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OB287--1.qxp 03.1.16 10:29 AM Page 1
SPLIT-TYPE, HEAT PUMP AIR CONDITIONER
Revision:
E2
• MXZ-24UV - has been added.
• Please void OB287.
No. OB287
REVISED EDITION-A
SERVICE MANUAL
Inverter-controlled multi system
Model
E1
MXZ-24UV -
E2
MXZ-24UV -
CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················3
3. INDOOR/OUTDOOR
CORRESPONDENCE TABLE ···························4
4. INDOOR UNITS COMBINATION ·······················5
5. SPE
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OB287--1.qxp 03.1.16 10:29 AM Page 2 1 TECHNICAL CHANGES E1 E2 MXZ-24UV - MXZ-24UV - 1. Combinations of the connectable indoor units have increased. 2. Noise filter P.C. board has changed to improve the capacity for protecting the inverter-controlled circuit when the voltage higher than the rated one is aupplied with the inverter-controlled circuit. 3. Noise filter P.C. board for “E1” and “E2” are not interchangeable. 4. Service parts have been changed as follows according to above chang
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OB287--1.qxp 03.1.16 10:29 AM Page 3 2 PART NAMES AND FUNCTIONS OUTDOOR UNIT (back and side) Air inlet E1 MXZ-24UV- E2 MXZ-24UV- Model indication Air outlet 3
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OB287--1.qxp 03.1.16 10:29 AM Page 4 3 INDOOR / OUTDOOR CORRESPONDENCE TABLE NOTE: SLH-1AR is equivalent to class 09 (9000BTU). MCFH-13NV, SEH-1.6AR, SLH-1.6AR is equivalent to class 12 (12000BTU). MCFH-18NV, SEH-2AR,SLH-2AR is equivalent to class 18 (18000BTU). OUTDOOR UNIT MXZ-24UV- E1 , MXZ-24UV- E2 07+07 07+09 07+12 07+18 09+09 09+12 09+18 12+12 12+18 18+18 07+07+07 07+07+09 07+07+12 07+07+18 07+09+09 07+09+12 07+09+18 09+09+09 09+09+12 h There is no combination other than this table. 4 C
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OB287--1.qxp 03.1.16 10:29 AM Page 5 4 INDOOR UNITS COMBINATION E1 , MXZ-24UV - E2 MXZ-24UV - NOTE: Electrical data is for outdoor unit only. Cooling capacity (kW) Outdoor unit Power Indoor units Current power consumption factor Unit A Unit B Unit C Total (A) combination (W) (%) 2.2 750 07 2.2 — — 3.62 90 (0.9-2.7) (260-930) 2.8 900 09 2.8 — — 4.35 90 (0.9-3.2) (260-1040) 4.0 1440 12 4.0 — — 6.96 90 (0.9-4.5) (260-1700) 5.0 2300 18 5.0 — — 11.11 90 (0.9-5.4) (260-2980) 4.4 1540 07+07 2.2 2.2
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OB287--1.qxp 03.1.16 10:29 AM Page 6 NOTE: Electrical data is for outdoor unit only. Heating capacity (kW) Outdoor unit Power Indoor units Current power consumption factor Unit A Unit B Unit C Total (A) combination (W) (%) 3.2 1130 07 3.2 — — 5.46 90 (0.9-4.1) (270-1600) 4.0 1320 09 4.0 — — 6.38 90 (0.9-4.8) (270-1700) 6.0 1900 12 6.0 — — 9.23 90 (0.9-7.2) (270-2570) 7.1 2300 18 7.1 — — 11.11 90 (0.9-7.8) (270-2830) 6.4 1930 07+07 3.2 3.2 — 9.32 90 (1.8-7.2) (470-2300) 7.2 2050 07+09 3.2 4.0 —
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OB287--1.qxp 03.1.16 10:29 AM Page 7 5 SPECIFICATION E1 E2 Outdoor model MXZ-24UV - , MXZ-24UV - Single phase Outdoor unit power supply 230V,50Hz Indoor units number 2 to 3 Indoor units total capacity (Connectable) ] 2 Total model name 34 (3 indoor units) / 36 (2 indoor units) Indoor units total capacity (Simultaneous operation) ] 2 Total model name 34 (3 indoor units) / 36 (2 indoor units) Piping total length Max. 50 Connecting pipe length Max. 25 Height difference (Indoor ~ Outdoor
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OB287--1.qxp 03.1.16 10:29 AM Page 8 6 NOISE CRITERIA CURVES SPL(dB(A)) LINE NOTCH COOL 46 HEAT 47 Test conditions. E1 MXZ-24UV - Cooling :DB35: WB24:
E2 MXZ-24UV - Heating :DB 7: WB 6: 90 80 70 NC-70 60 NC-60 50 NC-50 40 NC-40 30 NC-30 APPROXIMATE 20 TERESHOLD OF HEARING FOR NC-20 CONTINUOUS NOISE 10 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES, Hz 8 OCTAVE BAND SOUND PRESSURE LEVEL, 0dB = 0.0002 MICRO BAR
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More than 500 More than 100 387 900 (16) 355 (16) 531.3 381.8 27 40 250 50 460 More than More than 33 200 500 23 More than 500 Base bollt length Less than 25 OB287--1.qxp 03.1.16 10:29 AM Page 9 7 OUTLINES AND DIMENSIONS Unit: mm OUTDOOR UNIT E1 MXZ-24UV - E2 MXZ-24UV - 2-U-shape notched holes (Base bolt M10) 200 500 200 Rubber cushion Air in Veranda Base Air in Air out 2-12 5 36 Oval hole (Base bolt M10) 9.52 (flared) 3/8 (C unit) [ 10 320 35 900 12.7 (flared) 1/2 (A , B unit) [
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21 21 CN553 CN553 123 4 CN704 1 2 3 45 67 123 4 1 2 3 45 67 CN704 CN801 CN705 CN801 CN705 OB287--1.qxp 03.1.16 10:29 AM Page 10 8 WIRING DIAGRAM OUTDOOR UNIT E1 MODELS MXZ-24UV- BRN GRY DS62 DS61 C61 C63 C62 RED L ORN A RED BLK + + ORN + + RED K YLW WHT BLK - – – – WHT BLK YLW YLW R RED BLK TB5 CT NOISE FILTER X64 4 6 BLK 61 GRN/YLW P.C.BOARD POWER SUPPLY V 63H2 ~/N 230V X64 TB1 50Hz 0 1 PE MC ORN L61 L BLK LD62 UW 2 ORN N BLU LD61 F911 RELAY P.C. BOARD CIRCUIT BRAKER LDE TAB64 (1A) T801 C6
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OB287--1.qxp 03.1.16 10:29 AM Page 11 9 REFRIGERANT SYSTEM DIAGRAM E1 MXZ-24UV - Unit:mm E2 MXZ-24UV - Indoor a units b Outdoor unit H Piping length each indoor unit (a, b, c) 25m H Total piping length (a+b+c) 50m Height difference between units (H) 10m Bending point for each unit 25 H Total bending point 50 c k It does not matter which unit is higher. l Refrigerant pipe diameter is different according to indoor unit to be connected. When using extension pipes,refer to the tables below. l
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OB287--1.qxp 03.1.16 10:29 AM Page 12 PERFORMANCE CURVES 10 The standard data contained in these specifications apply only to the operation of the air conditioner under normal conditions, since operating conditions vary according to the areas where these units are installed. The following information has been pro- vided to clarify the operating characteristics of the air conditioner under the conditions indicated by the performance curve. (1) GUARANTEED VOLTAGE 198 ~ 264V (2) AIR FLOW Air flow
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OB287--1.qxp 03.1.16 10:29 AM Page 13 10-2.Capacity and input correction by inverter output frequency (OUTDOOR UNIT:MXZ-24UV) NOTE 1 : The dotted line on graphs connects the frequency range in normal operation shown by the full line and the frequency in test run shown by the point. 1. 07-class unit in single operation Capacity Total input Capacity Total input 1.5 2.0 1.5 1.5 1.5 1.0 1.0 1.0 1.0 0.5 0.5 0.5 0.5 0 50 100 150 Hz 0 50 100 150 Hz 0 50 100 150 Hz 0 50 100 15
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OB287--1.qxp 03.1.16 10:29 AM Page 14 10-3.Outdoor low pressure and outdoor unit current 1. 07-class unit in single operation NOTE:The unit of pressure has been changed to MPa on the international system of units(SI unit system). The converted score against the traditional unit system can be gotten according to the formula below. f f 1(MPa • G) =10.2(kgf/ • G) (1) COOL operation 1Both indoor and outdoor units are under the same temperature/humidity con
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OB287--1.qxp 03.1.16 10:29 AM Page 15 2. 09-class unit in single operation NOTE:The unit of pressure has been changed to MPa on the international system of units(SI unit system). The converted score against the traditional unit system can be gotten according to the formula below. 1(MPa • G) =10.2(kgf/f f • G) (1) COOL operation 1Both indoor and outdoor units are under the same temperature/humidity condition. 1.Set emergency switch to COOL or HEAT.The s
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OB287--1.qxp 03.1.16 10:29 AM Page 16 3. 12-class unit in single operation NOTE:The unit of pressure has been changed to MPa on the international system of units(SI unit system). The converted score against the traditional unit system can be gotten according to the formula below. 1(MPa • G) =10.2(kgf/f f • G) (1) COOL operation 1Both indoor and outdoor units are under the same temperature/humidity condition. 1.Set emergency switch to COOL or HEAT.The sw
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OB287--1.qxp 03.1.16 10:29 AM Page 17 4. 18-class unit in single operation NOTE:The unit of pressure has been changed to MPa on the international system of units(SI unit system). The converted score against the traditional unit system can be gotten according to the formula below. 1(MPa • G) =10.2(kgf/f f • G) (1) COOL operation ‹ Both indoor and outdoor units are under the same temperature/humidity condition. 1.Set emergency switch to COOL or HEAT.The s
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OB287--1.qxp 03.1.16 10:29 AM Page 18 11 MICROPROCESSOR CONTROL INVERTER MULTI SYSTEM CONTROL E1 MXZ-24UV - E2 MXZ-24UV - Output signal Input signal Compressor Compressor Compressor power primary secondary factor current current Indoor unit microprocessor Outdoor unit control microprocessor Drive SSR61 circuit Transistor module Fin temperature thermistor RT65 Accumulator Comp. H.P.S 63H2 Discharge x 61 temperature x 62 thermistor x 63 RT61 H.P.S 63H1 R. V. coil Indoor Unit 21S4 C Indoo
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OB287--1.qxp 03.1.16 10:29 AM Page 19 11-1.LEV control Linear expansion valve (LEV) is controlled by "Thermostat ON" commands given from each unit. Determination of LEV standard opening in each indoor unit • The standard opening is on the straight line, which connects an each standard point in the section where divided into seven according to the operation frequency of compressor as shown in the figure below. (LEV opening is controlled in proportion to the operation frequency.) Note: Opening
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OB287--1.qxp 03.1.16 10:29 AM Page 20 COOL DRY HEAT 1 Suction super heat (MIN gas pipe temperature thermistor - Evaporation temperature thermistor) 2 Each correction w 1 - •• • (Each gas pipe temperature thermistor - Evaporation temperature thermistor) • (Main pipe temperature thermistor - sub pipe temperature thermistor) 3 Discharge temperature w 2 w 2 • • • w 1 Perform this, when number of operation units is 2units or more w 2 When the correction opening of suction super heat i
