CENTRAL SPLIT AIR CONDITIONER Technical & Service Manual v1.0 HIGH EFFICENCY AIR HANDLER Models: • DR024GHFD18HT2 • DR036GHFD18HT2 • DR048GHFD18HT2 • DR060GHFD18HT2 - R-410A REFRIGERANT - 208~230 V, 1 Phase, 60 Hz - 18 SEER IMPORTANT NOTICE: Thank you very much for purchasing this Air Conditioner. Please read this manual carefully before installing or operating your new air conditioning system. Be sure to save this manual for future reference.
SAFETY SUMMARY IMPORTANT NOTICE ● We pursue a policy of continuing improvement in design and performance of products. The right is therefore reserved to vary specifications without notice. ● We cannot anticipate every possible circumstance that might involve a potential hazard. ● This air conditioner is designed for standard air conditioning only. Do not use this air conditioner for other purposes such as drying clothes, refrigerating foods or for any other cooling or heating process.
● If circuit breaker or fuse is often activated, stop the system and contact your service contractor. ● Check that the ground wire is securely connected. If the unit is not correctly grounded, it will lead to electric shock. Do not connect the ground wiring to gas piping, water piping, lightning conductor or ground wiring for telephone. ● Before performing any brazing work, check to ensure that there is no flammable material around when using refrigerant.
Table of Contents 1. General ..................................................................................................................................................1 1.1 Features ........................................................................................................................................1 1.2 Product lineup ...............................................................................................................................1 1.3 Nomenclature ...................
1.�GENERAL 1. General 1.1 Features Being equipped with TXV metering, supporting cooling and heating. Multi-speed ECM blower motor Selecting electric heater kits within available models. Up to 0.8W.C ESP. Being in accordance with ETL AHRI. 1.2 Product Lineup Model (Btu/h) Type 24K 36K 48K 60K Air Handler : available model 1.
1. GENERAL 1.4 Unit Installation 1:1 system is the only compatible combination. (Only one indoor unit can be connected with one outdoor unit.) 1.5 Working Range 24K Power Supply Working Voltage 198V ~ 253V Voltage Imbalance Within a 3% deviation from each voltage at the main terminal of outdoor unit Starting Voltage Higher than 85% of the Rated Voltage Storage Condition Temperature -13~140℉ (-25~60℃) Humidity 30%~80% 1.
2.�SPECIFICATIONS 2. Specifications Indoor model 24K Type Power Supply Cooling Heating Capacity Capacity (min.-max.) Capacity (min.-max.) Input 48K 60K US Duct US Duct US Duct US Duct V/ph/Hz 208~230/1/60 208~230/1/60 208~230/1/60 208~230/1/60 Btu/h 24000 36000 48000 56000 Btu/h 6700-26000 11800-36800 18300-52000 18300-59400 W 2227-7327 2814-10697 5363-15240 5363-17409 W 2200 3770 4690 6560 Current A 9.6 16.5 21.0 26.8 SEER1 Btu/(W.h) 18 18 17.5 17.
2.�SPECIFICATIONS Indoor model Indoor Coil Dimension(W×H×D) in 24K 36K 48K 60K 2(17-1/2×16-1/2× 2-1/8) 2(17-1/2×16-1/2×2-1 /8) 2 (20×21-1/2×211/16) 2 (20×21-1/2×211/16) Number of Circuits 8 8 12 12 Rated In.W.C. (Pa) 0.18（45） 0.228（57） 0.276（70） 0.276（70） Range In.W.C. (Pa) 0-0.8（0-200） 0-0.8（0-200） 0-0.8（0-200） 0-0.
3. OUTLINES AND DIMENSIONS 3. Outlines and Dimensions 24K/36K Unit : in.
3. OUTLINES AND DIMENSIONS 48K/60K Unit : in.
4.�ELECTRICAL DATA 4. Electrical Data Power Supply ELB Applicable Voltage Indoor Unit Voltage (V) PH Frequency (Hz) Umin. (V) Umax. (V) Nominal Current (A) Nominal Sensitive Current (mA) 30 24K/36K/ 48K/60K 208/230 1 60 198 253 15 30 NOTE: 1. The above compressor data is based on 100% capacity combination of indoor units at the rated operating frequency. 2. This data is based on the same conditions as the nominal heating and cooling capacities. 3.
5.� BLOWER DATA 5. Blower Data Airflow performance data is based on cooling performance with a coil and no filter in place. Check the performance table for appropriate unit size selection. External static pressure should stay within the minimum and maximum limits shown in the table below in order to ensure proper cooling, heating , and electric heating operation. Air Flow Table Air Handler Model External Static Pressure in.H2O[KPa] Motor Speed 0[0] Tap(1) -Default Setting Tap(2) 24K Tap(3) Tap(4) 0.1[0.
5.� BLOWER DATA Air Flow Table Air Handler Model External Static Pressure in.H2O[KPa] Motor Speed 0[0] Tap(1) -Default Setting Tap(2) 48K Tap(3) Tap(4) 0.1[0.02] 0.18[0.045] 0.3[0.07] 0.4[0.1] 0.5[0.12] 0.6[0.15] 0.7[0.17] 0.8[0.
6.�SOUND PRESSURE DATA 6. Sound Pressure Data Indoor Unit Model 24K Model 36K Test Condition 3.28ft. (1.0m) in front of the outlet of the wind tunnel; 3.28ft. (1.0m) above the bottom of the unit. Test Condition 3.28ft. (1.0m) in front of the outlet of the wind tunnel; 3.28ft. (1.0m) above the bottom of the unit.
7.�REFRIGERANT CYCLE 7.
8.�WIRING DIAGRAM 8. Wiring Diagram 8.1 Electrical Wiring Diagram Electrical Wiring Diagram 2157413.B NOTES: 1. 2. 3. 4. 5. 6. Use copper wire (75℃ Min) only between disconnect switch and unit. To be wired in accordance with NEC and local codes. If any of the original wire supplied must be replaced, use the same or equivalent type. Connect R to R, G to G,etc. See Installation Instruction for details. Check airflow table to ensure appropriate operations. The EHK is optional.
8.�WIRING DIAGRAM 8.2 Control Board Picture 1 2 12 3 4 11 5 10 9 NO. 8 7 Description 6 NO.
8.�WIRING DIAGRAM 8.3 Common Wiring Wiring Diagram W1 B C R Y G Thermostat C B Y W SI G R C W1 SI Indoor Unit Outdoor Unit L1 L2 PE Power Supply (L1)(L2)( ) Power Terminal Panel Power Supply NOTE: (1) Do not connect dashed line when electric heater is not used. (2) Wiring must be performed according to wiring diagram that pasted on indoor unit.
9.�FIELD SETTING 9. Filed Setting Static Pressure Setting: DIP Switch S2 Setting ON OFF ON OFF ON OFF ON OFF Blower Speed Tap Fan Speed Select 2 Medium Low (Default setting) 0.18[0.045] 0.24[0.057] 0.28[0.07] 3 Medium 0.25[0.08] 0.4[0.1] 0.4[0.1] 4 Medium High 0.58[0.145] 0.58[0.145] 0.58[0.145] 5 High 0.8[0.2] 0.8[0.2] 0.8[0.2] Static Pressure (W.C.[kPa]) 48K/60K NOTE: Symbol " " indicates the position of the DIP switch. Symbol " " indicates any position of ON or OFF.
10.� CHECKING COMPONENTS 10. Checking Components 10.1 Check Refrigerant System TEST SYSTEM FLOW: Conditions: ① Compressor is running. The air condition should be installed in good ventilation. Tool: Pressure Gauge Technique: ① see ② feel ③ test See ----- Tube Defrost. Feel ----- The Difference between Tube’s Temperature. Test ----- Test Pressure. Cooling Mode NO Test system pressure. Is the low pressure normal at service part ? The pressure on the high side.
10.� CHECKING COMPONENTS Heating Mode Test system pressure. Is the high pressure normal at service part ? The pressure on the high side. Recharge refrigerant after air purging with the vacuum pump. Is the high pressure normal over again? The pressure on the low side. NO The system needs refrigerant. The service people must be charge refrigerant. Does the high pressure rise in heating mode? NO Remove the back panel."see"the capillary tube1 and capillary tube2.
10.� CHECKING COMPONENTS 10.2 Check Parts Unit 1. Indoor Unit Fan Motor Duct motor model 24K: ZWK702B006073 36K: ZWK702B500026 48K: ZKSD-560-8-50-14 60K: ZKSD-560-8-58 Test in resistance. TOOL: Multimeter. Test the resistance of the main winding. The indoor fan motor fails if the resistance of main winding is 0(short circuit)or∞（open circuit). Test in voltage TOOL: Multimeter. Insert screwdriver to rotate indoor fan motor slowly for 1 revolution or over, and measure voltage “YELLOW” and “GND” on motor.
11.� DISASSEMBL AND ASSEMBL FOR MOTOR 11. Disassembly and Assembly for Motor Indoor Unit 24K/36K/48K/60K Important: Before disassembly and assembly, make sure that the power to the system has been disconnected and verified as voltage free. Step Illustration Handling Instruction Use screwdriver to remove the electric box cover and unplug the motor cables in electric box. 1. Remove the top panel and unplug the motor cables. Use screwdriver to unscrew two bolts from the top of the unit. 2.
12.� HEATER KIT 12. Heater Kit (Optional) Electric Heat Kit Model Air Handler Model 21-4245-01 Electric MIN. Circuit Ampacity Heat (kW) 230VAC 208VAC MAX. Fuse or Breaker (HACR) Ampacity Fan Speed Tap 230VAC 208VAC 2 3 4 5 5 28.3 25.9 30 30 ● ● ● ● 7.5 40.7 37.2 45 40 ╳ ● ● ● 21-4245-03 10 53.2 48.5 60 50 ╳ ╳ ● ● 21-4245-01 5 29.8 27.4 30 30 ● ● ● ● 7.5 42.2 38.7 45 40 ╳ ● ● ● 10 54.7 49.
The design and specifications of this product are subject to change without prior notice as development continues. Consult with the sales agency or manufacturer for details. Refer to the equipment nameplate for all other applicable specifications. is a registered trademark of Parker Davis HVAC International, Inc. Parker Davis HVAC International, Inc. 3250 NW 107 Avenue, Doral, FL 33172 - USA Tel : (305) 513-4488 Fax : (305) 513-4499 E-mail : info@pdhvac.com Website : www.pdhvac.
