Page 2 - FEATURES; Models; Indoor unit; NEW MATERIALS FOR BETTER OIL RESISTANCE
OC277-2 1 FEATURES Models Cooling capacity / Heating capacity SEER PCH24GK 24,000 / 27,000 (35,500) Btu/h 10.3 PCH30GK 30,000 / 33,000 (42,500) Btu/h 10.0 PCH36GK 35,400 / 38,000 (47,500) Btu/h 10.3 PCH42GK 42,000 / 45,000 (52,500) Btu/h 10.3 MicroprocessorRemote controller FILTER CHECK MODE TEST RU...
Page 3 - Removed the knockout work by separating the piping; EASY MAINTENANCE NO MAINTENANCE NECESSARY FOR 2500 HOURS
OC277-3 7. STABLE COOLING EVEN AT OUTDOOR TEMPERATURES AS LOW AS 23˚F MAKES YEAR-ROUND AIR-CONDITIONING POSSIBLE The microprocessor automatically adjusts fan speed in accordance with outdoor temperature to maintain the coolant at aneven condensing temperature. The result is smooth, efficient cooling...
Page 4 - PART NAMES AND FUNCTIONS
OC277-4 2 PART NAMES AND FUNCTIONS ● Indoor (Main) Unit Air outlet Intake grille Air intake Left/right guide vanes Change the direction of airflowfrom the horizontal blower. Long-life fillter Removes dust and foreigh matter from air coming inthrough the grille (Recommended cleaning interval :Approx,...
Page 5 - Remote controller operation buttons; FILTER button; Remote controller
OC277-5 Remote controller operation buttons TIMER OFF TIMER CHECK SET TEMP. DRY COOLAUTO HEAT 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 FANSPEED AUTO RETURN REMOTE CONTROLLER FILTER button This resets the fi...
Page 6 - Caution; Remote controller display
OC277-6 TIMER OFF TIMER CHECK SET TEMP. DRY COOLAUTO HEAT 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 FANSPEED AUTO RETURN REMOTE CONTROLLER Operation lamp This lamp lights during operation,goes off when the u...
Page 7 - SPECIFICATIONS
OC277-7 SPECIFICATIONS 3 Capacity Moisture removal PowerConsumption EERSEERHSPF COP INDOOR UNIT MODELSExternal finishPower supplyMax.fuse size (time delay)Min.ampacityFan motorBooster heater Airflow Hi-Lo Sound level Hi-LoUnit drain pipe O.D. (On a local side) Dimensions WeightOUTDOOR UNIT MODELSExt...
Page 8 - DATA
OC277-8 4 DATA Models Indoor air Outdoor intake air D.B. temperature (˚F) PCH24GK 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 28.5 26.8 25.1 24.8 23.8 23.4 35.7 33.4 31.3 31.0 29.8 29.3 42.1 39.5 37.0 36.6 35.2 34.6 50.0 46.8 43.8 43.4 41.7 41.0 SHC 18.6 21.1 2...
Page 10 - NOTES : A point on the curve shows the reference point.; PCH24GK COOLING CAPACITY
OC277-10 T otal power consumption (kW) T otal capacity (x10 3 Btu/h) Outdoor intake air DB temperature ( F) 42 36 30 24 4.0 3.5 3.0 2.5 2.0 63 67 71 63 67 71 SHF=0.84 32 35 45 55 65(67) 75 85 95 105 115 Indoor intake air W.B. temperature ( F) Indoor intake air W.B. temperature ( F) T otal power cons...
Page 11 - PCH36GK COOLING CAPACITY
OC277-11 NOTES : A point on the curve shows the reference point. PCH36GK COOLING CAPACITY PCH36GK HEATING CAPACITY T otal power consumption (kW) T otal capacity (x10 3 Btu/h) Outdoor intake air DB temperature ( F) 48 42 36 30 4.5 4.0 3.5 2.5 3.0 63 67 71 63 67 71 SHF=0.80 32 35 45 55 65(67) 75 85 95...
Page 12 - CONDENSING PRESSURE AND SUCTION PRESSURE
OC277-12 3. CONDENSING PRESSURE AND SUCTION PRESSURE Data is based on the condition under indoor humidity 50%.Air flow should be set at HI.A point on the curve shows the reference point. < Cooling mode> Data is based on the condition under outdoor humidity 75%.A point on the curve shows the re...
Page 16 - STANDARD OPERATION DATA; Electrical circuit
OC277-16 4. STANDARD OPERATION DATA Models Item Electrical circuit Refrigerant circuit Indoor side Outdoor side Voltage Frequency Total input Indoor fan current Booster heater current Outdoor fan current Comp. current Condensing pressure Suction pressure Discharge temperature Condensing temperature ...
Page 17 - OUTLET AIR SPEED AND COVERAGE RANGE
OC277-17 Condition Standard temperature Maximum temperature Minimum temperature Maximum humidity Standard temperature Maximum temperature Minimum temperature 80 95 67 80 70 80 70 67 71 57 75 60 67 60 95 115 23 80 47 75 17 75 — — 75 43 65 15 Function Cooling Heating Model Airflow (CFM) Air speed (ft/...
Page 18 - NOISE CRITERION CURVES; Lo; Lo
OC277-18 8. NOISE CRITERION CURVES 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 APPROXIMATETHRESHOLD OFHEARING FORCONTINUOUSNOISE NC-60 NC-50 NC-40 NC-30 NC-20 NC-70 OCT A VE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR BAND CENTER FREQUENCIES, Hz PCH24GK Hi Lo NOTCH 4842 SPL(d...
Page 19 - OUTLINES AND DIMENSIONS; Indoor unit PCH24GK
OC277-19 OUTLINES AND DIMENSIONS 5 Indoor unit PCH24GK Unit:inch 9-1/32 2-3/4 Electrical box 2 7 9 Knock out hole for upper drain pipe arrangement 8 Knock out hole for fresh air intake 9 51-9/16 10-5/8 or more 11-13/16 or more 1/16 Less than 9-7/8 19-11/16 or more Less than 26-3/4 7-3/16 7-13/16 9-5...
Page 21 - REFRIGERANT SYSTEM DIAGRAM; Refrigerant flow
OC277-21 Unit : inch Remote controller FILTER CHECK MODE TEST RUN TIMER OFF TIMER CHECK SET TEMP. CLOCK AUTO AUTO START STOP SWING FANSPEED 5-1/8 4-3/4 3/4 3/32 23/32 AUTO RETURN REFRIGERANT SYSTEM DIAGRAM 6 Pipe temperaturethermistor / Liquid(RT2) Distributor ( { 0.126 O { 0.071 O 15.7) Restrictorv...
Page 22 - WIRING DIAGRAM
OC277-22 7 WIRING DIAGRAM MODEL PCH24/30/36/42GK WIRING DIAGRAM TRANSMISSION WIRESDC12V ZNR LED2 LED1 F2 F1 REDBLU L2 L1 POWER SUPPLY~(1PHASE)AC208/230V 60Hz TB2 WHT BLK POWERCNDK(WHT) 3 1 1 2 1 2 3 TRANS CNSK(RED) (DC13.1V) CN2S (WHT) P.B (AC208/230V) W.B CN2 CN1 ON OFF ON OFF SW17 87654321 8765432...
Page 23 - MAIN OPERATION
8 START Power circuit breaker Check SW ON twice Operation SW ON “OFF” timer “ON” timer STOP Set time complete Set time complete 1 NO NO NO NO NO NO NO NO NO NO NO NO YES YES YES YES YES YES YES YES YES YES YES YES w 1 w 2 w 3 w 4 w 5 w 7 w 6 PROTECTION DEVICE SELF HOLD RELEASE Remote controller indi...
Page 24 - COOLING OPERATION; during auto vane SWING, the auto vane will continue to swing.
OC277-24 COOL operation Four-way valve/OFF Initial COOLING NO 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 40 deg downward angle 60 deg downward angle Fan speed LOW Downward discharg...
Page 25 - DRY OPERATION
OC277-25 w 8 ~ 9 Refer to page OC277-24. 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 OC277-33. w 14 In dry op...
Page 26 - HEATING OPERATION; ) Until Low airflow is set while hot adjustment
OC277-26 Heat operation Initial HEATING Vane setting notch Vane initial setting Defrosting Heating area Defrost release Defrost 30 min. elaspe Outdoor unit trouble Four-way valve ON Hot adjust in process Compressor ON Compressor thermostat ON Allowance cancel Indoor piping -5 ° F or lower Outdoor un...
Page 27 - MICROPROCESSOR CONTROL; OUTLINE OF MICROPROCESSOR CONTROL; OUTPUT to outdoor unit
OC277-27 MICROPROCESSOR CONTROL 9 ● Compressor and outdoor fan : ON-OFF ● Operation mode change :COOL-HEAT. 1.OUTLINE OF MICROPROCESSOR CONTROL ● OFF-ON switching. ● COOL/DRY-AUTO-HEAT selector switching. ● Thermostat setting. ● TIMER mode selector-switching and Timer setting. ● HIGH-LOW fan speed s...
Page 28 - INDOOR UNIT CONTROL; Coil frost prevention; NOTE: Set temperature changes 2°F when the SET TEMP. button
OC277-28 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 31 - (4) Detecting abnormalities in the outdoor unit; RANGE A
OC277-31 (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 32 - NOTE: The set temperature changes 2°F when the SET TEMP.
OC277-32 <DRY operation time chart> Minimum 3 minutes w 1 ON Thermostat Indoor fan Auto vane Booster heater Compressor ON DRY MODE DRY MODE ON ON OFF OFF ON OFF OFF OFF OFF Operation starts byP O W E R b u t t o nON. Operation stops byP O W E R b u t t o nOFF. Room temperaturebecomes equal tos...
Page 37 - When AUTO operation starts after unit OFF.; In case of the wind baffle installed.; “AUTOMATIC” works to change by itself the operation
OC277-37 2-4 AUTO operation (Automatic COOL/HEAT change over operation) (1) Initial mode 1 When AUTO operation starts after unit OFF. ● If the room temperature is higher than the set temperature, operation starts in COOL mode. ● If the room temperature is equal to or lower than the set temperature, ...
Page 38 - -5 Auto vane control
OC277-38 <How to operate>To change the air flow direction, press AIR DISCHARGE button. 1 Horizontal 2 20° 3 40° 4 5 60° SWING (1) COOL/DRY operation At the start-up of COOL or DRY operation, the airflow direction in automatically set to horizontal. After, it can be changedto another direction ...
Page 40 - -8 Emergency operation
OC277-40 (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, and should rise in normal HEAToperation. (2) Trouble du...
Page 41 - -9 Dip switch functions; Each figure shows the initial factory setting.
OC277-41 2-9 Dip switch functions Each figure shows the initial factory setting. (1). On remote controller board 1. SW17(Address selector) SW17-1~6) For address settingSW17-7) When two remote controllers are used,this switch sets the controller function. OFF:The remote controller is set as a main co...
Page 42 - ON: For models with cooling only; Fan motor max. rotational frequency; Voltage
OC277-42 3. SW3 (Emergency operation switch) 1 2 Normal operation ONOFF 1 2 For emergency cooling ONOFF 1 2 For emergency heating ONOFF 4. SW5 (Model selector) 1 2 3 4 ONOFF SW5-1) Not for use.SW5-2) OFF:For models with heat pump ON: For models with cooling only SW5-3) Not for use.SW5-4) Not for use...
Page 43 - TROUBLE SHOOTING; REMOTE CONTROLLER DISPLAY ABNORMALITY
OC277-43 TROUBLE SHOOTING 10 Cause Display abnormality Check points The display “centrally con-trolled” on remote con-troller does not disappear. 1) Wrong address setting of remote con- troller/indoor controller board. 2) Timer adapter is connected to the remote controller. 3) Signal transmission er...
Page 46 - WRONG WIRING ON SITE; -1 Between remote controller and indoor unit
OC277-46 3. WRONG WIRING ON SITE 3-1 Between remote controller and indoor unit If the wire is disconnected between the remote controller and the indoor unit, nothing is displayed on the remote controllerwhen the POWER button is pressed. The beep sound will also not be heard. 3-2 Phenomenon due to wr...
Page 47 - OTHER TROUBLES AND CAUSES; “CENTRALLY CONTROLLED” is displayed.
OC277-47 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 48 - How to check the parts
OC277-48 5. How to check the parts Parts name Check points Disconnect the connector then measure the resistance using a tester.(Ambient temperature 50 ° F to 86 ° F) Measure the resistance between the terminals using a tester.(Ambient temperature 77 ° F) Vane motor (MV) (Refer to the next page for a...
Page 49 - Thermistor R
OC277-49 0 10 20 30 40 50 -4 14 32 50 68 86 104 122 < Thermistor for lower temperature > Temperature ( ° F) Resistance (K " ) <Thermistor Characteristic graph> Room temperature thermistor(RT1)Liquid pipe thermistor(RT2) Thermistor R 0 =15k ' ± 3% Fixed number of B=3480k ' ± 2% Rt=15e...
Page 50 - SYSTEM CONTROL; VARIETY OF SYSTEM CONTROL FUNCTIONS
OC277-50 11 SYSTEM CONTROL 1. VARIETY OF SYSTEM CONTROL FUNCTIONS Unit Remote controldisplay board Remotecontroller 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 according tothe...
Page 51 - GROUP CONTROL WITH A SINGLE REMOTE CONTROLLER; Figure 2; Figure 1
OC277-51 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 52 - 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; Figure 6
OC277-52 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 53 - -3 Switch function of remote ON-OFF switch
OC277-53 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 208/230V AC, ● Do not connect the contr...
Page 54 - MULTIPLE REMOTE CONTROL DISPLAY; indoor controller board.; AUTO RESTART FUNCTION; Indoor controller board; TIMER OPERATION OR THE OPERATION BY AN EXTERNAL SIGNAL
OC277-54 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 c...
Page 55 - DISASSEMBLY PROCEDURE; Removing the air intake grille; backward to open the intake grille.; OPERATING PROCEDURE; Removing the electrical box; remove the electrical cover.
OC277-55 DISASSEMBLY PROCEDURE 12 1. Removing the air intake grille (1) Slide the intake grille holding knobs (at two locations) backward to open the intake grille. (2) When the intake grille left open, push the stoppers on the rear hinges (at two locations) to pull out the intake grille. OPERATING ...
Page 56 - Figure 3; Removing the fan motor; upper side of the casing.; Removing the side panel; side panel by sliding the panel to the front.; Photo 2
OC277-56 Figure 3 OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS 3. Removing the fan motor (1) Remove the intake grille.(2) Disconnect the fan motor connector.(3) Remove the screw for removing the motor support at both left and right side. (4) Loosen the set screws at the fan motor side of the con- ne...
Page 57 - Removing the vane motor; Photo 4
OC277-57 OPERATING PROCEDURE PHOTOS 6. Removing the vane motor (1) Remove the air intake grille.(2) Remove the left side panel.(3) Remove the relay connector of vane motor.(4) Remove the electrical box.(5) Remove the screws of vane motor, then remove vane motor. (Note) Connect the lead wires and con...
Page 58 - Removing the drain pan; and left side drain pan.; Removing the guide vane; Photo 8
OC277-58 OPERATING PROCEDURE PHOTOS 9. Removing the drain pan (1) Remove the air intake grille.(2) Remove the beam.(3) Remove the side panel (right and left).(4) Remove the under panel. Remove the screws of the right and left side drain pan. (5) Remove the insulation in center of the drain pan, and ...
Page 60 - PARTS LIST
OC277-60 13 PARTS LIST STRUCTURAL PARTPCH24GK 22 20 19 18 17 15 14 13 12 16 11 10 9 8 7 6 4 3 2 1 5 21 OC277--2.qxp 1.12.14 1:43 PM Page 60
Page 61 - Part numbers that are circled are not shown in the illustration.
OC277-61 No. Parts No. Parts Name Specifications PCH 24GK Wiring Diagram Symbol Recom- mended Q'ty Unit Amount Q'ty / set Price LEFT SIDE PANEL LEFT LEG SIDE PLATE-L. REAR PANEL GRILLE HINGE GRILLE CATCH GRILLE ASSY FILTER UNDER PANEL WIRELESS BOARD CASE SIDE PLATE-R. RIGHT SIDE PANEL RIGHT LEG SERV...
Page 64 - Part number that is circled is not shown in the illustration.
OC277-64 No. Parts No. Parts Name Specifications PCH 24GK Wiring Diagram Symbol Recom- mended Q'ty Unit Amount Q'ty / set Price 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 PIECE (MOTOR) MOTOR LEG FAN MOTOR SHAFT JOINT DRAIN PLUG SIROCCO FAN SHAFT DRAIN PAN ROOM TEMPERATURE THERMISTOR SLEEVE B...
Page 67 - OPTIONAL PARTS; -1 Program timer specifications
OC277-67 OPTIONAL PARTS 14 1-2 Feature of program timer(1) Daily timer function Daily timer can be set in 30 minutes units for up to 24 hours.Each unit can be set for unit ON, unit OFF, or setback operation. (2) Setback operation (PAC-SC32PTA) Set back operation is useful for reducing running costse...
Page 68 - -4 Names and functions; WEEKLY TIMER SETTING DISPLAY; CURRENT TIME DISPLAY
OC277-68 1-4 Names and functions <PAC-SC32PTA> WEEKLY TIMER SETTING DISPLAY Sets timer for a week. 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 CURRENT TI...
Page 69 - Pipe length; MULTIPLE REMOTE CONTROLLER ADAPTER
OC277-69 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 unit andmake flare co...
Page 70 - 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.
