Daikin VRV-WII FXYCP10MY1, Installation Procedure

Page 1: ...technical data InstallationProcedure air conditioning systems EEDEN08 201 2b ...

Page 2: ...on procedure 1 Installation of outdoor 2 Introduction 3 Selection of location 5 Inspecting and handling the unit 6 Unpacking and placing the unit 7 Water piping work 8 Handling of the plate type heat exchanger 9 Field wiring 12 Refrigerant piping 21 Checks after installation 31 Test run 32 ...

Page 3: ...ding copper pipes or soldered parts may result in refrigerant leakage c near machinery emitting electromagnetic waves Electromagnetic waves may disturb the operation of the control system and result in a malfunction of the unit d where flammable gas may leak where there are carbon fiber or ignitable dust suspensions in the air or where volatile flammables such as thinner or gasoline are handled Op...

Page 4: ...atible with R410A refer to the product catalogs Total capacity quantity of indoor units Outside unit Total capacity index of indoor units Total quantity of indoor units RWEYQ10MY1 125 325 16 units RWEYQ20MY1 250 650 20 units RWEYQ30MY1 375 975 32 units 1 1 2 Standard operation limit The figures below assume following operating conditions for indoor and outside units Equivalent pipe length 7 5m Lev...

Page 5: ... 2 1000 x 780 x 550 x 3 Mass kg 150 150 x 2 150 x 3 Connections Refrigerant liquid pipe inch 3 8 5 8 3 4 mm ø9 5 ø28 6 ø19 1 Refrigerant gas pipe inch 7 8 1 1 8 1 3 8 mm ø22 2 ø28 6 ø34 9 Refrigerant discharge gas pipe 5 inch 3 4 7 8 1 1 8 mm ø19 1 ø22 2 ø28 6 Water piping connections Inlet pipe PT1 1 4B Internal Thread PT1 1 4B x 2 Internal Thread PT1 1 4B x 3 Internal Thread Outlet pipe PT1 1 4B...

Page 6: ... outside unit and the indoor unit may not exceed the allowable piping length 10 9 Refrigerant piping 5 Locations where the noise of the unit operating will not disturb nearby houses etc 6 Locations with airflow and ventilation holes capable of dissipating heat from the machine and where the ambient temperature around the outside unit is between 0 and 40 C and the humidity does not exceed 80 Necess...

Page 7: ...y be caused by the corrosion of metal materials and clogging of the heat exchanger 5 The refrigerant R410A itself is nontoxic nonflammable and is safe If the refrigerant should leak however its concentration may exceed the allowable limit depending on room size Due to this it could be necessary to take measures against leakage Refer to the chapter Caution for refrigerant leaks 1 3 Inspecting and h...

Page 8: ...lable M12 type foundation bolts nuts and washers The foundation bolts should be inserted 20 mm Fix 4 foundation bolts Support the unit with the foundation which is larger than the hatched area shown in the figure below 햲 Front side 햳 Position of foundation bolts 햴 Hole for a foundation bolt ø17 holes at 4 corners 햵 Avoid such a foundation where the unit is supported by 4 corner points CAUTION When...

Page 9: ...ng by dust Do not connect the drain outlet to the water outlet Install a strainer an optional accessory in the inlet of water piping within a distance of 1 5 m from the outside unit If sand waste or rust particles are mixed in the water circulation system metal materials will become corrosive Install insulation on the inlet outlet of water piping to prevent condensation and freezing Install insula...

Page 10: ...during severe winter due to freezing in addition to thermal loss 6 When you stop operation during night or winter it is necessary to take measures to prevent water related circuits from natural freezing in the area the ambient temperature drops below 0 C by water drain off keeping the circulation pump running warming up by a heater etc Freezing of water related circuits may result in any damage to...

Page 11: ...cle marks in the columns for corrosion or scale to develop 2 Corrosion has a tendency to occur when water temperature is high 40 C or higher and if metals with no protective coating whatever are directly exposed to water it would be a good idea to take effective measures against corrosion such as adding a corrosion inhibitor or deaeration treatment 3 In a condenser water circuit that uses a closed...

Page 12: ...id nitric acid etc because they have strong corrosive features Make sure that a valve has been reserved for each before the inlet connection port and after the outlet connection port Connect the piping for circulation of cleaning chemicals to the inlet piping of plate type heat exchanger Fill the cleaning solution of 50 60 C for a while in the plate type heat exchanger Then circulate the cleaning ...

Page 13: ...product in reversed phase may break the compressor and other parts Attach the power wire securely Introducing power with a missing N phase or with a mistaken N phase will break the equipment 1 7 1 Optional parts COOL HEAT Selector S1S Selector switch fan cool heat S2S Selector switch cool heat NOTES 1 When using the adaptor for sequential start refer to chapter Examples 2 For connection wiring to ...

Page 14: ...es sewage pipes lightning rods or telephone ground wires Gas pipes can explode or catch fire if there is a gas leak Sewage pipes no grounding effect is possible if hard plastic piping is used Telephone ground wires and lightning rods dangerous when struck by lightning due to abnormal rise in electrical potential in the grounding This machine includes an inverter device Connect earth and leave char...

Page 15: ...should be secured as described in Field line connection transmission wiring and COOL HEAT selector 5 Secure the wiring with the accessory clamps so that it does not touch the piping 6 Make sure the wiring and the EL COMPO BOX cover do not stick up above the structure and close the cover firmly Picking power line and transmission line 햲 Power supply wiring Pump operation output High voltage 햳 Conne...

Page 16: ...ity 햶 Terminal board field supply 햷 Indoor unit 햸 Never connect the power wire 햹 BS unit A 햺 BS unit B 햻 Last BS unit 햽 Cool only unit In case of RWEYQ20 30MY1 햲 Unit A Master unit 햳 Unit B 햴 Unit C 햵 TO IN D UNIT 햶 TO OUT D UNIT 햷 TO MULTI UNIT 햸 To COOL HEAT selector only Heat pump system 햹 To indoor unit 햺 To other systems Heat pump system C H Selector To IN D unit To OUT D unit To multi unit C...

Page 17: ...circuit shall be set between terminals 1 and 2 Contact specification 220 VAC 3mA 0 5A 햳 PC board A1P 햴 Mount an insulation sleeve 햵 Connection of interlock circuit Do not forget to connect an interlock circuit an auxiliary a contact of electromagnetic switch for the water pump to each outside unit Select without fail an auxiliary a contact able to switch minimum load of DC15V 1mA When connecting f...

Page 18: ...e sheathed vinyl cords with 0 75 to 1 25 mm2 or cables 2 core wires 3 core wire are allowable for the COOL HEAT selector only All transmission wire is field supply If the following limits should be exceeded be careful that any abnormal transmission may be caused Maximum wiring length 1000 m or less Total wiring length 2000 m or less Maximum branching 16 branching or less Wire length between outsid...

Page 19: ...ge breaker 햶 Attach insulation sleeves 햷 Power supply terminal block 햸 Grounding terminal 햹 Retain the ground wires along with the power wires using the accessory clamp A 햺 Grounding wire 햻 When wiring do not allow the ground wires to contact the compressor lead wires If the wires contact each other adverse effects may occur to other units 햽 When connecting two wires to one terminal ensure that th...

Page 20: ...g and ground jumper wiring 햺 Retain the power supply wiring pump operation output high voltage and ground wiring with the accessory clamp B to prevent them from touching with the stop valve for discharge gas 햻 Use the through hole cover for power jumper supply by cutting the hatched area 햽 Hatched area 햾 Insert the accessory clamp B in the hole of the bottom of electrical box 햿 Intake for transmis...

Page 21: ...ioned in the table below refer to the equipment design materials and service manual CAUTION A separate adapter sold separately as an accessory for external control of an outside unit becomes necessary when doing a demand operation from an external instruction setting of cooling and heating through a centralized remote controller for cooling and heating sold separately as an accessory and setting o...

Page 22: ...the system while the pump is not working 3Use a vacuum pump which can evacuate to 100 7 kPa 5Torr 755mmHg 1 8 1 Selection of piping material 1 Foreign materials inside pipes including oils for fabrication must be 30mg 10m or less 2 Use the following material specification for refrigerant piping Construction material Phosphoric acid deoxidized seamless copper for refrigerant Size Determine the prop...

Page 23: ... 햳 Horizontal line 햴 Ground 햵 Straight part of 500mm or more 햶 Local pipe 120mm length or more Precautions when selecting branch piping If the equivalent length of piping between the outside units and indoor units is 80m or longer be sure to enlarge the main pipe in the liquid side branch piping Depending on the length of the refrigerant piping the cooling heating capacity may drop but even in suc...

Page 24: ...Precautions when connecting pipes See the following table for flare part machining dimensions When connecting the flare nuts apply refrigerant oil to the inside and outside of the flares and screw them in by hand three or four times at first Use ester oil or ether oil See the following table for tightening torque Applying too much torque may cause the flares to crack After all the piping has been ...

Page 25: ...off the hatched area and use it as a cover for the drilled 햻 Hatched area 햽 Accessory pipe for discharge gas 햾 Accessory pipe for suction gas 햿 Guideline for pipe machining 헀 Accessory pipe for suction gas 2 헁 Brazing 헂 Accessory pipe for suction gas 1 헃 Before fitting to the product apply brazing Precautions for installation of units NOTES 1 The outside unit multi connection piping kit that is so...

Page 26: ...ping causing any damage to the outside unit 3 If the piping length between the outside unit connecting pipe kit or between the outside 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 Pattern 1 Pattern 2 Prohibition pattern To indoor unit Descending inclination Descending inclination Oil may collect in piping To indoor unit Change to pattern 1 o...

Page 27: ...ated to 100 7kPa within 2 hours repeat the operation of vacuum break and vacuum drying Then after leaving the system in vacuum for 1 hour confirm that the vacuum gauge does not rise 1 8 6 Pipe insulation After finishing the leak test and vacuum drying the piping must be insulated Take into account the following points Make sure to insulate the connection piping both liquid side and gas side and re...

Page 28: ... front cover NOTE Refer to the example of connection for the amount to be added Additional refrigerant charge procedure 1 normally Charge the refrigerant to the liquid pipe in its liquid state Since R410A is a mixed refrigerant its composition changes if charged in a state of gas and normal system operation would no longer be assured Make sure to use installation tools you exclusively use on R410A...

Page 29: ... refrigerant 햲 Pressure reducing valve 햳 Nitrogen 햴 Refrigerant tank 햵 With a siphon 햶 Measuring instrument 햷 Vacuum pump 햸 Val ve A 햹 Val ve B 햺 Charge hose 햻 Outside unit 햽 Gas side 햾 Liquid side 햿 Discharge gas side 헀 Suction gas side 헁 Shutoff valve service port 헂 To indoor unit 헃 To indoor units BS units 헄 Dotted lines represent onsite piping Heat pump system Heat recovery system ...

Page 30: ... then open the valve by turning 180 Start the additional refrigerant charge operation See Service precautions Label for detail If it is difficult to charge the refrigerant additionally decrease the water temperature or warm the refrigerant tank Warm the refrigerant tank with a stupe or a warm hot water of 40 degrees or less 3 After the system is charged with a specified amount of refrigerant press...

Page 31: ...he shutoff valve Doing so may break the valve body as the valve is not a backseat type Always use the hexagon wrench 3 Make sure to tighten the cap securely Closing shutoff valve 1 Remove the cap and turn the valve clockwise with the hexagon wrench JISB4648 2 Securely tighten the valve until the shaft contacts the main body seal 3 Make sure to tighten the cap securely For the tightening torque ref...

Page 32: ...s as the initial tightening 7 Do not forget to open the stop valve before starting operation 햲 Remove the cap and turn the valve counter clockwise with the hexagon wrenches until it stops 햳 Discharge gas side 햴 Liquid side 햵 Suction gas side 햶 Never remove the partition flange for any reason 햷 Full close on the suction gas side 1 9 Checks after installation After the installation check the followi...

Page 33: ...nnot be operated at a temperature outside the operation range 6 Check the LED on the PC board A1P in the outside unit to see if the data transmission is performed normally The master unit is the outside unit to which the transmission wiring for the indoor units is connected The other outside units are sub units 7 Using the push button switches BS1 5 on the P panel A1P of outside unit carry out a l...

Page 34: ...he shutoff valve of an outside unit is left closed Open the shutoff valve U1 The phases of the power to the outside units are reversed Exchange two of the three phases L1 L2 L3 to make a positive phase connection U1 U2 U4 No power is supplied to an outdoor or indoor unit including phase interruption Check if the power wiring for the outside units are connected correctly If the power wire is not co...

Page 35: ...sented therein Specifications are subject to change without prior notice Daikin Europe N V explicitly rejects any liability for any direct or indirect damage In the broadest sense arising from or related to the use and or interpretation of this publication All content is copyrighted by Daikin Europe N V VRV products are not within the scope of the Eurovent certification programme Naamloze Vennoots...