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VRV W T-Series water-cooled system air conditioner
RWEQ96TAYD∗
RWEQ120TAYD∗
RWEQ144TAYD∗
RWEQ192TAYD∗
RWEQ216TAYD∗
RWEQ240TAYD∗
RWEQ264TAYD∗
RWEQ288TAYD∗
RWEQ312TAYD∗
RWEQ336TAYD∗
RWEQ360TAYD∗
RWEQ384TAYD∗
RWEQ408TAYD∗
RWEQ432TAYD∗
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/com/resources/manuals for the most current version of installation instructions. In the event of
conflicting information, the online installation instruction is to be used.
Veuillez visiter http://www.daikinac.com/content/resources/manuals pour obtenir la version la plus récente des instructions
d'installation. En cas de conflit d'informations, les instructions d'installation en ligne doivent être utilisées.
Visite http://www.daikinac.com/content/resources/manuals para obtener la versión más actualizada de las instrucciones de
instalación. En caso de información conflictiva, se debe utilizar la instrucción de instalación en línea.
Installation manual
RWEQ96TATJ∗
RWEQ120TATJ∗
RWEQ144TATJ∗
RWEQ192TATJ∗
RWEQ216TATJ∗
RWEQ240TATJ∗
RWEQ264TATJ∗
RWEQ288TATJ∗
RWEQ312TATJ∗
RWEQ336TATJ∗
RWEQ360TATJ∗
RWEQ384TATJ∗
RWEQ408TATJ∗
RWEQ432TATJ∗
VRV W T-Series water-cooled system air conditioner
Climatiseur système refroidi par eau VRV W série T
Sistema de climatización condensado por agua VRV W serie T
Installation manual
Manuel d'installation
Manual de instalación
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Table of Contents
Related Manuals for Daikin RWEQ96TAYD Series
Summary of Contents for Daikin RWEQ96TAYD Series
- Page 1 Installation manual VRV W T-Series water-cooled system air conditioner RWEQ96TAYD∗ RWEQ96TATJ∗ RWEQ120TAYD∗ RWEQ120TATJ∗ RWEQ144TAYD∗ RWEQ144TATJ∗ RWEQ192TAYD∗ RWEQ192TATJ∗ RWEQ216TAYD∗ RWEQ216TATJ∗ RWEQ240TAYD∗ RWEQ240TATJ∗ RWEQ264TAYD∗ RWEQ264TATJ∗ RWEQ288TAYD∗ RWEQ288TATJ∗ RWEQ312TAYD∗ RWEQ312TATJ∗ RWEQ336TAYD∗ RWEQ336TATJ∗ RWEQ360TAYD∗ RWEQ360TATJ∗ RWEQ384TAYD∗ RWEQ384TATJ∗ RWEQ408TAYD∗ RWEQ408TATJ∗ RWEQ432TAYD∗ RWEQ432TATJ∗ Read these instructions carefully before installation. Keep this manual in a handy place for future reference.
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Page 2: Table Of Contents
Table of contents Table of contents 5.6.2 Charging refrigerant ............26 5.6.3 To determine the additional refrigerant amount .....26 1 Safety considerations 5.6.4 To charge refrigerant .............29 2 Inspection, handling and unpacking the unit 5.6.5 Final charge adjustment ..........30 5.6.6 Checks after charging refrigerant ........30 Inspection, handling and unpacking the unit ........4 Connecting the water piping ............30 Opening the unit ................5... -
Page 3: Safety Considerations
▪ After completing the installation work, check that the device is shorted and operated forcibly, or parts other refrigerant gas does not leak throughout the system. than those specified by Daikin are used, fire or explosion could result. ▪ Do not install unit in an area where flammable materials are present due to risk of explosions that will result in serious injury or death. -
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 pressure gas pipe (25.4) (19.1) ▪ Top connection 3 .1 Standard operation limit Øa Øb (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 A 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 RWEQ96 RWEQ120 RWEQ144 Possible standard combinations of units RWEQ192~432 consists of 2 or 3 RWEQ96~144 units. RWEQ192 = RWEQ96 + 96 Unit Connection to refrigerant system RWEQ216 = RWEQ120 + 96... -
Page 9: Possible Options For The Outside Unit
4 Preparation PC configurator cable (999482P3) 3 .5 .5 Possible options for the outside unit You can make several commissioning field settings through a INFORMATION personal computer interface. For this option 999482P3 is required which is a dedicated cable to communicate with the outside unit. Refer to the technical engineering data for the latest option names. -
Page 10: Securing Safety Against Refrigerant Leaks
4 Preparation NOTE About the maximum concentration level 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: To Select Refrigerant Branch Kits
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... -
Page 13: System Piping (Length) Limitation
4 Preparation 4 .3 .4 System piping (length) limitation Outside unit 2 pipes 3 pipes capacity type (MBH) Make sure the piping installation does not exceed the maximum KHRP26A33T9 KHRP25A33T9 allowable pipe length, the allowable level difference, and the KHRP26A33TA KHRP25A33TA allowable length after branching. -
Page 14: Single Module And Standard Multi-Outside-Unit Combinations
4 Preparation 4 .3 .5 Single module and standard multi- In case of heat recovery mode outside-unit combinations Connection with only indoor units In case of heat pump mode Connection with indoor units and air handling units Outside unit Outside unit VRV indoor unit VRV indoor unit Multi branch selector unit... -
Page 15: Multiple Module: Possible Layouts
4 Preparation If the equivalent piping length is more than 295 ft (90 m), Then size up the main liquid pipings according to "4.3.2 To select >6.5 ft (2 m) the piping size" on page 11. Rising height: 6.5 ft (2 m) 8 inch (200 mm) If actual piping length of indoor units where difference from or less... -
Page 16: Preparing Water Piping
4 Preparation If the actual pipe length difference after the first branch is more than Example: 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 Air purge (field supply) INFORMATION Water outlet... -
Page 18: Variable Water Flow Rate
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
5 Installation Maximum flow rate D: ▪ Phase and frequency: 3 ~ 60 Hz ▪ Voltage: 208/230 V (RWEQ96~432TATJ∗), Model 460 V (RWEQ96~432TAYD∗), RWEQ96~144 39.6 gpm (150 l/min) ▪ Transmission line section insulated: AWG 18~16, maximum Hydronic flow rate E: length is 3280 ft (1000 m). If the total transmission wiring exceeds these limits, it may result in communication error. -
Page 20: Mounting The Outside Unit
5 Installation WARNING During tests, NEVER pressurize the product with a pressure higher than the maximum allowable pressure (as indicated on the nameplate of the unit). 4× WARNING Take sufficient precautions in case of refrigerant leakage. If refrigerant gas leaks, ventilate the area immediately. Possible risks: ▪ Excessive refrigerant concentrations in a closed room can lead to oxygen deficiency. -
Page 21: To Connect The Refrigerant Piping To The Outside Unit
5 Installation 5 .3 .5 Multi connection piping kit connection NOTE Improper installation may lead to malfunction of the outside unit. ▪ Install the joints horizontally, so that the caution label (a) attached to the joint comes to the top. ▪ Do not tilt the joint more than 15° (see view A). ▪ Do not install the joint vertically (see view B). 5 .3 .4 To connect the refrigerant piping to the outside unit 15°... -
Page 22: Protection Against Contamination
5 Installation 5 .3 .7 Protection against contamination 5 .3 .9 Using the stop valve and service port Protect the piping as described in the following table to prevent dirt, To handle the stop valve liquid or dust from entering the piping. ▪ Make sure to keep all stop valves open during operation. -
Page 23: To Remove The Pinched Pipes
5 Installation Closing direction: Use the following procedure to remove the pinched piping: 1 Remove the valve cover and make sure that the stop valves are fully closed. To handle the stop valve cover ▪ The stop valve cover is sealed where indicated by the arrow. Do NOT damage it. Service port and service port cover ▪ After handling the stop valve, tighten the stop valve cover Stop valve securely, and check for refrigerant leaks. -
Page 24: Checking The Refrigerant Piping
5 Installation Leak test and vacuum drying WARNING Checking the refrigerant piping involves: ▪ Checking for any leakages in the refrigerant piping. ▪ Performing vacuum drying to remove all moisture, air or nitrogen in the refrigerant piping. If there is a possibility of moisture being present in the refrigerant Never remove the pinched piping by brazing. -
Page 25: Air Tight Test And Vacuum Drying
5 Installation <Vacuum drying> Valve State of valve Evacuate the system from the suction gas pipe, high/low pressure Valve A Open gas pipe and liquid pipe stop valve service ports by using a vacuum Valve B Open pump for more than 2 hours and bring the system to 500 microns or less. -
Page 26: Charging Refrigerant
5 Installation 5 .6 Charging refrigerant 5 .6 .3 To determine the additional refrigerant amount 5 .6 .1 Precautions when charging refrigerant NOTE The refrigerant charge of the system must be less than WARNING 210 lbs (100 kg). This means that in case the calculated ▪ Only use R410A as refrigerant. Other substances may total refrigerant charge is equal to or more than 209 lbs cause explosions and accidents. - Page 27 5 Installation Parameter B . If the total indoor unit capacity connection ratio>85%, charge an additional refrigerant. Parameter [B] Total Refrigerant amount Field indoor unit piping Total outside unit capacity type capacity length RWEQ72- RWEQ168- RWEQ312- connection 144T type 288T type 432T type ratio ≤85%...
- 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. (shown below) 5 .7 .3... -
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 Main line 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 Connect the power source to X2M terminals 1 and 3 (respect the polarity). Example: 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 For those doing pipe work 1 Make sure piping size is correct. See "4.3 Refrigerant pipe size and allowable length" on page 11 and "4.3.3 To select refrigerant branch kits" on page 12. 2 Make sure insulation work is done. See "5.5 To insulate the refrigerant piping"... -
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 . Depending on the outside unit setup (single outside unit setup or multi outside unit setup), the correct setting should be chosen. More [1-0] Description details on how to use the Cool/Heat selector option can be found in No indication Undefined situation. - Page 39 7 Configuration [2-20] Description [2-25] Flow % of max flow rate DC output (V) Activated. To stop the manual additional refrigerant charge operation (when the required additional 4 (default) refrigerant amount is charged), push BS3. If this function was not aborted by pushing BS3, the unit will stop its operation after 30 minutes.
- 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 [2-74] [2-82] Heat rejection cancellation setting temperature. Heating comfort setting. If the unit internal temperature is higher than the zero energy This setting is used in conjunction with setting [2-9]. dissipation setting temperature, the zero energy dissipation control [2-82] Heating comfort setting will start and cool down the unit.
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Page 42: 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 43: 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 44: 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 45: 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 46: 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 solution by a pump for 2-5 hours. -
Page 47: 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 48 10 Troubleshooting Malfunction code Contents Solution Main Sub code code Master/sub 1/sub 2 01/08/11 Voltage power shortage. ▪ Check if power supply is within the range. ▪ Correct phase order. 02/09/12 Reversed or open power supply phase. ▪ Check if power supply is within the range. ▪ Correct phase order. System test run not yet executed (system operation Execute system test run.
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Page 49: 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). -
Page 50: Piping Diagram: Outside Unit
11 Technical data 11 .3 Piping diagram: Outside unit SENPH SENPL 4D108945C Oil separator Charge port Stop valve (with service port Ø0.32 inch flare connection) Cooling water inlet Accumulator Cooling water outlet Charge port / Service port Compressor Filter Check valve Double tube heat exchanger / Plate heat exchanger Pressure relief valve Liquid receiver... -
Page 51: 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. RWEQ96~432TATJ∗ (208/230 V) Power Power supply supply water control 12 V DC output 3~ 60 Hz 208/230 V Cool/heat selector R10T... - Page 52 11 Technical data RWEQ96~432TAYD∗ (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 53 Daikin Texas Technology Park, 19001 Kermier Road, Waller, TX, 77484, U.S.A. 4P602454-1C 2020.08...