow rate C: Model 4 .5 .1 Safety device requirements RWEQ72~144 13.2 gpm (50 l/min) 21.2 gpm (80 l/min) The power supply must be protected with the required safety For antifreeze use devices, i.e. -
Page 20: Installation
5 Installation Installation NOTE When the installation height of the unit needs to be increased, do not use stands to only support the corners. 5 .1 Unpacking and placing the unit ▪ The preferred installation is on a solid longitudinal foundation (steel beam frame or concrete). -
Page 21: Connecting The Refrigerant Piping
5 Installation 5 .3 .2 Connecting the refrigerant piping 5 .3 .4 To connect the refrigerant piping to the outside unit Before connecting the refrigerant piping, make sure the outside and indoor units are mounted. Heat recovery system Heat pump system Connecting the refrigerant piping involves: Do not cut the stop valve pipe... -
Page 22: Multi Connection Piping Kit Connection
5 Installation 5 .3 .5 Multi connection piping kit connection 5 .3 .7 Protection against contamination Protect the piping as described in the following table to prevent dirt, NOTE liquid or dust from entering the piping. Improper installation may lead to malfunction of the outside unit. -
Page 23: Using The Stop Valve And Service Port
5 Installation Closing direction: 5 .3 .9 Using the stop valve and service port To handle the stop valve ▪ Make sure to keep all stop valves open during operation. ▪ The figure below shows the name of each part required in handling the stop valve. To handle the stop valve cover ▪ The stop valve is factory closed. -
Page 24: Checking The Refrigerant Piping
5 Installation Use the following procedure to remove the pinched piping: WARNING 1 Remove the valve cover and make sure that the stop valves are fully closed. Never remove the pinched piping by brazing. Any gas or oil remaining inside the stop valve may blow off the pinched piping. -
Page 25: Checking Refrigerant Piping: General Guidelines
5 Installation Leak test and vacuum drying Valve State of valve Checking the refrigerant piping involves: Valve A Open ▪ Checking for any leakages in the refrigerant piping. Valve B Open Valve C Open ▪ Performing vacuum drying to remove all moisture, air or nitrogen in the refrigerant piping. Valve D Open If there is a possibility of moisture being present in the refrigerant Liquid line stop valve Close piping (for example, water may have entered the piping), first carry... -
Page 26: To Insulate The Refrigerant Piping
5 Installation <Vacuum drying> 5 .6 Charging refrigerant Evacuate the system from the suction gas pipe, high/low pressure gas pipe and liquid pipe stop valve service ports by using a vacuum 5 .6 .1 Precautions when charging refrigerant pump for more than 2 hours and bring the system to 500 microns or less. -
Page 27: To Determine The Additional Refrigerant Amount
5 Installation Parameter B . If the total indoor unit capacity connection ratio>85%, 5 .6 .3 To determine the additional refrigerant charge an additional refrigerant. amount Parameter [B] NOTE Total Refrigerant amount Field indoor unit The refrigerant charge of the system must be less than piping Total outside unit capacity type capacity... - Page 28 5 Installation Example of refrigerant piping (8 indoor units are connected) : Branch Selector unit (multi) : Indoor units (cooling/heating Outside unit selectable) : Branch Selector unit (single) First outside unit Outside unit : Indoor unit (cooling only) multi connection (*3) piping kit REFNET joint (A-E)
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Page 29: To Charge Refrigerant
5 Installation 5 .6 .4 To charge refrigerant INFORMATION If the total additional refrigerant amount was reached in Follow the steps as described below. step 4 (by pre-charging only), record the amount of refrigerant that was added on the additional refrigerant Pre-charging refrigerant charge label provided with the unit and attach it on the 1 Calculate the additional amount of refrigerant to be added using... -
Page 30: Final Charge Adjustment
Subcooling = Condensing_temp.(TC) – (Heat exchanger liquid pipe) ▪ General safety precautions Check subcooling for each outside unit by DAIKIN specified checker ▪ Preparation and calculate the average subcooling of the outside unit using weighted average method. -
Page 31: To Insulate The Water Piping
5 Installation 5 .7 .5 To insulate the water piping NOTE This machine includes an inverter device. Connect ground The outside water piping MUST be insulated to prevent and leave charge to eliminate the impact on other devices condensation during cooling operation and reduction of the heating by reducing noise generated from the inverter device and and cooling capacity. -
Page 32: About The Electrical Wiring
5 Installation In case of heat pump mode In case of heat recovery mode Field power supply Main switch Fuse or circuit breaker Remote controller Outside unit Indoor unit Cool/heat selector Power supply wiring Transmission wiring Outside unit These images are intended as examples only. Please follow local Indoor unit + Branch selector units and national electrical code. -
Page 33: To Route And Fix The Transmission Wiring
5 Installation In case of heat pump mode 5 .8 .4 To route and fix the transmission wiring Transmission wiring can be routed through the front side only. Fix it to the upper mounting hole. F1 F2 F1 F2 Q1 Q2 Q1 Q2 Q1 Q2 F2 Q1 Q2... -
Page 34: To Connect The Power Supply
5 Installation The power supply wiring can be routed from the front side. Exit the wiring via the upper mounting hole. Power supply (208/230 V - 3 phase 60 Hz OR 460 V - 3 phase 60 Hz) Fuse or circuit breaker Ground wire Power supply terminal block Connect each power wire: RED to L1, WHT to L2 and BLK... -
Page 35: Checking Of Device And Installation Conditions
6 Checking of device and installation conditions Example: Connect the power source to X2M terminals 1 and 3 (respect the polarity). 1 2 3 4 5 6 7 8 9 10 INTER LOCK 2~9 V DC – + – 12 V DC Valve/pump Power supply NOTE... -
Page 36: Configuration
7 Configuration 3 Has the insulation of the main power circuit deteriorated? To access you can remove the front inspection cover of the front Measure the insulation and check the insulation is above plate (see figure). Now you can open the inspection cover of the regular value in accordance with relevant local and national electrical component box front plate (see figure). -
Page 37: To Use Mode 1
7 Configuration Access What BS1 is used to change the mode you want to access. Changing and accessing Once mode 2 is selected (push BS1 for the setting in mode 2 more than 5 seconds), you can select Access Action the desired setting. -
Page 38: Mode 2: Field Settings
7 Configuration The main unit should be used to input field settings in mode 2 . [2-0] Cool/Heat selection setting [1-0] Description 0 (default) Each individual outside unit can select Cool/ Heat operation (by Cool/Heat selector if No indication Undefined situation. installed). - Page 39 7 Configuration In order to add the additional refrigerant charge amount in a manual [2-25] Flow % of max flow rate DC output (V) way, following setting should be applied. Further instructions regarding the different ways to charge additional refrigerant into your system can be found in chapter "5.6.2 Charging refrigerant"...
- Page 40 7 Configuration [2-32] [2-50] Forced, all time, power consumption limitation operation (no external Antifreeze type setting. control adaptor is required to perform power consumption limitation). By changing this setting, you can extend the operation range at the If the system always needs to be running under power consumption antifreeze side of the unit.
- Page 41 7 Configuration [2-95] [2-74] Heat rejection cancellation setting temperature. Optional setting to prioritize VRT control. If the unit internal temperature is higher than the zero energy [2-95] Level dissipation setting temperature, the zero energy dissipation control 0 (Default) Prioritize largest demand will start and cool down the unit.
- Page 42 7 Configuration Heat pump lockout [2-16] Heat pump lockout 1. Heat pump is always locked out when this setting is ON. If the indoor fan control needs to be changed or the auto-backup function is required, refer to the setting [2-37]. [2-16] Heat pump lockout 1 0 (default)
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Page 43: To Connect The Pc Configurator To The Outside Unit
8 Commissioning Automatic lockout 7 .2 .9 To connect the PC configurator to the When this setting is made, the auto-backup function will outside unit automatically be activated. This will allow the auxiliary or secondary heat source to be automatically activated in the event of a system failure related to outside units. -
Page 44: Checklist Before Commissioning
8 Commissioning NOTE Refrigerant leak Be sure to turn on the power 6 hours before operation in Check the inside of the unit on refrigerant leakage. If there order to have power running to the crankcase heater and is a refrigerant leak, try to repair the leak. If the repair is to protect the compressor. -
Page 45: To Perform A Test Run
9 Maintenance and service 8 .6 Correcting after abnormal INFORMATION completion of the test run ▪ It may take 10 minutes to achieve a uniform refrigerant state before the compressor starts. The test operation is only completed if there is no malfunction code ▪ During the test operation, the refrigerant running sound displayed on the user interface or outside unit 7-segment display. In or the magnetic sound of a solenoid valve may become case of a displayed malfunction code, perform correcting actions as loud and the display indication may change. -
Page 46: Maintenance Of The Plate Heat Exchanger
9 Maintenance and service 9 .3 .1 Daily service and maintenance 208/230 V 1 Management of water quality The plate-type heat exchanger has a structure that does not permit dismantling and cleaning, or replacing any parts. Please pay attention carefully to the quality of water to be used for the plate-type heat exchanger in order to prevent corrosion and sticking of scale. -
Page 47: About Service Mode Operation
10 Troubleshooting 3) Connect the piping for circulation of cleaning chemicals to Troubleshooting the inlet and outlet piping of plate-type heat exchanger. Fill the cleaning solution of 122-144°F (50-62°C) for a while in the plate-type heat exchanger. Then, circulate the cleaning 10 .1 Overview: Troubleshooting solution by a pump for 2-5 hours. -
Page 48: Error Codes: Overview
10 Troubleshooting 10 .3 Error codes: Overview Malfunction code Contents Solution Main Sub code code Master/sub 1/sub 2 01/03/05 ▪ High pressure switch is activated. ▪ Check stop valves situation or abnormalities in (S1PH)-A1P (X3A) (field) piping or waterflow. ▪ High pressure switch connectors are detached. ▪ Securely connect each connector. Refer to the wiring -A1P (X3A) diagram attached to the back of the control box cover. - Page 49 10 Troubleshooting Malfunction code Contents Solution Main Sub code code Master/sub 1/sub 2 System test run not yet executed (system operation Execute system test run. not possible). Test run aborted. Re-execute the test run. Test run aborted due to communication issues. Check the communication wires and re-execute the test run.
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Page 50: Technical Data
11 Technical data Technical data 11 .1 Overview: Technical data This chapter contains information about: ▪ Service space ▪ Piping diagram ▪ Wiring diagram 11 .2 Service space: Outside unit Make sure the space around the unit is adequate for servicing and the minimum space for ventilation is available (refer to the figure below). (*1) d (*2) ≥19-11/16 inch (500 mm) -
Page 51: Piping Diagram: Outside Unit
11 Technical data 11 .3 Piping diagram: Outside unit SENPH SENPL B B B A 3D130237 Accumulator Charge port Stop valve Cooling water inlet Compressor Cooling water outlet Subcool heat exchanger Heat exchanger pipe Double tube heat exchanger / Plate heat exchanger Receiver Charge port / Service port Liquid receiver... -
Page 52: Wiring Diagram: Outside Unit
11 Technical data 11 .4 Wiring diagram: Outside unit The wiring diagram is delivered with the unit, located at the inside of the service cover. RWEQ72~432TBTJ∗ (208/230 V) Power Power supply supply water control 12 V DC output 3~ 60 Hz 208/230 V Cool/heat selector R10T... - Page 53 11 Technical data RWEQ72~432TBYD∗ (460 V) Power Power supply supply water control 12 V DC output 3~ 60 Hz 460 V R10T Cool/heat selector X1M (Note 2) L1 L2 L3 -t° -t° -t° -t° -t° -t° -t° -t° R11T -t° Heat 1 2 3 Q1DI...
- Page 56 Daikin Texas Technology Park, 19001 Kermier Road, Waller, TX, 77484, U.S.A. 4P739861-1 2023.10 *4P739861-1 0000000W*...
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