Page 2 - FEATURES; ) Self-Diagnostic Feature Indicates Faults Instantly
OC246-2 1 FEATURES 1. SPACE-SAVING CENTRALLY LOCATED CEILING RECESSED INSTALLATION 2. 4-WAY AIR FLOW SYSTEM This series allows you to select from 2, 3, and 4 way air flow directions according to your requirement. As a result, you getsuperb flexibility in choosing a configuration that gives you maxim...
Page 3 - NITROGEN GAS IS CHARGED TO INDOOR UNIT.
OC246-3 get lla- S an - F. m- ro- ed elf- ost en, ire 7. REDI-CHARGED REFRIGERANT SYSTEM The industry’s first redi-charge refrigerant system. There is no need to adjust the amount of refrigerant to match the piping length on-site unless lines exceed 100feet. You will see a major reduction in install...
Page 4 - PART NAMES AND FUNCTIONS; Operation buttons; FILTER button; CHECK-TEST RUN button; Cau
OC246-4 ● ● 2 PART NAMES AND FUNCTIONS On the controls are set, the same operation mode can be repeated by simply pressing the ON/OFF button. ● ● Operation buttons ● ● Remote controller Auto Air Swing Vane Disperses airflow up and down and adjusts the angle of airflow direction. Grille Filter Remove...
Page 5 - Display; le; Caution; TEMP button do not operate.
OC246-5 ● ● Display le TIMER OFF TIMER CHECK SET TEMP. DRY COOL FAN CLOCK AUTO AUTO START STOP MODE TIMER ON/OFF CLOCK/TIMER FAN SPEED AIR DISCHARGE FILTER CHECK TEST RUN AIR SWEEP SET TEMP. TIMER SET F FAN SPEED SWING AUTO RETURN REMOTE CONTROLLER PAR-JC240KUS Operation lamp This lamp lights during...
Page 6 - SPECIFICATIONS; CO
4 OC246-6 3 SPECIFICATIONS 2.0 1.2 10-3/16 Capacity Moisture removal Power Consumption EER SEER INDOOR UNIT MODELS External finish Power supply Max.fuse size (time delay) Min.ampacity Fan motor Airflow Hi-Lo Sound level Hi-Lo Unit drain pipe O.D. Dimensions Weight External finish(GRILLE) Dimensions ...
Page 7 - DATA; COOLING CAPACITY
OC246-7 DATA 4 Models Indoor air Outdoor intake air DB temperature( - F) PL18AK 71 67 63 62.5 60 59 71 67 63 62.5 60 59 71 67 63 62.5 60 59 71 67 63 62.5 60 59 71 67 63 62.5 60 59 71 67 63 62.5 60 59 TC 14.9 13.9 13.0 12.9 12.4 12.2 21.9 20.5 19.2 19.0 18.3 18.0 28.5 26.8 25.1 24.8 23.8 23.4 36.9 34...
Page 8 - NOTES : A point on the curve shows the reference point.; PL12AK COOLING CAPACITY
OC246-8 N 3 SHF=0.81 T otal po w er consumption (kW) T otal capacity (x10 3 Btu/h) Outdoor intake air DB temperature ( F) 36 30 24 18 12 3.0 2.5 2.0 1.5 63 67 71 63 67 71 0 23 32 35 45 55 65(67) 75 85 95 105 115 Indoor intake air WB temperature ( F) Indoor intake air WB temperature ( F) 2. PERFORMAN...
Page 9 - PL36AK COOLING CAPACITY
OC246-9 NOTES : A point on the curve shows the reference point. PL36AK COOLING CAPACITY PL42AK COOLING CAPACITY SHF=0.72 T otal po w er consumption (kW) T otal capacity (x10 3 Btu/h) Outdoor intake air DB temperature ( F) 48 42 36 30 4.0 3.5 3.0 2.5 63 67 71 63 67 71 0 23 32 35 45 55 65(67) 75 85 95...
Page 10 - CONDENSING PRESSURE AND SUCTION PRESSURE; COOLING MODE
DaAirA (p <P OC246-10 350 340 330 320 310 300 290 280 270 260 250 240 230 220 210 200 190 180 170 160 150 (psi.G) Condensing pressure 30 40 50 60 70 80 90 100 110 Outdoor ambient temperature DB( F) Indoor DB temperature( F) 86 80 75 70 100 90 80 70 60 50 40 30 20 (psi.G) Suction pressure 30 40 50...
Page 13 - STANDARD OPERATION DATA
OC246-13 4. STANDARD OPERATION DATA 750 750 750 750 760 760 840 840 Capacity SHF Input INDOOR UNIT MODEL Power supply (V, phase, Hz) Input Fan current OUTDOOR UNIT MODEL Power supply (V, phase, Hz) Input Comp. current Fan current Condensing pressure Suction pressure Discharge temp. Condensing temp. ...
Page 14 - NOISE CRITERION CURVES; air is blown out horizontally from the unit at the High fan setting.
OC246-14 P 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE NC-60 NC-50 NC-40 NC-30 NC-20 NC-70 OCT A VE B AND SOUND PRESSURE LEVEL, dB re 0.002 MICR O B A R BAND CENTER FREQUENCIES, Hz PL12AK Hi Lo 32 SPL(dB) 27 LINE NOTCH 7. NOISE ...
Page 15 - UNIT; Ambient temperature 80 ̊F
OC246-15 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE NC-60 NC-50 NC-40 NC-30 NC-20 NC-70 OCT A VE B AND SOUND PRESSURE LEVEL, dB re 0.002 MICR O B A R BAND CENTER FREQUENCIES, Hz PL24AK Hi NOTCH Lo 41 SPL(dB) 33 LINE 90 80 70 60...
Page 16 - OUTLINES AND DIMENSIONS
OC246-16 5 OUTLINES AND DIMENSIONS 2.R PL 6 PL Air outlet hole Vane motor Auto vane Drain hole Grille Drain pipe VP-25connection (O.D. { 1-1/4) Branch duct hole (Cut out hole) Ceiling surface Suspension bolt pitch Ceiling hole Branch duct hole Suspension bolt pitch Ceiling hole Air outlet hole Air i...
Page 17 - Remote controller; REFRIGERANT SYSTEM DIAGRAM; ch
OC246-17 Unit : inch 2.Remote controller FILTER CHECK MODE TEST RUN TIMER OFF TIMER CHECK SET TEMP. CLOCK AUTO AUTO START STOP SWING FAN SPEED 5-1/8 4-3/4 3/4 3/32 23/32 AUTO RETURN FAN Indoor coil thermistor RT2 Distributor Refrigerant pipe (option) { 3/8" (with heat insulator) Refrigerant pipe...
Page 18 - MA; WIRING DIAGRAM
8 MA w 1 w 2 w 3 w 4 w 5 OC246-18 WIRING DIAGRAM 7 MODELS: PL12/18/24/30/36/42AK WIRING DIAGRAM GROUND POWER SUPPLY ~(1PHASE) AC115V 60Hz TB2 N L1 GR OFF ON OFF ON 1234 12345678910 12345 123 OFF ON 123456 1234 OFF 123456 ON ON OFF 12 24AK 18AK 12AK 30AK 42AK OFF ON 3 2 1 OFF ON 3 2 1 OFF ON 3 2 1 SW...
Page 20 - DR
OC246-20 COOL operation Initial COOLING NO NO NO NO NO YES YES YES YES YES YES NO YES YES YES YES YES YES YES YES YES YES YES NO NO NO NO YES NO NO NO NO NO NO NO NO NO w 8 w 9 Vane initial setting Vane 55 deg downward angle 70 deg downward angle Fan speed LOW Downward discharge 1 hour Vane setting ...
Page 21 - It is not possible to set the fan speed with the remote controller; DRY OPERATION
OC246-21 w 8—9 Refer to page OC246-20. w 12 When room temperature is 64°F or below, the compressor cannot operate.When room temperature rises over 64°F the compressor starts after a 3-minute time delay. w 13 Compressor ON time is decided by room temperature. Refer to page OC246-26~27. w 14 In dry op...
Page 22 - MICROPROCESSOR CONTROL; OUTLINE OF MICROPROCESSOR CONTROL; OUTPUT to indoor unit; Remote controller board; OUTPUT to remote controller; Indoor controller board; OUTPUT to outdoor unit; Remote controller
OC246-22 2. 2-1 (1) 1 3 T 2 T TTo 3 T 4 C Tco w NO T I A D C <C w 1 E 9 MICROPROCESSOR CONTROL ● Compressor and outdoor fan : ON-OFF. 1. OUTLINE OF MICROPROCESSOR CONTROL ● OFF-ON switching. ● COOL/DRY-FAN selector switching. ● Thermostat setting. ● TIMER mode selector-switching and Timer setting...
Page 23 - INDOOR UNIT CONTROL; Coil frost prevention; NOTE: Set temperature changes 2°F when the SET TEMP. button
OC246-23 2. INDOOR UNIT CONTROL 2-1 COOL operation (1) Compressor control 1 3-minute time delay To prevent overload, the compressor will not start within 3 minutes after stop. 2 The compressor runs when room temperature is higher than set temperature. The compressor stops when room temperature is eq...
Page 25 - (4) Detecting abnormalities in the outdoor unit; RANGE A
OC246-25 (4) Detecting abnormalities in the outdoor unit After the compressor has been continuously operated for 3 minutes, if the difference between the indoor coil temperatureand room temperature is out of RANGE C for 1 minute, the indoor fan speed will turn to LOW. Five minutes later, if the dif-...
Page 26 - NOTE: The set temperature changes 2°F when the SET TEMP.
(2) (3) (4) OC246-26 <DRY operation time chart> Minimum 3 minutes w 1 ON Thermostat Indoor fan Auto vane Drain pump Compressor ON ON DRY MODE DRY MODE ON OFF OFF ON OFF 3 minutes OFF OFF Operation starts by P O W E R b u t t o n ON. Operation stops by P O W E R b u t t o n OFF. Room temperatur...
Page 28 - SWING; -3 Auto vane control
2-4WIR 2-5<B ● A c ● U a AttDo OC246-28 <How to operate>To change the air flow direction, press AIR DISCHARGE button. 1 30° 2 45° 3 55° 4 5 70° SWING COOL/DRY operation At the start-up of COOL or DRY operation, the airflow direction in automatically set to 30°. After, it can be changed toan...
Page 30 - -6 Emergency operation
(2) 2-7 1. O(1) (2) 2. O(1) OC246-30 (1) Indoor coil temperature code During the test run, the indoor coil temperature code from 1 to 15 is displayed on the remote controller instead of roomtemperature. The code should fall with the lapse of time in normal COOL operation. (2) Trouble during test run...
Page 31 - -7 Dip switch functions; Each figure shows the initial factory setting.
OC246-31 (2) SW2 (Address selector) 1 2 3 4 5 6 ONOFF Used in setting the unit-address for group control.For further information,refer to page 46. 2-7 Dip switch functions Each figure shows the initial factory setting. 1. On remote controller board(1) SW17(Address selector) SW17-1~6) For address set...
Page 32 - ON: Auto vane angle 25; Fan motor max. rotational frequency; Voltage
PL12AK OC246-32 (3) SW3 (Emergency operation switch) 1 2 Normal operation ONOFF 1 2 For emergency cooling ONOFF (4) SW5 (Model selector) 1 2 3 4 ONOFF SW5-1) Not yet usedSW5-2) Leave this switch as it is.SW5-3) OFF:Auto vane angle 30 - → 45 - → 55 - → 70 - ON: Auto vane angle 25 - → 40 - → 55 - → 70...
Page 33 - TROUBLESHOOTING; TROUBLES IN TEST RUN
OC246-33 TROUBLESHOOTING 10 The display “CENTRALLYCONTROLLED” on remotecontroller does not disap-pear. 1) Wrong address setting of remote con- troller/indoor controller board. 2) Timer adapter is connected to the remote controller. 3) Signal transmission error between indoor unit and remote controll...
Page 36 - OTHER TROUBLES AND CAUSES; “CENTRALLY CONTROLLED” is displayed.
OC246-36 Vanes do not work. Vane motor does not work.Connector is poorly connected.Vane motor is poorly assembled.Indoor controller board is damaged. Unit stops after 5 to20 seconds operation Protection function is working. Air discharge displayis OFF and AIR DIS-CHARGE button doesnot operate. Indoo...
Page 39 - -WAY AIR FLOW SYSTEM; Placement of the air outlets; Blo
OC246-39 4-WAY AIR FLOW SYSTEM 11 1. Placement of the air outlets • For this grille, the blowout direction comes in 11 patterns. Also, by setting the dip switches (SW8-3, SW8-4) on the indoor board to the appropriate settings, you can adjust the air flowand speed. Select the settings from Table acco...
Page 40 - Fresh air intake amount & static pressure characteristics; How to read curves
OC246-40 Static pressure [in. W.G. O 10 -2 ] Air flow [CFM] 20 50 100 150 200 -20 -40 -60 -80 0 2 intakes 1 intake 2 intakes 1 intake Static pressure [in. W.G. O 10 -2 ] Air flow [CFM] 20 50 100 150 200 -20 -40 -60 0 Static pressure [in. W.G. O 10 -2 ] Air flow [CFM] 20 50 100 150 200 -20 -40 -60 -8...
Page 41 - Branch Duct Installation Procedure; ww
OC246-41 5. BRANCH DUCT(Installation at site) Discharge by branch duct becomes possible by installing a branch duce at site. Knockout holes on the wall panel of the indoorunit must be removed. Branch Duct Installation Procedure At the time of installation, use the duct holes (cut out) located at the...
Page 45 - SYSTEM CONTROL; VARIETY OF SYSTEM CONTROL FUNCTIONS
1 Group control with a singleremote controller(See page OC246-46.) OC246-45 Unit Remote control display board Remote controller Unit Unit Two remote controllers can be used to control either oneunit or a group of units. Units can then be controlled froma distance or at close range. Units operate acc...
Page 46 - GROUP CONTROL WITH A SINGLE REMOTE CONTROLLER; Figure 2; Figure 1
OC246-46 2. GROUP CONTROL WITH A SINGLE REMOTE CONTROLLER A maximum of 50 units can be started in order according to the dip switch settings 2-1 How to wire (1) Connect the remote controller to the double terminal block on the indoor controller board of the master unit (No.0 unit).(See Figure 1.) (2...
Page 47 - CONTROL USING TWO REMOTE CONTROLLERS; -2 Remote controller LCD indication; (1) The same indications always appear on both the; REMOTE ON-OFF AND INDIVIDUAL REMOTE CONTROLS; Figure 4; Figure 5
OC246-47 3. CONTROL USING TWO REMOTE CONTROLLERS Two remote controllers can be used to control either one unit or a group of units. Units operate according to the latest com-mand from either of the two remote controllers.Before operation, be sure to set one remote controller as the “main controller”...
Page 48 - -3 Switch function of remote ON-OFF switch
OC246-48 NOTE1 : Install the relay box where you can be serviced it easily.NOTE2 : For control circuit wiring, use a wire of No. 14 AWG or a control cable according to the power supply of control circuit. NOTE3 : When the power supply of the control circuit is 115V AC, ● Do not connect the control c...
Page 49 - MULTIPLE REMOTE CONTROL DISPLAY; How to wire; indoor controller board.; AUTO RESTART FUNCTION; TIMER OPERATION OR THE OPERATION BY AN EXTERNAL SIGNAL
OC246-49 6. MULTIPLE REMOTE CONTROL DISPLAY You can control several units with a multiple remote control display, bywiring an optional multiple display adapter (PAC-SA88HA-E) with relaysand lamps on the market. How to wire (1) Connect the multiple display adapter to the connector CN51 on the indoor ...
Page 50 - DISASSEMBLY PROCEDURE; OPERATING PROCEDURE; Removing the air intake grille; Photo 2; Removing the room temperature thermistor; Photo 1
OC246-50 DISASSEMBLY PROCEDURE 13 OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS 1. Removing the air intake grille (1) Slide the knob of air intake grille to the direction of the arrow 1 to open the air intake grille. (2) Remove the string hook from the panel to pretend the grille from dropping. (3) S...
Page 51 - Removing the pipe temperature thermistor; Photo 6; Remove the fan motor; Photo 3; Removing the drain pan
OC246-51 OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS 5. Removing the pipe temperature thermistor (1) Remove the bell mouth.(See photo 1)(2) Remove the electrical box.(See photo 2)(3) Remove the turbo fan.(4) Remove the screw of the service panel.(5) Remove the service panel.(6) Remove the pipe temp...
Page 52 - Removing the heat exchanger; Photo 7
OC246-52 OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS 9. Removing the heat exchanger (1) Remove the panel. (See photo 5)(2) Remove the bell mouth. (See photo 1)(3) Remove the electrical box. (See photo 2)(4) Remove the drain pan. (See photo 6)(5) Remove the turbo fan. (See photo 3)(6) Remove the 3 s...
Page 53 - PARTS LIST
OC246-53 14 PARTS LIST PANEL PARTSPL12AKPL18AK PL24AK PL30AK PL36AK PL42AK No. Parts No. Parts Name Specification Q'ty / set PL 12 , 18 , 24 , 30 , 36 , 42 AK Remarks (Drawing No.) Wiring Diagram Symbol Recom- mended Q'ty Unit Amount Price 1 2 3 4 5 6 7 8 9 10 11 12 13 14 AIR OUTLET GRILLE VANE ASSY...
Page 56 - OPTIONAL PARTS; -1 Program timer specifications
OC246-56 OPTIONAL PARTS 15 Note 1. The refrigerant pipes and the indoor unit contain a nitrogen holding charge which must be removed by evacuation. <Piping connection procedures>See that ball valve on outdoor unit is fully shut (unit is shipped with valve shut). Remove caps from piping and uni...
Page 57 - 4hour ON/OFF timer on the remote controller will not operate.
OC246-57 SET/MONITOR SET S M T W T F S MONITOR PROGRAM TIMER PAC-SC32PTA TODAY ON WEEKLY SETTING OFF ON SET BACK OFF CLOCK DAILY TIMER SET BACK SET BACK DAILY SETTING 12 15 18 21 24 0 3 6 12 15 FILTER CHECK MODE TEST RUN Use 5-wire cable 2-wire cable Connect to CN1 Connect to CN1 4 Connect to indoor...
Page 58 - MULTIPLE REMOTE CONTROLLER ADAPTER; HIGH EFFICIENCY FILTER ELEMENT; Applicable Model
OC246-58 1 2 3 4 5 BRNREDORNYLWGRN 4. MULTIPLE REMOTE CONTROLLER ADAPTER This adapter is needed for remote indication (operation/check). Adapter connection is described on page 49. Part No. PAC-SA88HA-E Part No. Applicable Model PAC-SG03TM-E PL12/18/24/30/36/42AK Part No. Applicable Model PAC-SG01KF...
Page 60 - 400 Lawrenceville Suwanee Road; Specifications are subject to change without notice.
3400 Lawrenceville Suwanee Road ● Suwanee, Georgia 30024 Toll Free: 800-433-4822 ● Toll Free Fax: 800-889-9904 www.mrslim.com Specifications are subject to change without notice.
