Pioneer AHU - Manuals

1 . GENERAL 1. General1.1 Features 1.2 Product lineup 1.3 Nomenclature 24K 36K 48K 60K Outdoor unit Model (Btu/h) Type : available model 360 DC inverter driven technologyWith 360 all DC inverter driven technology, realize the compressor driving direction the same with rotary direction. Optimize ener...

1 . GENERAL 1.4 Unit installation 1.5 Working range 1.6 Product appearance 1:1 system is the only compatible combination.(Only one indoor unit can be connected with one outdoor unit.) Power Supply Storage condition Temperature: -13~140 (-25~60 ℉ ℃ ) Humidity: 30%~80% Working Voltage Voltage Imbalanc...

3 . OUTLINES AND DIMENSIONS Unit : in.(mm) 6-1/8(155) 2-5/8(66) 4-1/8 (105) 37-3/8(950) 40-7/8（1038） 7-1/4(185) 22-7/8(580) 13-3/8(340) 16-1/4(414) 14-15/16(380) 13-9/16(344) 1-5/8(41) 2-3/4(70) 4-φ 5/8 (15 ) 3-1/2 (88) 33-1/ 8(840) 36K 6

4 . ELECTRICAL DATA 4. Electrical data Indoor Unit Power supply Applicable voltage ELB Voltage (V) PH Frequency ( Hz) Umin (V) Umax (V) Nominal Current (A) Nominal Sensitive Current (mA) 24K 208/230 1 60 198 253 25 30 36K 208/230 1 60 198 253 35 30 208/230 1 60 198 253 50 30 NOTE: 1. The above compr...

5 . CAPACITIES AND SELECTION DATA 5. Capacities and selection data5.1 Capacity characteristic charts The following charts show the characteristics of outdoor unit capacity, which corresponds with the operating ambient temperature of outdoor unit. Conditions: ① Pipe length / height difference: 25 ft. ...

5 . CAPACITIES AND SELECTION DATA Performance data (Cooling operation at rated frequency) 24K outdoor unit matches 18K indoor unit Airflow (CMF) Outdoor DB(°F) IWB (°F) 59 63 67 71 IDB (°F) 70 75 80 85 70 75 80 85 70 75 80 85 70 75 80 85 450 5 TC 14.0 14.1 14.4 14.6 14.4 14.6 14.7 14.9 15.4 15.5 15....

5 . CAPACITIES AND SELECTION DATA Airflow (CMF) Outdoor DB IWB (°F) 59 63 67 71 IDB (°F) 70 8 0 75 7 0 85 8 5 80 75 8 0 75 8 0 85 1760 5 TC 42.5 43.0 43.9 44.4 43.9 44.4 44.9 45.5 47.1 47.5 47.7 48.1 \ 56.3 56.7 57.6 S/T 0.99 1.00 1.00 1.00 0.61 0.83 1.00 1.00 0.39 0.57 0.73 0.90 \ 0.39 0.53 0.67 kW...

5 . CAPACITIES AND SELECTION DATA Airflow (CMF) Outdoor DB(°F) IWB (°F) 59 63 67 71 IDB (°F) 70 75 80 85 70 75 80 85 70 75 80 85 70 75 80 85 750 5 TC 16.0 16.1 16.5 16.7 16.5 16.7 16.9 17.0 17.7 17.8 17.9 18.0 \ 21.1 21.3 21.6 S/T 0.99 1.00 1.00 1.00 0.61 0.83 1.00 1.00 0.39 0.57 0.73 0.90 \ 0.39 0....

5 . CAPACITIES AND SELECTION DATA 5.2 Piping length correction factor The correction factor is based on the equivalent piping length in meters (EL) and the height difference between outdoor and indoor units in meters (H). H: Height difference between indoor unit and outdoor unit (m). • H>0: Posit...

5 . CAPACITIES AND SELECTION DATA The correction factor of height between indoor unit and outdoor unit Height difference 16ft (5m) 33ft (10m) 108ft (30m) Factor 0.01 0.02 0.025 To ensure correct unit selection, consider the farthest indoor unit. NOTE : 1. Above data is assuming that the height diffe...

7 . REFRIGERANT CYCLE 7. Refrigerant cycle Outdoor unit 24K Cooling cycle Heating cycle List of components 1 Compressor 9 2 10 3 1 1 4 1 2 5 1 3 6 8 Outdoor heat exchanger Coil temperature sensor Electronic expansion valve Pressure sensor Strainer One-way valve Stop valve (Gas) TXV Discharge tempera...

8 . WIRING DIAGRAM 8. Wiring diagram8.1 Electrical wiring diagram Electric wiring diagram 2150423.D 24K /36K DIP Switch Setting of Outdoor Unit Turn on the power before setting the DIP switch. Without turning on, the switches do not work and the content of the setting are invalid. Mark of " "...

8 . WIRING DIAGRAM Electric wiring diagram 2153502.D 48K /60K DIP Switch Setting of Outdoor Unit 1 2 1 2 3 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 M M M 1 2 1 2 3 3 1 2 1 2 3 3 1 2 1 2 M 1 2 1 2 IPM Board Filter Board COMPRESSOR POWER TERMINAL PANEL DRAINAGE PAN HEATER DRAINAGE PAN...

8.�WIRING DIAGRAM 8.2 Control board picture 24K/36 K Main control board 34 NO. Description NO. Description 1 Compressor 14 Crankcase Heater 2 DC Fan Motor 15 Communication Signal between IDU&ODU 3 EE PROM 16 AC Power Lin 4 Coil Temperature Sensor 17 AC Power Nin 5 Ambient Temperature Sensor 18 G...

8 . WIRING DIAGRAM 7 Segment display board (Checker board) NO. Description NO. Description 1 Computer/Checker to Outdoor Control Board 5 S2-Select Button 2 7-Segment Display 6 DIP Switch 3 S3-Decrease Button 4 S1-Increase Button 6 5 4 3 2 1 35

8 . WIRING DIAGRAM 1 2 3 4 5 6 7 11 10 9 8 Drive board 12 37 NO. Description NO. Description 1 DC Fan Drive r 7 Reactor L2 2 8 Compressor W 3 EE PROM 9 Compressor U 4 N in 10 Compressor V 5 L in 11 D C Fan 1 6 Reactor L1 1 2 D C Fan 2 Communication Between Main Control Board & IPM

8 . WIRING DIAGRAM Filter board 5 4 3 1 2 38 NO. Description NO. Description 1 N Out 4 L in 2 5 N in 3 L Out Communication Between Main Control Board&Filter Board

8 . WIRING DIAGRAM 8.3 Common wiring Recommended Wire Size Model (Btu/h) Power Supply ELB Power Source Cable Size Transmitting Cable Size Fuse or Circuit Breaker (A) Rated Current (A) Nominal Sensitive Current (mA) 24K 208/230V ~ /60Hz 25 30 3×12AWG 5×16AWG 25 36K 35 30 3×10AWG 5×16AWG 48K/60K 50 30...

9 . FIELD SETTING 9. Filed setting S4 DIP Switch Setting Factory Setting Factory Setting ON ON ON ON 1 1 1 2 2 2 3 3 3 4 4 4 ON ON OFF OFF OFF OFF OFF OFF Pump Down Switch Force Defrost Cooling Only S5 DIP Switch Setting Outdoor unit model Indoor unit connect 24K 18K 36K 30K 48K 42K 60K 48K DIP Swit...

9 . FIELD SETTING 7 segment display Introduction 24K/36K 7 segment display Switch 9.2 Running parameter query Query by 7 segment display Select Increase Decrease There are 3 buttons on the 7 segment board . 1) Select button: Select to display outdoor/indoor unit parameter. "P." -- Parameter ...

9 . FIELD SETTING Fault codes Compressor actual frequency Compressor driving frequency Compressor target frequency Compressor exhaust temperature (℃) Outdoor suction temperature (℃) Outdoor ambient temperature (℃) Outdoor coil temperature (℃) Outdoor defrosting temperature (℃) IPM module temperature...

9 . FIELD SETTING Parameters can be checked in the following table below. Parameter code Descriptions 0 Protection code or fault code P.1 Target frequency P.2 Driving frequency P.4 Outdoor EEV opening P.5 Outdoor EEV target opening P.6 Upper DC motor revolving speed P.8 AC Input voltage P.9 Current ...

10 . PIPING WORK AND REFRIGERANT CHARGE 10. Piping work and refrigerant charge10.1 MAX. length allowed Additional refrigerant charge 24K/36K: Additional refrigerant charge= (L-25) ft×0.38 oz/ft 48K/60K: Additional refrigerant charge= (L-25) ft×0.60 oz/ft 1) To avoid storing too much oil in the oil t...

10 . PIPING WORK AND REFRIGERANT CHARGE 10.3 Air tight test Completion of Ref. Piping Repairing of Leakage Part Check of Pressure Decrease Applying Nitrogen Gas Pass Procedure Do use nitrogen when performing air-tight test. Connect the gauge manifold using charging hoses with a nitrogen cylinder to ...

11 . INSTALLATION TOOLS AND INSTALLATION FLOW CHART 11. Installation tools and installation flow chart11.1 Necessary tools and instrument list for installation Necessary Tools and Instrument List for Installation No. Tool No. Tool No. Tool No. Tool 1 Handsaw 6 Copper Pipe Bender 11 Spanner 16 Leveler...

12 . CONTROL MODE 12. Control mode Control function 1. Cooling Anti-Freeze Protection The outdoor pressure sensor functions as real time temperature detector of evaporator. Itprevents the indoor unit evaporator temperature becoming too low. If the indoor coil temperatureis too low, the compressor wi...

13 . SENSOR PARAMETER 13. Sensor parameter 1.. The parameter of outdoor compressor discharge temperature sensor: (R0=187.25K±6.3% ； R100=3.77K±2.5K ； B0/100=3979K±1%) DR: Deviation Rate DR(MIN)%= （ Rmin-Rnom ） /Rnom*100% DR(MAX)%= （ Rmax-Rnom ） /Rnom*100% Rmin [ KΩ ] Rnom [ KΩ ] Rmax [ KΩ ] DR(MIN)%...

13 . SENSOR PARAMETER 2. THE PARAMETER OF THE OTHER SENSOR :( R 0 =15K±2% ; B0/100=3450K±2% ) DR: Deviation Rate DR(MIN)%= （ Rmin-Rnom ） /Rnom*100% DR(MAX)%= （ Rmax-Rnom ） /Rnom*100% Rmin [ KΩ ] Rnom [ KΩ ] Rmax [ KΩ ] DR(MIN)% DR(MAX)% --2 -30 60.78 64.77 68.99 -6.16 6.12 --20. -29 57.75 61.36 65.1...

14 . TROUBLESHOOTING 14. Troubleshooting14 . 1 Trouble guide Troubleshooting for normal malfunction Troubleshooting Possible Reasons of A bnormality How to Deal With Air conditioner can not start up 1. Power supply failure; 2. Trip of breaker or blow of fuse ； 3 . Power voltage is too low; 4. Improp...

14 . TROUBLESHOOTING 24K/36K DC-Inverter unitary (Main control board upside-down) 1) Fault code displayed by LED lamps on outdoor main control board. There are 3 LED lamps on control board, LED1, LED2 and LED3.LED1 indicates the ten's place of the fault code, LED2 indicates the unit's place of the f...

14 . TROUBLESHOOTING 2) Display by 7 segment display board. Fault code will be displayed directly on 7 segment display board. : Show failure occur. Display ERROR code. LED1:Drive failure indicator Drive fault code display The lamp of drive board flashing shows failure occurs. How many times the driv...

14 . TROUBLESHOOTING 1 4.2 Fault codes The following is the fault code table of outdoor units. Table 1 Outdoor fault code Fault code Fault d escription Possible r eason s for a bnormality How to d eal w ith R emarks 1 Outdoor ambient temperature sensor fault 1.The outdoor ambient temperature sensor ...

14 . TROUBLESHOOTING Fault code Fault d escription Possible r eason s for a bnormality How to d eal w ith R emarks 13 Compressor overheat protector device 1. The wiring of the overload protector is connected loosely. 2. The overload protector fails . 3. The refrigerant is not enough; 4. The installa...

14 . TROUBLESHOOTING NOTE 1 : If the indoor unit can not start or the indoor unit stops itself after 30s, at the same time the unit does not display the fault code, please check the fire and the socket of the control board. NOTE 2 : If the indoor unit displays the 75,76,77,78 fault code after you tu...

14 . TROUBLESHOOTING Table 2 Drive fault code (24K/36K) Fault code Fault d escription Possible r eason s for a bnormality How to d eal w ith 1 Inverter DC voltage overload fault 1. Power supply input is too high 2 Inverter DC low voltage fault or too low; 2. Driver board fault. 1. Check power supply...

14 . TROUBLESHOOTING Fault code Fault description Possible reasons for abnormality How to deal with 1 Q axis current detection, failure in drive control 1. Compressor wire is not connected properly; 2. Bad driver board components; 3. Compressor start load is too large; 4. Compressor demagnetization;...

15 . CHECKING COMPONENTS 15. Checking components15.1 Check refrigerant system See ----- Tube defrost. Feel ----- The difference between tube’s temperature. Test ----- Test pressure. Cooling mode Test system pressure. Is the low pressure normal at service part ? The pressure on the high side. The pre...

15 . CHECKING COMPONENTS Heating mode Test system pressure. Is the high pressure normal at service part ? The pressure on the high side. The pressure on the low side. Recharge refrigerant after air purging with the vacuum pump. Is the high pressure normal over again? Air remains at the refrigerant s...

1 5 . CHECKING COMPONENTS DC Inverter & Controller Thermal Sensor Compressor Power Test in resistance. Tool: Multi-meter. Test the resistance of the winding. The compressor fails if the resistance of winding is 0 (short circuit)or∞(open circuit). Familiar error: 1) Compressor motor lock.2) Disch...

16 . DISASSEMBLY AND ASSEMBLY FOR COMPRESSOR AND MOTOR 16. Disassembly and assembly for compressor and motor The special tools for compressor & motor disassembly and assembly ： Tool 1 Hexagon Screwdriver 2 Hexagon Socket Outdoor unit 24K Important: Before disassembly and assembly, make sure that...

16 . DISASSEMBLY AND ASSEMBLY FOR COMPRESSOR AND MOTOR Outdoor unit 36K 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 1. Remove external casing 1. Remove the top cover, han...

17. Control logic description 17.1 An illustration to outdoor unit signal (1) Communication between indoor and outdoor units: The communication between the outdoor unit, thermostat and the indoor unit is achievedthrough 24V alternating current, as shown in figure below.The thermostat controls the sig...

17 . CONTORL LOGIC DESCRIPTION Compressor running rules:When the unit starts up in cooling mode, the compressor starts to work, and adjust its operating frequency according to the system target pressure and the actual pressure. If the actual pressure is higher than the target pressure, the compresso...

17 . CONTORL LOGIC DESCRIPTION ③ When the compressor signal and 4-way valve signal received from the thermostat are high level, that is Y-C and B-C are high level, the unit restores the normal target pressure to operate orwhen the compressor has operated for 30min 【 e2 】 with the decreased target pr...

17 . CONTORL LOGIC DESCRIPTION 17.5 Condenser High-temperature Protection DC-Inverter outdoor unitAC will enter T3 protection if any of the following conditions is satisfied. Condition1:Cooling mode: When the outdoor coil temp. T3 keeps higher than T2 for 10 seconds, the compressor and outdoor fan w...

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 : [email protected] Website : www.pdhvac.com Pioneer product line, parts, and supplies are available onl...