Service Manual Haier Group
Contents
1. N s H Q 799 5 z ASLUANT O ASLTANT 2 5 4 10022 A9T ANOOT g i HA 1 o A kl Y T 91 4 001 is 1 asna T T T 1 _ d RI in 7 amp x 8 HEASREEBSHESBVE 4 F Cm Md C UN ES S08L Ek AERE 82 EE T n 1 e 66 e ror di 82 LID st UC E an 01 2 1 9009 319 e I y as I 4 100 e 8 att ruo Ta E sata aN T m d PIS 2 Z RE LNOX a N ere Sc od 61 E a IND 7g Bw 8 a E E zu ISAL I TUS i E n sz MS2. mq HHH X 0v8 095 Lu X B t a A91 AN001 ASLUANTO ASLUANTO zu s Hue ul T n fa ES in or 3 Tro A9T AROLE Y F hires 3a 1I EE a fe END 15 eg za HOY GZ a xe ii 3l H E T 9 vor gn 62 E By cor A91 1001 se SNR or 82 id s Te EL I s ANC 0 901 ay T 1 1 Te cal Els MI L A91 4001 sns LH X4 m sos SSA wale ia aE aT aS Od E s Wed AL 21150 ff 3 P gr we DIE Ri HB EE ED 2 2 er B9 RC hid ARNG IIT 25 A Bt M ar oz I H A SEXE m 1581 n 1 cur aa 095 Te HK lk Se Cf E 8 9 EE je 19 55 S EN bs 01 sni zz H 14 K N 1009 T 7 ino T 12 xc 19 19 Ivan 7 T 2 T c oz BE Xp RE MM T bs ES oz BE 1 go N mn qu oz Ly 44 BE 1590 T z LASTA WE 1 Ps B why DOA UE EJ 2 T 5 ZHINS t VENT cor T 2 I 5 AOSANL 398 vor oro su x LIES
3. 12 13 14 15 16 11 29 28 21 30 c 2 c 2 U gt JJ TI I c I e I Part specialized code 01A0100122 01A1301707 01A1301640 01 5402022 01A3000244 01A0100740 01A0400173 contactor O QTY AC contactor 01A3900161 02A3600018 01A400001 1 01403800141 010400214 01A3900153 01A5736055 01A4000158 16 01A1301708 17 01 0100827 01A0100733 7 10 11 12 13 14 15 18 lide plate right 01A1303642 0143400138 01420000175 01A2500121 01A2500117 01A2400128 01A2000195 010400044 01A2500115 01A2500116 01A1301762 01A0100735 01A5701062 01A0100734 Partition plate tray 01A17561212 01A1436160 0141301763 00 19 20 21 22 23 24 25 26 27 28 8 UNE NI 20022 E 2501 NEC NI 14 16 i a EEN 20 BEEN el 29 7 24 INT SH INA BEE 72871 BEE 3279221 ge 29 30 31 32 33 34 35
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7. 41 1292210722227 IBN EA OUTDOOR UNIT PART LIST OF HDU 24H03 H HDU 28H03 H Name of parts QTY ront grille ndle ront panel ial fan an motor racket for fan motor 7 _ Condenser assy Electric box cable clamp Capacitor for fan motor 11 Resumable transformer 12 clip for sensor 13 temp Sensor Pipe amp environment 14 Capacitor for compressor 15 Capacitor clamp 16 PCB 17 contactor 18 Terminal block 19 electrical source connection block 20 4 valve 21 coil of 4 way valve 22 High pressure switch 23 25 filter 26 assy 27 3 stop valve 28 2 stop valve 29 30 31 Accumulator 32 Partition plate 33 __ panel 34 Bottom cover assy 35 branch triby 36 pedestal 37 cover assy 38 grille 39 Junction box 40 Slide plate right 41 assy TI 10 No pp EER NE n 14 AE el s Zo ai BEZ BEN 1 25 26 28 21 BE 30 E 89 34 36 NECEM 99 40 4 ram 5 c model indoor unit for HDU 42H03 H 2 J c 70 gt JJ I ts A I e Co I Name of parts QTY ir inlet frame assy anging oarding assy Of
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10. 4 Time confirming for TIMER ON After time setting press TIMER button to confirm ON stops blinking While OFF starts blinking Time displayed Unit starts at Xhour X min 5 Time setting for TIMER OFF Follow the same procedures in Time setting for TIMER ON 6 Time confirming for TIMER OFF After time setting press SET button to confirm OFF stops flashing Time displayed Unit stops at X hour X min B Just press TIMER button several times until TIMER mode disappears According to the Time setting sequence of TIMER ON or TIMER OFF either Start Stop or Stop Start can be achieved OPERATION Comfortable Sleep At night before going to bed you can press down the SLEEP button on the controller and the air conditioner will run by the O O9 4 gt 4 comfortable sleeping mode to make you sleep more comfortable J Press SLEEP button once to make the air conditioner have the previous set sleep time first power on is 1h the sleep symbol will appear Press time button V you can choose the time in 1 8 hours Each press of W the time increases reduces 1 hour and xh appears in the humidity setting part OFF appears in TIMER OFF display part and timer off time press SLEEP button again to cancel sleep function the sleep symbol diappears In cooling dehumidifying mode One
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12. Iva El LO dU AD REH H NI o bs 01 SER zz t ig 18 BE T 7002 ii M J o 7 99 cz Bt EL XE amp 19 1 5 2 ET oz BE Xp RE MM T 5 bs E Sz 01 BEY Y 1 gt O JO 8ND N Wi 92 BE 1544 Iwo ke T Jt ep 7 LESH EE ual de me 8H VY dT ut l Sg T 7 9 Sy F a b WI ZHINS N io 2 ES n E _ 01 TOI e e 610 ET m 398 TOI e 5 m o MI n e Oo x 25 8 L 9 5 1 H 5 ELECTRICAL CONTROL FUNCTIONS This section includes introduction of items and electrical functions of serial machines 5 1 Introduction of electrical control functions 5 1 1 Auto running After system is on and turned to auto running mode the system shall first choose a suitable operation mode according to present indoor temperature Then it shall operate under the chosen mode Tr represents indoor temperature and Ts represents set temperature in the following choices a To both cold and heat producing machine For the first time when the machine enters auto running mode it shall choose operation mode according to the following listed Ts 3 C choose cold producing mode set temperature is Ts 3 Tr lt Ts 3 C choose heat producing mode
13. There may be water drop on the outside of duct For cement and other new constructions even if not taking ceiling inner side as duct the humidity will also be so high At this time use glass fiber to perform heat preservation to the whole use iron net to bind the glass fiber Maybe exceeding the unit operation limit for example when indoor dry bulb temperature is 35 C wet bulb temperature 24 C it may lead to overload of compressor Affected by the capacity of air discharging fan the strong wind in the outer duct and wind direction when unit air sending volume exceeds the limit the discharged water of heat exchanger will overflow leading to water leakage Z Z v Aa E amp Air discharging fan Improper example 10 The operation method of fan controller Through the fan controller switch in the electric box the air volume of this unit can be continuously adjusted It is unnecessary to adjust air volume through the duct side wind level unit outside static adjustment The air volume set should be in the operation air volume range Figure I shows the position of fan controller in the electric box and operation method After finishing the electric work perform test run According to the main points in Figure II making the chosen switch No accordant And confirm if it reaches the n
14. Vibration resistance hook Insulation ZN Air outlet X Ceiling Air suction grille with air filter Air conditioner main unit Checking meatus Please consult the after sales service worker of Haier Air Conditioner for the choosing and installation of suction inlet suction duct discharging outlet and discharging duct Calculating the design drawing and outer static pressure and choose the discharging duct with proper length and shape The length difference among every duct is limited below 2 1 Reduce the length of duct as possible as can e Reduce the amount of bend as possible as can 9 Use heat insulation material to bind and seal the part connecting main unit and the flare part of air discharging duct Perform duct installation work before the fitment of ceiling Bad example Bad example Good example 5 J 7 Calculation method of the dimension of the simple quadrate air duct Presuming the unit length friction impedance of the duct is when the dimension of one side of the air duct is fixed as 250mm as shown below Air volume Duct mmxmm Air volume Duct mmxmm ORO 250x560 250x310 eom 250 190 250x120 HDU 42H03 H HDU 24H03 H Static pressure box Equipped with HDU 28H03 H air filter bought 9 The calculation of d
15. AN WARNING DANGER OF BODILY INJURY OR DEATH TURN OFF ELECTRIC POWER AT CIRCUIT BREAKER OR POWER SOURCE BEFORE MAKING ANY ELECTRIC CONNECTIONS GROUND CONNECTIONS MUST BE COMPLETED BEFORE MAKING LINE VOLTAGE CONNECTIONS 1 Selection of size of power supply and interconnecting wires Precautions for Electric wiring e Electric wiring work should be conducted only by authorized personnel e Do not connect more than three wires to the terminal block Always use round type crimped terminal lugs with insulated grip on the ends of the wires e Use copper conductor only Select wire sizes and circuit protection from table below This table shows 20 m length wires with less than 2 voltage drop Circuit breaker Earth leakage breaker Power source Switch breaker Overcurrent protector wire size Switch Leak Model A rated capacity minimum breaker current HDU 42H03 H 30 20 2 5mm 30 30mA HDU 24H03 H HDU 28H03 H 2 Wiring connection Make wiring to supply power to the outdoor unit so that the power for the indoor unit is supplied by and terminals TBI Y TB2 TB E 5 HDU 42H03 H Ep ee e HDU 28H03 H O x Interconnectin x Interconnecting 7 wires 5 T AN WARNING DO NOT CONNECT THE NEUTRAL WIRE 9 TO S S OR PHASE INTERCONNECT ING WIRES MUST BE WIRED WITH SAME SYMBOLS ON THE TERMINALS OF BOTH INDOOR AND OUTDOOR UNIT INCORRECT WIRING CAUSE EQUIPMENT DAMAGE
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17. OR A FIRE 3 Wiring procedure 1 Remove set screws on the side before taking off the front panel toward the direction shown in figure 2 Connect wires to the terminal block correctly and fix the wires with a wire clamp equipped near by the terminal block 3 Route the wires in a proper way and penetrate the wires through the opening for electric wiring on the side panel Opening for electric wiring 6 Test run Front panel A CAUTION THIS UNIT WILL BE STARTED INSTANTLY WITHOUT ON OPERATION WHEN ELECTRIC POWER IS SUPPLIED BE SURE TO EXECUTE OFF OPERATION BEFORE ELECTRIC POWER IS DISCONNECTED FOR SERVICING e This unit has a function of automatic restart system after recovering power stoppage 1 Before starting test run for all Heat pump models Confirm whether the power source breaker main switch of the unit has been turned on for over 12 hrs to energize the crankcase heater in advance of operation 2 Test run Run the unit continuously for about 30 minutes and check the following e Suction pressure at check joint of service valve for gas pipe e Discharge pressure at check joint on the compressor discharge pipe e Temperature difference between return air and supply air for indoor unit 7 2 Installation for indoor unit Safety precautions Please read these Safety Precautions first then accurately execute the installation work e Though the precautionary points indicated herein are di
18. at your desired mode speed regardless of FAN setting 3 Select temp setting 5 Unit stop Press TEMP button Press ON OFF button Only time and room temp remains on LCD indicators go out Vertical flap closes automatically Every time the button is pressed temp setting increases 1 If button is kept depressed temp setting will increase quickly W Every time the button is pressed temp setting Hints cae ie Wire controller can memorize each operation If button is kept depressed temp setting will status When starting it next time just press decrease quickly ON OFF button and unit will run in previous Unit will start running to reach the temp setting status on LCD OPERATION TIMER operation Set Clock correctly before starting Timer operation You can let unit start or stop automatically at following time Before you wake up in the morning or get back from outside or after you fall asleep at night TIMER ON OFF 1 After unit start select your desired operation mode Operation mode will be displayed on LCD Power indicator lights up 2 TIMER mode selection Press TIMER button to change TIMER mode Every time the button is pressed display changes as follows ON blank OFF Select your desired TIMER mode ON or OFF To cancel TIMER mode 3 Timer setting Press TIME button A Every time the butto
19. charge amount kg Additional charge amount per 1m kg m Length that additional refrigerant charge is not required m Total length of the piping one way m Additional charge amount of refrigerant 0 70kg Calculate the amount in any case If air perge with the refrigerant is forbidden at the local please use the vacuum method Please see the below figure 2 way valve 2 way valve To use vacuum pump 3 way valve 3 way valve Detach the service port s cap of 3 way valve the 2 p y 14 2 Gaugemanifold 1 Gaugemanifold low for gaugemanifold Then connect the projection O lt valve rod s cap for 2 way valve and 3 way s connect the service port into the projection of charge hose QQ of charge hose center for gaugemanifold into Jens En vacuum pump Vacuum pump Vacuum pump Open the handle at low in gaugemanifold operate vacuum pump If the scale moves of gause low reach vacuum condition in a moment check T again Vacuumize for over 15min And check the level gauge which should read 0 1 MPa 76 cm Hg at low pressure side After the completion of vacuumizing 2 close the handle Lo in gaugemanifold and stop the gt Close operation of the vacuum pump Check the condition of the scale and hold it for 1 2min nu If the scale moves back in spite of tightening make flaring work again
20. heat generation or fire Take care that wiring does not rise upward and accurately install the lid service panel Its improper installation can also result in heat generation or fire When setting up or moving the location of the air conditioner do not mix air etc or anything other than the designated refrigerant R22 within the refrigeration cycle Rupture and injury caused by abnormal high pressure can result from such mixing Always use accessory parts and authorized parts for installation construction Using parts not authorized by this company can result in water leakage electric shock fire and refrigerant leakage CAUTION Execute proper grounding Do not connect the ground wire to a gas pipe water pipe lightning rod or a telephone ground wire Improper placement of ground wires can result in electric shock The installation of an earth leakage breaker is necessary depending on the established location of the unit Not installing an earth leakage breaker may result in electric shock Do not install the unit where there is a concern about leakage of combustible gas The rare event of leaked gas collecting around the unit could result in an outbreak of fire For the drain pipe follow the installation manual to insure that it allows proper drainage and thermally insulate it to prevent condensation Inadequate plumbing can result in water leakage and water damage to interior items NOTICE All Wiring of this installatio
21. length 3 Mechanical data Indoor Unit Air outlet Duct Drainpipe Air inlet Outdoor Unit Compressor Inside of unit th iN ZE Connecting piping and electrical wiring Air inlet Air inlet 7 MM Uff ff Mi Air outlet Jm JJ Wmm pmm 7 2 7 7 2 Y M m m Air outlet HDU 42H03 H Drain hose HDU 24H03 H HDU 28H03 H indoor unit dimensions HDU 24H03 H HDU 28H03 H 840 130 HDU 42H03 H controller introduction Operation Buttons and display of the wire controller CLOCK Used to set correct time TIMER Used to select TIMER ON TIME Used to set clock and timer setting Power ON OF Used for unit start and stop Cautions On cooling only unit heating mode is not available 8 88 Used to select AUTO FAN SPEED mc 22 omo S30 ne gt Zo D x AUTO TIMER OFF TIMER ON OFF Used to select fan speed LO MED HI CJ Used to select your desired temp SET Used to confirm Timer and Clock settings SLEEP Used to select sleep mode Note The above info
22. liquid pipe ix slot assy ottom plate assy air discharge framework iring clap p 1 ix tendon assy 1 over plate assy 2 loat braket evaporator fixing plate 3 eat exchanger assy cover plate assy 3 fix tendon assy 2 evaporator fixing plate 2 transformer relay SCL DPDT C1 capacitor cover of elelctrical box an speed adjusting board ress clip wiring harness indoor PCB terminal block electrical box liquid inlet pipe assy air return pipe assy evaporator fixing plate 3 float switch motor hold motor hold motor bracket snail shell 1 ermitic circle of snail shell ermitic circle of snail shell 39 40 41 ing washer M4 42 43 drain pan assy 44 guard plate assy 1 45 guard plate assy 2 c 0 5 5 O o o 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 30 31 32 33 34 35 36 h h D o 2 2 20 El BNET 197 E Soa 216510 19 200 03 5 B 99 3 24 BE eA 72821 30 GEE 34 35 36 40 42 44 45 alx o 0 a 5 5 5 4 3 N model outdoor unit for HDU 42H03 H 19 vn minie VU
23. must NOT be faced toward wind direction 3 Installation of outdoor unit 1 Installation Wind direction Fix the unit in a proper way according to the condition of a place where it is installed by referring to the following NO a Concrete foundation Foundation anchor Unit Anchor bolt Concrete foundation fix by bolts Note 1 Give enough room for the concrete Note 1 Place the concrete foundation deep enough foundation to fix by anchor bolts e Install the unit so that the angle of inclination must be less than 3 degrees 4 R f t DC Flare connection Check joint rigeran piping Gas pi Service valve as pipe Nun 1 Outline piping Indoor lt 5 PK Outdoor unit unit lt Dd Liquid 2 Piping size se Je connection HDU 24H03 H HDU 28H03 H Gas piping 19 05 3 4 x1 0mm 15 88 5 8 x1 0mm Liquid piping 9 52 3 8 x0 8mm 9 52 3 8 x0 8mm Model HDU 42H03 H 90 0 5 eJ e Install the removed flared nuts to the pipes to be connected then flare the pipes 3 Limitations for one way piping length and vertical height difference One way piping length less than 30m HDU 24H03 H HDU 28H03 H less than 50m for HDU 42H03 H Vertical height difference Less than 15m for HDU 24H03 H HDU 28H03 H less than 30m for HDU 42H03 H Precautions for refrigerant piping Do not twist or crush piping Be s
24. of 5 minutes and then the pump stops running 5 1 10 3 minutes protection for air compressor After air compressor stops running it shall not be re operated until 3 minutes later Whenever system is out of power during operation for less than 3 minutes air compressor shall re operate at least after 3 minutes when power on again 5 1 11 Power cut off memory function When power being cut off repaired for faults or operating stopped for fixing occurs during operation the system shall re operate under previous conditions after power is on PS a Function set press sleeping key continuously for 10 times within 5 seconds panel beeper rings for 4 times b Memory items operation mode set wind speed set temperature wind swing situation electrical heating situation and health function situation c Function cancellation press the sleeping key for 10 times using the controller and then panel beeper rings for two times 5 1 12 Remote network monitoring and controlling function Air conditioner is connected to remote controlling detector manufactured by Haier for tele communication through prefabricated orifice on main board by two core wire and it shall carry out orders form the computer or centralized controller through remote control detector Meanwhile air conditioner shall send its present operation situation and error information to remote control detector The following drawing is connection of air conditioner with remot
25. the return to the beginning of Open the valve rod for the 2 way valve to and angle of anticlockwise 90 degree After 6 seconds later close the 2 way valve and male the inspection of gas leakage 1 f gas leakage tighten No gas leakage gt i ai 21 1 2 If it does not stop gas leakage discharge whole refrigerants z leakage stops th the serice port After flaring work again and vacuumize en fill up prescribed refrigerant from the gas cylinder y 2 way valve 2 way valve Detach the charge hose from the service port open Mod Liquid pipe 9 52mm 2 way valve and 3 way Turn the valve rod anticlockwise until hitting lightly B 3 way valve 3 way valve To prevent the gas leakage turn the service port s cap the valve rod d cap for 2 way valve and 3 way s a lottle more than the point where the torque increases suddenly After attaching the each caps check the gas leakage around the caps Valve rod cap Valve rod cap G Service port cap CAUTION If the refrigerant of the air conditioner leaks it is necessary to make all the refrigerant out then charge the liquid refrigerant into air conditioner according to the amount marked on the name plate 2 way valve 3 way valve 1 9 Valve rod Osenice ort caj 5 Electric wiring e
26. DU 28H03 H HDU 42H03 H model HDU 24H03 H HDU 28H03 H ING RI NO e A 0010541719 OUTDOOR PC BOARD CNS TRANSFORMER PRESSURE CURRENT Aah INDUCTOR 3 OTOR 1 FAN ANS MBTUR CAPACITOR lt model HDU 42H03 H OUTDOOR IRING DIAGRAM PIPING TEMP SENSOR AMBIENT TEMP SENSOR PRESSURE SWITCH CN1 CN3 CN2 X us SAAD O PCB AA ARAA OCD TRANSFORMER CURRENT TEST FAN MOTOR J JTOR CAPACITOR R RED BL BLUE
27. Haier Commercial Air Conditioning Contents Description of Products 4 Features Specifications Mechanical Data Electrical Data Electrical Control Functions Diagnostic Information Installation Instruction Exploded Views amp Part Lists 1 2 3 4 5 6 8 e Features High static pressure 196Pa Flexible setting of the air outlet Super silence design Wired Remote Control Haier Group 2002 9 1 DESCRIPTION OF PRODUCTS amp FEATURES 1 1 Products coding direction Old code H DU 24 H 03 H High static pressure 196Pa Power 03 230V 50Hz 04 240V 50Hz 12 115V 60Hz 13 230v 60Hz refer to cooling and heating C refer to cooling only Nominal cooling capacity BTU h 24 24000BTU h Indoor and outdoor unit code D Duct type U Outdoor unit H means Haier New code D 24 2 Climate type T1 see table 1 gt p Design number A Fix speed H inverter Product type A stands for heat pump type refrigerant is R22 B stands for heat pump type refrigerant is R407 M stands for cool only type refrigerant is R22 stands for cool only type refrigerant is R407 Appearance character high static pressure type Product series one by one type Applicable voltage 2 stands for 220 240V 50Hz 4 stands for 220v 60Hz N stand for 380V 50Hz Cooling Heating capacity 24 24000BTU h Product type stands for cassette type C stands for convertible type D stands fo
28. INSTRUCTIONS CAREFULLY BEFORE BEGINNING INSTALLATION FAILURE TO FOLLOW THESE INSTRUCTIONS COULD CAUSE SERIOUS INJURY OR DEATH EQUIPMENT MALFUNCTION AND OR PROPERTY DAMAGE BE SURE TO READ INSTALLATION MANUAL FOR INDOOR UNIT WITH THIS MANUAL 1 Accessories Edging for protection of electric wires from an opening edge 7 2 Selection of the place of installation Select the place of installation satisfying the following conditions and at the same time obtain a consent from the client or user Edging Place where air circulates Place free from heat radiation from other heat sources Place where drain water may be discharged Place where noise and hot air may not disturb the neighborhood Place where there is not heavy snowfall in the winter time Place where obstacles do not exist near the air inlet and air outlet Place where the air outlet may not be exposed to a strong wind Place surrounded at four sides are not suitable for installation A 1m or more of overhead space is needed for the unit Mount guide louvers to place where short circuit is a possibility e When installing several units secure sufficient suction space to avoid short circuiting 1 Open space requirement around the unit Unit mm inlet gt 13 gt 12 gt 500 5 Air Servicing inlet space i outlet 2 Installation where the area with strong winds Install the unit so that the air outlet section of the unit
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30. ature 3 C temperature drops high speed set temperature 2 C medium speed set temperature 1 C temperature medium speed rises set temperature low speed low speed b During heat producing suitable for both heat and cold producing machine when wind speed is switched from low to high switching shall not be enabled until operation under present wind speed exceeds 3 minutes There is no time lag when switching from high wind speed to low wind speed Switching shall be as the following chart shows temperature low speed drops T gt low speed 5 18 10 medium speed medium speed 5 2 Ts 3 C high speed temperature rises high speed 5 1 3 Dehumidifying running When system enters dehumidifying running air compressor outdoor unit and indoor fan shall operate as the following stipulations Tr herein after refers to indoor temperature and Ts refers to set temperature 7 1 3 1 Tr Ts 2 C and when air compressor and outdoor fan are continuously running indoor fan runs in set wind speed Working section under such status is section A 5 1 3 2 TSSTtSTs 2 oC air compressor and outdoor fan runs for 10 minutes with a 6 minutes break and indoor fan runs in low speed Working section under such status 15 section B 5 1 3 3 Tr lt Ts air compressor and outdoor fan stops running indoor air fan runs in low speed Working section under such status is section C After
31. door unit electric wire and connection wire is at least 1m away from television and radio This is to avoid the image disturbance and noise caused by the above mentioned home appliance Even if 1m away if the electromagnetic wave is too strong it can also cause noise 2 The height of ceiling e The indoor unit can install on the ceiling which height is no more than 3m 3 Install and use the hoisting screw Check if the installation place can bear the weight of unit assembly 8 If not certain strengthen it before install the unit Over 100 Over 900 Checking meatus 600x600 Over 300 Over 200 Air in zs Ceiling 3 Preparation before installation 1 The position relation among hoisting screw unit mm 360 890 20 HDU 24H03 H HDU 28H03 H Down side Upside 750 1 360 1270 HDU 42H03 H Down side Upsid 11037 2 If necessary cut the opening installation and checking needed on the ceiling If has ceiling Before installation finish the preparation work of all the pipes refrigerant drainage and wire wire controller connection wire indoor and outdoor unit connection wire of indoor unit so that after installation they can be immediately connected with outdoor unit Cut the opening on the ceiling Maybe it needs to strengthen the ceiling to keep the ceiling even and flat and prevent the ceiling from vibration For details please consult to the builde
32. e outdoor coil temperature sensor 5 4 4 sensor broken broken 6 E5 5 over current protect limit over current protect limit 7 EG 6 pressure protect pressure protect communication trouble 8 E7 7 between wired remote three phase protect controller and indoor unit communication trouble Communication trouble 9 E8 8 between indoor and outdoor between wired remote controller unit and indoor unit communication trouble 1 ES i ree phase protect between indoor and outdoor unit Indicate lamp of remote control receiver board Green power lamp Yellow timer lamp Red running of compressor Red water pump The faults are shown by lamp flashing or display on the remote controller pJeoq uo ZNO JO SUId si eunssoJd edid pe ejdsip VUA eSI Ie EU 074 dl eed 9 qnoJ ul SI NIJD 6unsel 91155914 uonoeuuoo eu pexui Jou uonoeuuoo pexui JOU uonoeuuoo Y xul n U pue pJeoq Joopino uo JNO 199005 yndjno sey uo gyr zyr ejoJ mou e si uo zyr Aejoy indjno ou sey Joopino uo zyf Keje 2002 mau e oBueuo si 2002 jndjno ou sey pieog Joopino uo 002 30 p yes
33. e control detector Computer board remote control detector connecting orifice 5 1 15 Trail run In turning off situation press and hold compelling key the beeper shall ring for once and beep twice after 5 seconds Loosen the key and enter compelled cold producing indoor air fan shall run in high speed and air compressor outdoor air fan shall operate Press compelling key again and compelled cold producing shall end 5 2 Defrost operation Flow Chart 5 2 1 Model HDU 24CA03 M R1 HDU 28CA03 M R1 HDU 36CA03 M R1 HDU 42CA03 M R1 Se A N Open outdoor fun Compressor ON Compressor off or 55s Condition for compressor OFF Operation indoor fun motor 4 way value ON Compressor ON i Turn off Clear the sign of 4 way value defrosts OFF compressor Compressor ON 6 DIAGNOSTIC INFORMATION TROUBLE SHOOTING 6 1 Fault Codes HDU 24CA03 M R1 HDU 28CA03 M R1 HDU 36CA03 M R1 HDU 42CA03 M R1 Flash time of No Code rdi Trouble contents old Trouble contents new indicate lamp 1 EO 10 drainage system trouble drainage system trouble indoor temperature sensor indoor temperature sensor 2 E1 1 broken broken indoor coil temperature sensor indoor coil temperature sensor 3 E2 2 broken broken outdoor temperature sensor outdoor temperature sensor 4 3 broken broken outdoor coil temperatur
34. e of liquid pipe 3 Press ON OFF button to start operation use wire controller to set to Cooling operation 4 Confirm the function of the unit according this manual 8 Exploded Views amp Part Lists model indoor unit of HDU 24H03 H HDU 28H03 H INDOOR UNIT PART LIST OF HDU 24H03 H HDU 28H03 H Name of parts QTY connection frame of inlet air anging oarding assy Of liquid pipe evaporator brackt 1 ottom plate assy ix slot assy air discharge framework evaporator brackt 2 evaporator fixing plate 1 10 cover board assy 1 11 cover board assy 2 12 fixtendon assy 1 13 fixing plate 3 14 cover board assy 3 15 fix tendon assy 2 16 transformer 17 PCB 18 speed adjusting board fan motor capacitor electrical box cover ermianl block lectrical box assy racket of floater loat switch sensor bracket ambient temp sensor supporting plate snail shell 2 2 evaporator assy ermitic circle of snail shell an 1 snail shell 1 motor bracket motor fixing bolt motor drain pan assy guarding plate assy 2 guarding plate assy 1 2 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 9 10 EEN 14 BEE 16 IET NI al 20 BEE Zl __23_ 24 BEEN 1272621 72821 30 E 329221 34 GREEN gy 5238 39 model outdoor unit for HDU 24H03 H HDU 28H03 H
35. ed to a small room it is necessary to have a prior planned countermeasure for the rare case of a refrigerant leakage to prevent the exceeding of threshold concentration In regards to preparing this countermeasure consult with the company from which you perchased the equipment and make the installation accordingly In the rare event that a refrigerant leakage and exceeding of threshold concentration does occur there is the danger of a resultant oxygen deficiency accident For installation confirm that the installation site can sufficiently support heavy weight When strength is insufficient injury can result from a falling of the unit Execute the prescribed installation construction to prepare for earthquakes and the strong winds of typhoons and hurricanes etc Improper installations can result in accidents due to a violent falling over of the unit For electrical work please see that a licensed electrician executes the work while following the safety standards related to electrical equipment and local regulations as well as the installation instructions and that only exclusive use circuits are used Insufficient power source circuit capacity and defective installation execution can be the cause of electric shocks and fires Accurately connect wiring using the proper cable and insure that the external force of the cable is not conducted to the terminal connection part through properly securing it Improper connection or securing can result in
36. eeded air volume Note 1 When operating the fan controller it is possible to touch the electric charging part so do cut off the power supply 2 Do not set the dial at the position less than 1 3 The figure circled in Figure II indicate the capacity number of fan controller The non listed capacity number may exceed the permitted operation capacity range so it is impossible to operate 4 When delivering from factory the capacity number of fan controller is set at No 5 Rotate this switch capacity number High Condition of standard air volume Setting Low air volume 100Pa No 1 No 8 Example of duct Once the fan controller has trouble this linker can perform emergency assistant control When this linker is connected to the linker from the PCB it can operate with total load Outer static pressure Pa When this linker is El 40 43 connected to the linker Nm from the PCB through Lower limit Upper limit the fan speed adjustment panel to adjust speed Figure 1 Standard air volume m min Figure 2 The example of the method of choosing capacity number 1 If the unit is in high speed operation needing take outer static pressure is 180 in capacity air volume 34 as working condition point according to Figure II The characteristic chart of air volume the capacity number of fan controller is No 2 2 If the un
37. hour after sleeping operation start the temp is 1 C higher than the setting one After another hour the temp rises 1 and then run continuously for another 6 hrs and then close The actual temp is higher than the setting one which is to prevent from being too cool to your sleep In heating mode One hour after start up the temp decrease 2 C lower than the setting one After another hour decrease by more 2 The temperature will automatically rise by 1 after another 3 hrs operation and then automatically close after 3 hrs continuous operation The actral temperature is lower than the setting one which is to prevent from being too hot to your sleep Note In AUTO mode unit will run in SLEEP function according to the operation mode After setting SLEEP function it is forbidden to calibrate clock f the set sleep time does not reach 8 hours the unit will stop operation automatically after set time is complete Set TIMER OFF function first then set SLEEP and the sleep set is performance set TIMER ON function first the sleep function can only be set before TIMER ON if set theSLEEP function first the TIMER function can not be set SETTING T SHUT DOWN SLEEP RUN BEGINS SLEEP RUN STOPS about 6 hrs SETTING T SHUT DOWN SLEEP RUN BEGINS SLEEP RUN STOPS Ns Heat mode Cooling mode E INSTALLATION MANUAL FOR WIRE CONTROLLER 1 Remove upper part of wire controlle
38. immediately After 55 seconds switch valve turns on And after another 5 second air compressor gets back to operation Indoor air fan operates in cold protection condition 5 1 8 Anti freezing function Indoor vent pipe temperature shall be tested after air compressor has been running for more than 9 minutes Whenever indoor vent pipe temperature is lower than 1 C outdoor air fan air compressor shall stop operating After air compressor is stopped air compressor and outdoor air vent shall not get back to operation only the following listed two conditions are both met 5 1 8 1 Air compressor has been out of operating for more than 3 minutes 5 1 8 2 Indoor vent pipe temperature rises and is above 7 oC 5 1 9 Test of water fill and control of drainage pump a Under cold producing mode including automatically cold producing operation and dehumidifying mode air compressor turns on and water pump starts working When air compressor is turned off water pump shall be turned off after 5 minutes b After water tanker 15 full floater switch shall break When controller detects this signal pump shall get into operating After floater replaces water pump shall continue working for 5 minutes c Whenever water full signal is detected continuously for over 5 minutes pump lamp shall blink for alarming Air compressor shall stop working and pump shall be on for 5 minutes with every 5 seconds break After floater replaces there is a time lag
39. in air compressor is lower than I2 11A outdoor air fan shall get back to operation When CT current is higher than I3 21A and this situation lasts for more than 3 seconds air compressor outdoor air fan shall stop running After air compressor has been out of operation for 3 minutes and CT current is lower than 18A air compressor and outdoor air fan shall get back into operation 5 1 5 Cold wind preventing in heat producing suitable for heat and cold producing machine For the first time the machine enters heat producing mode or when the last defrosting completes if indoor vent pipe temperature equals to or above 28 C and lower than 38 indoor air fan shall run in low speed Whenever indoor vent pipe temperature is higher than 38 C or air compressor has been operating for more than 4 minutes indoor air fan shall run in set wind speed 5 1 6 Blowing of left heat during heat producing suitable for cold and heat producing machine When air compressor is out of operation during heat producing or heat producing is turned off indoor air compressor shall run in low speed for 50 minutes and then stop running 5 1 7 Auto defrosting control suitable for cold and heat producing machine 5 1 7 1 Conditions for defrosting starts a Indoor unit enters over loading protection and outdoor unit stops running outdoor air fan does not enter over heating protection after it gets back to operation for 10 minutes accumulated operation ti
40. it is in low speed operation needing take outer static pressure is 60Pa in capacity air volume 32m as working condition point according to Figure II The characteristic chart of air volume the capacity number of fan controller is No 4 11 Refrigerant pipe The air side pipe liquid side pipe must be faithfully heat insulated if no heat insulation it may cause water leakage The outdoor unit has been charged with refrigerant When connect the pipe to the unit or dismantling the pipe from the unit please follow the figure shown use spanner and torque spanner together When connect cone nut the inner side and outside of cone nut should paste with refrigerant oil Use hand to twist 3 4 rings then fasten with spanner Referring to Table I to confirm the fasten torque too tight may damage nut leading to leakage Check if the connection pipe leaks then do heat insulation treatment as below figure shown Only use seal cushion to bind the joint part of air pipe and heat insulation parts Paste the refrigerant oil here Middle size seal cushion accessory SW Use seal cushion to lt bind the pipe joint Torque spanner Clap S Heat insulation accessory 759 se PE lt P e for liquid pipe MN LD Heat insulation accessory Pipe joint for gas pipe Gas pipe Liquid pipe gt Air inlet Air outlet gt Drain hose connection m
41. lled inside the ceiling of a room corridor The installation is simple and flexible and there is no need to have specified personnel for management thus cutting down the expenses the machine is lighter and smaller and convenientfor installation it takes an extremely small building space thus lower the construction cost the indoorunit isto be concealed insidethe ceiling and hencethe usable space can be saved andthe room decoration will not be affected 2 SPECIFICATION __ HDU24H03H 1 1 BTUW _ 86 96 10 Power source 1PH 220 230V 50HZ Running current AE 90 IS Power cable EE Unit model color Type x Number centrifugalx3 Air flow H M L Heat exchanger Type Diameter 6 6 Total area Temp scope Static pressure Pa Dimension Extemal LxWxH Package Compressor X Model Manufacture Type ee Type x Number 840 640 Air flow H M L Heat exchanger Type Diameter Total area Temp scope Dimension LxWxH Package R 2 Indoor unit Outdoor unit Refrigerant control method capillary Defrosting Noise level CH M L dB A 58 ooe e a o O Weight net gross 74 89 22 4 Refrigerant RI Charge xg Connect method Between Drop LU amp O U Piping length HDU28H03 H 10 xm h Power source 1PH 220 230V 50HZ Running current 1 Power cable Unit mode color Ty
42. me for air compressor is over 45 minutes and air compressor has been running for more than 20 minutes and indoor vent piper temperature is lower than 43 C b Air compressor has been running for more than 20 minutes indoor vent pipe temperature drops 1 C for every 6 minutes and this situation appears continuously for 3 times inner vent pipe temperature is lower than 40 C and after air compressor gets back to operation for 5 minutes c Accumulated time for air compressor running is over 3 hours and air compressor has been running without break for 20 minutes indoor vent pipe temperature is lower than 40 C d Temperature difference between indoor vent pipe temperature and indoor temperature is lower than 16 C and air compressor has been running without break for more than 20 minutes accumulated running for 45 minutes Whenever one of the above conditions is met defrosting shall start 5 1 7 2 Conditions for defrosting stops 5 1 7 2 1 Defrosting is over 9 minutes 5 1 7 2 2 CT current value is over I4 12A 5 1 7 3 After defrosting starts elements shall carry out the following actions Air compressor and outdoor air fan stops running meanwhile indoor air fan stops running After 55 seconds switch valve closes After another 5 seconds air compressor starts up 5 1 7 4 Elements shall carry out the following actions after defrosting completes Air compressor stops running and outdoor air fan operates in high speed
43. n is pressed time increases 10min If button is kept depressed time will change quickly W Every time the button is pressed time decreases 10min If button is kept depressed time will change quickly Time will be shown on LCD It can be adjusted within 24hours 4 Confirming your setting After setting correct time press SET button to confirm ON or OFF stops flashing Time displayed Unit starts or stops at x hour x min ON or OFF Timer mode indicator lights up Just press TIMER button several times until TIMER mode disappears Hints Wire controller possesses memory function when use TIMER mode next time just press SET button after mode selecting if timer setting is the same as previous one OPERATION TIMER ON OFF 1 After unit start select your desired operation mode Operation mode will be displayed on LCD Power indicator lights up 2 Press TIMER button to change TIMER mode Every time the button is pressed display changes as follows Lon blank c Select 3 Time setting for TIMER ON Press TIME button Every time the button is pressed time increases 10min If button is kept depressed time will change quickly W Every time the button is pressed time decreases 10min If button is kept depressed time will change quickly Time will be shown on LCD It can be adjusted within 24hours AM refers to morning and PM to afternoon To cancel TIMER mode
44. n must comply with NATIONAL STATE AND LOCAL REGULATIONS These instructions do not cover all variations for every kind of installation circumstance Should further information be desired or should particular problems occur the matter should be referred to your local distributor A WARNING BE SURE TO READ THESE INSTRUCTIONS CAREFULLY BEFORE BEGINNING INSTALLATION FAI LURE TO FOLLOW THESE INSTRUCTIONS COULD CAUSE SERIOUS INJURY OR DEATH EQUIPMENT MALFUNCTION AND OR PROPERTY DAMAGE 1 Before installation Before finishing installation do not throw the attached parts installation needs Confirm the way to move the unit to the installation place Before moving the unit to the installation place do not remove their packages When have to remove the package use a soft material or protection board with rope to lift the unit assembly to avoid unit damage or bumping a scrape 2 Choose installation place 1 The chosen installation place should meet the following requirements and get the user s consent Place ensures ideal airflow distribution e The passage of airflow has no obstacles When importing outside air it should be imported directly from outdoors if the pipe can not be extended it also can not be imported from top Place ensures enough space for maintenance e The pipe length between indoor and outdoor unit is in the permitted limit referring to outdoor unit installation part e The indoor unit out
45. or making traps e Good piping Inproper piping Suspension 2 Avoid riding across an elevation bolts 1 5m 2m DX uu Air vent Keep free from traps Do not pipe under water insulation of 1 100 or more 74 b When connecting the drain pipe to unit pay suffcient attention not to apply excess force to the piping on the unit side Also fix the piping at a point as close as possible to the unit Stage difference Drain hose c For drain pipe use hard PVC general purpose pipe Drain socket part 25 1 0 1 which can be purchased locally When connecting insert a PVC pipe end securely into the drain socket before tightening securely using the for insulation attached drain hose and clamp Adhesive must not Mein unit be used connection of the drain socket drain Drain socket VP 25 joint Pipecover large field purchased h 7 7 Drinhose 7 7 77 777 25 accessory Clamp accessory field purchased accessory Adhesion Pipe cover for insulation Pipe cover small field purchased for insulation accessory d e f g When constructing drain piping for several units position the common pipe about 100 mm below the drain outlet of each unit as shown in the sketch Use VP 30 11 4 or thicker pipe for this purpose Secure the elevation as high as possible approx 100 mm A downhill grade of VP30 1 100 or more The stiff PVC pipe p
46. outh VP25 PVC pipe Specification of pipe mm Tighten torque Cone dimension A mm 9 52 3270 3990 N cm 333 407 kgf cm 12 0 12 4 15 88 9720 11860 990 1210 kgf cm 22 9 23 3 Other instruction 1 Power supply e The air conditioner must use a special power circuit The user should provide by himself with special switch 25A 30A grounding wire The wiring should be done by a qualified electrician according to the wiring rules specified by national standard An creepage breaker should be installed The grounding wire and null wire of the power cord should be strictly separated It is incorrect to connect the null wire with grounding wire 2 Cut and flaring method A Flarer Use pipe cutter to cut the pipe the burrs must be removed gj After inserting the flarer perform flared nut Pipe diameter Dimension A mm Liquid pipe 9 52mm 3 87 1 0 1 2 Gas pipe 19 05 3 4 1 4 2 2 Gas pipe 15 88mm 5 8 14 22 Incorrect YEU B U Slant Broken Burrs Uncompleted Too long Test run The following items must be noticed carefully during installation After finishing installation performing checking After installing the refrigerant pipe drain hose and electric wire properly perform test run to ensure the system not have trouble Test run 1 Open the stop valve of gas pipe 2 Open the stop valv
47. pe x Number centrifugalx3 Air flow H M L Heat exchanger Type Diameter 6 6 Total area Temp scope Static pressure Pa Dimension Extemal LxWxH Package Compressor X Model Manufacture Type E Type x Number 840 Air flow H M L Heat exchanger Type Diameter Total area Temp scope Dimension External LxWxH R 2 Indoor unit Outdoor unit Refrigerant control method capillary Defrosting Noise level CH M L dB A 58 Ennn o O Weight net gross 74 89 22 8 Refrigerant ER Charge 74 125 Connect method Between Drop LU amp O U Piping length CET O 10 mih Power source Running current zv eer 1 Power cable GUNDAM Unit model color AD42NAHAAA WHITE Type x Number centrifugalx3 Air flow H M L Heat exchanger Type Diameter 3 3 Total area Temp scope Static pressure Pa 30 Dimension External LxWxH Package AU42NAQAAA WHITE Compressor Model Manufacture H23A62QDBE Bristol Type scroll Type x Number Axial X2 840 Air flow H M L Heat exchanger Type Diameter 5 5 Total area Temp scope Dimension LxWxH Package R 4 Indoor unit Outdoor unit Refrigerant control method capillary Defrosting Noise level CH M L gt dB A 64 EXE nn O O Weight net gross 91 111 22 0 Refrigerant ER Charge kg Connect method Between Drop LU amp O U Piping
48. r 3 Hanger bolts installation 9 Use care of the piping direction when the unit is installed Use M10 screw bolt Hole in anchor Insert In order to bear the weight of the unit for existed Hole in plug ceiling using foundation screw bolt for new ceiling using burying embedded screw bolt burying screw bolt or spot supplied other parts Before going on installation adjust the gaps with ceiling De Hanging bolt M10 Hanging bolt M10 washer MIO spring washer 4 Installation of indoor unit M10 nut e Fix the indoor unit to the hanger bolts If required it is possible to suspend the unit to the beam etc Directly by use of the bolts without using the hanger bolts When the dimensions of main unit and ceiling holes does not match it can be adjusted with the slot holes of hanging bracket Adjusting to the levelness Piping side Supply water Main unit a Adjust the out of levelness using a level or by the following method Water level e Make adjustment so that the relation between 0 5 mm the lower surface of the unit proper and water 0 0 2 PVC hose level in the hose becomes as given below Bring the piping side slightly lower b Unless the adjustment to the levelness is made properly malfunctioning or failure of the float switch may occur 5 Drain Piping a Drain piping should always be in a downhill grade 1 50 1 100 and avoid riding across an elevation
49. r Remove upper part of wire controller by press PCB is mounted on lower part of wire controller be careful not to damage it Upper part of wire controller Lower part of wire controller 2 Install wire controller 1 For exposed installation use 2 wood screws accessory 2 For recessed installation use 2 wood screws accessory Note Try as far as possible a flat surface for installation Don t use excessive force when tightening screws or lower part might got deformed INSTALLATION MANUAL FOR WIRE CONTROLLER 3 Indoor unit wiring Connect terminals A B C D on lower part of wire controller to terminals A B C D on PCB of indoor unit wiring from here Hint Hint When make wiring please keep a distance between wires and power supply cord Wire size Shield wire 4 core refer to Hint 3 4 0 33mm Use shielede wires for telecommunication between wire controller and indoor unit indoor unit and outdoor unit Ground the shield on one side Otherwise misoperation because of noise may occur Signal wire is self provided 2 Shielded wire ground Tread surface of the terminal well so that shielding may not contact other part 4 Replace the upper part of wire controller Be careful not to press the wiring Hint 1 Switch box and cord for wiring are not supplied 2 Don t touch PCB with hand 4 Mechanical data model HDU 24H03 H H
50. r duct S stands for split type Q stands for chiller system E stands for ceiling concealed type U stands for outdoor unit Air conditioner 1 2 Brief Introduction to 1 T2 working condition Table 1 Climate type Type of Air Conditioner XP T1 T2 T3 Cool only 18 C 43 C 10 C 35 C 21 C 52 C Heat pump TC 43 C 7 C 35C 7C 52 Electricity heating 43 C 35 C 52 C 1 3 Operating Range of air conditioners Normal condition Operation Operation Range Outside Inside Cooling 15 43 Drying 15 C 43 C Heating 7 C 18 C 1 4 Brief Introduction to Series of Products i Seriation of products The following air ducttype air conditioners are now available for export HDU 24H03 H HDU 28H03 H HDU 42H03 H ii Features of Products a Totally concealed machine body All the machine bodyis tobe installed inside the ceiling having no effecton the beauty ofthe room and withouttaking any room space b Air intake via the rear airintake duct This new design has changed the former unique pattern ofair intake and alarger distance between air intake and airreturn cycles as well as betterair quality can be achieved c Flexible and easier installation The machine body is to be installed in a totally concealed fan system has a longer distance coverage as to supply its airflow to several rooms and the indoor unit may be insta
51. rmation is the explanation of the displayed information therefore varies with those displayed in actual operation Operation Buttons and display of the wire controller HEAT SLEEP Remote control MODE FAN SWING TEMP CLOCK SET TIMER SLEEP RESET o FILTER RESET TIMER ON OPERATION Clock OPERATING LAMP When unit is started for the first time clock should be adjusted as follows Press CLOCK button AM or PM flashes e Pressa to set correct time Each press will increase or decrease 1min If the button is kept depressed time will change quickly After time setting is confirmed press SET AM and PM stop flashing while clock starts working B OPERATION The air conditioner has the function of POWER FAILURE RESUME Fan operation Enjoy yourself by just a gentle press 1 Unit start Press ON OFF button unit starts Previous operation status appears on display Not Timer setting Power indicator lights up 2 Select operation mode Press MODE button For each press operation mode changes as follows AUTO COOL DRY HEAT FAN Unit will run in selected mode stop display at FAN For cooling only type no HEAT function Hints 3 Fan Pre
52. set temperature is Ts 3 After it enters into auto running operating mode shall switch between cold producing and heat producing according to changes of indoor and outdoor temperature The switching mode is as the following chart showing indoor cold producing temperature Ts 3 drops cold producing air supply Ts 3 Ts indoor heat producing heat producing temperature rises b For only cold producing machine For the first time it enters auto running mode the system shall choose running mode according to the following listed 2715 3 C choose cold producing mode set temperature is Ts 3 Tr lt Ts 3 C choose ventilation mode After it enters into auto running operation mode shall switch between cold producing and ventilation according to changes of indoor and outdoor temperature The switching mode is as the following chart shows cold producing indoor temperature ventilation indoor drops cold producing gt temperature Ts 3 am ventilation rises 5 1 2 Auto wind speed choice Tr herein after refers to indoor temperature and Ts refers to set temperature a When machine is for cold producing and wind speed is switched from low speed to high speed switching shall not be enabled until operation under present wind speed exceeds 3 minutes There is no time lag when switching from high wind speed to low wind speed Switching shall be as the following chart shows high speed set temper
53. ss FAN button For each press fan speed changes as follows md LOW MID HIGH Unit will run at selected fan speed 4 Unit stop Press ON OFF button Only time and room temp remains on LCD indicators go out Vertical flap closed automatically Wire controller can memorize settings in each operation mode To run it next time just select the operation mode and it will start with the previous setting No reselecting is needed TIMER ON OFF needs reselecting In FAN mode temp can t be set OPERATION AUTO RUN COOL HEAT and DRY operation Recommendations Use COOL in summer Use HEAT in winter Use DRY in spring autumn and in damp climate 1 Unit start 4 Fan speed selection Press ON OFF button unit starts Press FAN button For each press fan speed changes Previous operation status appears on display as follows Not Timer setting Power indicator lights up LI m mmm mmm df 4 4 L4 2 Select operation mode Ds um de Press MODE button For each press operation mode LOW MID HIGH AUTO changes as follows Unit runs at the speed displayed on LCD In HEAT mode warm air will blow out after a short period of time due to cold draft prevention function POOL BRE HEAL In DRY mode when room temp becomes 2 higher Unit will run in operation mode displayed on LCD than temp setting unit will run intermittently at LOW Stop display
54. system enters dehumidifying operation mode it shall switch among section A B and C with changes of indoor temperature Switching of operation mode is as the following chart shows indoor section temperature Ts 3 Ae section A P Ts 1 gt section B section B Ts indoor 18 1 section C temperature section C rises 5 1 4 Overloading and overheating cut off protection suitable for cold and heat producing machine Under heat producing mode if indoor air fan is on and air compressor has been running for over 2 minutes whenever temperature of indoor vent pipe is above 64 C outdoor air fan shall stop operating And whenever temperature of indoor pipe is equal to or below 54 plus outdoor air fan has stopped for over 45 seconds outdoor air fan shall get back to operation If temperature of indoor vent pipe is over 67 C for more than 10 seconds air compressor shall stop running and indoor air fan shall run in set conditions when set temperature is reached When temperature of indoor air vent pipe is lower than 58 and air compressor has been out of operation for more than 3 minutes air compressor and outdoor air fan shall get back to normal operation Heat producing current cut off protection After air compressor is on for over 60 seconds CT current is higher than I1 13 5A and this situation lasts for 5 seconds outdoor air fan shall stop running After more than 45 seconds stop for outdoor air fan and current
55. t fully closed 3 After vacuuming remove the cap nut for the valve stem and tighten the cap nuts cap nuts for valve stem and charge port with service valve both liquid and gas fully opened 5 Method of opening and closing service valve of outdoor unit Open 1 Remove the hexagonal cap nut 2 Operate the valve using a hexagonal wrench to open by left turn and to close by right turn X 3 Tighten the hexagonal cap nut after the piping works Hexagon wrench attachment 6 Additional charge of refrigerant Outdoor unit is precharged at a factory for the piping length up to 5m Additional charge is not required up to 5m Basic Item refrigerant charge amount Factory charge amount Additional Length that Maximum of refrigerant charge additional piping amount charge is not length Indoor unit per meter required Outdoor unit HDU 42H03 H HDU 24H03 H HDU 28H03 H vii 5m ji Notes i Basic refrigerant charge amount means refrigerant amount when refrigerant piping length is 5m ii When the refrigerant piping length exceeds the length that additional refrigerant charge is not required charge additional refrigerant based on to the calculated amount of refrigerant per unit piping length Example of additional charge amount calculation Calculate the additional charge amount when the piping length is 25 m 25 5 x 006 12 1 Additional
56. uct resistance the simple calculation is as follow table Bend part Each bend takes as a3 4m long straight duct 0 Air inlet grille with air filter chosen chart of simple duct Note 1Pa m 0 1mmAg m Square duct Square duct i i Dimension Dimension m h m n mmxmm m h m n mmxmm 100 250 x 60 1 800 30 250 430 200 250 90 2000 250 470 300 250 120 2400 250 560 400 250 140 3 000 50 250 650 500 250 170 3 500 250 740 600 10 250 190 4 000 250 830 800 250 230 4 500 250 920 1 000 250 210 5 000 250 1000 1 200 20 250 310 5 500 250 1090 1 400 250 350 6 000 100 250 1180 1 600 250 390 gt lt lt DXX X X 8 The attentive matters in installation of air suction and discharging duct Recommend to use anti frost and sound absorbing T duct locally bought Special air discharging outlet The duct installation work should be finished before the fitment of ceiling The duct must be heat insulated Use screw bolt to fix The specific air discharging outlet should be installed at the place where the airflow can be reasonably distributed 9 The surface should leave a checking meatus for checking and maintenance 9 The examples of improper installation Do not use air in duct and take the ceiling inner side instead The result is because of the irregular outer air mass strong wind and sunshine the humidity is increased
57. ure that no dust is mixed in piping Bend piping with as wide angle as possible Keep insulating both gas and liquid piping Check flare connected area for gas leakage Air purge a For HDU 24H03 H HDU 28H03 H Purge air out of indoor unit and piping as shown in the Fig 1 Remove the valve cap on 2 way valve in outdoor unit 2 Loosen by 1 1 5 turn the flare nut of gas pipe which is connected eae T to 3 way valve 9 52mm 3 8 3 Loosen the valve rod of 2 way valve by 90 degrees use a hexagon wrench for about 15 seconds air will be pushed out from flare nut on gas pipe 4 Open 2 way and 3 way valves using specified torque 5 Tighten the caps on the valves with specified torque 6 Conduct gas leakage using gas leakage detector or soap water 4 Note When additional refrigerant piping is necessary first purge air out of connecting pipe by external gas then drive out the excessive refrigerant by purging method Brand new unit is charged 80g more refrigerant than spec This is only for first installation to purgeair in the indoor unit and connecting pipe b For HDU 42H03 H Carry out the air purge of the indoor unit and refrigerant piping by vacuuming Procedures 1 Tighten all the flare nuts of the piping on the side of indoor and outdoor units so that there is no leakage 2 Carry out vacuuming from the service valve charge port with the service valves both liquid and gas side of the outdoor uni
58. ut indoor side should be heat insulated Avoid putting the outlet of drain hose in the places with irritant gas generated Do not insert the drain hose directly into drainage where the gas with sulfur may be generated Backwater bend Because the drain spout is at the position which negative pressure may occur So with the rise of water level in the drain pan water leakage may occur In order to prevent water leakage we designed a backwater bend The structure of backwater bend should be able to be cleaned As the below figure shown use T type joint The backwater bend is set near the air conditioner As figure shown set a backwater bend in the middle of drain hose H1 100mm or the static pressure of air sending motor 2 1 2 1 or between 50 100mm Drainage Test D Conduct a drainage test after completion of the electrical work During the trial make sure that drain flows properly through the piping and that no water leaks from connections 8 In case of a new building conduct the test before it is furnished with the ceiling 4 Be sure to conduct this test even when the unit is installed the heating season Procedures D Supply about 1000 cc of water to the unit through the air outlet using a feed water pump Q Check the drain while cooling operation Ss 6 Installation of air suction and discharging duct muffler cavity air sending Enlarging chart of Sacking joint profile chart A
59. vided under two headings WARNING and A CAUTION those points which are related to the strong possibility of an installation done in error resulting in death or serious injury are listed in the A WARNING section However there is also a possibility of serious consequences in relationship to the points listed in the A CAUTION section as well In either case important safety related information is indicated so by all means properly observe all that is mentioned e After completing the installation along with confirming that no abnormalities were seen from the operation tests please explain operating methods as well as maintenance methods to the user customer of this equipment based on the owner s manual Moreover ask the customer to keep this sheet together with the owner s manual AN WARNING This system should be applied to places as office restaurant residence and the like Application to inferior environment such as engineering shop could cause equipment malfunction Please entrust installation to either the company which sold you the equipment or to a professional contractor Defects from improper installations can be the cause of water leakage electric shocks and fires Execute the installation accurately based on following the installation manual Again improper installations can result in water leakage electric shocks and fires When a large air conditioning system is install
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