Daitsu DU-12UDN Owner's Manual
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Daitsu DU-12UDN Owner's Manual

Daitsu DU-12UDN Owner's Manual

Cassette type air conditioner unit
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Cassette Type Air Conditioner
Unit
Owner's Manual
Commercial Air Conditioners
Unit Model:
Indoor Unit
Outdoor Unit
DU-12UDN
AOD12U-DN

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Summary of Contents for Daitsu DU-12UDN

  • Page 1 Cassette Type Air Conditioner Unit Owner's Manual Commercial Air Conditioners Unit Model: Indoor Unit Outdoor Unit DU-12UDN AOD12U-DN...

  • Page 2: Table Of Contents

    Contents 1 Names and functions of parts ..............1 2 Safety cautions ....................3 3 Wired controller (standard fitting) ..............5 4 Weekly timer (optional fitting) ................ 15 5 Wired controller (with week timer functions) ..........17 6 Optimum operation ..................28 7 Trouble shooting ...................

  • Page 3: Names And Functions Of Parts

    Cassette Type Air Conditioner 1 Names and functions of parts Indoor unit Drainage device(built-in) Drains water removed from the room unit during cooling Drain pipe Air flow flap(at air outlet) Refrigerant pipe and electric wire Air outlet Remote controller The built-in air filter removes dust and dirt Air intake grille Outdoor unit...
  • Page 4 Cassette Type Air Conditioner Indoor unit Drainage device(built-in) drains water removed from the room unit during cooling Drain pipe Air flow flap(at air outlet) Refrigerant pipe and electric wire Air outlet Remote controller The built-in air filter removes dust and dirt Air intake grille Outdoor unit Refrigerant pipe...

  • Page 5: Safety Cautions

    Cassette Type Air Conditioner 2 Safety cautions Read the following carefully to assure safe use. WARNING! Avoid direct air flow to your body and avoid excessive Check whether the installed stand is still firm enough heating or cooling, which may make you feel after the unit has been operated for a long time.
  • Page 6 Cassette Type Air Conditioner WARNING! It is very dangerous to check and repair during the unit Do not use other heating equipment near the air is operating. conditioner. It will affect the cooling performance. Never place objects near the air intake and the air outlet of the unit. It may affect performance or stop operation of the unit.

  • Page 7: Wired Controller (Standard Fitting)

    Cassette Type Air Conditioner 3 Wired controller (standard fitting) Never install the wired controller in a place where there is water leakage. Avoid bumping, throwing, tossing or frequently opening the wired controller. 18 10 MODE SWING TIMER ON/OFF Fig.3.1 Table 3.1 Description of wired controller Timer display Sleep display...
  • Page 8 Cassette Type Air Conditioner (1). ON/OFF As shown in the Fig.3.2: Fig.3.2 Press ON/OFF button, the unit will start to run. When repress the button, the unit will stop running. (2). Fan control As shown in the Fig.3.3, the relevant contents are shown in the figure. Fig.3.3...
  • Page 9 Cassette Type Air Conditioner Press this button to change the fan speed of: Middle High Auto At the DRY mode: the fan speed will be set for low fan speed automatically. (3). Temperature adjustment As shown in the Fig.3.4: Fig.3.4 Press the temperature adjustment button.
  • Page 10 Cassette Type Air Conditioner (4). Swing As shown in the Fig.3.5: Fig.3.5 When pressing "SWING" button, the icon "SWING" will be displayed on LCD, the unit will run in Swing mode. When repressing the "SWING" button, the icon "SWING" will disappear, and the unit will stop swinging.
  • Page 11 Cassette Type Air Conditioner When press this button once, the operation mode will be changed as follow: COOL HEAT Auto At "COOL" mode, the "COOL" icon will light on, the setting temperature should be set up lower than the ambient temperature. If the setting temperature is higher than the ambient temperature, the COOL mode will not start, only the fan is activated.
  • Page 12 Cassette Type Air Conditioner Note: When the protection or malfunction happens after the timer on was set up, the time place will display the protection or the error codes, the timer button cannot be setup, but the time you have setup before is still available.
  • Page 13 Cassette Type Air Conditioner (8). SAVE set up As shown in the Fig.3.9: Fig.3.9 At unit turned off, to press the "FAN" + "▼" buttons continuously for 5 seconds, adjust the Save set menu, at this time displays "SAVE" + "COOL" icons, ( if it is the first setup, that will display the initial value: 26°С), at the temperature setting district, it displays the lower limit temperature, and the set temperature flashes, by pressing "▲"...
  • Page 14 Cassette Type Air Conditioner activation. After powered off, the SAVE setup function will be memorized, the next time power on, the SAVE setting is still active. (9). MEMORY function setup As shown in the Fig.3.10: Press and hold the "MODE" key for 10 seconds when the unit is shut off to switch set values so as to decide either the unit operating status or shut off status shall be memorized after a power fail.
  • Page 15 Cassette Type Air Conditioner MODE SWING TIMER ON/OFF Fig.3.11 The meaning of error codes as show in below: Table 3.2 Error code Malfunction Water pump malfunction High pressure protection of compressor Indoor anti-frozen protection Low pressure protection of compressor Air discharge high-temperature protection of compressor Overload protection of compressor Communication malfunction...
  • Page 16 Cassette Type Air Conditioner (11). Debug Function Setting Debug Function(Setting of Ambient Temp. Sensor) When the unit is shut off, press the "FAN" key and the "SWING" key simultaneously to activate the debug menu. Now the LCD displays "DEBUG". Press the "MODE" key to select setting item and use the "...

  • Page 17: Weekly Timer (Optional Fitting)

    Cassette Type Air Conditioner 4 Weekly timer (optional fitting) Week Timing Controller (With Centralized Control Function) Centralized Control and Week Timer Functions: The centralized controller and the weekly timer are integrated in the same wired controller. The system has both the centralized control and the week timing functions.
  • Page 18 Cassette Type Air Conditioner Press ▲ or ▼ to select the unit that needed to be control. It is available to control several units by Group Control (1~16), or control single unit by Single Control. When selected a certain or several units by Single Control or Group Control, Timer setting and On/Off setting can be set.

  • Page 19: Wired Controller (With Week Timer Functions)

    Cassette Type Air Conditioner 5 Wired controller (with week timer functions) WARNING! N ever install the wired controller where there is water leakage. ① . N ever knock, throw or frequently open the wired controller. ② . MODE SWING TIMER ON/OFF Fig.5.1 Table 5.1...
  • Page 20 Cassette Type Air Conditioner (1). ON/OFF As shown in the Fig.5.2: Press the "ON/OFF" button, the unit will start running. Press the "ON/OFF" button again, the unit will stop running. MODE SWING TIMER ON/OFF Fig.5.2 (2). Fan Control As shown in the Fig.5.3 is about display region and the same as following figures. When press FAN button once, the fan speed will be changed as follow: Auto Middle...
  • Page 21 Cassette Type Air Conditioner (3). Temperature Setting As shown in the Fig.5.4: Press the setting temperature button: ▲: For temperature increase ▼: For temperature decrease (Press this button once, the temperature will be increased or decreased by 1°С.) Note: Press ▲+▼ button for 5 seconds, "EE" will appear where SET TEMP is displayed and all buttons are shielded.
  • Page 22 Cassette Type Air Conditioner (4). Swing Setting As shown in the Fig.5.5: Press SWING button, SWING will be displayed on the LCD, in which case, the unit is under swing status. Press this button again, the words will disappear and the unit stops swinging. Note: Sleep function can be set by remote controller.
  • Page 23 Cassette Type Air Conditioner MODE SWING SWING TIMER ON/OFF Fig.5.6 (6). Timer Setting As shown in the Fig.5.7, Fig.5.8, Fig.5.9: Note: Timer function in this wired controller conneted with weekly timer is invalid and wired controller will be controlled by weekly timer. Either in ON status or OFF status of the unit press TIMER button into timing setting, and then press▲...
  • Page 24 Cassette Type Air Conditioner MODE MODE SWING SWING TIMER TIMER ON/OFF ON/OFF Fig.5.8 Fig.5.9 In timing setting mode, press MODE button to select any desired setting object: Week (1- 7), timer interval (1-4), timing (Timer on or Timer off time), min. part or hour part of time, and then press▲...
  • Page 25 Cassette Type Air Conditioner MODE SWING TIMER ON/OFF Fig.5.11 In time setting mode press MODE button to select any desired setting object: Week (1-7), min. part (0-59) or hour part (0-23), and then press▲ or ▼ button to adjust this object, which is fixed by pressing TIMER button or can be canceled by pressing Timer again.
  • Page 26 Cassette Type Air Conditioner MODE SWING TIMER ON/OFF Fig.5.13 (7). Outdoor Ambient Temp Display As shown in the Fig.5.14: In normal condition, only indoor ambient temp is displayed where "ENVIROMENT" is displayed. At on or off status of the unit, if press SWING button for 5 seconds, outdoor ambient temp (OUT ENV) will be displayed.
  • Page 27 Cassette Type Air Conditioner (8). Energy Saving Setting As shown in the Fig.5.15: Press FAN +▼ for 5 seconds into energy saving menu, in which case, SAVE and COOL is displayed ( If it’s the first time for setting, initial value 26°С will be displayed.) ,lower- limit temp is displayed where set temp is displayed and set temp during setting is displayed and blinking.
  • Page 28 Cassette Type Air Conditioner (9). Power–off Memory Setting As shown in the Fig.5.16: Press mode button continuously for 10s and select if memorize startup and stop status of the unit or not at unit. 01 displayed in the region of displaying setting temp indicates memorizing start and stop status of the unit after power off.
  • Page 29 Cassette Type Air Conditioner Table 5.2 Error Codes Malfunction Water pump malfunction Compressor high-pressure protection Indoor anti-freezing protection Compressor low-pressure protection Compressor high-temp. exhaust protection Compressor overload protection Communication malfunction Indoor fan protection Water-full protection Air inlet indoor ambient temp. sensor malfunction Evaporator temp.

  • Page 30: Optimum Operation

    Cassette Type Air Conditioner 6 Optimum operation Adjust the room temperature properly Adjust the room temperature properly for a comfortable environment. Never place anything under the indoor unit that is to be kept dry. Water may drop from the indoor unit when the humidity over 80% or when the drainage outlet is clogged.

  • Page 31: Trouble Shooting

    Cassette Type Air Conditioner 7 Trouble shooting Warning I n case of something abnormal (such as bad smell), shut off the power switch immediately ① . and contact service center. D o not repair the air conditioner by yourself, because improper repair may cause fire, ②...
  • Page 32 Cassette Type Air Conditioner (2). The following are not machine failure "Trouble" Cause Restart right after stopping Once the unit is stopped, it will not operate The unit does not Press SET TEMP. and then release for a moment to protect it operate when immediatedly.

  • Page 33: Installation Notes(This Should Be Done By Professional)

    Cassette Type Air Conditioner 8 Installation notes(This should be done by professional) Location Noise ● The air conditioner must be firmly installed ● Select a place with good ventilation or it may and 3-4 regular checks must be done every affect performance or increase noise.

  • Page 34: Care And Maintenance

    Cassette Type Air Conditioner 9 Care and maintenance Please cut off the power supply after you used the air conditioner. Warning ● Cut off the power supply before cleaning ● Do not splash water directly to the unit Filter absorbs harmful objects bigger than 1.0mm in air, such as dust, pollen, germ, virus and so on. It can be used for about half a year to one year.

  • Page 35: Instructions Of Unit Installation

    Cassette Type Air Conditioner 10 Instructions of unit installation 10.1 Installation of the cassette type indoor unit 10.1.1 Schematic diagram >1500 >1500 Unit: mm Fig.10.1 Table 10.1 Models H (mm) 10.1.2 Select installation site of the indoor unit Obstruct should put away from the intake or outlet vent of the indoor unit so that the air flow can be blown though all the room.

  • Page 36: Important Notice

    Daitsu would not deal with on time by the inconvenience of the business contact. 10.1.4 Dimension of ceiling opening and location of the hoisting screw (M10) Fig.10.2...
  • Page 37 Cassette Type Air Conditioner Notes: The dimension for the ceiling openings with * marks can be as large as 910mm. But the overlapping sections of the ceiling and the decorated surface boards should be maintained at no less than 20mm. 10.1.5 Main body of hoisting air conditioner Nut (supplied at scene) Gasket (attachment)
  • Page 38 Cassette Type Air Conditioner (6). Backout the install cardboard. Note:Please do tighten the nuts and bolts to prevent air conditioner break off. 10.1.6 Connect the refrigerant pipe The refrigerant is R410A for "*K" and "*K" series outdoor units, GWP=2020 ODP=0 The refrigerant is R22 for "*K"...

  • Page 39: Drain Hose

    Cassette Type Air Conditioner Smear freeze motoroil here Medium sponge (attachment) (entwine the wiring interface with seal mat) Thread fasten(x4) Torque wrench Thermal insulation layer of liquid inle t tube (attachment) (for liquid tube) Thermal insulation Spanner layer of gas collection Gas collection tube tube (attachment)(for gas tube)
  • Page 40 Cassette Type Air Conditioner 4). To prevent bent of the drain hose, the distance between hoisting stand should is 1 to 1.5m. 1-1.5m ○ (Correct) 1/100 or more gradient × (wrong) Fig.10.6 5). Entwine the big sponge on the clamp of drain hose to insulate heat. 6).
  • Page 41 Cassette Type Air Conditioner Roof Hoisting stand 1-1.5m below280mm Drain hose (attachment) Drain raising hose 220mm Clamp(attachment) Ceiling Fig.10.8 (3). Instruction Please install the drain hose according to the following process if several drain hoses join together. T-tie in join drain hose Above100mm Fig.10.9 1).

  • Page 42: Electric Wiring

    Cassette Type Air Conditioner 10.2 Electric wiring All field supplied parts and materials must conform to local laws and regulations. For electric ◆ wiring, refer to WIRING DIAGRAM attached to the unit body. All wiring must be performed by a skilled technician. ◆...

  • Page 43: Installation Of Panel

    Cassette Type Air Conditioner 10.3 Installation of panel Set the panel to the indoor unit body by matching the position of the swing flap motor of the decoration panel to the piping position of the panel to the piping position of the indoor unit as shown in Fig.10.12 below.
  • Page 44 Cassette Type Air Conditioner 10.3.2 Precautions (1). Improper screwing of the screws may cause the troubles shown in Fig.10.13. Air leak Contamination dew condensation, dew dripping Air leak from ceiling Fig.10.13 (2). If gap is still left between the ceiling and the panel after screwing the screws, readjust the height of the indoor unit body (Refer to Fig.10.14).

  • Page 45: Installation Of Outdoor Unit

    Cassette Type Air Conditioner 10.4 Installation of outdoor unit 10.4.1 Dimension of outdoor unit Fig.10.16 Table 10.4 Model 1018 1018 1032 1250 1107 1100 10.4.2 Schematic diagram >2m >0.5m >0.5m >0.5m Fig.10.17...

  • Page 46: Installation Of Condensate Pipe

    Cassette Type Air Conditioner 10.4.3 Precautions on installation of outdoor unit To ensure the unit in proper function, selection of installation location must be in accordance with following principles: Outdoor unit shall be installed so that the air discharged by outdoor unit will not return and that ◆...
  • Page 47 Cassette Type Air Conditioner Vacuum meter Liquid pipe Gas pipe Vacuum pump Fig.10.19 Starting the vacuum pump, when the indicator turns to-1 bar, closing the low pressure handle ◆ and stopping vacuumize. keep for 15 minutes, ensuring the pressure of the vacuum gauge remains.
  • Page 48 Cassette Type Air Conditioner Caution: After the pipes are wrapped by protective materials, never bend the pipes to form very small angle, and otherwise the pipes may crack or break. Use adhesive tape to wrap the pipes: ◆ (1). Use adhesive tape to bundle the connecting pipe and the cables together. To prevent condensate from overflowing out from the drain pipe, separate the drain pipe from the connecting pipe and the cables.
  • Page 49 Cassette Type Air Conditioner Fig.10.24 Schematic Diagram of Installation Table 10.5 Name Wall Surface Bottom Plate of Wired controller Screw M4×10 Panel of Wired controller T he communication distance between the main board and the wired controller can be as far ②...

  • Page 50: Power Cable Connection

    Cassette Type Air Conditioner 10.4.9 Power Cable Connection Caution: Before installing the electrical equipment, please pay attention to the following matters which have been specially pointed out by our designers: C heck that if the power supply used conforms to the rated power supply specified on the ①...

  • Page 51: Products Electric Installation

    Cassette Type Air Conditioner Connection of the Power Cable ◆ (1). Air-conditioning unit with single-phase power Caution:Take great care when carrying out the following connections, so as to avoid supply malfunction of the air-conditioning unit because 1). Remove the front-side panel of the outdoor unit. of electromagnetic interference.
  • Page 52 Cassette Type Air Conditioner Table 10.6 Capability of Minimum Outdoor Indoor Power Air Switch Sectional Area of power power Model Supply (A)(Outdoor / Earth Wire (mm supply cord supply cord Indoor) (Outdoor/Indoor ) 3×2.5 3×1.0 16/6 2.5/1.0 H07RN-F H05VV-F 3×4.0 3×1.0 20/6 4.0/1.0...
  • Page 53 Cassette Type Air Conditioner (1). Water pipe (2). Gas pipe (3). Blowing pipe (4). Other places that professional personnel consider them unreliable. The power cable communication wire connection between indoor and outdoor Warning: The signal wire between indoor and outdoor unit shall be installed in the shielded bushing.Schematic Diagram of Unit Line Connection: ①...
  • Page 54 Cassette Type Air Conditioner ① .Power cord 5×2.5 mm (H07RN-F) ② .Power cord 3×1.0 mm (H05VV-F) ③ .Communication Cords 2×0.75 mm (H05RN-F) ① .Power cord 5×4.0 mm (H07RN-F) ② .Power cord 3×1.0 mm (H05VV-F) ③ .Communication Cords 2×0.75 mm (H05RN-F) ①...

  • Page 55: Test Operation

    Cassette Type Air Conditioner 11 Test operation 11.1 Prepare for test Do not turn on the power switch before all installation is finished. ◆ Connect wires correctly and firmly. ◆ Open the check valve. ◆ Remove all dust. ◆ 11.2 Testing Turn on the power switch and press ON/OFF button.

  • Page 56: Error Display

    Cassette Type Air Conditioner Note to the installer: B e sure to instruct the customer how to operate the system and show him/her the attached ① . operation manual. B e sure the electric supply that user applies is beyond the bounds of tolerances (+/-10%, ②...

  • Page 57: Appendix

    Cassette Type Air Conditioner 3). Running Indicating Lamp (red): it flashes when the unit is on and goes out when the unit is off. Table 11.4 It flashes when an error about the indoor unit occurs: It flashes once when the communication error occurs. It flashes twice when the water overflow error occurs.

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