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INSTALLATION MANUAL

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1. 2 14 13 15 16 4PW28163 1
2. i ul cr T m aq i Er d m 2 2 1 To indoor unit 2 Piping betvveen outdoor units MH To avoid the risk of oil retention to the outmost outdoor unit alvvays connect the stop valve and the piping betvveen outdoor units as shovvn in the 4 correct possibilities of the figure below x 1 2 2 1 To indoor unit 2 Oil collects to the outmost outdoor unit Change to configuration as in figures below x x ll 1 2 1 To indoor unit 2 Oil collects to the outmost outdoor unit when the system stops Correct configuration gt 200 mm 1 To indoor unit R 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 Ifs2m m I E lt 2 m 2 1 To indoor unit 2 Piping between outdoor units lf gt 2m 2200 mm ld hs m 22 m 1 To i
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4. 5 azis did pun 215 UONOSUUOO ey se SWS y aq jsnu PUN 0 UONOSULOD 40 215 h n Joopul pue yy y9ue q jues9611194 usamjaq Buidid 3 Installation manual 7 LEAK TEST AND VACUUM DRYING The units were checked for leaks by the manufacturer After connecting the field piping perform the following inspections 1 Preparations Referring to figure 27 connect an oxygen tank a cooling tank and a vacuum pump to the outdoor unit and perform the airtightness test and the vacuum drying The stop valve and valves A and B in figure 27 should be open and closed as shown in the table below when performing the airtightness test and vacuum drying 1 Pressure reducing valve 2 Nitrogen 3 Measuring instrument 4 Tank siphon system 5 Vacuum pump 6 Charge hose 7 Service port for adding refrigerant 8 Gas line stop valve 9 Liquid line stop valve 10 Outdoor unit 11 To indoor unit 12 Stop valve service port 13 Dotted lines represent on site piping 14 Valve B 15 Valve C 16 Valve A Liquid Gas State side side of the valves A and B Valve Valve Valve stop stop and the stop valve A B C valve valve Performing the airtightness test and vacuum drying Valve A must always be Close Open Open Close Close shut Otherwise the refrigerant in the unit will pour out 2 Airtightness test and vacuum drying NOTE Make sure to perform ai
5. Since design pressure is 4 0 MPa or 40 bar for R407C units 3 3 MPa or 33 bar pipes of larger wall thickness may be required The wall thickness of piping must be carefully selected refer to paragraph 6 2 Selection of piping material on page 5 for more details 1 NTRODUCTION This installation manual concerns Urban Multi units of the Panasonic U MX4XPQ series These units are designed for outdoor installation and used for cooling and heat pump applications The U MX4XPQ series can be combined from 7 main units and has nominal cooling capacities ranging from 14 0 to 147kW and nominal heating capacities ranging from 16 0 to 170 kW The U MX4XPQ units can be combined with Panasonic Urban Multi indoor units for air conditioning purposes and suitable for R410A The present installation manual describes the procedures for unpacking installing and connecting the U MX4XPQ units Installation of the indoor units is not described in this manual Always refer to the installation manual supplied with these units for their installation 1 1 Combination The indoor units can be installed in the following range MN Always use appropriate indoor units compatible with R410A To learn which models of indoor units are compatible with R410A refer to the product catalogs M Pay attention when connecting outdoor units in multi combination U MX3XPQ A units are NOT compatible with U MX4XPQ units Installation manual
6. Panasonic INSTALLATION MANUAL URBAN MULTI AIR CONDITIONER Installation manual Urban Multi air conditioner Installationsanleitung Urban Multi Klimaanlage Manuel d installation Climatiseur Urban Multi Montagehandleiding Urban Multi airconditioner Manual de instalaci n Acondicionador de aire Urban Multi Manuale d installazione U 5MX4XPQ Climatizzatore Urban Multi U 8MX4XPQ U 10MX4XPQ Evyxelp dio EYKATAOTAONG U 12MX4XPQ KMpatiotik Urban Multi U 14MX4XPQ Manual de instalac o Ar condicionado Urban Multi U 18MX4XPQ English Deutsch Francais Nederlands Espa ol Italiano EAAnvika Portugues bI A bi 5 L N di di a gt 10 mm a250 mm a 2200 mm b 2300 mm b 2100 mm b 2300 mm c210 mm c 250 mm d 2500 mm d 2500 mm a210 mm a 250 mm a 2200 mm b 2300 mm b 2100 mm b 2300 mm c 210 mm c 250 mm d 2500 mm d 2500 mm e 220 mm e 2100 mm e 2400 mm 3 a210 mm a250 mm b 2300 mm b 2100 mm c210 mm c 250 mm d 2500 mm d 2500 mm h H e220 mm e 2100 mm 211 f 2600 mm f 2500 mm O a 210 mm a 250 mm b 2300 mm b 2100 mm 210 mm 250 mm LO hy d 2300 mm d 2100 mm v hy gt 0 gt b2b 3 e 220 mm e 2100 mm h f 2500 mm f 2500 mm ha gt 0 d d 2 765
7. 2 Open valve C valves A and B and the stop valves must be left closed and charge the required amount of refrigerant through the liquid side stop valve service port Pressure control q for the first minute 2 r 0 m When the required amount of refrigerant is fully charged Start trol close valve C Record the amount of refrigerant that was ne T T i 6 6 D 0 added on the additional refrigerant charge label provided a with the unit and attach it on the back side of the front panel heal 7 1 53 Perform the test procedure as described in In case for the next 15 refrigerant was added without using the leak detection minutes according to function pre charging charging in heating mode on the system page 26 7 Ready m When the additional charging is not complete perform the HIP H2P Hap H4P HSP 7 procedure explained in the chapter Charge with operating outdoor unit on page 20 FF 2 0 m Charge with operating outdoor unit Press the BS4 TEST button once within 5 minutes Charge the refrigerant through valve A Ifthe BS4 TEST button is not pushed within 5 minutes PE will be 1 Start of charging refrigerant manually displayed on the remote controller Refer to 4 Remote controller Open the liquid and gas side stop valves and the service port malfunction code display on page 21 stop valve Valves A B and C must be closed 8 Operation Close all frontpanels except the electric box frontpanel
8. Reactor Motor compressor Motor fan Switching power supply A1P A3P Earth leakage breaker field supply Phase reversal detection circuit Thermistor fin A2P Thermistor air A1P Thermistor Suction Thermistor coil deicer Thermistor coil outlet Thermistor liquid pipe receiver Thermistor accumulator Resistor current sensor A4P A8P Thermistor discharge M1C M3C Resistor Resistor current limiting Pressure sensor high Pressure sensor low Pressure switch high Current sensor A6P A7P Safety devices input Power module A4P A8P Power module A3P Connector M1F M2F Terminal strip power supply Terminal strip control A1P Terminal strip A5P Expansion valve electronic type main subcool YEL sasani Solenoid valve hotgas bypass V2S ALaRAsA Solenoid valve oil return MBS TT Solenoid valve 4 way valve 7Al64v Noise filter ferrite core Ea T Noise filter with surge absorber S EA E Live 0 Neutral Field wiring sarra Terminal strip idas Connector 55 Terminal 1 This vviring diagram only applies to the outdoor unit 4 When using the option adaptor refer to the installation manual 5 Refer to the installation manual for connection wiring to indoor outdoor transmission F1 F2 outdoor multi transmission Q1 Q2 and on how to use BS1 BS5 and DS1 DS2 switch 6 Do not operate the unit by
9. U 5 18MX4XPQ Urban Multi air conditioner 4PW28163 1 R Total capacity quantity of indoor units 1 2 Standard supplied accessories Total See location 1 in figure 24 for reference to where following aL accessories are supplied with the unit indoor units quantity of DD Standard combination of outdoor units kW indoor units F Installation manual 1 U 5MX4 a 62 5 250 12 Operation manual 1 U 8MX4 a 100 400 20 Additional refrigerant charge label 1 U 10MX4 a 125 500 25 See location 2 in figure 24 for reference to where following U 12MX4 a 150 600 30 accessories are supplied vvith the unit U 14MX4 a 175 700 35 Gas side accessory pipe U 16MX4 a 200 800 40 Unit type Item Quantity U 18MX4 a 225 900 45 5 18 Hp ETA 1 U 20MX4 U 8MX4 U 12MX4 250 800 40 5 10 Hp i 1 U 22MX4 U 1OMX4 U 12MX4 275 880 44 12 18 Hp 1 24 4 U 12MX4 U 12MX4 300 960 48 Liquid side accessory pipe U 26MX4 U 8MX4 U 18MX4 325 1040 52 Unit type Item Quantity U 28MX4 U 10MX4 U 18MX4 350 1120 56 5 18 Hp Y 1 U 30MX4 U 12MX4 U 18MX4 375 1200 60 5 10 14 16 Hp 1 U 32MX4 U 14MX4 U 18MX4 400 1280 64 12 18 Hp 1 U 34MX4 U 16MX4 U 18MX4 425 1360 64 U 36MX4 U 18MX4 U 18MX4 450 1440 64 1 3 Optional accessories U 38MX4
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11. Be sure to turn the power on at least 6 hours before operation inorder to have power running to the crank case heater 2 Make sure that transmission is normal by checking the LED display on the outdoor unit circuit board A1P If transmission is normal each LED will be displayed as shown below LED Cooling Heating display Micro changeover Default computer status operation Ready Low noise Demand Multi H3P H4P H5P H6P H7P H8P Single outdoor unit system T L k ii hal ind st ele ele x before monitor Mode Error delivery Multiple Slave outdoor unit JE O gt o oe o eo Jh unit 188 system Slave uit k0 ojoj e oj 208 D The state of the H8P multi LED in a multi system shows wich unit is the master unit x slave 1 unit x or slave 2 unit e Only the master unit is connected to the indoor units with interunit wiring Setting the mode The set mode can be changed with the BS1 MODE button according to the following procedure Mm For setting mode 1 Press the BS1 MODE button once the H1P led is off m For setting mode 2 Press the BS1 MODE button for 5 seconds the H1P led is on Xt If the H1P led is blinking 3 and the BS1 MODE button is pushed once the setting mode vvill change to setting mode 1 NOTE f you get confused in the middle of the setting process push the BS1 MODE butto
12. See 9 Pipe insulation on page 15 Make sure there is no faulty refrigerant piping See 6 Refrigerant piping on page 4 The electrical work 1 Make sure there is no faulty power wiring or loose nuts See 8 Field wiring on page 10 Make sure there is no faulty transmission wiring or loose nuts See 8 Field wiring on page 10 Make sure the insulation resistance of the main power circuit is not deteriorated Using a megatester for 500V check that the insulation resistance of 2 MQ or more is attained by applying a voltage of 500 V DC between the power terminals and earth Never use the megatester for the transmission wiring between outdoor and indoor unit outdoor and COOL HEAT selector etc Installation manual 15 U 5 18MX4XPQ Urban Multi air conditioner 4PW28163 1 11 CHARGING REFRIGERANT The outdoor unit is factory charged but depending on the length of the piping when installed the outdoor unit may require additional charging For charging the additional refrigerant follow the procedure as described in this chapter A Refrigerant cannot be charged until all field wiring and field piping has been completed Refrigerant may only be charged after performing the leak test and the vacuum drying A The refrigerant charge of the system must be less than 100 kg This means that in case the calculated refrigerant charge is equal to or more than 95 kg you must divide your multiple outdoor system
13. U 18MX4 U 12MX4 U 12MX4 475 1235 61 To install the above outdoor units the following optional parts are U 40MX4 U 10MX4 U 12MX4 U 12MX4 500 1300 64 also required 2077750100 11 525 1365 m Refrigerant branching kit for R410A only Always use an U 44MX4 U 8MX4 U 18MX4 U 18MX4 550 1430 64 appropriate kit dedicated for your system U 46MX4 U 10MX4 U 18MX4 U 18MX4 575 1495 64 U 48MX4 U 12MX4 U 18MX4 U 18MX4 600 1560 64 CZ P29HK12Q CZ P20BK12Q U 50MX4 U 14MX4 U 18MX4 U 18MX4 625 1625 64 CZ P64HK12Q CZ P29BK12Q U 52MX4 U 16MX4 U 18MX4 U 18MX4 650 1690 64 CZ P75HK12Q CZ P64BK12Q U 54MX4 U 18MX4 U 18MX4 U 18MX4 675 1755 64 CZ P75BK12Q a main unit NOTE R The table above shows the possible total capacity C cia and number of possible indoor units when configured in a standard combination Refer to the service manual for more details when using a configuration other than a standard combination R t the total capacity of the connected indoor units exceeds the capacity of the outdoor unit cooling and heating performance may drop when running the indoor units Refer to the section on performance charac teristics in the Engineering Data Book for details m There are restrictions on the refrigerant pipe connection order between outdoor units during installation in case of a multiple outdoor unit system Install according to the following restrictions The capacities of out
14. Where there is an opening without a door or where there are openings above and below the door which are each equivalent in size to 0 15 or more of the floor area 3 Calculating the refrigerant density using the results of the calculations in steps 1 and 2 above total volume of refrigerant in the refrigerant system l size m3 of smallest room in which there is an indoor unit installed maximum concentration level kg m If the result of the above calculation exceeds the maximum concentration level then make similar calculations for the second then third smallest room and so until the result falls short of the maximum concentration 4 Dealing with the situations where the result exceeds the maximum concentration level Where the installation of a facility results in a concentration in excess of the maximum concentration level then it will be necessary to revise the system Please consult your supplier 15 DISPOSAL REQUIREMENTS Dismantling of the unit treatment of the refrigerant of oil and of other parts must be done in accordance with relevant local and national legislation U 5 18MX4XPQ Urban Multi air conditioner 4PW28163 1 Installation manual 26 27 28 29 F me s 9 es
15. w EX Z o Press the BS4 TEST button once within 5 minutes If the BS4 TEST button is not pushed within 5 minutes Pe will be displayed on the remote controller Refer to 4 Remote controller malfunction code display on page 21 Operation When the following led display is shown open valve A and close the frontpanel If the frontpanel is left open the system can not operate properly during the refrigerant charging H1P H2P H3P H4P H5P H6P H7P ok of x x The state of this led is not important T When a malfunction occurs check the display of the remote controller and refer to Remote controller malfunction code display on page 21 10 Complete If the display on the remote controller shows a flashing PE code charging is almost finished When the unit stops operating close valve A immediately and check the leds and check if the P3 code is displayed on the remote controller HiP H2P H3P H4P H5P H6P H7P oe eR 32 Oo x If it is not as shown above correct the malfunction as indicated in the display of the remote controller and restart the complete charging procedure When the charging amount is little the PE code may not be displayed but instead the P3 code will be displayed immediately Press the BS1 MODE button once and the charging is complete Record the amount that was added on the additional refrigerant charge label provided with the unit and attach it on the back side o
16. 11 Power supply 400 V 3 N 50 Hz Fuse Earth leakage breaker Grounding wire Power supply terminal block Connect each power wire RED to L1 WHT to L2 BLK to L3 and BLU to N Ground wire GRN YLW Clamp the power wire to the plastic bracket using a field supplied clamp to prevent external force being applied to the terminal Clamp field supply Cup washer When connecting the earth wire it is recommended to perform curling m 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 m When connecting or disconnecting a power supply cord make sure that the current carrying conductors become taut before the earthing conductor U 5 18MX4XPQ Urban Multi air conditioner 4PW28163 1 Installation manual Precautions when laying power wiring m Do not connect wiring of different thicknesses to the power terminal block Slack in the power wiring may cause abnormal heat R When connecting wiring which is the same thickness do as shown in the figure below ys R oon x x m For wiring use the designated power wire and connect firmly then secure to prevent outside pressure being exerted on the terminal board m Use an appropriate screwdriver for tightening the terminal screws A screwdriver with a small head will strip the head and make proper tightening impossible m Over tightening
17. 2 Monitor mode H1P H2P H3P H4P y H6P H7P Default status display Tie o l To check the number of indoor units press the BS2 SET button 5 times To check the number of outdoor units press the BS2 SET button 8 times Monitor mode H1P H2P H3P H4P H5P H6P H7P Selection status of hovv many connected indoor units to 3 l 35 x display OR HP H2P H3P H4P H5P H6P H7P Selection status of how many connected outdoor units to Kile o o display Pressing the BS3 RETURN button causes the LED display to show the data on the number of indoor units that are connected or how many outdoor units that are connected in a multiple outdoor unit system H1P H2P H3P H4P H5P H6P H7P i Xx 0 kk e 32 16 8 4 2 1 Calculate the number of connected indoor units by adding the values of all H2P H7P blinking 3 leds together In this example 16 4 2 22 units Monitor mode Displaying the number of connected indoor units Press the BS1 MODE button to return to step 1 setting mode 1 H1P O OFF 11 4 Additional refrigerant charge There are two ways to charge refrigerant Use the selected method following the described procedure below m Adding refrigerant using leak detection function Refer to 1 Adding refrigerant using leak detection function on page 17 Adding refrigerant without using leak detection function Refer to 2 Adding refrigerant without using leak detection
18. 20 54MX4 R Front connection Remove the stop valve cover to connect See figure 8 Mm Bottom connection Remove the knock holes on the bottom frame and route the piping under the bottom frame See figure 8 4 1 Precautions when connecting piping between outdoor units multiple outdoor unit system R The 5 HP unit type cannot be used as an independent unit in a multi system R To connect the piping between outdoor units an optional multi connection piping kit CZ 32 48PJ4PQ is always required When installing the piping follow the instructions in the installation manual that comes with the kit m Only proceed with piping work after considering the limitations on installing listed here and in the chapter 6 4 Connecting the refrigerant piping on page 5 always referring to the installation manual delivered with the kit 4 2 Possible installation patterns and configurations MH The piping between the outdoor units must be routed level or slightly upward to avoid the risk of oil detention into the piping side Pattern 1 1 seer eb El ls H 1 1 To indoor unit Pattern 2 1 1 To indoor unit U 5 18MX4XPQ Urban Multi air conditioner 4PW28163 1 Installation manual Prohibited patterns change to pattern 1 or 2
19. Pinch the pipe 7 Less than a month Pinch or tape the pipe T Regardless of the period Great caution is needed when passing copper tubes through walls Block all gaps in the holes for passing out piping and wiring using sealing material field supply The capacity of the unit will drop and small animals may enter the machine Example passing piping out through the front 1 Plug the areas marked with When the piping is routed from the front panel Gas side piping Liquid side piping After all the piping has been connected make sure there 15 no gas leak Use nitrogen to perform a gas leak check Installation manual U 5 18MX4XPQ Urban Multi air conditioner 4PW28163 1 Example of connection 6 6 8 9 G y E Z Silun Joopul did y9ue q Japeay jo aseo ul ajdwex3 syun soopul did Odvfd8r Z9 4 426 70 suun soopino jo Jaquinn Silun JOOP NO s qulnu ay YM ul aul W014 aaow 10 81 si ad M yoedeo yun aoopino ay J p p u it Burdid u n uuo nu ioopino Ue soov 0 MOH ed uo Z ajou ses e youe1q 8 xeyy 2 9 4 20 e YouRsg 8 XEN OZ MHP9d ZO youe1q 9 xeyy OZLMHP9d ZO aweu yy Y9Ue q 9 OY9 gt X gt 062 062 MA ad y soopul did y9uelq Japeay a
20. Stop valve service port Valve B Valve C Valve A o JO 0 MM 1 Start of automatic charging refrigerant Open the liquid and gas side stop valves and the service port stop valve Valves A B and C must be closed Close all frontpanels except the electric box frontpanel and turn the power ON Make sure all indoor units are connected refer to 11 3 How to check how many units are connected on page 16 f the H2P led is not flashing in 12 minutes time after turning on the power make sure it is displayed as shown in the Normal system display on page 21 If the H2P led is flashing check the malfunction code on the remote controller 4 Remote controller malfunction code display on page 21 2 Press the BS1 MODE button once if the LEDs combination is not as in the figure below HiP H2P H3P H4P H5P H6P H7P e 0 3 Press the BS4 TEST button once Mo D M 04314 Hold the BS4 TEST button down for 5 seconds or more 5 Charging mode judgement For automatic charging the charging must be done in cooling mode However if the indoor temperature is 20 C DB or lower in some cases the unit will first charge in heating mode to increase the indoor temperature The unit will automatically select the cooling mode or heating mode for charging A During charging in heating mode a person must manually close valve A before complete charging is finished The required a
21. adapter G enabling function of the low noise operation level setting L N O P and or power consumption limitation setting DEMAND via the external control adapter DTA104A61 62 H check operation without initial refrigerant decision HiP H2P H3P H4P H5P H6P H7P Xe Oe IL L L 0 Xxxoe jo o o mon I 55 L X Q QQ 0 0 GOO GO H 2 When the BS3 RETURN button is pushed the current setting is defined 3 Push the BS2 SET button according to the required setting possibility as shown below in the field marked 3 1 Possible settings for function A B C G and H are ON ON or OFF OFF HiP H2P H3P H4P H5P H6P H7P ON OFF it o a This setting factory setting 3 2 Possible settings for function D The noise of level 3 lt level 2 lt level 1 1 H1P H2P H3P H4P H5P H6P H7P OFF y o 1 a2 LX e a3 15 o a This setting factory setting 3 3 Possible settings for function E and F For function E L N O P only the noise of level 3 lt level 2 lt level 1 a 1 For function F DEMAND only the power consumption of level 1 lt level 2 lt level 3 a 3 a t 3 20 a3 t a This setting factory setting U 5 18MX4XPQ Urban Multi air condition
22. board noncoated metal part to eliminate static electricity before pulling out or plugging in connectors 3 To prevent damaging 4 The performing of the service to the inverter be started after the junction connectors X1A X2A X3A X4A X3A and X4A are for 14 18 unit type only for the fan motors in the outdoor unit are been pulled out Be carefull not to touch the equipment must live parts If a fan rotates due to strong wind it may store electricity in the capacitor or in the main circuit and cause electric shock 5 After the service is finished plug the junction connecter back in Otherwise the error code 7 will be displayed on the remote controller and normal operation will not be performed For details refer to the wiring diagram labeled on the back of the electric box cover inverter touch a Pay attention to the fan It is dangerous to inspect the unit while the fan is running Be sure to turn off the main switch and to remove the fuses from the control circuit located in the outdoor unit NOTE Play it safe q body before performing service For protection of the PCB touch the switch box casing by hand in order to eliminate static electricity from your U 5 18MX4XPQ Urban Multi air conditioner 4PW28163 1 Installation manual 12 2 Checks before initial start up NOTE Remark that during the first running period of the unit E required power input may be higher than stated
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24. high speed type 300 mA rated residual operating current Be sure to install a main switch for the complete system NOTE Select the power supply cable in accordance with relevant local and national regulations Wire size must comply with the applicable local and national code Specifications for local wiring power cord and branch wiring are in compliance with IEC60245 WIRE TYPE HO5VV Only in protected pipes use HO7RN F when protected pipes are not used 8 4 General cautions A Up to 3 units can be connected by crossover power source wiring between outdoor units However units of smaller capacity must be connected downstream For details refer to the technical data When connecting several units in Urban Multi combination the power supply of each outdoor unit can also be connected separately Refer to the field wiring on the engineering data book for further details Make sure to connect the power source wire to the power source terminal block and to clamp it as shown in figure 21 and described in chapter 8 8 Field line connection power wiring on page 14 As this unit is equipped with an inverter installing a phase advancing capacitor not only will deteriorate power factor improvement effect but also may cause capacitor abnormal heating accident due to high frequency waves Therefore never install a phase advancing capacitor Keep power imbalance within 2 of the supply rating Large imba
25. into smaller independent systems each containing less than 95 kg refrigerant charge For factory charge refer to the unit name plate 11 1 Precautions when adding R410A Be sure to charge the specified amount of refrigerant in liquid state to the liquid pipe Since this refrigerant is a mixed refrigerant adding it in gas form may cause the refrigerant composition to change preventing normal operation R Before charging check whether the refrigerant cylinder is equipped with a siphon tube or not Charge the liquid refrigerant with the cylinder in up side down position Charge the liquid refrigerant with the cylinder in upright position R Be sure to use tools exclusively for R410A to ensure required pressure resistance and to prevent foreign materials from mixing into the system A Charging with an unsuitable substance may cause explosions and accidents so always make sure that the appropriate refrigerant R410A is charged Refrigerant containers must be opened slowly 11 2 Stop valve operation procedure m Do not open the stop valve until all piping and electrical steps of 10 Checking of unit and installation conditions on page 15 are completed If the stop valve is left open without turning on the power it may cause refrigerant to build up in the compressor leading to insulation degradation m Always use a charge hose for service port connection R After tightening the cap check that no refr
26. is completed 6 Start up o o Record the amount that was added on the additional refrigerant Wait while the unit is preparing for charging in cooling mode charge label provided with the unit and attach it on the back side p the test procedure as described in In case refrigerant ior tha fret min te T e was added by using the leak detection function on page 25 Start up control for the next 2 minutes a r izi is e Waiting for stable y x heating conditions for the next 15 minutes according to the system 7 Ready HiP H2P H3P H4P H5P H6P H7P XXX x o w Press the BS4 TEST button once within 5 minutes If the BS4 TEST button is not pushed within 5 minutes Pe will be displayed on the remote controller Refer to 4 Remote controller malfunction code display on page 21 Installation manual 19 U 5 18MX4XPQ Urban Multi air conditioner 4PW28163 1 Continue with the manually charging in cooling Urban Multi air conditioner 4PW28163 1 2 Adding refrigerant without using leak detection function mode OR in heating mode R Charge with the outdoor unit at standstill 1 Calculate how much refrigerant to be added using the formula m Charging in heating mode explained in the chapter How to calculate the additional 6 Startup refrigerant to be charged on page 9 Wait while the unit is preparing for charging in heating mode
27. main pipes both gas side and liquid side must be increased Depending on the length of the piping the capacity may drop but even in such a case it is possible to increase the size of the main pipes Refer to page 9 If the recommended pipe size is not available stick to the original pipe diameter which may result in a small capacity decrease 6 3 Pipe connection Be sure to perform a nitrogen blow when brazing and to read the paragraph Caution to be taken when brazing refrigerant piping on page 4 first NOTE The pressure regulator for the nitrogen released when HZ doing the brazing should be set to 0 02 MPa or less See figure 10 Refrigerant piping Location to be brazed Nitrogen Taping Manual valve Regulator Oo oO fF WD Nitrogen A Do not use anti oxidants when brazing the pipe joints Residue can clog pipes and break equipment 6 4 Connecting the refrigerant piping 1 Front connection or side connection Installation of refrigerant piping is possible as front connection or side connection when taken out from the bottom as shown in the figure 1 Left side connection Front connection Right side connection NOTE Precautions when knocking out knock holes NE an MH After knocking out the holes we recommend you remove the burrs and paint the edges and areas around the edges using the repair paint to prevent rusting Be sure to avoid damaging the casing m When passi
28. method At the first installation this vacuuming is not required It is required only for repair purposes 1 When the unit is at standstill and under the setting mode 2 set the required function B refrigerant recovery operation vacuuming operation to ON ON Aher this is set do not reset the setting mode 2 until the vacuuming is finished The H1P led is on and the remote controller indicates TEST test operation and C external control and the operation will be prohibited 2 Evacuate the system with a vacuum pump 3 Press the BS1 MODE button and reset the setting mode 2 Refrigerant recovery operation method by a refrigerant reclaimer 1 When the unit is at standstill and under the setting mode 2 set the required function B refrigerant recovery operation vacuuming operation to ON ON The indoor unit and the outdoor unit expansion valves will fully open and some solenoid valves will be turned on The H1P led is on and the remote controller indicates TEST test operation and A external control and the operation will be prohibited 2 Cut off the power supply to the indoor units and the outdoor unit with the circuit breaker After the power supply to one side is cut off cut off the power supply to the other side within 10 minutes Otherwise the communication between the indoor and outdoor unit may become abnormal and the expansion valves will be completely closed again 3 Recover the refrigerant by a r
29. page 17 UF The phases of the ul Exchange two of the three phases power to the outdoor L1 L2 L3 to make a positive units are reversed phase connection No power is supplied ui Check if the power wiring for the to an outdoor or Uu outdoor units are connected indoor unit including correctly phase interruption If the power wire is not connected to L2 phase no malfunction display will appear and the compressor will not work Incorrect UF Check if the refrigerant line piping interconnections and the unit wiring are consistent between units with each other Refrigerant E3 Recalculate the required amount of overcharge F6 refrigerant from the piping length UF and correct the refrigerant charge level by recovering any excessive refrigerant with a refrigerant recovery machine For the U 5 18MX4 Ul Remove the vviring from the Q1 Q2 the vviring is UF Out Multi connected to the Q1 Q2 Out Multi Insufficient refrigerant EH Check if the additional refrigerant F3 charge has been finished correctly Recalculate the required amount of refrigerant from the piping length and add an adequate amount of refrigerant MH After correcting the abnormality press the BS3 RETURN button and reset the malfunction code m Carry out the test operation again and confirm that the abnormality is properly corrected U 5 18MX4XPQ Urban Multi air conditioner 4PW28163 1 Installation manual 13 SERVICE MODE OPERATION Vacuuming
30. prevent it from coming into contact with the casing One outdoor unit installed In case of U 5 18MX4 See figure 8 Front connection Remove the stop valve cover to connect Bottom connection Remove the knock holes on the bottom frame and route the piping under the bottom frame A Front connection Remove the stop valve cover to connect B Bottom connection Remove the knock holes on the bottom frame and route the piping under the bottom frame 1 Gas side stop valve 2 Liquid side stop valve 3 Service port for adding refrigerant 4 Gas side accessory pipe 1 5 Gas side accessory pipe 2 6 Liquid side accessory pipe 1 7 Liquid side accessory pipe 2 8 Brazing 9 Gas side piping field supply 10 Liquid side piping field supply 11 Punch the knockout holes use a hammer R Processing the gas side accessory pipe 2 Only in case of connecting at lateral side cut the gas side accessory pipe 2 as shown in figure 11 1 Gas side accessory pipe 2 Cutting location 3 Gas side piping field supply 4 Base Unit type 5 HP mm 166 16 199 246 8 HP mm 156 17 188 247 10 HP mm 156 23 192 247 12 HP mm 150 29 192 247 14 18 HP mm 150 29 192 251 NOTE m When connecting the piping on site be sure to Ll use the accessory piping m Make sure the onsite piping does not come into contact with other piping the bottom frame or side panels of the unit 4 Outdoor units installed in a multiple outdoor unit system U
31. short circuiting protection device S1PH 8 2 Optional parts cool heat selector l Selector svvitch fan cool heat S2S 0000000 Selector svvitch cool heat NOTE m Use copper conductors only LA R For connection wiring to the central remote controller refer to the installation manual of the central remote controller R Use insulated wire for the power cord Installation manual U 5 18MX4XPQ Urban Multi air conditioner 4PW28163 1 8 3 Power circuit and cable requirements A power circuit see table below must be provided for connection of the unit This circuit must be protected with the required safety devices e a main switch a slow blow fuse on each phase and an earth leakage breaker Minimum Phase and circuit Recommended Transmission line frequency Voltage ampere fuses section U 5MX4 3N 50Hz 400V 119A 16A 0 75 1 25 mm U 8MX4 3N 50Hz 400V 185A 32A 0 75 1 25 mm U 10MX4 3N 50Hz 400V 216A 32A 0 75 1 25 mm U 12MX4 3N 50Hz 400V 227 32A 0 75 1 25 mm U 14MX4 3N 50Hz 400V 315A 50A 0 75 1 25 mm U 16MX4 3N 50Hz 400V 315A 50A 0 75 1 25 mm U 18MX4 3N 50Hz 400V 325A 50A 0 75 1 25 mm U 20MX4 3N 50Hz 400V 412A 63A 0 75 1 25 mm U 22MX4 3N 50Hz 400V 443A 63A 0 75 1 25 mm U 24MX4 3N 50Hz 400V 504A 63 A 0 75 1 25 mm U 26MX4 3N 50Hz 400V 510A 63A 0 75 1 25 mm U 28MX4 3N 50Hz 400V 541A 63 A 0 75 1 25 mm U 30MX4 3N 50Hz 400V 552A 80 A 0 75 1 25 mm U 32MX4 3N 50Hz 400V 630A 80 A 0 75 1 25
32. 10 m or less 2 Use the following material specification for refrigerant piping M Size determine the proper size referring to chapter 6 6 Example of connection on page 8 m Construction material phosphoric acid deoxidized seamless copper for refrigerant m Temper grade use piping with temper grade in function of the pipe diameter as listed in the table below Pipe Y Temper grade of piping material lt 15 9 O 219 1 1 2H O Annealed 1 2H Half hard R The pipe thickness of the refrigerant piping should comply with relevant local and national regulations The minimal pipe thickness for R410A piping must be in accordance with the table below Minimal thickness Minimal thickness Pipe t mm Pipe t mm 6 4 0 80 22 2 0 80 9 5 0 80 28 6 0 99 12 7 0 80 34 9 1 21 15 9 0 99 41 3 1 43 19 1 0 80 3 Make sure to use the particular branches of piping that have been selected referring to chapter 6 6 Example of connection on page 8 4 In case the required pipe sizes inch sizes are not available it is also allowed to use other diameters mm sizes taken the following into account R select the pipe size nearest to the required size R use the suitable adapters for the change over from inch to mm pipes field supply 5 Precautions when selecting branch piping When the equivalent pipe length between outdoor and indoor units is 90 m or more the size of the
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34. 28163 1 8 Operation 8 Operation When the following led display is shown open valve A and close When the following led display is shown open valve A and close the frontpanel If the frontpanel is left open the system can not the frontpanel If the frontpanel is left open the system can not operate properly during the refrigerant charging operate properly during the refrigerant charging 1 H2P H3P H4P H5P H6P H7P 1 H2P H3P HAP H5P Hep H7P 32 3 32 3 The state of this led is not important The state of this led is not important When a malfunction occurs check the display of the When a malfunction occurs check the display of the remote controller and refer to Remote controller remote controller and refer to Remote controller malfunction code display on page 21 malfunction code display on page 21 9 Complete 9 Complete If the calculated amount of refrigerant minus 10 kg is reached If the display on the remote controller shows a flashing PE code close valve A and press the BS3 RETURN button once charging is almost finished When the unit stops operating close valve A immediately and H HE MSP Hp Hee H b Mae check the leds and check if the P3 code is displayed on the P GK Q YA remote controller When the charging amount is little the PE code may not be displayed but instead the P3 code will be As long as the BS3 RETURN button is not pres
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36. 6P H7P 12 4 Test operation A Do not insert fingers rods or other objects into the air inlet or outlet When the fan is rotating at high speed it will cause injury A Do not perform the test operation while working on the indoor units When performing the test operation not only the outdoor unit but the connected indoor unit will operate as well Working on a indoor unit while performing a test operation is dangerous In case refrigerant was added by using the leak detection function R Inthe check operation the following checks and judgements will be performed MH Check of the stop valve opening m Check for wrong wiring MH Judgement of piping length MH Judgement of initial refrigerant state R L takes 3 hours if the outdoor temperature is low it takes 4 hours to complete the check operation MH The system can not perform the judgement of initial refrigerant state in the following cases MH The outdoor temperature is out of range lt 0 C DB or gt 43 C DB The indoor temperature is out of range lt 20 C DB or gt 32 C DB R A forced OFF during the test operation In this case after performing the check operation normal operation is possible although the abnormality code U3 is displayed on the indoor remote controller and the refrigerant leakage detection function can not be used Perform the check operation again and complete the judgement of initial refriger
37. Multi air conditioner Installation manual CONTENTS Paga 1 o o E G bM 10 11 12 13 14 15 MrodUchO OTT 1 1 1 Combination nd 1 2 Standard supplied accessories z 1 3 Optional accessories 22 1 4 Technical and Electrical specifications 22 Main 5 sees sees sees ee sees ereer nene 2 Selection of location eee eee 3 Inspecting and handling the 2 4 Unpacking and placing the unit 4 Refrigerant piping lH 4 6 1 Installation tools 6 2 Selection of piping material 6 3 Pipe connection 6 4 Connecting the refrigerant pipi 6 5 Protection against contamination when installing pipes 6 6 Example of connection Leak test and VACUUM 10 Field wiring 10 8 1 Internal wiring Parts table sse eee 11 8 2 Optional parts cool heat selector eee 11 8 3 Power circuit and cable 5 12 A eii siipiin 12 8 5 System 85 13 8 6 Leading power line and transmission line 13 8 7 Field line connection transmission wiring and cool heat 8 8 Field li
38. SORIES MADE BY PANASONIC WHICH ARE SPECIFICALLY DESIGNED FOR USE WITH THE EQUIPMENT AND HAVE THEM INSTALLED BY A PROFESSIONAL PANASONIC EQUIPMENT 15 DESIGNED FOR COMFORT APPLICATIONS FOR USE IN OTHER APPLICATIONS PLEASE CONTACT YOUR LOCAL PANASONIC DEALER IF UNSURE OF INSTALLATION PROCEDURES OR USE ALWAYS CONTACT YOUR DEALER FOR ADVICE AND INFORMATION THIS AIR CONDITIONER COMES UNDER THE TERM APPLIANCES NOT ACCESSIBLE TO THE GENERAL PUBLIC The refrigerant charge of the system must be less than 100 kg This means that in case the calculated refrigerant charge is equal to or more than 95 kg you must divide your multiple outdoor system into smaller independent systems each containing less than 95 kg refrigerant charge For factory charge refer to the unit name plate The refrigerant R410A requires strict cautions for keeping the system clean dry and tight m Clean and dry Foreign materials including mineral oils such as SUNISO oil or moisture should be prevented from getting mixed into the system m Tight R410A 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 effect if it is released Therefore we should take special attention to check the tightness of the installation Read 6 Refrigerant piping on page 4 carefully and follow these procedures correctly
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40. and When the following led display is shown open valve A and close turn the power ON the frontpanel If the frontpanel is left open the system can not Make sure all indoor units are connected refer to 11 3 How operate properly during the refrigerant charging to check how many units are connected on page 16 Ifthe H2P led is not flashing in 12 minutes time after turning SS HAB HZ on the power make sure it is displayed as shown below Fen kx k kx f the H2P led is flashing check the malfunction code on the L The state of this led is not important remote controller 4 Remote controller malfunction code display on page 21 When a malfunction occurs check the display of the 2 Press the BS1 MODE button once if the LEDs combination is not remote controller and refer to Remote controller as in the figure below malfunction code display on page 21 HiP H2P H3P H4P HSP H6P H7P 9 Complete gt 0 f the calculated amount of refrigerant minus 10 kg is reached close valve A and press the BS3 RETURN button once 3 Press the BS4 TEST button once 2075757 H2P H3P HAP H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P 1 1 Fe 33 4 d nu 4 Hold the BS4 TEST button down for 5 seconds or more 10 Press the BS1 MODE button once and the charging is complete 3 i Record the amount that was added on the additional refrigerant 5 Charging mode judgement oo charge label provided with the unit and atta
41. ant state Perform the test operation as decribed in the paragraph Test operation procedure on page 26 In case refrigerant was added without using the leak detection function charging in cooling mode R ln the check operation the following checks and judgement will be performed MN Check of the stop valve opening m Check for wrong wiring MH Judgement of piping length R It takes 30 minutes to complete the check operation Check operation procedure 1 Close the electric box lid and all front panels except the one on the side of the electric box 2 Turn on the power to the outdoor unit and all connected indoor units Be sure to turn the power ON at least 6 hours before operation in order to have power running to the crank case heater 3 the field setting as needed using the push buttons on the PCB A1P of the outdoor unit Refer to Field setting on page 23 Installation manual U 5 18MX4XPQ Urban Multi air conditioner 4PW28163 1 4 Set the check operation without initial refrigerant decision following setting mode 2 in the field setting and perform the check operation The system operates for 30 minutes and automatically stops the check operation R l no malfunction code is displayed on the remote controller after the system has stopped check if the operation is completed Normal operation will be possible after 5 minutes R f a malfunction code is displayed on the remote controller cor
42. arted up sensor etc the The reversed phase protection detector is designed to stop the product in the event of an abnormalities when the product is started up Replace two of the three phases L1 L2 and L3 during reverse phase 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 goes on and off while the product is operating attach a reversed phase protection circuit locally Running the product in reversed phase can break the compressor and other parts Means for disconnection must be incorporated in the field wiring in accordance with the wiring rules An all pole disconnection switch must be available on the unit U 5 18MX4XPQ Urban Multi air conditioner 4PW28163 1 Installation manual 8 1 Internal wiring Parts table Refer to the wiring diagram sticker on the unit The abbreviations used are listed below Printed circuit board Push button switch mode set return test reset Capacitor Dip switch Crankcase heater Fuse 250 V 8 A B A4P A8P Fuse 250 V 3 15 A T A1P Field fuse Fuse 250 V 6 3 A T A2P Light emitting diode service monitor orange Pilot lamp service monitor green Magnetic relay Magnetic contactor MIC Magnetic contactor M2C M3C Magnetic relay K2M K3M Magnetic relay Y1S Y3S Magnetic relay ETHC E3HC
43. ase 5 UNPACKING AND PLACING THE UNIT m Remove the four screws fixing the unit to the pallet m Make sure the unit is installed level on a sufficiently strong base to prevent vibration and noise A Do not use stands to only support the corners See figure 7 X Not allowed except for U 5MX4 o Allovved units mm m Make sure the base under the unit is larger than the 765 mm of the unit depth See figure 3 M The height of the foundation must at least be 150 mm from the floor R The unit must be installed on a solid longitudinal foundation steelbeam frame or concrete as indicated in figure 3 Model A B U 5MX4 635 497 U 8 10MX4 930 792 U 12 18MX4 1240 1102 R Support the unit with a foundation of 67 mm wide or more The support leg of the unit is 67 mm wide see figure 3 A Use R410A to add refrigerant All field piping must be installed by a licensed refrigeration technician and must comply with relevant local and national regulations Caution to be taken when brazing refrigerant piping Do not use flux when brazing copper to copper refrigerant piping Particularly for the HFC refrigerant piping Therefore use the phosphor copper brazing filler metal BCuP which does not require flux Flux has extremely harmful influence on refrigerant piping systems For instance if the chlorine based flux is used it will cause pipe corrosion or in particular if the flux contains fluorine i
44. ch it on the back side If the indoor temperature is 20 C DB or lower charging in of the front panel cooling mode is not possible in some cases The unit will Perform the test procedure as described in In case refrigerant automatically select Te cooling mode or heating moge for was added without using the leak detection function pre charging charging charging in heating mode on page 26 U When charging in cooling mode the unit will stop operating when the required amount of refrigerant is charged During charging in heating mode a person must manually close valve A when complete charging is finished Calculate how much refrigerant to be added using the formula explained in the chapter How to calculate the additional refrigerant to be charged on page 9 A For the cooling only models heating mode can not be selected In this case the led disply will indicate out of range Refer to the procedure as described in 5 Final adjustment of the amount of refrigerant on page 22 U 5 18MX4XPQ Installation manual m 6 Charging in cooling mode Start up Wait while the unit is preparing for charging in cooling mode H1P H2P H3P H4P H5P H6P H7P Pressure control for the first minute ee a Start up control for the next 2 minutes 2 r 55 0 5 y VVaiting for stable heating conditions for the next 15 minutes according to the system 32 HiP H2P H3P H4P H5P H6P H7P
45. d 3 Make sure that there is no danger of fire due to leakage of The electromagnetic waves may cause the control inflammable gas system to malfunction preventing normal 4 Ensure that water cannot cause any damage to the location in operation case it drips out the unit e g in case of a blocked drain pipe Locations where flammable gases may leak where 25 l thinner gasoline and other volatile substances are 5 The piping length between the outdoor unit and the indoor unit handled or where carbon dust and other may not exceed the allowable piping length Refer to incendiary substances are found in the 6 6 Example of connection on page 8 atmosphere 6 Select the location of the unit in such a way that neither the Leaked gas may accumulate around the unit discharged air nor the sound generated by the unit disturbs causing an explosion anyone m When installing take strong winds typhoons or 7 sure that the air inlet and outlet of the unit are not earthquakes into account positioned towards the main wind direction Frontal wind will Improper installation may result in fall over of the unit disturb the operation of the unit If necessary use a windscreen to block the wind 8 Do not install or operate the unit on locations where air contains high levels of salt like e g in the vicinity of oceans Refer for further information to the engineering databook 9 During installation avoid the possibility that anybody can cli
46. dation E surface 20 mm 300 il A MH Prepare a water drainage channel around the foundation to drain waste water from around the unit m f the unit is to be installed on a roof check the strength of the roof and its drainage facilities first M t the unit is to be installed on a frame install the vvaterproofing board vvithin a distance of 150 mm under the unit in order to prevent infiltration of vvater coming from under the unit m When installed in a corrosive environment use a nut vvith plastic vvasher 1 to protect the nut tightening part from rust 6 REFRIGERANT PIPING NOTE Use a belt sling of lt 20 mm wide that adequately bears the weight of the unit A Do not insert fingers rods or other objects into the air inlet or outlet When the fan is rotating at high speed it will cause injury 5 Ifa forklift is to be used preferably transport the unit with pallet first then pass the forklift arms through the large rectangular openings on the bottom of the unit See figure 5 5 1 From the moment you use a forklift to move the unit to its final position lift the unit under the pallet 5 2 Once at final position unpack the unit and pass the forklift arms through the large rectangular openings on the bottom of the unit NOTE Use filler cloth on the forklift arms to prevent Ll damaging the unit If the paint on the bottom frame peels off the anti corrosion effect may decre
47. door units A B and C must fulfill the following restriction conditions A B C 1 To indoor units 2 Outdoor unit multi connection piping kit first branch 3 Outdoor unit multi connection piping kit second branch Outdoor unit multi connection piping kit For R410A only Always use an appropriate kit dedicated for your system Number of outdoor units connected CZ 32PJ4PQ CZ 48PJ4PQ MN Pipe size reducer For R410A only Always use an appropriate kit dedicated for your system CZ P75BK12Q CZ P75HK12Q To select an optimum refrigerant branching kit refer to 6 Refrigerant piping on page 4 1 4 Technical and Electrical specifications Refer to the Engineering Data Book for the complete list of specifications 2 MAIN COMPONENTS For main components and function of the main components refer to the Engineering Data Book U 5 18MX4XPQ Urban Multi air conditioner 4PW28163 1 Installation manual 3 SELECTION OF LOCATION This is a class A product In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures This unit both indoor and outdoor is suitable for installation in a commercial and light industrial environment If installed as a house hold appliance it could cause electromagnetic interference A Make sure to provide for adequate measures in order to prevent that the outdoor unit be used a
48. een the outdoor units in the same piping system must be connected to the Q1 Q2 Out Multi terminals Connecting the wires to the F1 F2 Out Out terminals results in system malfunction The wiring for the other systems must be connected to the F1 F2 Out Out terminals of the P board in the outdoor unit to which the interconnecting wiring for the indoor units is connected The base unit is the outdoor unit to which the interconnecting wiring for the indoor units is connected Installation manual 13 U 5 18MX4XPQ Urban Multi air conditioner 4PW28163 1 Fixing transmission wiring See figure 23 Inside switchbox 1 Heating cooling switching remote control cord when a heating cooling switch remote control optional is connected ABC not for 5 18 4 2 Fix to the indicated plastic brackets using field supplied clamping material 3 Wiring between the units Outdoor outdoor F1 F2 right 4 Wiring between the units Indoor outdoor F1 F2 left 5 Wiring for multi connection only for U 20 54MX4 Q1 Q2 6 Plastic bracket Outside unit A u Be sure to follow the limits below If the unit to unit cables are beyond these limits it may result in malfunction of transmission Maximum viring length 1000m Total vviring length 2000 m Maximum interunit wiring length 30 m between outdoor units Transmission wiring to cool heat 500 m selector Maximum number of branches 16 m Maximum numbe
49. efrigerant reclaimer For details see the operation manual delivered with the refrigerant reclaimer 14 CAUTION FOR REFRIGERANT LEAKS Introduction The installer and system specialist shall secure safety against leakage according to local regulations or standards The following standards may be applicable if local regulations are not available This system uses R410A as refrigerant R410A itself is an entirely safe non toxic non combustible refrigerant Nevertheless care must be taken to ensure that air conditioning facilities are installed in a room which is sufficiently large This assures that the maximum concentration level of refrigerant gas is not exceeded in the unlikely event of major leak in the system and this in accordance to the local applicable regulations and standards Maximum concentration level The maximum charge of refrigerant and the calculation of the maximum concentration of refrigerant is directly related to the humanly occupied space in to which it could leak The unit of measurement of the concentration is kg m the weight in kg of the refrigerant gas in 1 m5 volume of the occupied space Compliance to the local applicable regulations and standards for the maximum allowable concentration level is required According to the appropriate European Standard the maximum allowed concentration level of refrigerant to a humanly space for R410A is limited to 0 44 kg m Tr 1 1 direction of the re
50. er 4PW28163 1 Installation manual 4 Push the BS3 RETURN button and the setting is defined 5 When the BS3 RETURN button is pushed again the operation starts according to the setting Refer to the service manual for more details and for other settings Confirmation of the set mode The following items can be confirmed by setting mode 1 H1P led is off Check the led indication in the field marked 1 Indication of the present operation state normal 35 abnormal IK under preparation or under test operation H1P H2P H3P H4P H5P H6P H7P e D 0 2 Indication of COOL HEAT selection setting 1 When set to COOL HEAT change over by each individual outdoor unit circuit factory setting 2 Indication on master unit when COOL HEAT change over is carried out by outdoor system connected in multiple system combination 3 Indication on slave unit when COOL HEAT change over is carried out by outdoor system connected in multiple system combination HP H2P H3P H4P H5P H6P H7P M Z O 210 0 Q 309 0Oo a This setting factory setting 3 Indication of low noise operation state L N O P standard operation factory setting X L N O P operation HIP H2P H3P H4P H5P H6P H7P g e 4 Indication of power consumption limitation setting DEMAND 69 standard operation factory setting X DEMAND operation HIP H2P H3P H4P H5P H
51. er evacuating the system for 2 hours pressurize the system to 0 05 MPa vacuum break with nitrogen gas and evacuate the system again using the vacuum pump for 1 hour to 100 7 kPa vacuum drying If the system cannot be evacuated to 100 7 kPa 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 FIELD WIRING A All field wiring and components must be installed by a licensed electrician and must comply with relevant local and national regulations The field wiring must be carried out in accordance with the wiring diagrams and the instructions given below Be sure to use a dedicated power circuit Never use a power supply shared by another appliance This can lead to electric shock or fire Be sure to install an earth leakage circuit breaker Because this unit uses an inverter install an earth leakage circuit breaker that is capable of handling high harmonics in order to prevent malfunctioning of the earth leakage breaker itself Do not operate until refrigerant piping work is completed If operated before completion of the piping work the compressor may break down Never remove a thermistor sensor etc when connecting power wiring and transmission wiring If operated without thermistor compressor may break down This product s reversed phase protection detector only works when the product st
52. f the front panel Perform the test procedure as described in In case refrigerant was added without using the leak detection function charging in cooling mode on page 25 3 Normal system display LED Y Cooling Heating displa l ul computer changeover status operation Ready Low before monitor Mode Error master slave noise Demand Multi delivery H1P H2P H3P H4P H5P H6P H7P H8P Single outdoor unit system y ka bal 7 TRT ele t ele ee ojx Multiple Slave outdoor uni Xil unit 18 system Slave uit 4 6 666666 ola a The state of the H8P multi LED in a multi system shows wich unit is the master unit 35 slave 1 unit 3 or slave 2 unit e Only the master unit is connected to the indoor units with interunit wiring 4 Remote controller malfunction code display Remote controller heating mode malfunction codes Error code PB Close valve A immediately and press the TEST OPERATION recharge button once operation The operation will restart from the charging mode judgement onwards Pe Close valve A immediately Check charge following items hold Check if the gas side stop valve is Atter parc te abnormality restart the automatic charging procedure again opened correctly Check if the valve of the refrigerant cylinder is opened Check if the air in
53. frigerant flovv 2 room vvhere refrigerant leak has occurred outflovv of all the refrigerant from the system Pay special attention to places such as a basements etc where refrigerant can stay since refrigerant is heavier than air Procedure for checking maximum concentration Check the maximum concentration level in accordance with steps 1 to 4 below and take whatever action is necessary to comply 1 Calculate the amount of refrigerant kg charged to each system separately amount of refrigerant ina additional charging total amount of amount amountof refrigerant kg in single unit system refrigerant added the system amount of locally in refrigerant with accordance with which the system the length or is charged before diameter of the leaving the factory refrigerant piping NOTE Where a single refrigerant facility is divided into qe 2 entirely independent refrigerant systems use the amount of refrigerant with which each separate system is charged Installation manual U 5 18MX4XPQ Urban Multi air conditioner 4PW28163 1 2 Calculate the smallest room volume m3 In a case such as the following calculate the volume of A B as a single room or as the smallest room A Where there are no smaller room divisions B Where there is a room division but there is an opening between the rooms sufficiently large to permit a free flow of air back and forth opening between rooms 2 partition
54. function on page 20 A Adding refrigerant using the automatic refrigerant charging function is recommended If refrigerant is added manually without using the automatic refrigerant charging function the refrigerant leak detection function cannot be used The refrigerant leak detection function can be used during regular inspections or maintenance after installation of the unit Follow the procedures below permissible quantity can cause liquid hammer A m When charging a system charging over the m Always use protective gloves and protect your eyes When charging refrigerant m When the refrigerant charging procedure is done or when pausing close the valve of the refrigerant tank immediately If the tank is left with the valve open the amount of refrigerant which is properly charged may get off point More refrigerant may be charged by any remaining pressure after the unit has stopped A Electric shock warning R Close the electric box lid before turning on the main power m Perform the settings on the circuit board A1P of the outdoor unit and check the LED display after the power is on via the service lid which is in the lid of the electric box Operate switches with an insulated stick such as a ball gs point pen to avoid touching the life parts Make sure to re attach the inspection cover into the switch box cover after the job is finished m lf the power of some units is turned
55. g Close all the front panels After operating for 40 minutes automatically the operation will stop After the system has stopped operating check the display on the remote controller If E3 FE or UF is displayed on the remote controller as a result of the overcharge judging operation recover 20 of the charged amount of refrigerant and perform the overcharge judgement procedure again When there is no more overcharging of refrigerant detected restart the automatic refrigerant charging from Start of automatic charging refrigerant as explained page 18 again 11 5 Checks after adding refrigerant Are the stop valves for both liquid and gas open Is the amount of refrigerant that has been added recorded 12 BEFORE OPERATION 12 1 A Service precautions A Make sure to open the stop valves after charging the refrigerant Operating with the stop valves closed will damage the compressor A WARNING ELECTRIC SHOCK A Caution when service to equipment performing 1 Do not open the electric box cover for 10 minutes after the power supply is turned off 2 Measure the voltage between terminals on the terminal block for power supply with a tester and confirm that the power supply is shut off In addition measure the points as shown in the figure below with a tester and confirm that the voltage of the capacitor in the main circuit is less than 50 V DC the PC
56. gh voltage electric wiring do not pass near each other keeping them at least 50 mm apart Proximity may cause electrical interference malfunctions and breakage R Be sure to connect the power wiring to the power wiring terminal block and secure it as described under Field line connection power wiring on page 14 R lnter unit wiring should be secured as described in 8 7 Field line connection transmission wiring and cool heat selection on page 13 Secure the wiring with the accessory clamps so that it does not touch the piping and no external force can be applied to the terminal e sure the wiring and the electric box lid do not stick up above the structure and close the cover firmly 8 7 Field line connection transmission wiring and cool heat selection In case of U 5 18MX4 See figure 19 Cool heat selector Outdoor unit PC board A1P Take care of the polarity Use the conductor of sheathed wire 2 wire no polarity Terminal board field supply Indoor unit N oO FP OD Outdoor unit In case of U 20 54MX4 See figure 20 Unit A Master unit Unit B Slave unit Unit C Slave unit To slave unit s To indoor unit To outdoor unit N Gb WOOD To cool heat selector NOTE U 5MX4 cannot install the multi unit transmission D simi wiring Run will not be successful if the wiring is connected to Q1 Q2 TO MULTI UNIT terminal The interconnecting wiring betw
57. icated as follows e OFF lt t ON 3 Blinking Setting the dip switches only in case of a heat pump unit What to set with dip switch DS1 1 COOL HEAT selector refer to 8 7 Field line connection transmission wiring and cool heat selection on page 13 OFF not installed factory setting 2 4 NOT USED DO NOT CHANGE THE FACTORY SETTING What to set with dip switch DS2 1 4 NOT USED DO NOT CHANGE THE FACTORY SETTING What to set with dip switch DS3 1 2 NOT USED DO NOT CHANGE THE FACTORY SETTING Setting the push button switch BS1 5 Function of the push button switch which is located on the outdoor unit PCB A1P TEST TIR C H SELECT MODE L N O P DEMAND HWL 324 IND SLAVE MULTI o 35 o H2P H3P H4P H5P H6P H7P H8P 51 BS2 BS3 BS4 BS5 g MODE SET RETURN TEST RESET BS1 MODE For changing the set mode BS2 SET For field setting BS3 RETURN For field setting BS4 TEST For test operation BS5 RESET For resetting the address when the wiring is changed or when an additional indoor unit is installed The figure shows state of the led indications when the unit is shipped from the factory Installation manual U 5 18MX4XPQ Urban Multi air conditioner 4PW28163 1 Check operation procedure Setting mode 2 1 Turn the power on for the outdoor unit and the indoor unit
58. igerant leaks are present Size of stop valve The sizes of the stop valves connected to the system are as listed in the table below 012 70 25 4 09 56 Gas line stop valve 15 9 019 1 Liquid line stop valve a The model U 12MX4 supports field piping of 12 7 on the accessory pipe supplied vvith the unit b The model U 18MX4 supports field piping of 15 9 on the accessory pipe supplied with the unit The model U 10MX4 supports field piping of 322 2 on the accessory pipe supplied with the unit The model U 12 18MX4 supports field piping of 228 6 on the accessory pipe supplied with the unit c Opening stop valve See figure 14 Service port Cap Hexagon hole Shaft Seal ao O N 1 Remove the cap and turn the valve counterclockwise with the hexagon wrench 2 Turn it until the shaft stops A Do not apply excessive force to the stop valve Doing so may break the valve body as the valve is not a backseat type Always use the special tool 3 Make sure to tighten the cap securely Refer to the table below Tightening torque N m Turn clockwise to close Hexagonal Stop valve size Valve body wrench Cap valve lid Service port 09 5 5 4 6 6 13 5 16 5 4 mm 012 7 8 1 9 9 18 0 22 0 115 9 13 5 16 5 6 mm 23 0 27 0 11 5 13 9 022 2 27 0 33 0 8mm 22 5 27 5 25 4 Closing stop valve See figure 14 1 Remove the cap and t
59. lance will shorten the life of the smoothing capacitor As a protective measure the product will stop operating and an error indication will be made when power imbalance exceeds 4 of the supply rating Follow the electrical wiring diagram supplied with the unit when carrying out any electrical wiring Only proceed with wiring work after all power is shut off 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 ground wires This may cause electric shock Combustion 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 unit uses an inverter and therefore generates noise which will have to be reduced to avoid interfering with other devices The outer casing of the product may take on an electrical charge due to leaked electrical current which will have to be discharged with the grounding Be sure to install an earth leakage breaker One that can handle high frequency electrical noise This unit uses an inverter which means that an earth leakage breaker capable of handling high frequency electrical noise must be used in order to prevent malfunctioning of the ear
60. let and outlet of the indoor unit are not obstructed Remote controller cooling mode malfunction codes Error code Close valve A and replace the empty cylinder When renewed open valve A the outdoor unit will not stop operating r The code on the display shows the unit where a cylinder is to be PA PH renewed 7 PA master unit PH slave unit 1 PE slave unit 2 flashing PA PH and all units After recplacing the cylinder open valve A again and continue the work PB Close valve A immediately recharge Restart the automatic charging procedure again operation Close valve A immediately Check follovving items Check if the gas side stop valve is pa opened correctly charge Check if the valve of the refrigerant hold cylinder is opened After correcting the Check if the air inlet and outlet of the abnormality restart indoor unit are not obstructed the automatic Check if the indoor temperature is not charging procedure lower than 20 C DB again Close valve A immediately Confirm the malfunction code by the remote controller abnormal and correct the abnormality by following stop the Correcting after abnormal completion of the test operation on page 26 Installation manual U 5 18MX4XPQ Urban Multi air conditioner 4PW28163 1 Final adjustment of the amount of refrigerant When the unit displays an out of temperature range the au
61. mb on the unit or place objects on the unit Falls may result in injury 10 When installing the unit in a small room take measures in order to keep the refrigerant concentration from exceeding allowable safety limits in the event of a refrigerant leak Excessive refrigerant concentrations in a closed room can lead to oxygen deficiency A U 5 18MX4XPQ Urban Multi air conditioner 4PW28163 1 Installation manual 4 INSPECTING AND HANDLING THE UNIT At delivery the package should be checked and any damage should be reported immediately to the carrier claims agent When handling the unit take into account the following 1 k Fragile handle the unit with care tt Keep the unit upright in order to avoid compressor damage 2 Choose on beforehand the path along which the unit is to be brought in 3 Bring the unit as close as possible to its final installation position in its original package to prevent damage during transport See figure 4 Packaging material Opening large Belt sling Opening small 40x45 Protector a fF OON 4 Lift the unit preferably with a crane and 2 belts of at least 8 m long See figure 4 Always use protectors to prevent belt damage and pay attention to the position of the unit s centre of gravity m Fasten the unit in place using four foundation bolts M12 It is best to screw in the foundation bolts until their length A remains 20mm above the foun
62. mm U 34MX4 3N 50Hz 400V 640A 80 A 0 75 1 25 mm U 36MX4 3N 50Hz 400V 65 0A 80 A 0 75 1 25 mm U 38MX4 3N 50Hz 400V 737 100A 0 75 1 25 mm U 40MX4 3N 50Hz 400V 815A 100A 0 75 1 25 mm U 42MX4 3N 50Hz 400V 825A 100A 0 75 1 25 mm U 44MX4 3N 50Hz 400V 835A 100A 0 75 1 25 mm U 46MX4 3N 50Hz 400V 866A 100A 0 75 1 25 mm U 48MX4 3N 50Hz 400V 877A 100 A 0 75 1 25 mm U 50MX4 3N 50Hz 400V 96 5 125A 0 75 1 25 mm U 52MX4 3N 50Hz 400V 96 5A 125A 0 75 1 25 mm U 54MX4 3N 50Hz 400V 97 5A 125A 0 75 1 25 mm NOTE The above table indicates power specifications for P standard combinations See 1 Introduction on page 1 f using anything other than the above combinations in a multiple outdoor unit system calculate using the follovving procedure Calculate the recommended fuse capacity Calculate by adding the minimum circuit ampere of each used unit according to the table above multiply the result by 1 1 and select the next higher recommended fuse capacity Example Combining the U 30MX4 by using the U 8MX4 U 10MX4 and 12 4 Minimum circuit ampere of the U 8MX4 18 5 A Minimum circuit ampere of the U 12MX4 21 6 A Minimum circuit ampere of the U 12MX4 22 7 A Accordingly the minimum circuit ampere of the U 30MX4 18 5 21 6 22 7 62 8 A Multiplying the above result by 1 1 62 8 x 1 1 69 08 A so the recommended fuse capacity would be 80 A When using residual current operated circuit breakers be sure to use a
63. mount is the the calculated amount see 6 6 Example of connection on page 8 minus 10 kg therefore the weight must be monitored constantly Continue with the automatic charging in cooling mode OR in heating mode m Charging in heating mode 6 Start up Wait while the unit is preparing for charging in heating mode HiP H2P H3P H4P H5P H6P H7P Pressure control e 31 32 for the first minute Start up control for the next 2 minutes i D o Waiting for stable k 0 55 heating conditions for the next 15 minutes according to 10 Outdoor unit the system 11 Refrigerant charge port 7 Ready 12 Field piping 1 2 H3P H4P H5P H6P 7 13 Refrigerant flow 14 Indoor unit T T ii a Press the BS4 TEST button once within 5 minutes NOTE For a multi outdoor unit system it is not required If the BS4 TEST button is not pushed within 5 minutes Pe will be gr connect all charge ports to a refrigerant tank displayed on the remote controller Refer to 4 Remote controller malfunction code display on page 21 The refrigerant will be charged with 22 kg in pay pag 1 hour time at an outdoor temperature of 30 C DB or with 6kg at an outdoor temperature of 0 C DB If you need to speed up in case of a multiple outdoor system connect the refrigerant tanks to each outdoor unit as shown in figure 29 U 5 18MX4XPQ Installation manual Urban Multi air conditioner 4PVV
64. n Then it returns to setting mode 1 H1P led is off Setting mode 1 The H1P led is off COOL HEAT selection setting Setting procedure 1 Push the BS2 SET button and adjust the led indication to either one of the possible settings as shown below in the field marked 1 ln case of COOL HEAT setting by each individual outdoor unit circuit 2 ln case of COOL HEAT setting by the master unit when outdoor units are connected in multiple system combination 3 Incase of COOL HEAT setting by the slave unit when outdoor units connected in multiple system combination 1 210 310 o a t is necessary to use the optional external control adapter for outdoor unit DTA104A61 62 See the instruction delivered with the adapter 2 Push the BS3 RETURN button and the setting is defined The H1P led is on Setting procedure 1 Push the BS2 SET button according to the required function A H The led indication that matches the required function is shown below in the field marked Possible functions A additional refrigerant charging operation refrigerant recovery operation vacuuming operation setting of high static pressure automatic low noise operation setting at nighttime low noise operation level setting L N O P the external control adapter F power consumption limitation setting DEMAND via the external control
65. ndoor unit 2 Piping between outdoor units Branching the refrigerant piping R For installation of the refrigerant branching kit refer to the installation manual delivered with the kit See figure 13 1 Horizontal surface Follow the conditions listed below Mount the refnet joint so that it branches either horizontally or vertically Mount the refnet header so that it branches horizontally R Installation of the multi connection piping kit See figure 17 Install the joints horizontally so that the caution label 1 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 Make sure that the total length of the piping connected to the joint is absolute straight for more than 500 mm Only if a straight field piping of more than 120 mm is connected more than 500 mm of straight section can be ensured Improper installation may lead to malfunction of the outdoor unit 6 Piping length restrictions Make sure to perform the piping installation within the range of the maximum allowable pipe length allowable level difference and allowable length after branching as indicated in 6 6 Example of connection on page 8 6 5 Protection against contamination when installing pipes Take measures to prevent foreign materials like moisture and contamination from mixing into the system Installation period Protection method A More than a month
66. ne connection power wiring 8 9 Wiring example for wiring inside unit 15 Pipe INSULATION TTT 15 Checking of unit and installation conditions 15 eee ee eee eee 16 11 1 Precautions when adding R410A eee 16 11 2 Stop valve operation eee eee 16 11 3 How to check how many units are 16 11 4 Additional refrigerant 17 11 5 Checks after adding 2 22 22 Before 22 12 1 Service precautions T 22 12 2 Checks before initial 2 2 2 23 123 23 A 25 Service mode 27 Caution for refrigerant lega eee ee eee eee eee eee 27 Disposal 15 28 READ THIS MANUAL ATTENTIVELY BEFORE STARTING UP THE UNIT DO NOT THROW TT AWAY KEEP IT IN YOUR FILES FOR FUTURE REFERENCE IMPROPER INSTALLATION OR ATTACHMENT OF EQUIPMENT OR ACCESSORIES COULD RESULT IN ELECTRIC SHOCK SHORT CIRCUIT LEAKS FIRE OR OTHER DAMAGE TO THE EQUIPMENT BE SURE ONLY TO USE ACCES
67. ng electrical wiring through the knock holes wrap the wiring with protective tape to prevent damage Installation manual U 5 18MX4XPQ Urban Multi air conditioner 4PW28163 1 2 Removing the pinched piping When connecting refrigerant piping to the outdoor unit first remove the pinched piping Removing of the pinched piping must be carried out according to the following procedure 1 Connect a charge hose to the service port of the liquid side stop valve and to the service port of the gas side stop valve 2 Remove the gas from the pinched piping 3 When all the gas is removed from the pinched piping dissolve the brazing using a burner and remove the pinched piping Any gas remaining inside the stop valve may blow off the pinched piping causing damage or injury See figure 6 1 Service port 2 Gas side stop valve 3 Liquid side stop valve 4 Point of melting the brazing metal 5 Pinched piping A Precautions when connecting field piping m Perform brazing at the gas stop valve before brazing at the liquid stop valve R Add brazing material as shown in the figure 025 4 025 4 1 1 BS j 2 2 4 m Be sure to use the supplied accessory pipes when carrying out piping work in the field R Be sure that the field installed piping does not touch other pipes the bottom panel or side panel Especially for the bottom and side connection be sure to protect the piping with suitable insulation to
68. ng the leak test and vacuum drying the piping must be insulated Take into account the following points Make sure to insulate the connection piping and refrigerant branch kits entirely Be sure to insulate liquid and gas piping for all units Use heat resistant polyethylene foam which can withstand a temperature of 70 C for liquid side piping and polyethylene foam which can withstand a temperature of 120 C for gas side piping Reinforce the insulation on the refrigerant piping according to the installation environment Ambient temperature Humidity Minimum thickness 302 75 to 80 15 mm gt 30 C 280 RH 20 mm Condensation might form on the surface of the insulation If there is a possibility that condensation on the stop valve might drip down into the indoor unit through gaps in the insulation and piping because the outdoor unit is located higher than the indoor unit this must be prevented by sealing up the connections See figure 9 Gas line stop valve Liquid line stop valve Service port for adding refrigerant Sealing up treatment Insulation oa UNa Indoor outdoor interconnection piping A Be sure to insulate local pipes as touching them can cause burns 10 CHECKING OF UNIT AND INSTALLATION CONDITIONS Be sure to check the following The piping work 1 Make sure piping size is correct See 6 2 Selection of piping material on page 5 Make sure insulation work is done
69. of the refrigerant uniform before the compressor starts m During the test operation the refrigerant running sound or the magnetic sound of a solenoid valve may become loud and the led display may change but these are not mal functions R During the test operation it is not possible to stop the unit operation from a remote controller To abort the operation press the BS3 RETURN button The unit will stop after 30 seconds 6 Close the front panel in order to let it not be the cause of misjudgement 7 Check the test operation results by the led display on the outdoor unit H1P H2P H3P HAP HSP H6P H7P s 1 90 o XA 0 0 0 Normal completion Abnormal completion 8 When the test operation is fully completed normal operation will be possible after 5 minutes Otherwise refer to Correcting after abnormal completion of the test operation on page 26 to take actions for correcting the abnormality Correcting after abnormal completion of the test operation The test operation is only completed if there is no malfunction code displayed on the remote controller In case of a displayed malfunction code perform the following actions to correct the abnormality Confirm the malfunction code on the remote controller Installation error Error code Remedial action The stop valve of an E3 Check referring to the table in outdoor unit is left EN Additional refrigerant charge on closed F3
70. off the charging procedure can not be finished properly R Incase of a multiple outdoor system turn on the power of all outdoor units R sure to turn ON the power 6 hours before starting the operation This is necessary to warm the crankcase by the electric heater R f operation is performed within 12 minutes after the indoor and outdoor units are turned on the H2P led will be lit and the compressor will not operate NOTE mM See 11 2 Stop valve operation procedure D Ca on page 16 for details on how to handle stop valves MH The refrigerant charging port is connected to the piping inside the unit The units internal piping is already factory charged with refrigerant so be careful when connecting the charge hose MH After adding the refrigerant do not forget to close the lid of the refrigerant charging port The tightening torque for the lid is 11 5 to 13 9 Nem m In order to ensure uniform refrigerant distribution it may take the compressor 10 minutes to start up after the unit has started operation This is not a malfunction Adding refrigerant using leak detection function The automatic refrigerant charging has limits as described below At out of limit the system can not operate the automatic refrigerant charging 0 C DB 43 C DB 20 C DB 32 C DB Total indoor unit capacity 280 Outdoor temperature Indoor temperature Installation manual 17 U 5 18MX4XPQ Urban M
71. on the nameplate of the unit This phenomenon originates from the compressor that needs elapse of a 50 hours run in period before reaching smooth operation and stable power consumption A R sure that the circuit breaker on the power supply panel of the installation is switched off R Attach the power wire securely R Introducing power with a missing N phase or with a mistaken N phase will break the equipment After the installation check the following before switching on the circuit breaker 1 The position of the switches that require an initial setting Make sure that switches are set according to your application needs before turning the power supply on 2 Power supply wiring and transmission wiring Use a designated power supply and transmission wiring and 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 insulation Make sure that correct pipe sizes are installed and that the insulation work is properly executed 4 Ar tight test and vacuum drying Make sure the air tight test and vacuum drying were completed 5 Additional refrigerant charge The amount of refrigerant to be added to the unit should be written on the included Added Refrigerant plate and attached to the rear side of the front cover 6 Insulation test of the main power circuit Using a megates
72. power line and transmission line Be sure to let the povver line and the transmission line pass through a conduit hole Lead the povver line from the upper hole on the left side plate from the front position of the main unit through the conduit hole of the wiring mounting plate or from a knock out hole to be made in the unit s bottom plate See figure 18 Electric wiring diagram Printed on the back of the electric box lid Power wiring and ground wiring between outdoor units inside conduit When the wiring is routed out through the lateral panel Transmission wiring Pipe opening Conduit Power wiring and ground wiring Cut off the shaded zones before use Through cover Precautions when knocking out knockout holes To punch a knockout hole hit on it with a hammer After knocking out the holes we recommend you paint the edges and areas around the edges using the repair paint to prevent rusting When passing electrical wiring through the knockout holes remove any burrs from the knockout holes and wrap the wiring with protective tape to prevent damage 7 Knockout hole Burr If there are any possibilities that small animals enter the system through the knockout holes plug the holes with packing materials to be prepared on site Use a power wire pipe for the power wiring MN Outside the unit make sure the weak low voltage electric wiring i e for the remote control between units etc and the hi
73. r of outdoor units connectable 10 m Upto 16 branches are possible for unit to unit cabling No branching is allowed after branching See figure 16 Outdoor unit Indoor unit Main line Branch line 1 Branch line 2 Branch line 3 No branch is allowed after branch Central remote controller etc 00 Oa pp GM Transmission wiring between outdoor unit and indoor unit s Transmission wiring between outdoor units m Never connect the power supply to transmission wiring terminal block Otherwise the entire system may break down m Never connect 400 V to the terminal block of the interconnecting wiring Doing so will break the entire system The wiring from the indoor units must be connected to the F1 F2 In Out terminals on the PC board in the outdoor unit After installing the interconnecting wires inside the unit wrap them along with the on site refrigerant pipes using finishing tape as shown in figure 12 1 Liquid pipe 2 Gas pipe 3 Insulator 4 Interconnecting wiring 5 Finishing tape For the above wiring always use vinyl cords with 0 75 to 1 25 mm sheath or cables 2 core wires 3 core wire cables are allowable for the cooler heater changeover remote controller only R Be sure to keep the power line and transmission line apart from each other R Be careful about polarity of the transmission line m Make sure that the transmission line is clamped as shown in figure 23 m Check
74. rect the malfunction and perform the check operation again as decribed in Correcting after abnormal completion of the test operation on page 26 In case refrigerant was added without using the leak detection function pre charging charging in heating mode R ln the check operation the following checks and judgement will be performed R Check of the stop valve opening R Check for wrong wiring MN Check of refrigerant overcharge MH Judgement of piping length R It takes 40 minutes to complete the check operation Perform the test operation as decribed in the paragraph Test operation procedure on page 26 Test operation procedure 1 Close all front panels except the front panel of the electric box 2 Turn ON the power to all outdoor units and the connected indoor units Be sure to turn on the power 6 hours before operation in order to have power running to the crank case heater and to protect the compressor 3 Make the field setting as described in the paragraph 12 3 Field setting on page 23 4 Press the BS1 MODE button once and set to the SETTING MODE H1P led OFF 5 Press and hold the BS4 TEST button down for 5 seconds or more The unit will start the test operation R The test operation is automatically carried out in cooling mode the H2P led will light up and the messages Test operation and Under centralized control will display on the remote controller R t may take 10 minutes to bring the state
75. round the unit is adequate for servicing and the MN The refrigerant R410A itself is nontoxic nonflammable minimum space for air inlet and air outlet is available Refer to and is safe If the refrigerant should leak however its figure 1 and choose one of the possibilities concentration may exceed the allowable limit depending on room size Due to this it could be ABCD Sides along the installation site with obstacles necessary to take measures against leakage Refer to the chapter 14 Caution for refrigerant leaks on B Suction side page 27 R In case of an installation site where sides A B C D have H Do not install in the following locations obstacles the wall heights of sides A C have no impact on Locations where sulfurous acids and other service space dimensions Refer to figure 1 for impact of wall corrosive gases may be present in the atmosphere heights of sides B D on service space dimensions Copper piping and soldered joints may corrode E In case of an installation site where only the sides A B have causing refrigerant to leak obstacles the wall heights have no influence on any Locations where a mineral oil mist spray or vapour indicated service space dimensions may be present in the atmosphere Plastic parts may deteriorate and fall off or causing NOTE The service space dimensions in figure 1 are water leakage based on cooling operation at 35 C e Locations where equipment that produces electro magnetic waves is foun
76. rtightness test Ll and vacuum drying using the service ports of the stop valves of the liquid side and of the gas side For the service port location refer to the Caution label attached on the front panel of the outdoor unit m See 11 2 Stop valve operation procedure on page 16 for details on handling the stop valve MH To prevent entry of any contamination and to prevent insufficient pressure resistance always use the special tools dedicated for working with R410A refrigerant R Airtightness test NOTE Make sure to use nitrogen gas F Pressurize the liquid and gas pipes to 4 0 MPa 40 bar do not pressurize more than 4 0 MPa 40 bar If the pressure does not drop within 24 hours the system passes the test If the pressure drops check where the nitrogen leaks from 8 Vacuum drying Use a vacuum pump which can evacuate to 100 7 kPa 5 Torr 755 mm Hg Evacuate the system from the liquid and gas pipes by using a vacuum pump for more than 2 hours and bring the system to 100 7 kPa After keeping the system under that condition for more than 1 hour check if the vacuum gauge rises or not If it rises the system may either contain moisture inside or have leaks Following should be executed if there is a possibility of moisture remaining inside the pipe if piping work is carried out during the raining season or over a long period of time rainwater may enter the pipe during work Aft
77. s a shelter by small animals Small animals making contact with electrical parts can cause malfunctions smoke or fire Please instruct the customer to keep the area around the unit clean Obtain the customer s permission before installing The inverter units should be installed in a location that meets the following requirements The equipment described in this manual may cause electronic noise generated from radio frequency energy The equipment complies to specifications that are designed to provide reasonable protection against such interference However there is no guarantee that interference will not occur in a particular installation It is therefore recommended to install the equipment and electric wires keeping proper distances away from stereo equipment personal computers etc See figure 2 Personal computer or radio Fuse Earth leakage breaker Remote controller Cool heat selector oa fF MM Indoor unit In places with weak reception keep distances of 3m 1 The foundation is strong enough to support the weight of the unit or more to avoid electromagnetic disturbance of other and the floor is flat to prevent vibration and noise generation equipment and use conduit tubes for power and transmission lines A If not the unit may fall over and cause damage or m In heavy snowfall areas select an installation site Injury where snow will not affect the operation of the unit 2 space a
78. sed the system displayed immediately will remain in heating mode This can be required to increase the indoor temperature 1 H2P H3P HAP HSP HP H7P 10 Press the BS4 TEST button to perform the temperature range 315 ee 5 2 0 35 Check Out of range itis not as shown above correct the malfunction as indicated in the display of the remote controller and restart the complete Out of outdoor 10 Press the BS4 TEST button to perform the temperature range temperture range xt 3 3 3 2 iz check Out of indoor Out of range temperture range 3 e bal H1P H2P H3P HAP HSP H6P H7P In these cases press the BS1 MODE button once and follow the procedure as 5 Final adjustment of the amount of refrigerant Out of outdoor 35 ee OH o temperture range on page 22 In range Out of indoor 9 temperture range 3 3 x m The unit will restart from the charging mode judgement onwards and the cooling mode will be selected However if in the mean In these cases press the BS1 MODE button once and follow the time the temperature has become out of range heating mode procedure as described in 5 Final adjustment of the amount of will be selected again this is required to increase the indoor refrigerant on page 22 temperature In range The state of the leds will show m Charging in cooling mode 1 H2P H3P HAP H5P Hep H7P 1 H2P H3P HAP HSP H6P H7P LX XX XX AX 15 y xX Press the BS1 MODE button once The procedure
79. t will damage the refrigerant oil Be sure to perform a nitrogen blow when brazing Brazing without performing nitrogen replacement or releasing nitrogen into the piping will create large quantities of oxidized film on the inside of the pipes adversely affecting valves and compressors in the refrigerating system and preventing normal operation After completing the installation work check that the refrigerant gas does not leak Toxic gas may be produced if the refrigerant gas leaks into the room and comes in contact with a source of fire Ventilate the area immediately in the event of a leak In the event of a leak do not touch the leaked refrigerant directly Frostbite may be caused U 5 18MX4XPQ Urban Multi air conditioner 4PW28163 1 Installation manual 6 1 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 prevent foreign materials e g mineral oils such as SUNISO and moisture from mixing into the system The screw specifications differ for R410A and R407C Use a 2 stage vacuum pump with a non return valve which can evacuate to 100 7 kPa 5 Torr 755 mm Hg NOTE Make sure the pump oil does not flow oppositely into the system while the pump is not working 6 2 Selection of piping material 1 Foreign materials inside pipes including oils for fabrication must be 30 mg
80. ter for 500V check that the insulation resistance of 2 MQ or more is attained by applying a voltage of 500 V DC between power terminals and earth Never use the megatester for the transmission wiring 7 Installation date and field setting Be sure to keep record of the installation date on the sticker on the rear of the upper front panel according to EN60335 2 40 and keep record of the contents of the field setting 12 3 Field setting If required carry out field settings according to the following instructions Refer to the service manual for more details Opening the switch box and handling the switches When carrying out field settings remove the inspection cover 1 Operate the switches with an insulated stick such as a ball point pen to avoid gt touching live parts gs Make sure to re attach the inspection cover 1 into the svvitch box cover 2 after the job is finished NOTE Make sure that all outside panels except for the panel HE on the electric box are closed while working Close the lid of the electric box firmly before turning on the power 1 Led H1 8P Location of the dip switches leds and buttons 2 Push button switches BS1 BS5 Dip switch 1 DS1 1 4 1 Dip switch 2 052 1 4 Dip switch 3 DS3 1 2 ESE 1 2 4 5 Wa Led state Throughout the manual the state of the leds is ind
81. th leakage breaker itself Earth leakage breakers that are especially designed for protecting ground faults must be used in conjunction with main switch and fuse for use with wiring Never connect the power supply in reversed phase The unit can not operate normally in reversed phase lf you connect in reversed phase replace two of the three phases This unit has a reverse phase detection circuit If it is activated only operate the unit after correcting the wiring Power supply wires must be attached securely If the power supply has a missing or wrong N phase equipment will break down Make sure that all wiring is secure the specified wires are used and no external forces act on the terminal connection or wires Improper connections or installation may result in fire When wiring the power supply and connecting the remote controller wiring and transmission wiring position the wires so that the control box lid can be securely fastened Improper positioning of the control box lid may result in electric shocks fire or overheating of the terminals U 5 18MX4XPQ Urban Multi air conditioner 4PW28163 1 Installation manual 8 5 System examples See figure 15 ou om 00 N Oa Ww Field power supply Main switch Earth leakage breaker Outdoor unit Indoor unit Remote controller Power supply wiring sheathed cable 200 V Transmission vviring sheathed cable 16 V Leading
82. that wiring lines do not make contact with refrigerant piping R Firmly close the lid and arrange the electrical wires so as to prevent the lid or other parts from coming loose m When you do not use a wire conduit be sure to protect the wires with vinyl tubes etc to prevent the edge of the knock out hole from cutting the wires Sequential start The outdoor unit PC board A1P is factory set at Sequential start available Setting the cool heat operation 1 Performing cool heat setting with the remote controller connected to the indoor unit Keep the cool heat selector switch DS1 on the outdoor unit PC board at the factory setting position IN D UNIT See figure 22 1 Remote controller 2 Performing cool heat setting with the cool heat selector Connect the cool heat selector remote controller optional to the A B C terminals and set the cool heat selector switch DS1 on the outdoor unit PC board A1P to OUT D UNIT See figure 25 1 Cool heat selector A For low noise operation it is necessary to get the optional External control adaptor for outdoor unit DTA104A61 62 For details see the installation manual attached to the adaptor 8 8 Field line connection power wiring The power cord must be clamped to the plastic bracket using field supplied clamp material The green and yellow striped wrapped wires must be used for grounding See figure 21 oa fF o m N 10
83. the terminal screws may break them MH See the table below for tightening torque for the terminal screws Tightening torque Nem M8 Power terminal block 5 5 7 3 MB Ground M3 Inter unit wiring terminal block 0 8 0 97 A Recommendations when connecting the ground When pulling the ground wire out wire it so that it comes through the cut out section of the cup washer An improper ground connection may prevent a good ground from being achieved See figure 21 8 9 Wiring example for wiring inside unit See figure 26 a fF MMM 10 11 12 13 14 15 16 17 18 Electric wiring Wiring between units Clamp to the electric box with field supplied clamps When routing out the power ground wires from the right side When routing the remote control cord and inter unit wiring secure clearance of 50 mm or more from the power wiring Ensure that the power wiring does not contact any heated sections Clamp to the back of the column support with field supplied clamps When routing out the inter unit wirings from the opening for piping When routing out the power ground wires from the front When routing out the ground wires from the left side Grounding wire When wiring pay attention not to detach the acoustic insulators from the compressor Power supply Fuse Earth leakage breaker Ground wire Unit A Unit B Unit C 9 PIPE INSULATION After finishi
84. tomatic charging of refrigerant can not be completed R Out of outdoor temperature range H1P H2P H3P H4P H5P H6P H7P oe kT oo o Complete the charging of refrigerant on another time when the outdoor temperature is warmer than 0 C DB and colder than 43 C DB R Out of indoor temperature range H1P H2P H3P H4P H5P H6P H7P 12 K K IK 0 0 Complete the charging of refrigerant on another time when the indoor temperature is warmer than 20 C DB and colder than 32 C DB In this case perform a test operation as explained in the chapter 12 4 Test operation on page 25 and the unit will work properly The malfunction code U3 will be displayed on the indoor unit However the refrigerant leak detection function can not be used before completing the refrigerant charging operation and the judgement of the initial amount of refrigerant by performing the test operation again When the temperature has come in range outdoor 0 43 C indoor 20 32 C perform the overcharging judgement procedure for completion of the refrigerant charging operation Overcharging judgement procedure 1 Close all the front panels except the electric box front panel and the lid on the side of the electric box Turn on the power to the outdoor unit and all the connected indoor units Press the BS1 MODE button once and set the setting model H1P OFF Press and hold the BS4 TEST button down for 5 seconds The system will start operatin
85. ulti air conditioner 4PW28163 1 To speed up the proces of charging refrigerant for large systems it is recommended to first manually charge a portion of the refrigerant first before performing automatic charging 1 Calculate how much refrigerant to be added using the formula explained in the chapter How to calculate the additional refrigerant to be charged on page 9 2 The amount of pre charging is 10 kg less than the calculated amount 3 Open valve C valves A and B and the stop valves must be left closed and charge the refrigerant in liquid form via the liquid side stop valve service port See figure 28 Measuring instrument Tank siphon system Charge hose Liquid line stop valve Gas line stop valve Stop valve service port Valve B Valve C Valve A O O JO Wm FWD o Outdoor unit Refrigerant charge port To indoor unit Interunit piping 14 Refrigerant flow 4 If the calculated amount of pre charging is reached close valve C At least the unit should be charged with its original amount of refrigerant refer to the nameplate on the unit before starting the automatic charging 5 After pre charging perform the refrigerant charge operation as shown below and charge the remaining refrigerant of the additional charging amount through valve A See figure 29 Measuring instrument Tank siphon system Charge hose Liquid line stop valve Gas line stop valve
86. urn the valve clockwise with the hexagon wrench 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 refer to the table above 11 3 How to check how many units are connected It is possible to find out how many indoor units are active and connected by operating the push button switch on the printed circuit board A1P of the working outdoor unit In a multiple outdoor unit system you can find out how many outdoor units are connected to the system by using the same procedure Make sure that all the indoor units connected to the outdoor unit are active Follow the 5 step procedure as explained below R The LEDs on the A1P shows the operating status of the outdoor unit and the number of indoor units that are active x4 ON R The number of units that are active can be read from the LED display in the Monitor Mode procedure below Example in the following procedure there are 22 units active OFF XK Blinking NOTE Wherever during this procedure press the 51 MODE button if something becomes unclear You will return to setting mode 1 H1P 6 OFF 1 Setting mode 1 default system status H1P H2P H3P H4P H5P H6P Default status normal s gt o o o o Press the BS1 MODE button to switch from setting mode 1 to monitor mode U 5 18MX4XPQ Urban Multi air conditioner 4PW28163 1 Installation manual
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