Mitsubishi Electric OC376 - Manuals

Page 2 - SAFETY PRECAUTION; Cautions for units utilizing refrigerant R410A; CAUTIONS RELATED TO NEW REFRIGERANT; Use new refrigerant pipes.; TECHNICAL CHANGES

2 2 SAFETY PRECAUTION Cautions for units utilizing refrigerant R410A CAUTIONS RELATED TO NEW REFRIGERANT Use new refrigerant pipes. Make sure that the inside and outside of refrige-rant piping are clean and it has no contaminationsuch as sulfur hazardous for use, oxides, dirt, shredded particles, et...

Page 3 - Be sure to use a filter drier for new refrigerant.

3 Gravimeter Unit [3] Service tools Use the below service tools as exclusive tools for R410A refrigerant. No. Tool name Specifications 1 Gauge manifold ·Only for R410A ·Use the existing fitting specifications. (UNF1/2) ·Use high-tension side pressure of 5.3MPa·G or over. 2 Charge hose ·Only for R410...

Page 5 - Capacity; OVERVIEW OF UNITS; Decorative panel

Branching pipe components Branch header (2 branches) Branch header (4 branches) Branch header (8 branches) CMY-Y62-G-E CMY-Y64-G-E CMY-Y68-G-E Outdoor unit Capacity 50% ~130% of outdoor unit capacity *2 Type 15(VHMA)/20(VHM) ~Type 140 1~ 8 unit Indoor unit thatcan be connected Number of units Total ...

Page 6 - PAC type; Heating Indoor

6 3-2. UNIT SPECIFICATIONS (2) Method for identifying MULTI-S model (1) Outdoor Unit ■ Indoor unit < When using Model 80 > ■ Outdoor unit <When using model 125 > (3) Operating temperature range Notes D.B. : Dry Bulb Temperature W.B. : Wet Bulb Temperature w 1. 10~46°C DB : In case of con...

Page 7 - SPECIFICATIONS; Model

7 4 SPECIFICATIONS *3 *3 *3 *3 *3 *3 *3 *3 PUMY-P125VHM PUMY-P125VHMA Cooling Capacity kW 14.0 Heating Capacity kW 16.0 Input (Cool) kW 4.32 Input Current (Cool) A 20.0/19.1/18.3, 20.0 Input (Heat) kW 4.33 Input Current (Heat) A 20.0/19.1/18.3, 20.0 EER (Cool) 3.24 COP (Heat) 3.69 Connectable indoor...

Page 8 - DATA; -1. COOLING AND HEATING CAPACITY AND CHARACTERISTICS; Model Number for indoor unit

8 5 DATA 5-1. COOLING AND HEATING CAPACITY AND CHARACTERISTICS 5-1-1. Method for obtaining system cooling and heating capacity: To obtain the system cooling and heating capacity and the electrical characteristics of the outdoor unit, first add up the ratingsof all the indoor units connected to the o...

Page 15 - -3. CORRECTING COOLING AND HEATING CAPACITY; Correcting Capacity for Changes in Air Conditions; • Standard conditions:; individual capacity at the rated time; total capacity at the rated time; Cooling performance curve

15 5-3. CORRECTING COOLING AND HEATING CAPACITY 5-3-1. Correcting Capacity for Changes in Air Conditions (1)The performance curve charts (Figure 1, 2) show the change ratio of capacity and input (power consumption) according to the indoor and outdoor temperature condition when defining the rated cap...

Page 16 - Correction factor diagram; Correction factor; Corrected pipe length

16 5-3-2. Correcting Capacity for Changes in the Length of Refrigerant Piping (1) During cooling, to obtain the ratio (and the equivalent piping length) of the outdoor units rated capacity and the total in-use indoor capacity, first find the capacity ratio corresponding to the standard piping length...

Page 18 - OUTLINES AND DIMENSIONS; Example of Notes; Piping Knockout Hole Details

18 6 OUTLINES AND DIMENSIONS 45 40 65 92 27 55 23 73 63 Rear piping hole (Knockout) Rear trunking hole (Knockout) Power supply wiring hole (2- [ 27Knockout) 19 55 92 75 40 73 63 23 2792 Right piping hole (Knockout) Right trunking hole (Knockout) Power supply wiring hole (2- [ 27Knockout) n92 92 65 4...

Page 20 - WIRING DIAGRAM

20 7 WIRING DIAGRAM SYMBOL NAME SYMBOL NAME SYMBOL NAME SYMBOL NAME TB1 Terminal Block <Power Supply> TB3 Terminal Block <Transmission> TB7 Terminal Block <Centralized Control> MC Motor for Compressor MF1,MF2 Fan Motor 21S4 Solenoid Valve <Four way valve> SV1 Solenoid Valve &...

Page 22 - NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION

22 8 NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION 8-1. TRANSMISSION SYSTEM SETUP 0 1 2 3 4 5 6 78 9 0 1 2 3 4 5 6 78 9 0 1 2 3 4 5 6 78 9 0 1 2 3 4 5 6 78 9 0 1 2 3 4 5 6 78 9 0 1 2 3 4 5 6 78 9 051 0 1 2 3 4 5 6 78 9 0 1 2 3 4 5 6 78 9 056 001 0 1 2 3 4 5 6 78 9 0 1 2 3 4 5 6 78 9 010 101 1 0 1 2 3...

Page 23 - Capillary tube for oil separator :

23 8-2. REFRIGERANT SYSTEM DIAGRAMPUMY-P100VHM PUMY-P125VHM PUMY-P140VHM PUMY-P100VHMA PUMY-P125VHMA PUMY-P140VHMA Refrigerant Gas pipe <5/8> Refrigerant Liquid pipe <3/8> Check valve <Low pressure> Accumulator Thermistor <Low pressure saturationtemperature> (TH6) Bypassvalve...

Page 24 - Example for the System

24 8-3. SYSTEM CONTROL Example for the System • Example for wiring control cables, wiring method and address setting, permissible lengths, and the prohibited items are listed in the standard system with detailed explanation. A. Example of a M-NET remote controller system (address setting is necessar...

Page 26 - : Sub Remote Controller

26 B. Example of a group operation system with 2 or more outdoor units and a M-NET remote controller. (Address settings are necessary.) Examples of T ransmission Cable Wiring Wiring Method Address Settings slla. Always use shielded wire when making connections between the outdoor unit (OC) and the i...

Page 27 - • Name, Symbol, and the Maximum Units for Connection; Permissible Length

27 • Name, Symbol, and the Maximum Units for Connection Permissible Length Prohibited items • Longest length via outdoor units : L 1 +L 2 +L 3 +L 4, L 1 +L 2 +L 3+ L 5, L 1 +L 2 +L 6 +L 7 [ 500 meters (1.25mm 2 ) • Longest transmission cable length : L 1, L 3 +L 4 , L 3+ L 5 , L 6, L 2 +L 6 , L 7 [ ...

Page 31 - and L

31 • Name, Symbol, and the Maximum Units for Connection Permissible Length Prohibited items • Never connect together the terminal blocks (TB5) for transmission wires for indoor units (IC) that have been connected to different outdoor units (OC). • M-NET remote controller and MA remote controller can...

Page 32 - TROUBLESHOOTING

32 9 TROUBLESHOOTING Operation procedure 1 Turn on the main power supply of all units at least 12 hours before test run. ”HO” appears on display panel for 3 min. 2 12 hours later, press TEST RUN button twice to perform test run. “TEST RUN “ appears on display panel. 3 Press OPERATION SWITCH button t...

Page 40 - Overvoltage or voltage shortage

40 on 2 1 3 4 5 6 7 8 Display Abnormal point and detecting method Causes Check points 4230 4250 4220 Overvoltage or voltage shortage Abnormal if any of followings are detected during compressor operation; • Decrease of DC bus voltage to 310V• Instantaneous decrease of DC bus voltage to 200V.• Increa...

Page 46 - Transmission bus busy error; Over error by collision

46 6603 Transmission bus busy error Over error by collision 1) The transmission processor cannot be transmitted since a short cycle voltage of the noise etc. mixes on the transmission line consecutively. Check whether the transmission line of the indoor unit, fresh master, lossnay and remote control...

Page 47 - From the preceding page.; Continued to the next page.

47 6607 No ACK (Acknowledgement) Abnormality which controller of the sending side detects when there is no answer (ACK) from other side though data was transmitted once. It is detected 6 times every 30 seconds continuously. Factor that not related to origin Turn off power supply of outdoor unit, ind...

Page 49 - From the previous page.

49 2) When synchronized operation with lossnay in other refrigerant system,the indoor units transmit the signal tothe lossnay after the lossnay and same refrigerant system outdoor unit are turned off or turned on again in 2 minutes, and detects abnormality. 3) Contact failure of lossnay or indoor un...

Page 52 - · MA remote controller is equipped with the diagnosis function; CHECK

52 Transmission data from remote controller Transmission data on transmission path When the number of data errors is "02": · MA remote controller is equipped with the diagnosis function If the air conditioner cannot be operated from the remote controller, diagnose the remote controller as ex...

Page 53 - “ ” indicator: Appears when current is carried.

53 ON/OFF CENTRALLY CONTROLLED ERROR CODE CLOCK ON OFF ˚C CHECK CHECK MODE FILTER TEST RUN FUNCTION ˚C 1Hr. NOT AVAILABLE STAND BY DEFROST FILTER CHECK TEST TEMP. TIMER SET “ ” indicator: Appears when current is carried. (M-NET Remote controller) (1) For M-NET remote controller systems Symptom or in...

Page 56 - Outdoor unit

56 <Initial Setting> 1 ON OFF 2 3 4 5 6 7 8 <Initial Setting> <Initial Setting> 1 ON OFF 2 3 4 5 6 1 ON OFF 2 Outdoor unit Switch SW6functionswitching SW7functionswitching SW8functionswitching Step Operation in Each Switch Setting ON OFF When to Set Remarks Before turning thepower ...

Page 59 - TEST POINT

59 Notes · High voltage is applied to the connecter (CNF1, 2) for the fan motor. Give attention to the service. · Do not pull out the connector (CNF1, 2) for the motor with the power supply on. (It causes trouble of the outdoor controller circuit board and fan motor.) Self checkSymptom : The outdoor...

Page 60 - SENSOR; Medium temperature thermistor

60 9-8. HOW TO CHECK THE COMPONENTS <Thermistor feature chart> Low temperature thermistors • Thermistor <Outdoor pipe> (TH3)• Thermistor <Low pressure saturated temperature> (TH6)• Thermistor <Outdoor> (TH7) Thermistor R0 = 15k ' ± 3% B constant = 3480 ± 2% R t =15exp{3480( 2...

Page 61 - TH4 Thermistor; Address setting

61 9-9. TEST POINT DIAGRAMOutdoor multi controller boardPUMY-P100VHM PUMY-P125VHM PUMY-P140VHM PUMY-P100VHMA PUMY-P125VHMA PUMY-P140VHMA SW2 Pump down 21S4 4-way valve SV1 Bypass valve CNAC Power supply for multi controller board CNS1 Indoor/ outdoor unit connecting wire CN52 Transmission wire of ce...

Page 66 - Connect to the 52C; DCL; Connection and internal circuit diagram

66 Active filter modulePUMY-P100VHMPUMY-P125VHMPUMY-P140VHM L1, L2Connect to the DCL(Reactor) Connect to the 52C Connect to theoutdoor powercircuitboard(TABN1) + – INot used N2Connect to theoutdoor powercircuitboard(TABN2) N1Non-connect PConnect to the out-door power circuitboard(TABP2) DCL L1 L2 AC...

Page 67 - Load

67 Active filter modulePUMY-P100VHMAPUMY-P125VHMAPUMY-P140VHMA + – + DCL L1 L2 ACTM P Io N1N2 (+) (- ) Load Connection and internal circuit diagram L1, L2Connect to theDCL(Reactor) Connect to theoutdoor powercircuitboard(TABP1) N2Non-connect N1Non-connect PConnect to the outdoor powercircuit board(T...

Page 68 - •When abnormality occurs, check display; Restart after 3 minutes; Abnormality code history 10 (the oldest); Indoor unit capacity error; delay; 3HS abnormality; oltage abnormality

68 9-10. OUTDOOR UNIT FUNCTIONS SW:setting 0....OFF1....ON 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 SW1 setting 12345678 00000000 10000000 01000000 1 1000000 00100000 10100000 01 100000 1 1 100000 00010000 10010000 01010000 1 1010000 001 10000 101 10000 01 1...

Page 69 - Refrigerant pull back/no; Excitation current/no

69 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 SW1 setting 12345678 1111 1000 00000100 10000100 01000100 1 1000100 00100100 10100100 01 100100 1 1 100100 00010100 10010100 01010100 1 1010100 001 10100 101 10100 01 1 10100 1 1 1 10100 00001 100 IC1 operation mode IC2 operation mode...

Page 70 - Display of actual operating frequency

70 64 65 66 69 70 71 72 73 74 75 76 77 78 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 SW1 setting 12345678 00000010 10000010 01000010 10100010 01 100010 1 1 100010 00010010 10010010 01010010 1 1010010 001 10010 101 10010 01 1 10010 00001010 10001010 01001010 1 1001010 00101010 10101010 01 101...

Page 71 - an step n

71 Displa y of target subcool step data Displa y of indoor SC/SH data Displa y of discharge superheat data Displa y of all control target data Displa y of detection data from high-pressure sensor and each ther mistor Displa y of actual frequency at time of abnor mality dela y Displa y of f an step n...

Page 73 - High-pressure sensor data at abnormality kgf/

73 170 171 172 173 174 175 176 177 178 179 180 189 192 193 195 196 197 198 199 200 201 202 203 204 206 207 208 209 210 SW1 setting 12345678 01010101 1 1010101 001 10101 101 10101 01 1 10101 1 1 1 10101 00001 101 10001 101 01001 101 1 1001 101 00101 101 101 1 1 101 0000001 1 1000001 1 1 100001 1 0010...

Page 74 - SW1 setting

74 21 1 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 SW1 setting 12345678 1 100101 1 0010101 1 1010101 1 01 10101 1 1 1 10101 1 0001 101 1 1001 101 1 0101 101 1 1 101 101 1 001 1 101 1 101 1 101 1 01 1 1 1...

Page 75 - ELECTRICAL WIRING; 0-2. WIRE DIAMETER AND MAIN POWER SWITCH CAPACITY

75 10 ELECTRICAL WIRING 10-1. OVERVIEW OF POWER WIRING 10-2. WIRE DIAMETER AND MAIN POWER SWITCH CAPACITY 10-2-1. Wiring diagram for main power supply 10-2-2. Power supply wire diameter and capacity This chapter provides an introduction to electrical wiring for the CITY MULTI-S series, including not...

Page 76 - Transmission wires; Cable diameter; 0-5. EXAMPLE EXTERNAL WIRING DIAGRAM FOR A BASIC SYSTEM; Grounded; Kind of remote control cable

76 10-3. DESIGN FOR CONTROL WIRING Please note that the types and numbers of control wires needed by the CITY MULTI-S series will depend on the remote controllers and whether they are linked with the system. 10-3-1. Selection number of control wires 10-3-3. M-NET Remote controller wiring 10-3-2. Con...

Page 77 - (3) Method of obtaining system power factor; AGREEMENT IS TO BE SIGNED WITH AN ELECTRIC POWER COMPANY; (1) Procedure for obtaining total power consumption; Total power consumption of each indoor unit

77 (3) Method of obtaining system power factor Use the following formula and the total power and current obtained in parts 1 and 2 on the previous page to calculate the system power factor. System power factor = (Total system power consumption) (Total system current x voltage) o 100% 10-6-2. Applyin...

Page 78 - REFRIGERANT PIPING TASKS; Select the size from the right table.

78 11 REFRIGERANT PIPING TASKS Line-Branch MethodConnection Examples(Connecting to Four Indoor Units) Liquid Line Gas Line Piping Diameter (mm) Model PUMY-P100-140 Liquid Line (mm) Gas Line (mm) { 15.88 { 9.52 Liquid Line Gas Line Liquid Line Gas Line Piping Diameter (mm) Model number 50 or lower 63...

Page 81 - 1-2. PRECAUTIONS AGAINST REFRIGERANT LEAKAGE; with the smallest volume; (a) Situation in which there are no partitions; late the refrigerant concentration:; Maximum concentration of; the effective mixing of air.; Total refrigerant in the refrigerating unit (

81 Indoor unit The smallestroom The secondsmallest room Outdoor unit Ventilation apparatus Indoor unit Opening Wall Outdoor unit (Situation in which thereare no door openings orin which there are open-ings above and blowdoors that occupy atleast 0.15% of the floorarea) Indoor unit Outdoor unit 11-2....

Page 82 - DISASSEMBLY PROCEDURE; OPERATING PROCEDURE; Removing the service panel and top panel; Figure 1; controller board in electrical parts box.; Photo 3; Removing the electrical parts box; (5) Remove the terminal cover and disconnect the compressor; Photo 1

82 12 DISASSEMBLY PROCEDURE OPERATING PROCEDURE PHOTOS & ILLUSTRATION 1. Removing the service panel and top panel (1) Remove 3 service panel fixing screws (5 ✕ 10) and slide the hook on the right downward to remove the service panel. (2) Remove screws (3 for front, 3 for rear/5 ✕ 10) of the top ...

Page 83 - Photo 4; detach the electrical parts box by pulling it upward. The; Photo 5; Multi controller board in the electrical parts box.; Note: In case of replacing thermistor

83 OPERATING PROCEDURE PHOTOS & ILLUSTRATION Photo 4 (6) Remove electrical parts box fixing screw (4 ✕ 10) and detach the electrical parts box by pulling it upward. The electrical parts box is fixed with 2 hooks on the left and 1 hook on the right. Electrical parts box Electrical partsbox fixing...

Page 84 - Photo 8; Photo 7; ing the right side panel.

84 4-way valve coil (21S4) 7. Removing the 4-way valve coil (21S4) (1) Remove the service panel. (See figure 1.)(2) Remove the top panel. (See figure 1.) [Removing the 4-way valve coil](3) Remove 4-way valve coil fixing screw (M4 ✕ 6). (4) Remove the 4-way valve coil by sliding the coil toward you.(...

Page 85 - removing the right side panel.; Photo 9; Bypass valve; rear of the unit and remove the right side panel.; rear of the unit and remove the right side panel.

85 OPERATING PROCEDURE PHOTOS 9. Removing bypass valve coil (SV1) and bypass valve (1) Remove the service panel. (See figure 1.)(2) Remove the top panel. (See figure 1.)(3) Remove 3 right side panel fixing screws (5 ✕ 10) in the rear of the unit and remove the right side panel. (4) Remove the bypass...

Page 86 - Note: Recover refrigerant without spreading it in the air.

86 Accumulator OPERATING PROCEDURE PHOTOS 12. Removing the compressor (MC) (1) Remove the service panel. (See figure 1.)(2) Remove the top panel. (See figure 1.)(3) Remove 2 front cover panel fixing screws (5 ✕ 10) and remove the front cover panel. (See photo 3.) (4) Remove 2 back cover panel fixing...

Page 89 - Part numbers that are circled are not shown in the figure.; Wiring

89 Part numbers that are circled are not shown in the figure. Part No. Part Name Specification No. Wiring Diagram Symbol Recom- mended Q , ty Remarks (Drawing No.) Q , ty/set 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 2 2 2 2 1 1 1 1 1 1 1 1 1 1 1...

Page 90 - RoHS PARTS LIST

90 26 25 27 30 29 28 21 24 23 22 1 2 3 10 11 12 13 14 15 16 17 18 19 20 18 4 7 8 9 5 6 14-1. FUNCTIONAL PARTSPUMY-P100VHM PUMY-P125VHM PUMY-P140VHM 14 RoHS PARTS LIST OC376B--3.qxp 08.1.17 1:16 PM Page 90

Page 91 - RoHS

91 Part numbers that are circled are not shown in the figure. Part No. Part Name Specification No. Wiring Diagram Symbol Recom- mended Q'ty Remarks (Drawing No.) Q'ty/set 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 RoHS G G G G G G G G G G G G G G ...

Page 93 - Wining

93 Part No. Part Name Specification No. RoHS Wining Diagram Symbol Recom- mended Q'ty Remarks (Drawing No.) Q'ty/set 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G 2 2 2 2 1 1 1 1 1 1 1 1 1 1...

Page 95 - OPTIONAL PARTS; NUMBER OF BRANCHING POINTS; DRAIN SOCKET

95 15 OPTIONAL PARTS CMY-Y62-G-ECMY-Y64-G-E NUMBER OF BRANCHING POINTS 2 4 CMY-Y68-G-E 8 BRANCH PIPE (Joint) Part No. DRAIN SOCKET Part No. PAC-SG61DS-E AIR OUTLET GUIDE Part No. PAC-SG59SG-E DRAIN PAN Part No. PAC-SG64DP-E w Need 2 pieces. FILTER DRYER (For liquid line : [ [ 9.52) Part No. PAC-SG82...

Page 96 - TM

HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN c Copyright 2006 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. Distributed in Jan. 2008 No. OC376 REVISED EDITION-B PDF 9Distributed in Aug. 2006 No. OC376 REVISED EDITION-A PDF 8Distributed in Mar. 2006 No. OC376 PDF 9Made i...