Daikin VRV IV RXMLQ8T7Y1B Series Installation And Operation Manual Download Page 1

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Installation and operation manual

VRV IV system air conditioner

English

Installation and operation

manual

VRV IV system air conditioner

RXMLQ8T7Y1B*
RXYLQ10T7Y1B*
RXYLQ12T7Y1B*
RXYLQ14T7Y1B*

Summary of Contents for VRV IV RXMLQ8T7Y1B Series

Page 1: ...Installation and operation manual VRV IV system air conditioner English Installation and operation manual VRV IV system air conditioner RXMLQ8T7Y1B RXYLQ10T7Y1B RXYLQ12T7Y1B RXYLQ14T7Y1B...

Page 2: ...18 19 20 21 22 23 24 25 Directivelor cu amendamentele respective Direktive z vsemi spremembami Direktiivid koos muudatustega Direktyvose su papildymais Direkt v s un to papildin jumos Smernice v plat...

Page 3: ...astaava kyll stysl mp tila M C Kylm aine N Varmuuspainelaitteen asetus P bar Valmistusnumero ja valmistusvuosi katso mallin nimikilpi Maxim ln p pustn tlak PS K bar Minim ln maxim ln p pustn teplota T...

Page 4: ...onnecting the electrical wiring 18 5 7 1 Field wiring Overview 18 5 7 2 Guidelines when knocking out knockout holes 19 5 7 3 To route and fix the transmission wiring 19 5 7 4 To connect the transmissi...

Page 5: ...INDICATIONOFINSTALLATIONINFORMATION 1 RECORD OF INDOOR UNIT MODELAND INSTALLATION SITE 2 RECORD FOR SETTINGS CONTENTS SEE INSTALLATION MANUAL SETTING 40 30 10 20 19 9 29 39 38 28 8 18 17 7 27 37 36 26...

Page 6: ...ating capacities ranging from 31 5 to 45 kW and cooling capacities rating from 28 to 40 kW In multi combination the heating capacity ranges from 50 to 135 kW and cooling capacity ranges from 45 to 120...

Page 7: ...ation see About the piping length in the installer reference guide Only use phosphoric acid deoxidised seamless copper 4 2 2 To select the piping size Determine the proper size using the following tab...

Page 8: ...e adapters for the change over from inch to mm pipes field supply The additional refrigerant calculation has to be adjusted as mentioned in 5 6 3 To determine the additional refrigerant amount on page...

Page 9: ...wed O Allowed If the piping length between the outdoor units exceeds 2 m create a rise of 200 mm or more in the gas line within a length of 2 m from the kit If Then 2 m a b 2 m 2 m a 2 m 2 m 200 mm 20...

Page 10: ...ssed See 5 1 2 To open the electrical component box of the outdoor unit on page 10 For service purposes the pushbuttons on the main PCB need to be accessed To access these pushbuttons the electrical c...

Page 11: ...t holes Avoid damaging the casing After making the knockout holes we recommend you remove the burrs and paint the edges and areas around the edges using repair paint to prevent rusting When passing el...

Page 12: ...nadequate torque may cause leakage of refrigerant and breakage of the stop valve cap NOTICE Pay attention that mentioned torque range is applicable for opening 19 1 25 4 mm stop valves only To close t...

Page 13: ...Wait until all oil has dripped out before continuing with the connection of the field piping in case the recovery was not complete 5 4 Checking the refrigerant piping 5 4 1 About checking the refrige...

Page 14: ...nt piping on page 13 5 4 4 To perform a leak test The leak test must satisfy the specifications of EN378 2 To check for leaks Vacuum leak test 1 Evacuate the system from the liquid and gas piping to 1...

Page 15: ...E Close the front panel before any refrigerant charge operation is executed Without the front panel attached the unit cannot judge correctly whether it is operating properly or not NOTICE In case of m...

Page 16: ...Weight factor 15 9 mm 0 18 15 mm 0 16 16 mm 0 18 19 1 mm 0 26 18 mm 0 24 22 2 mm 0 37 22 mm 0 35 5 6 4 To charge refrigerant Flow chart For more information see 5 6 5 To charge refrigerant on page 17...

Page 17: ...t outdoor unit operation If Then The additional refrigerant amount is smaller than 10 kg Perform steps 2 3 The additional refrigerant charge is larger than 10 kg Perform steps 2 8 3 Pre charging can b...

Page 18: ...refrigerant charge operation will automatically stop within 30 minutes If charging is not completed after 30 minutes perform the additional refrigerant charging operation again 5 6 7 Checks after char...

Page 19: ...2 left b Internal transmission wiring Q1 Q2 c Plastic bracket d Field supplied clamps 5 7 4 To connect the transmission wiring The wiring from the indoor units must be connected to the F1 F2 In Out te...

Page 20: ...ting the earth wire it is recommended to perform curling Multiple outdoor units To connect the power supply for multiple outdoor units to each other ring tongues have to be used No bare cable can be u...

Page 21: ...ent display s To access you can remove the front inspection cover of the front plate see figure Now you can open the inspection cover of the electrical component box front plate see figure You can see...

Page 22: ...e selected setting s value is done by pushing BS3 1 time Now BS2 is used to select the required value of the selected setting When the required value is selected you can define the change of value by...

Page 23: ...t Deactivated 1 Activated To stop the manual additional refrigerant charge operation when the required additional refrigerant amount is charged push BS3 If this function was not aborted by pushing BS3...

Page 24: ...ts Pipe size and pipe insulation Be sure that correct pipe sizes are installed and that the insulation work is properly executed Stop valves Be sure that the stop valves are open on both liquid and ga...

Page 25: ...splay idle Completion Description Abnormal completion Indication of malfunction code on the 7 segment display Refer to 7 5 Correcting after abnormal completion of the test run on page 25 to take actio...

Page 26: ...connection on PCB or actuator Discharge temperature too high R21T R22T Stop valve closed Refrigerant shortage Open stop valves Check refrigerant amount recharge unit Compressor casing temperature too...

Page 27: ...nection Transmission outdoor unit inverter INV2 transmission trouble A1P X20A X28A X40A Check connection INV1 unbalanced power supply voltage Check if power supply is within range INV2 unbalanced powe...

Page 28: ...llowing items before retrying autocharge procedure Check if the gas side stop valve is opened correctly Check if the valve of the refrigerant cylinder is opened Check if the air inlet and outlet of th...

Page 29: ...obstacles the wall heights of sides A C have no impact on service space dimensions Refer to the figure above for impact of wall heights of sides B D on service space dimensions In case of an installat...

Page 30: ...smission wiring refer to the service manual Position in switch box English Translation Position in switch box Position in switch box Legend A1P Main PCB A2P Noise filter PCB A3P Inverter PCB A4P SUB P...

Page 31: ...se of using Hydrobox units or AHU They can be found in the installation operation manual of the dedicated unit Latest information can be found in the technical engineering data 13 2 Operating the syst...

Page 32: ...ystem does not go into operation if the room temperature is low 20 C 13 3 2 To use the dry program WITHOUT cool heat changeover remote control switch To start 1 Press the operation mode selector butto...

Page 33: ...signate one of the user interfaces as the master user interface The displays of slave user interfaces show change over under centralised control and slave user interfaces automatically follow the oper...

Page 34: ...e unit Stop the operation The operation switch does NOT work well Turn OFF the power supply Malfunction Measure If the user interface display indicates the unit number the operation lamp flashes and t...

Page 35: ...related Autocharge operation related Capacity setting malfunction outdoor Abnormal low pressure drop faulty expansion valve Reversed power supply phase malfunction INV voltage power shortage System te...

Page 36: ...l and refrigerant from remaining in the system a small amount of refrigerant is kept flowing 15 2 9 Symptom Noise of air conditioners Indoor unit outdoor unit A continuous low hissing sound is heard w...

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Daikin VRV IV RXMLQ8T7Y1B Series, Installation And Operation Manual

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