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Daikin VRV II Series, Design, Installation & Testing Instructions, Page: 24 / 242

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Daikin VRV II Series Design, Installation & Testing Instructions Download Page 24

Installation

Si39-303

18

General Information

Method for 
Replacing 
Nitrogen 
(Brazing)

If brazing work is carried out without passing nitrogen gas through the pipes which are being brazed then 
this allows the formation of oxidation bubbles on the inside surface of the pipes. These oxidation bubbles 
are then carried along inside the pipes to cause damage to various members of the system such as valves 
or compressors and the system ceases to function properly.

In order to avoid this problem 

nitrogen is passed through the pipes while the soldering work is being 

carried out

. This operation is known as nitrogen replacement. (Air is replaced by nitrogen)

This is 

standard work practice for all brazing work

.

Important points:

1. The gas used must be nitrogen (oxygen, carbon dioxide and flon should not be used.)
2. A pressure regulator must be used.

Summary of Contents for VRV II Series

Page 1: ...Heat Pump 50Hz RXYQ5MY1B RXYQ8MY1B RXYQ10MY1B RXYQ12MY1B RXYQ14MY1B RXYQ16MY1B RXYQ18MY1B RXYQ20MY1B RXYQ22MY1B RXYQ24MY1B RXYQ26MY1B RXYQ28MY1B RXYQ30MY1B RXYQ32MY1B RXYQ34MY1B RXYQ36MY1B RXYQ38MY1B...

Page 2: ...handled confidently on the basis of a clear understanding of the special features of this system We have paid particular attention to points of difference in installation procedure between this system...

Page 3: ...nvolved in Individual Operations and Points to be Borne in Mind 15 4 Test Operation 62 4 1 Procedure and Outline 62 4 2 Operation When Power is Turned On 65 4 3 Outdoor Unit PC Board Layout 66 4 4 Fie...

Page 4: ...ant Leaks 194 9 1 Caution for Refrigerant Leaks 194 Part 3 Operation Manual 197 1 Safety Cautions 199 2 What to Do Before Operation 202 3 Remote Controller and Changeover Switch Name and Function of E...

Page 5: ...rs 216 8 10 The Outdoor Unit Fan does not Spin 216 8 11 The Display Shows 88 217 8 12 The Compressor in the Outdoor Unit does not Stop after a Short Heating Operation 217 8 13 The Inside of an Outdoor...

Page 6: ...Si39 303 iv Table of Contents...

Page 7: ...n Procedure 14 3 2 Work Involved in Individual Operations and Points to be Borne in Mind 15 4 Test Operation 62 4 1 Procedure and Outline 62 4 2 Operation When Power is Turned On 65 4 3 Outdoor Unit P...

Page 8: ...cassette corner FXKQ 25M 32M 40M 63M Ceiling mounted built in type FXSQ 20M 25M 32M 40M 50M 63M 80M 100M 125M Ceiling mounted duct type FXMQ 40M 50M 63M 80M 100M 125M 200M 250M Ceiling suspended type...

Page 9: ...FXZQ25M FXZQ32M FXZQ40M FXZQ50M Ceiling suspended type FXHQ32M FXHQ63M FXHQ100M Ceiling mounted cassette type Multi flow FXFQ25M FXFQ32M FXFQ40M FXFQ50M FXFQ63M FXFQ80M FXFQ100M FXFQ125M Wall mounted...

Page 10: ...Information 1 2 2 Outdoor Units RXYQ5M RXYQ8M 10M RXYQ12M 14M 16M RXYQ18M 20M 5HP 8 10HP 12 14 16HP 18 20HP RXYQ22M 24M 26M RXYQ28M 30M 32M 22 24 26HP 28 30 32HP RXYQ34M 36M RXYQ38M 40M 42M 34 36HP 38...

Page 11: ...oor Units 18 48HP are realized by combining 8 10 12 14 and 16HP System Capacity Number of units Module 5 8 10 12 14 16 5HP 1 8HP 1 10HP 1 12HP 1 14HP 1 16HP 1 18HP 2 20HP 2 22HP 2 24HP 2 26HP 2 28HP 2...

Page 12: ...ctable indoor units 20 20 22 32 32 32 Total capacity of connectable indoor units kW 25 2 65 5 28 0 72 8 30 8 80 0 34 0 88 4 36 5 94 9 39 3 102 1 HP 30HP 32HP 34HP 36HP 38HP 40HP System name RXYQ30M RX...

Page 13: ...0M 50M 63M 80M 125M VE Ceiling mounted cassette type Multi flow 600 600 FXZQ 20M 25M 32M 40M 50M Ceiling mounted cassette type Multi flow FXFQ 25M 32M 40M 50M 63M 80M 100M 125M Ceiling mounted cassett...

Page 14: ...uch that length of piping is kept to a minimum Piping should be kept within permissible limits in terms of length and height difference 2 Positioning of outdoor unit Position such that maintenance and...

Page 15: ...stem Design General Information 9 2 2 The Installation is of Vital Importance The analysis of major installation problems experienced during the year of 1988 is shown below How these installation prob...

Page 16: ...ting of remote controller and central control panel boundary work on areas such as connection of drain piping and humidification supply piping inspection and foundation 2 Keep a constant check on the...

Page 17: ...an the air filters be replaced easily 4 Have you indicated the size and location of the ceiling inspection ports Make sure there no other installations in the area above 5 Have you taken into account...

Page 18: ...y one or two remote controllers group or individual control 7 Assign central group Nos if using centralized control 8 Add field settings and optional equipment for indoor units 9 Add unit No if making...

Page 19: ...outdoor unit The outdoor unit model number should be inserted into the diagram RXYQ16M Insert name of refrigerant system PAC1 PAC2 Insert name of indoor unit FXCQ32M CQ32M Insert system name of indoor...

Page 20: ...rmation 3 Installation 3 1 Step by Step Installation Procedure The above list indicates the order in which the individual work operations are normally carried out but this order may be varied where lo...

Page 21: ...the liquid and gas pipes as pairs c Attention should be paid to the construction of the beam themselves since there are sometimes parts of the beam which cannot be used to accommodate through holes E...

Page 22: ...pension bolts must be strong enough to support the weight of the indoor unit 2 Optional features must be added to the indoor unit prior to installation 3 The model name should be checked prior to inst...

Page 23: ...ant does not leak out Actoin to avoid problem Cause of problem l Rainwater work water etc gets into pipes from outside l Moisture generated inside pipes due to condensation l Formation of oxides insid...

Page 24: ...inside the pipes to cause damage to various members of the system such as valves or compressors and the system ceases to function properly In order to avoid this problem nitrogen is passed through th...

Page 25: ...used according to the work area and term of work 1 Pinching method The end of the copper pipe is squeezed together and the gap brazed 2 Taping method The end of the copper pipe is covered with PVC ta...

Page 26: ...eon or carbon dioxide are used and oxygen carries the risk of explosions 2 Connect the charge hose from the pressure regulator to the service port on the liquid pipe side of the outdoor unit 3 Fit bla...

Page 27: ...standard or equivalent Size material thickness etc Specification Oxidized phosphorous seamless copper pipe Long pipe lengths or coiled pipe copper pipe with heat insulation coating should be used to a...

Page 28: ...should therefore be careful when selecting the nozzle tip If a small nozzle tip is used for brazing piping of large diameters such as 38 1 and 44 5 brazing flow becomes poor Table 1 Correlation of no...

Page 29: ...andard working practice to use the nitrogen replacement method when brazing Important points 1 Every effort must be made to avoid fire Clean area where brazing is to be performed and make sure that fi...

Page 30: ...ipe from the gauge bar adjust it and then carry out the flare processing Size from the dice surface to the copper tip in mm d Coat the inner and outer surface of the flare with refrigerator oil Ester...

Page 31: ...Si39 303 Installation General Information 25 Flaring Procedure...

Page 32: ...check that is no gas leak When you keep on tightening the flare nut with a spanner there is a point where the tightening torque suddenly increases From that position further tighten the flare nut the...

Page 33: ...ortant points 1 Only clean refrigeration oil should be used to coat the flange i e free from dirt or water 2 The correct amount of torque should be applied when tightening the flange bolts Standard to...

Page 34: ...operating conditions since there are occasions when the gas and liquid pipes also need to be thermally insulated Important points 1 The thickness of the thermal insulation material must be determined...

Page 35: ...is deemed a success If the pressure drops then the leak must be located See following page However if there is a change in the ambient temperature between the pressurizing stage and the time when you...

Page 36: ...ed with considerations given to vacuum drying and refrigerant additional charging which are operation steps following the air tightness test In order to conduct the air tight test with stop valves of...

Page 37: ...in the pipes will evaporate The evacuation of air conditioner piping provides the following effects 1 Vacuum drying 2 Removes air and nitrogen used in air tightness test from the inside of pipes There...

Page 38: ...e of vacuum 1 Exhaust velocity Exhaust volume is usually expressed as l min or m h The larger the number the faster vacuum id achieved Generally speaking the faster the exhaust velocity the larger and...

Page 39: ...gauge on the gauge manifold and the degree of vacuum of the vacuum pump 4 Calibration method 1 Connect a Pirani vacuum gauge and the gauge manifold vacuum gauge 0 760 mmHg to the vacuum pump at the s...

Page 40: ...for a further hour If even after 3 hours the vacuum has not reached 5 mmHg then check the system for a leak 2 Carry out maintained vacuum test Produce a vacuum in excess of 755 mmHg and do not releas...

Page 41: ...time 2 hours 2 Vacuum breaking 1st time Use nitrogen to raise pressure to 0 05MPa Since the nitrogen gas used to break the vacuum is dry nitrogen this process serves only to enhance the overall dryin...

Page 42: ...the additional charging during the test run Refrigerant Charging Instructions HFC401A are Quasi azeotropic refrigerants Therefore these refrigerants must be charged in the liquid state When charging...

Page 43: ...ed into equipment in the gaseous state the refrigerant components that evaporate sooner than others enter the equipment and the refrigerant that evaporate after others remain in the refrigerant cylind...

Page 44: ...pipes should not be bent Spacing of supports for horizontal piping c The length of pipe laid horizontally should be kept to a minimum Drain Trap Fit any indoor unit whose drain pipe connection is sub...

Page 45: ...socket and drain pipe to be connected without difficulty and prevents any undue strain being placed on the drain pan Important points 1 The drain pipe should be at least equal in size to that of the...

Page 46: ...CQ M Double flow 1 Rig drain piping The diameter of the drain pipe should be greater than or equal to the diameter of the connecting pipe vinyl tube pipe size 25 mm outer dimension 32 mm Keep the drai...

Page 47: ...e than 300 mm from the unit If converging multiple drain pipes install according to the procedure shown below Select converging drain pipes whose gauge is suitable for the operating capacity of the un...

Page 48: ...roller The unit will engage the test operation mode Press the operation mode selector button until selecting FAN OPERATION Then press the ON OFF button The indoor unit fan and drain pump will start up...

Page 49: ...until the screw head is less than 4 mm from the hose Wrap the attached sealing pad 10 over the clamp and drain hose to insulate Make sure that heat insulation work is executed on the following 2 spots...

Page 50: ...nit fan and drain pump will start up Check that the water has brained from the unit Press to go back to the first mode Note that the fan also starts rotating Attach the terminal box lid as before TEST...

Page 51: ...nformation 45 Ceiling Mounted Cassette Corner Type FXKQ M Drain Piping Caution Setting the unit at an angle opposite to the drain piping might cause leaks Note Use the drain outlet for maintenance to...

Page 52: ...Information Caution Drain piping connections Do not connect the drain piping directly to sewage pipes that smell of ammonia The ammonia in the sewage might enter the indoor unit through the drain pipe...

Page 53: ...cket up to the white tape Tighten the clamp until the screw head is less than 4 mm from the hose Wrap the attached sealing pad over the clamp and drain hose to insulate Insulate the drain hose inside...

Page 54: ...d connect a power supply and remote controller to the terminals Refer to the Installation Manuals Next press the inspection test operation button on the remote controller The unit will engage the test...

Page 55: ...303 Installation General Information 49 Ceiling Mounted Duct Type FXMQ M Note If installing central drain piping install according to the following right figure Install a drain trap for each indoor u...

Page 56: ...ain pipe should be greater than or equal to the diameter of the connecting pipe Vinyl tube pipe size 20 mm outer dimension 26 mm Keep the drain pipe short and sloping downwards at a gradient of at lea...

Page 57: ...mmonia in the sewage might enter the indoor unit through the drain pipes and corrode the heat exchanger Wall Mounted Type FXAQ M 2 Confirm that smooth drainage is achieved after the piping work Add 60...

Page 58: ...XYAP indoor unit use sheathed wire 2 Problems arising from the use of unsuitable cable a When cable less than 0 75 mm is used Where the control wiring is particularly long the transmission signals may...

Page 59: ...ing high static pressure indoor units the fan motors must have a large capacity Single phase 220 240V branch circuits are therefore required for each indoor unit Example Up to 10 2 5HP indoor units or...

Page 60: ...ble below indicates our recommendations as to the appropriate spacing of control and power cables where these are to be run side by side Notes 1 The figures are based on an assumed length of parallel...

Page 61: ...b The speed of the airflow should be taken into account when choosing air suction and distribution grills in order to keep wind noise to minimum Important points 1 The air discharge duct must be therm...

Page 62: ...g is particularly weak keep distances of 3m or more and use conduit tubes for power and transmission lines 2 In heavy snowfall areas select an installation site where snow will not affect operation of...

Page 63: ...the equipment to allow routine servicing and maintenance to be carried out without undue hindrance It is particularly important to bear in mind the work which will be required if the compressor needs...

Page 64: ...om of the unit 4 Lift the unit preferably with a crane and 2 belts of at least 8m long 5 When lifting the unit with a crane always use protectors to prevent belt damage and pay attention to the positi...

Page 65: ...red 3 When the foundation is built on a concrete floor rubble is not necessary However the surface of the section on which the foundation is built shall have rough finish 4 A drain ditch shall be made...

Page 66: ...id longitudinal foundation steel beam frame or concrete as indicated in figure below 1 Foundation bolt point 15 dia 4 positions 2 Depth of product 3 Shape of indoor unit s support leg and foundation b...

Page 67: ...eneral Information 61 Ex passing piping out through the front 1 Plug the areas marked with When the piping is routed from the front panel 2 Gas side piping 3 Liquid side piping Caution Caution label 1...

Page 68: ...The design pressure of this product is 3 8MPa Are pipe insulation materials installed securely Liquid and gas pipes need to be insulated Otherwise causes water leak Are respective stop valves on liqu...

Page 69: ...it PC board H2P flickers test operation 2Remote controller Indicates On Centralized Control on upper right Indicates Test Operation on lower left LED display 7 ON 7 OFF 9 Blink H1P H7P H8P Factory set...

Page 70: ...hat the indoor outdoor units can be operated normally When an abnormal noise due to liquid compression by the compressor can be heard stop the unit immediately and turn on the crankcase heater to heat...

Page 71: ...minutes to automatically set the address indoor outdoor address etc Status Outdoor unit Test lamp H2P Blinks Can also be set during operation described above Indoor unit If ON button is pushed during...

Page 72: ...Outdoor Multi outdoor 2 Set mode display LED 3 Mode setting switch 1 Microcomputer normal monitor 4 Local setting switch Connection terminal for transmission use DS1 DS2 DS3 HAP V3054 1 Microcomputer...

Page 73: ...rmal mode push the button for 4 seconds or more and operation then enters the field set mode 2 Select the desired mode No with the button 3 During group control and you want to set by each individual...

Page 74: ...et mode 2 Select the desired mode No with the button 3 Pushing the button select the first code No 4 Pushing the button select the second code No 5 Push the timer button and check the settings 6 Push...

Page 75: ...ter the FIELD SET MODE 3 Select the mode No 00 with BS2 BUTTON temperature setting and BS3 BUTTON temperature setting 4 Select the group No with BS9 BUTTON set A and BS10 BUTTON set B Group Nos increa...

Page 76: ...tion Set when filter sign is not to be displayed Display No display 12 22 0 Optional accessories output selection field selection of output for adaptor for wiring Indoor unit turned ON by thermostat O...

Page 77: ...pe Floor standing type Concealed Floor standing type Multi flow Double flow Corner type FXFQ FXCQ FXKQ FXSQ FXMQ FXHQ FXAQ FXLQ FXNQ Filter sign Ultra long life filter sign Remote controller thermosta...

Page 78: ...the air conditioners with the setting the units may start automatically after power failure reset or the main power supply turned on again return to the same operation condition as that of before powe...

Page 79: ...mounted type Standard 02 Wall mounted type Slight increase 03 Wall mounted type Normal increase Mode No First code No Second code No Setting Ceiling height 4 way Outlets 3 way Outlets 2 way Outlets 1...

Page 80: ...Rate Switching at Discharge Grille for Field Air Flow Rate Switching When the optional parts high performance filter etc is installed sets to change fan speed for securing air flow rate Follow the ins...

Page 81: ...plays only the group No within the range selected by the switch for setting each address 5 Push the timer button to define the selected group No 6 Push the button to return to the normal mode Even if...

Page 82: ...r about 1 minute on the liquid crystal display This is not an operative fault Centoral Remote Controller F1 F2 F1 F2 F1 F2 F1 F2 P1 P2 RC RC RC RC RC F1 F2 P1 P2 F1 F2 P1 P2 F1 F2 P1 P2 F1 F2 P1 P2 F1...

Page 83: ...peration mode setting by remote controller can be set and displayed by operation modes 0 through 19 ON OFF control impossible by remote controller Used when you want to turn on off by central remote c...

Page 84: ...rol by remote controller Control mode Operation OFF Temperature control Operation mode setting Unified operation individual operation by central remote controller or operation controlled by timer Unif...

Page 85: ...nit is disabled The master unit and slave unit can be discriminated with the LED indication as shown below Factory setting Dipswitch Setting item Description No Setting DS1 1 ON Cool Heat select Used...

Page 86: ...mode 1 Monitor mode H1P Push the BS1 MODE button one time Blinking MODE MODE Off H1P Setting mode 2 MODE On H1P Push and hold the BS1 MODE button for 5 seconds Push the BS1 MODE button one time Norma...

Page 87: ...7 7 7 During low noise operation 7 7 8 7 7 8 7 H3P to H5P LED display changes depending on setting No 2 3 4 Normal 7 7 8 7 7 7 7 During demand operation 7 7 8 7 7 7 8 H3P to H5P LED display changes de...

Page 88: ...nt collection mode 22 Night time low noise setting Sets automatic nighttime low noise operation in a simple way The operating time is based on Starting set and Ending set 25 Low noise setting Sets low...

Page 89: ...he applicable outdoor unit from operating should there be any faulty part in multi outdoor unit system Since the comfortable environment is extremely impaired prompt replacement of the part is require...

Page 90: ...11 Sequential operation setting 8 7 7 8 7 8 8 OFF 8777778 ON 8777787 12 External low noise demand setting 8 7 7 8 8 7 7 External low noise demand NO 8777778 External low noise demand YES 8777787 13 A...

Page 91: ...OFF 8777778 ON 8777787 29 Capacity precedence setting 8 7 8 8 8 7 8 OFF 8777778 ON 8777787 30 Demand setting 1 8 7 8 8 8 8 7 60 demand 8777778 70 demand 8777787 80 demand 8777877 32 Continuous demand...

Page 92: ...umber of zone units excluding outdoor and BS unit 9 7 7 8 7 8 8 Lower 6 digits 12 Number of terminal blocks 9 7 7 8 8 7 7 Lower 4 digits upper 13 Number of terminal blocks 9 7 7 8 8 7 8 Lower 4 digits...

Page 93: ...er which translates to 16 4 2 22 base 10 number In other words the address is 22 The number of terminal blocks for No 12 and 13 is expressed as an 8 digit binary number which is the combination of fou...

Page 94: ...outdoor unit system simultaneously in accordance with unified master outdoor unit by indoor unit remote controller Set cool heat for more than one outdoor unit system simultaneously in accordance with...

Page 95: ...ely for Each Outdoor Unit System by Cool Heat Switching Remote Controller It does not matter whether or not there is outdoor outdoor unit wiring Set outdoor unit PC board DS1 1 to outdoor factory set...

Page 96: ...rol adapter on either the outdoor outdoor indoor outdoor or transmission line Set outdoor unit PC board DS1 1 to Indoor factory set In setting mode 1 set the outdoor unit you want to give cool heat se...

Page 97: ...d change the following items to Install cool heat switching remote controller on the group master outdoor unit Set SS1 on the group master outdoor unit PC board Supplementation on and When switching c...

Page 98: ...ber No 0 to No 31 Address No Outdoor unit PCB LED Set with setting mode 2 Adapter PCB No 0 No 1 No 2 No 3 No 4 No 30 No 31 DS2 DS1 87 77777 87 77778 87 77787 87 77788 87 77877 87 88887 87 88888 0 1 2...

Page 99: ...the low noise instructions are neglected to switch to normal operation Set by Setting Mode 2 B When the low noise operation is carried out automatically at night The outdoor unit external control ada...

Page 100: ...Test Operation Si39 303 94 General Information Image of operation in the case of A Image of operation in the case of B Image of operation in the case of A B...

Page 101: ...the External low noise Demand YES Set by Setting Mode 2 Set the Demand 1 level setting on the outdoor unit PCB as the need arises During the demand level 1 instruction the power consumption can be sa...

Page 102: ...is set to ON OFF has been set at factory the power consumption can be set with the Demand 1 level setting 70 of rated power consumption has been set at factory Power consumption Rated power consumptio...

Page 103: ...mode 2 H1P on In setting 1 push and hold the BS1 MODE button for more than 5 seconds Setting mode 2 is entered and H1P lights Push the BS2 SET button several times and match the LED display with the S...

Page 104: ...de 3 26 Night time low noise start setting PM 8 00 PM 10 00 Factory setting PM 0 00 27 Night time low noise end setting AM 6 00 AM 7 00 AM 8 00 Factory setting 29 Capacity precedence setting Low noise...

Page 105: ...LIQ SUCTION and Oil equalizing Stop valve closed Is all refrigerant charged Is all refrigerant charged YES YES NO Turn off the power Charge through Service port of LIQ Stop valve Open LIQ SUCTION Stop...

Page 106: ...s If the charging is not complete within 30 minutes set the A Additional refrigerant charging operation again to start charging When the charging immediately stops even by restarting the refrigerant i...

Page 107: ...4 4 2 7 Check Operation To prevent any trouble in the period of installation at site the system is provided with a test operation mode enabling check for incorrect wiring stop valve left in closed com...

Page 108: ...ration level of refrigerant to a humanly space is limited to 0 35kg m3 for R407C and 0 44kg m3 for R410A Pay special attention to the place such as a basement etc where refrigerant can stay since refr...

Page 109: ...alarm device linked to a mechanical ventilator in the smallest room then the next smallest room will become the measurement target Step 3 Calculate the refrigerant density using the results of the cal...

Page 110: ...urses of action Action 1 Making openings which will allow the air to flow freely into the room Make openings above and below the door which are each equivalent in size to 0 15 or more of the floor are...

Page 111: ...on the back of the outdoor unit external notice board as this information will be required for servicing the system c Explain to the customer how to operate the equipment and let him try it d Assembl...

Page 112: ...h Ceiling Mortar mineral wool tile Fiberglass Saroncross finish Average Absorbed Sound Room with Approx 50 m Floor Area 0 05 0 12 0 25 Typical office Estimated value to be added to catalogue value 11...

Page 113: ...perating noise by about 2 dB to 68 dB 7 1 3 Calculating Operating Noise When two or more units are running at the same time the amount of operating noise they produce rises The total amount of noise p...

Page 114: ...unit and to make a slope V3084 When the piping length between the multi connection kits or between multi connection kit and outdoor unit is 2m or more prepare a vertical projection part 200mm or more...

Page 115: ...m or less Allowable Level Difference Outdoor Unit Outdoor Unit 5m or less Outdoor Unit Indoor Unit 50m or less when an outdoor unit is lower than indoor units 40m or less Indoor Unit Indoor Unit 15m o...

Page 116: ...e 1m calculation purposes Total extension length Total piping length from outdoor unit to all indoor units 300m Between outdoor branch and outdoor unit Only for RXYQ18 or more Actual pipe length Pipin...

Page 117: ...culation purposes Total extension length Total piping length from outdoor unit to all indoor units 300m Between outdoor branch and indoor unit Only for RXYQ18 or more Actual pipe length Piping length...

Page 118: ...al piping length from outdoor unit to all indoor units 300m Between outdoor branch and indoor unit Only for RXYQ18 or more Actual pipe length Piping length from outdoor branch to outdoor unit 10m Appr...

Page 119: ...example in case of refnet joint header indoor units 1 2 3 4 5 6 3 example in the case of refnet header indoor units 1 2 3 4 5 6 7 8 Refrigerant branch kits can only be used with R410A Outdoor unit cap...

Page 120: ...7 4 3 How to choose an outdoor branch kit needed if the outdoor unit capacity type is RXYQ18 or more Choose from the following table in accordance with the number of outdoor units Indoor capacity inde...

Page 121: ...utdoor branches part B Choose from the following table in accordance with the total capacity of all the outdoor units connected below this Unit mm Piping between outdoor branch and indoor unit part C...

Page 122: ...r branch and outdoor unit part C Unit mm Oil equalizing line Only for RXYQ18 or more part D Unit mm indoor capacity type Piping size outer diameter Gas pipe Liquid pipe 20 25 32 40 50 type 12 7 6 4 63...

Page 123: ...otal length m of liquid piping size at 22 2 0 25 Total length m of liquid piping size at 19 1 0 17 Total length m of liquid piping size at 15 9 0 11 Total length m of liquid piping size at 12 7 0 054...

Page 124: ...Appendix Si39 303 118 General Information 3P114237A...

Page 125: ...ON MANUAL of outdoor unit Installation of refrigerant pipes between outdoor and indoor units need to arrange for REFNET JOINT and REFNET HEADER Combination of outdoor units follow Engineering Data Gas...

Page 126: ...tdoor units multi connection piping connect right according to the INSTALLATION MANUAL of outdoor unit Pipe size selection and cutting position of JOINT According to the following table cut the joint...

Page 127: ...Si39 303 Appendix General Information 121 7 7 1 In case of Front Piping Illustration External BHFP22M90 BHFP22M135 BHFP22M90...

Page 128: ...Appendix Si39 303 122 General Information BHFP22M135 Installation of Gas Side Pipes Cutting the Reducer 1 and Gas Side Attached Pipe 3 Connection Piping BHFP22M90...

Page 129: ...Si39 303 Appendix General Information 123 BHFP22M135 Refer to P 122 for Table 6 and P 120 for Table 7 8 and 9 Installation of liquid side pipes and oil pipe BHFP22M90 Refer to P 120 for Table 4 and 5...

Page 130: ...Appendix Si39 303 124 General Information BHFP22M135 Refer P 120 for Table 7 8 and 9 After connection piping...

Page 131: ...brazing and piping work under the outdoor unit BHFP22M90 Cutting the joint and reducer According to table 4 and 5 cut the joint and reducer for use Connection piping Connect pipes with joint Refer to...

Page 132: ...1 REFNET Joint KHRP26M22T KHRP26M33T KHRP26M72T KHRP26M73T KHRP26M73TP Gas Side Insulation Insulation Liquid Side V3041 Gas Side Insulation Insulation Liquid Side V3042 Gas Side Insulation Insulation...

Page 133: ...6M33H KHRP26M72H KHRP26M73H KHRP26M73HP V3046 Gas Side Liquid Side Insulation Insulation V3047 Gas Side Liquid Side Insulation Insulation V3048 Gas Side Liquid Side Insulation Insulation V3049 Gas Sid...

Page 134: ...in the kit installation manual 2 REFNET header If the selected field pipe differs from the branch pipe in size cut the connection with a pipe cutter as shown below Fit a stop end on all open branch pi...

Page 135: ...el Unit No Group No Field settings C H SELECT setting mode 1 Tc IND H M L C H SELECT setting DS1 1 Te ON OFF H M L Low noise operation Defrost SETTING ON OFF Sequential start Refrigerant addition repl...

Page 136: ...Room 9 G NG Room 10 G NG Room 11 G NG Room 12 G NG Room 13 G NG Room 14 G NG Room 15 G NG Room 16 G NG Room 17 G NG Room 18 G NG Room 19 G NG Room 20 G NG Room 21 G NG Room 22 G NG Room 23 G NG Room...

Page 137: ...NG Room 5 G NG Room 6 G NG Room 7 G NG Room 8 G NG Room 9 G NG Room 10 G NG Room 11 G NG Room 12 G NG Room 13 G NG Room 14 G NG Room 15 G NG Room 16 G NG Room 17 G NG Room 18 G NG Room 19 G NG Room 20...

Page 138: ...D WHITE BLACK A A A Suction air temperature Thermometer Temperature differential 9 11deg when cooling 2 3 5deg when heating C Discharge air temperature Thermometer C Compressor discharge pressure Pres...

Page 139: ...C Room37 C Room38 C Room39 C Room40 C Fan rotation direction Visual inspection Forward rotation Room 1 G NG Room 2 G NG Room 3 G NG Room 4 G NG Room 5 G NG Room 6 G NG Room 7 G NG Room 8 G NG Room 9 G...

Page 140: ...Appendix Si39 303 134 General Information 7 10 Piping System Diagrams 7 10 1 Outdoor Unit RXYQ5MY1B...

Page 141: ...Si39 303 Appendix General Information 135 RXYQ8MY1B RXYQ10MY1B RXYQ12MY1B 4D040338A...

Page 142: ...Appendix Si39 303 136 General Information RXYQ14MY1B RXYQ16MY1B 4D040339A...

Page 143: ...quid line temperature R3T Thermistor for gas line temperature DU220 602D Heat exchanger Gas piping connection port Liquid piping connection port Flare connection Flare connection 15 9 or less Attached...

Page 144: ...Appendix Si39 303 138 General Information 7 11 Wiring Diagrams 7 11 1 Outdoor Unit RXYQ5MY1B...

Page 145: ...Si39 303 Appendix General Information 139 RXYQ8MY1B RXYQ10MY1B RXYQ12MY1B 3D038582...

Page 146: ...Appendix Si39 303 140 General Information RXYQ14MY1B RXYQ16MY1B 3D038058...

Page 147: ...Si39 303 Appendix General Information 141 7 11 2 Field Wiring RXYQ5 16MY1B 3D040746...

Page 148: ...Appendix Si39 303 142 General Information RXYQ18 32MY1B 3D040747...

Page 149: ...Si39 303 Appendix General Information 143 RXYQ34 48MY1B 3D040748...

Page 150: ...of Problem and Remedial Action Multiple core cable has been used for at least part of the interconnecting wiring between the remote controller and the indoor units This has resulted in signal interfer...

Page 151: ...is operating but there is no flow of warm air from the indoor unit in heating mode Source of Problem and Remedial Action The connecting cables and the corresponding piping were not correctly matched...

Page 152: ...ared Main Points Duct types 40 125 require a drain trap Reason There is resistance on the air inlet side caused by the heat exchanger and air filter and this in turn creates negative pressure in relat...

Page 153: ...ed in the indoor unit itself Source of Problem and Remedial Action The system was pressurized from the liquid pipe side and the gas pipes were therefore not pressurized The system was then left under...

Page 154: ...that branches meet the main pipe either horizontally or vertically at an angle of exactly 90 degrees 2 REFNET header The REFNET header is a lateral flow pipe and should be fitted so as to allow horiz...

Page 155: ...have expanded and contracted which places stress on soldered parts Cracks have formed because of repeated expansion and contraction Remedial Action Fit the pipe with a loop as shown in the below drawi...

Page 156: ...he centralized control group number cannot be set Inverter K Series Situation An attempt was made to set the centralized control group number with the indoor unit remote controller but 00 cannot be se...

Page 157: ...e the central remote controller is disconnected Remedial Action Set a centralized control group No for each indoor unit with the respective remote controllers Connect the connector for setting the mas...

Page 158: ...Appendix Si39 303 152 General Information...

Page 159: ...l 167 6 2 Connecting the Refrigerant Piping 168 6 3 Example of Connection 173 6 4 Leak test and Vacuum Drying 175 6 5 Pipe Insulation 177 6 6 Additional refrigerant charge 178 7 Field Wiring 180 7 1 O...

Page 160: ...10A does not contain any chlorine does not destroy the ozone layer and does not reduce the earth s protection against harmful ultraviolet radiation R410A can contribute slightly to the greenhouse effe...

Page 161: ...1 1 Combination The indoor units can be installed in the following range Always use appropriate indoor units compatible with R410A To lean which models of indoor units are compatible with R410A refer...

Page 162: ...plied Accessories 20 10 0 5 10 15 15 5 20 10 15 20 25 30 30 D C 10 5 0 10 15 20 25 30 35 40 45 15 14 10 20 25 27 27 30 30 B 43 A 5 RXYQ5 type Name Clamp 1 Clamp 2 Clamp 3 Others Quantit y 9 pcs 2 pcs...

Page 163: ...n appropriate kit dedicated for your system Pipe size reducer For R410A only Always use an appropriate kit dedicated for your system To select an optimum refrigerant branching kit refer to 6 Refrigera...

Page 164: ...ether oil Synthetic ether oil Synthetic ether oil Synthetic ether oil Synthetic ether oil Oil charge volume I 1 9 1 6 1 9 1 6 1 9 1 6 1 9 1 6 1 9 1 6 1 9 1 6 1 9 1 6 1 9 1 6 1 6 1 9 1 6 1 9 1 6 1 6 1...

Page 165: ...frigerant liquid pipe inch 6 8 6 8 6 8 6 8 mm 19 1 19 1 19 1 19 1 Oil equalizing pipe inch 1 4 1 4 1 4 1 4 mm 6 4 6 4 6 4 6 4 Compressor RXYQ42MY1B RXYQ44MY1B RXYQ46MY1B RXYQ48 MY1B Oil type Synthetic...

Page 166: ...7 2 0 7 2 0 7 1 1 0 7 1 1 0 7 1 1 1 1 2 Model RXYQ30MY1B RXYQ32MY1B RXYQ34MY1B RXYQ36MY1B RXYQ38MY1B RXYQ40MY1B Power supply Phase 3N 3N 3N 3N 3N 3N Frequency Hz 50 50 50 50 50 50 Voltage V 380 415 38...

Page 167: ...Si39 303 Main Components Installation Manual 161 2 Main Components For main components and function of the main components refer to the Engineering Data Book and the Service Manual Si39 302...

Page 168: ...o block the wind Caution 1 An inverter air conditioner may cause electronic noise generated from AM broadcasting Examine where to install the main air conditioner and electric wires keeping proper dis...

Page 169: ...Locations where equipment that produces electromagnetic waves is found The electromagnetic waves may cause the control system to malfunction preventing normal operation Locations where flammable gase...

Page 170: ...the bottom of the unit 4 Lift the unit preferably with a crane and 2 belts of at least 8m long 5 When lifting the unit with a crane always use protectors to prevent belt damage and pay attention to th...

Page 171: ...corners Caution 1 Prepare a water drainage channel around the foundation to drain waste water from around the unit 2 If the unit is to be installed on a roof check the strength of the roof and its dra...

Page 172: ...d Placing the Unit Si39 303 166 Installation Manual Ex passing piping out through the front 1 Plug the areas marked with When the piping is routed from the front panel 2 Gas side piping 3 Liquid side...

Page 173: ...when adding refrigerant Installation tools Make sure to use installation tools gauge manifold charge hose etc that are exclusively used for R410A installations to withstand the pressure and to preven...

Page 174: ...in the installation manual that comes with the kit Front connection Remove the shutoff valve cover to connect Side bottom connection Remove the knock holes on the bottom frame and route the piping und...

Page 175: ...ion manual delivered with the kit Mount the REFNET joint so that it branches either horizontally or vertically Mount the REFNET header so that it branches horizontally 4 Pipe connection Only use the f...

Page 176: ...first refrigerant branching kit 5 Indoor unit Gas side RXYQ5MY1B type 15 9 19 1 Minimum thickness 1 00mm RXYQ8MY1B type 19 1 22 2 Minimum thickness 1 00mm RXYQ10MY1B type 22 2 25 4 Minimum thickness...

Page 177: ...vel or slightly upward to avoid the risk of oil detention to the piping side Pattern 1 Pattern 2 Prohibited pattern Change to pattern 1 or pattern 2 to indoor unit Piping between outdoor units Piping...

Page 178: ...ited pattern to indoor unit to indoor unit Oil collects to the stopping outdoor unit Change to pattern 1 or pattern 2 Unit A Unit B Unit C Unit C Unit A Unit B to indoor unit Change as shown in the fi...

Page 179: ...nd indoor unit part C Oil equalizing line part D Piping between outdoor branches part B Piping between outdoor unit and refrigerant branch kit part A RXYQ5 type RXYQ8 10 type RXYQ12 22 type RXYQ24 typ...

Page 180: ...Refrigerant Piping Si39 303 174 Installation Manual...

Page 181: ...piping work is carried out during the raining season or over a long period of time rainwater may enter the pipe during work After evacuating the system for 2 hours pressurize the system to 0 05MPa va...

Page 182: ...o tighten the flare nut When connecting a flare nut coat the flare inner and outer faces with etheral oil or ester oil and hand tighten the nut 3 to 4 turns as the initial tightening Flare shape and f...

Page 183: ...ulating them may cause leaking The gas piping can reach temperatures of 120 C Be sure the insulation used can withstand such temperatures If you think the humidity around the cooling piping might exce...

Page 184: ...state of gas and normal system operation would no longer be assured Before filling check whether the tank has a siphon attached or not How to fill a tank with a siphon attached Other ways of filling...

Page 185: ...ing line shutoff valve liquid line shutoff valve and valves A and B above must be left fully closed start the additional refrigerant charge operation 2 After the system is charged with a specified amo...

Page 186: ...hase protection circuit operation Reversed phase detection is not performed while the product is operating If there exists the possibility of reversed phase after an momentary black out and the power...

Page 187: ...d fuses Transmission line selection RXYQ5MY1B 3 50Hz 380 415V 20A 0 75 1 25mm2 RXYQ8MY1B 3 50Hz 380 415V 30A 0 75 1 25mm2 RXYQ10MY1B 3 50Hz 380 415V 30A 0 75 1 25mm2 RXYQ12MY1B 3 50Hz 380 415V 30A 0 7...

Page 188: ...ter blocking off all power Always ground wires In accordance with national regulations of the pertinent country Do not connect the ground wire to gas pipes sewage pipes lightning rods or telephone gro...

Page 189: ...ually using the accessory clamps 1 11 Grounding wire 12 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 othe...

Page 190: ...8 When routing out the inter unit wirings from the opening for piping 9 When routing out the power ground wires from the front 10 When routing out the ground wires from the left side 11 Grounding wir...

Page 191: ...tightening the terminal screws A screwdriver with a small head will strip the head and make proper tightening impossible Over tightening the terminal screws may break them See the table below for tigh...

Page 192: ...6 1 2 C H SELECTOR TO IN D UNIT TO OUT D UNIT TO MULTI UNIT A1P 3 A B C F1 F2 F1 F2 Q1 Q2 Q1 Q2 Q1 Q2 A1P 1 4 7 8 9 5 6 6 6 2 3 1 Unit A Base unit 2 Unit B 3 Unit C 4 TO IN D UNIT 5 TO OUT D UNIT 6 T...

Page 193: ...ial start Make the outdoor unit cable connections shown below The outdoor unit PC board A1P is factory set at Sequential start available Setting the cool heat operation heat pump unit only 1 Performin...

Page 194: ...main unit through the conduit hole of the wiring mounting plate optional parts or from a knock out hole to be made in the unit s bottom plate 2 4 5 6 7 6 8 10 9 3 1 Electric wiring diagram printed on...

Page 195: ...ing should be secured as described in 7 4 Field line connection Secure the wiring with the accessory clamps so that it does not touch the piping Make sure the wiring and the electric box lid do not st...

Page 196: ...s is connected The interconnecting wiring between the outdoor units must be 30 m in length at maximum Caution Be sure to keep the power line and transmission line apart from each other Be careful abou...

Page 197: ...d make sure that it has been carried out according to the instructions described in this manual according to the wiring diagrams and according to local and national regulations 3 Pipe sizes and pipe i...

Page 198: ...etting method refer to the Service Precautions label attached at the position shown in the figure on the right Electric box lid in outdoor unit Remember the actual settings you have made must be recor...

Page 199: ...led an error code U3 is displayed In this case perform check operation referring to 8 2 Test run After the test run when handing the unit over to the customer make sure the electric box lid the servic...

Page 200: ...ration level of refrigerant to a humanly space is limited to 0 35kg m3 for R407C and 0 44kg m3 for R410A Pay special attention to the place such as a basement etc where refrigerant can stay since refr...

Page 201: ...alarm device linked to a mechanical ventilator in the smallest room then the next smallest room will become the measurement target Step 3 Calculate the refrigerant density using the results of the cal...

Page 202: ...urses of action Action 1 Making openings which will allow the air to flow freely into the room Make openings above and below the door which are each equivalent in size to 0 15 or more of the floor are...

Page 203: ...ller 212 6 6 Precautions for group control system or two remote controller control system 213 7 Optimum Operation 214 8 Following Symptoms are not Air Conditioner Troubles 215 8 1 The System does not...

Page 204: ...ce Applicable model RXYQ5MY1B REYQ8MY1B RXYQ8MY1B REYQ10MY1B RXYQ10MY1B REYQ12MY1B RXYQ12MY1B REYQ14MY1B RXYQ14MY1B REYQ16MY1B RXYQ16MY1B REYQ18MY1B RXYQ18MY1B REYQ20MY1B RXYQ20MY1B REYQ22MY1B RXYQ22M...

Page 205: ...fan is rotating at high speed it will cause injury The refrigerant in the air conditioner is safe and normally does not leak If the refrigerant leaks inside the room the contact with a fire of a burn...

Page 206: ...out and stays around the air conditioner a fire may break out In order to avoid electric shock or fire make sure that an earth leakage breaker is installed Be sure the air conditioner is electrically...

Page 207: ...y be damaged Never pull or twist the electric wire of a remote controller It may cause the unit to malfunction Do not operate the air conditioner when using a room fumigation type insecticide Failure...

Page 208: ...ntrol system ask your Daikin dealer for the operation that corresponds to your system Outdoor units Names and functions of parts RXYQ series REYQ series Cool heat changeover remote control switch Oper...

Page 209: ...ries REYQ series 1 On off button Press the button and the system will start Press the button again and the system will stop 2 Operation lamp red The lamp lights up during operation 3 Display changeove...

Page 210: ...procedure Programming start and stop of the system with timer 16 Inspection test operation button This button is only used by qualified service persons for maintenance purposes 17 Programming time but...

Page 211: ...he air inlet or outlet Objects touching the fan at high operating speed can be dangerous Never remove the fan guard of the outdoor unit A fan rotating at high speed without the fan guard is very dange...

Page 212: ...nd effective operation To avoid condensation and water dripping out the unit If the temperature or the humidity is beyond these conditions safety devices may work and the air conditioner may not opera...

Page 213: ...tion can be selected only by REYQ series The fan may keep on running for about 1 minute after the heating operation stops The air flow rate may adjust itself depending on the room temperature or the f...

Page 214: ...ect the fan speed of your preference Press air flow direction adjust button Refer to the chapter Adjusting the air flow direction for details Stopping the system Press the on off button once again The...

Page 215: ...r details Stopping the system Press the on off button once again The operation lamp goes off and the system stops operation Notes Do not turn off power immediately after the unit stops but wait for at...

Page 216: ...direction can be adjusted in one of the following ways The air flow flap itself adjusts its position The air flow direction can be fixed by the user Automatic and desired position Notes The movable l...

Page 217: ...e timer stop For setting the timer start Press the programming time button and set the time for stopping or starting the system Each time this button is pressed the time advances or goes backward by 1...

Page 218: ...ssible to changeover to program dry with slave remote controllers if the system is in cooling operation set by the master remote controller How to designate the master remote controller RXYQ series RE...

Page 219: ...ng if your unit is of the following control system type Group control system One remote controller controls up to 16 indoor units All indoor units are equally set Two remote controller control system...

Page 220: ...utlet of the unit It may cause deterioration in the effect or stop the operation Turn off the main power supply switch to the unit when the unit is not used for longer periods of time If the switch is...

Page 221: ...hows changeover under control it shows that this is a slave remote controller When the cool heat changeover remote control switch is installed and the display shows changeover under control This is be...

Page 222: ...drain pump optional accessories is in operation this noise is heard A pishi pishi squeaking sound is heard when the system stops after heating operation Expansion and contraction of plastic parts caus...

Page 223: ...n normal condition This continues for one minute 8 12 The Compressor in the Outdoor Unit does not Stop after a Short Heating Operation This is to prevent oil and refrigerant from remaining in the comp...

Page 224: ...ically restarts immediately after the power supply is recovered Check if no fuse has blown or breaker has worked Change the fuse or reset the breaker if necessary 2 If the system goes into fan only op...

Page 225: ...i39 303 Troubleshooting Operation Manual 219 Check if the heat source of the room is excessive Check if direct sunlight enters the room Use curtains or blinds Check if the air flow angle is not proper...

Page 226: ...Troubleshooting Si39 303 220 Operation Manual...

Page 227: ...Part 4 Precautions for New Precautions for New Precautions for New Precautions for New Refrigerant R410A Refrigerant R410A Refrigerant R410A Refrigerant R410A 1 Precautions for New Refrigerant R410A...

Page 228: ...mixture refrigerant mixture of two or more refrigerants having similar boiling points 3 The design pressure is different at each product Please refer to the installation manual for each product Refer...

Page 229: ...New Refrigerant R410A 223 Thermodynamic characteristic of R410A Temperature Steam pressure kPa Liquid Vapor Density kg m3 Liquid Vapor Specific heat at constant pressure kJ kgK Liquid Vapor Specific e...

Page 230: ...ed in high pressure vessels Although those vessels are durable and strong careless handling can cause damage that can lead to unexpected accidents Do not drop vessels let them fall apply impact or rol...

Page 231: ...fold Charge hose 2Do not use the same tools for R22 and R410A 2Thread specification differs for R410A and R407C Charging cylinder 2Weighting instrument used for HFCs Gas detector 2The same tool can be...

Page 232: ...pipe extension margin of 0 to 0 5mm was provided for flaring For R410A air conditioners perform pipe flaring with a pipe extension margin of 1 0 to 1 5mm For clutch type only Conventional tool with p...

Page 233: ...check valve Specifications 2 Discharge speed Maximum degree of vacuum 50 l min 50Hz 100 7 kpa 5 torr 755 mmHg 60 l min 60Hz 2 Suction port UNF7 16 20 1 4 Flare UNF1 2 20 5 16 Flare with adapter Diffe...

Page 234: ...gen 5 Refrigerant oil Air compal Specifications 2 Contains synthetic oil therefore it can be used for piping work of every refrigerant cycle 2 Offers high rust resistance and stability over long perio...

Page 235: ...with and without hand operate valve that prevents refrigerant from outflow Differences 2 Pressure proof hose 2 Change in service port diameter 2 Use of nylon coated material for HFC resistance 8 Charg...

Page 236: ...liquid refrigerant charging 2 A manifold with separate ports for HFCs and previous refrigerants is equipped as standard accessories Differences 2 Measurement is based on weight to prevent change of mi...

Page 237: ...FXNQ M 52 Wall Mounted Type FXAQ M 51 Drain Trap 38 E Electrical Specifications 160 Electrical Work 52 Excessive noise due to incorrect angling of REFNET joints 148 External Appearance 3 F Field line...

Page 238: ...eration 93 Setting of Refrigerant Additional Charging Operation 99 Setting the Master Remote Controller 212 Signal interference due to use of multiple core cable 144 Simplified Remote Controller BRC2A...

Page 239: ...iping 43 Drainage flow 45 Drain up piping work 45 Electric wiring work 46 Indoor drain piping 43 multiple drain pipes 43 Rig drain piping 43 Terminal box lid 44 Ceiling Mounted Duct Type FXMQ M 49 Cei...

Page 240: ...or Unit Bolt pitch 59 Operational steps 59 Unpacking and Placing the Unit 60 interconnecting wiring 190 K knocking out knock holes 189 L laying power wiring 185 Leak test 175 Leak tester 228 M Mismatc...

Page 241: ...Step Installation Procedure 14 Striking a Balance between System Installation and General Construction Work 10 Supplementation on and 91 System example 183 T Test Run 192 The analysis of major install...

Page 242: ...0 8323 Japan Tokyo office Shinjuku Sumitomo Bldg 6 1 Nishi Shinjuku 2 chome Shinjuku ku Tokyo 163 0235 Japan Zandvoordestraat 300 B 8400 Oostende Belgium For further improvement specifications or desi...

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