McQuay MCM 020 D Manual
  1. Manuals
  2. Brands
  3. McQuay Manuals
  4. Air Conditioner
  5. MCM 020 D
  6. Manual

McQuay MCM 020 D Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

MCM - 2004
Ceiling Exposed Split Systems
Models: MCM 020 D/DR
MCM 025 D/DR
MCM 030 D/DR
MCM 040 D/DR
MCM 050 D/DR
MCM 061 C/CR
MCM 062 C/CR
REGISTERED
ISO 9002
©2004 McQuay International
+1 (800) 432-1342
www.mcquay.com

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the MCM 020 D and is the answer not in the manual?

Questions and answers

Related Manuals for McQuay MCM 020 D

Summary of Contents for McQuay MCM 020 D

  • Page 1 MCM - 2004 Ceiling Exposed Split Systems Models: MCM 020 D/DR MCM 025 D/DR MCM 030 D/DR MCM 040 D/DR MCM 050 D/DR MCM 061 C/CR MCM 062 C/CR REGISTERED ISO 9002 ©2004 McQuay International +1 (800) 432-1342 www.mcquay.com...

  • Page 2: Table Of Contents

    "McQuay" is a registered trademark of McQuay International. All rights reserved throughout the world. 2003 McQuay International "Bulletin illustrations cover the general appearance of McQuay International products at the time of publication and we reserve the right to make changes in design and construction at any time without notice."...

  • Page 3: Special Features

    Special Features Ultra Slim New Stylish Design Profile This unit is contemporary in design and match even the most up to date interior decor. The slim, round profile and compact design of this unit adds a touch of elegance to every decor. No indoor connection pipe and hanger bracket are visible.

  • Page 4: Specifications

    Specifications Cooling Only (R22) MCM 030D MODEL INDOOR UNIT MCM 020D MCM 025D MCM 040D MCM 050D OUTDOOR UNIT MLC 020B MLC 025B MLC 030B MLC 030C MLC 040C MLC 050C NOMINAL kcal/h 5040 6300 7056 7560 10080 12600 COOLING 5862 7327 8204...
  • Page 5 Heat Pump (R22) MCM030DR MCM040DR MODEL INDOOR UNIT MCM020DR MCM025DR MCM050DR OUTDOOR UNIT MLC020BR MLC025BR MLC030BR MLC030CR MLC035CR MLC040CR MLC050CR NOMINAL kcal/h 5040 6048 6552 7560 8820 10080 12096 COOLING 5862 7034 7620 8792 10258 11723 14068 CAPACITY Btu/h 20000 24000 26000 30000...
  • Page 6 Cooling Only (R22) MODEL INDOOR UNIT MCM061C OUTDOOR UNIT MLC061C NOMINAL kcal/h 14110 COOLING 16410 CAPACITY Btu/h 56000 NOMINAL TOTAL POWER 5593 NOMINAL TOTAL CURRENT POWER SOURCE V/Ph/Hz 220 - 240 / 1 / 50 REFRIGERANT / CONTROL R22 / CAPILLARY TUBE IN INDOOR AIR FLOW cfm / L/s 1550 / 732...
  • Page 7 Cooling Only (R22) MODEL INDOOR UNIT MCM062C OUTDOOR UNIT MLC061C NOMINAL kcal/h 14110 COOLING 16410 CAPACITY Btu/h 56000 NOMINAL TOTAL POWER 6195 NOMINAL TOTAL CURRENT 30.6 POWER SOURCE V/Ph/Hz 230 / 1 / 60 REFRIGERANT / CONTROL R22 / CAPILLARY TUBE IN INDOOR 1550 / 732 AIR FLOW cfm / L/s...
  • Page 8 Heat Pump (R22) MODEL INDOOR UNIT MCM061CR OUTDOOR UNIT MLC061CR NOMINAL kcal/h 14110 16410 COOLING CAPACITY Btu/h 56000 NOMINAL kcal/h 14110 HEATING 16410 CAPACITY Btu/h 56000 NOMINAL TOTAL POWER (COOLING) 5593 NOMINAL TOTAL POWER (HEATING) 4551 NOMINAL TOTAL CURRENT (COOLING) NOMINAL TOTAL CURRENT (HEATING) POWER SOURCE V/Ph/Hz...
  • Page 9 Heat Pump (R22) MCM062CR MODEL INDOOR UNIT MLC061CR OUTDOOR UNIT NOMINAL kcal/h 14110 COOLING 16410 CAPACITY Btu/h 56000 NOMINAL kcal/h 14110 HEATING 16410 CAPACITY Btu/h 56000 NOMINAL TOTAL POWER (COOLING) 6195 NOMINAL TOTAL POWER (HEATING) 5265 NOMINAL TOTAL CURRENT (COOLING) 30.6 NOMINAL TOTAL CURRENT (HEATING) 26.0...
  • Page 10 Cooling Only (R407C) MODEL INDOOR UNIT MCM020D MCM025D MCM030D MCM040D MCM050D OUTDOOR UNIT M4LC020B M4LC025B M4LC030C M4LC040C M4LC050C NOMINAL kcal/h 4,612 5,292 7,560 9,576 12,600 COOLING 5,363 6,155 8,792 11,134 14,654 CAPACITY Btu/h 18,300 21,000 30,000 38,000 50,000 220 - 240 / 1 / 50 POWER SOURCE V/Ph/Hz R407C / CAPILLARY TUBE (OUTDOOR)
  • Page 11 Heat Pump (R407C) MODEL INDOOR UNIT MCM020DR MCM025DR MCM030DR MCM040DR MCM050DR OUTDOOR UNIT M4LC020BR M4LC025BR M4LC030CR M4LC040CR M4LC050CR NOMINAL kcal/h 4,536 5,170 7,310 9,830 12,100 COOLING 5,274 6,008 8,499 11,430 14,068 CAPACITY Btu/h 18,000 20,500 29,000 39,000 48,000 NOMINAL kcal/h 4,790 6,050 7,812...
  • Page 12 Cooling Only (R407C) MODEL INDOOR UNIT MCM061C OUTDOOR UNIT M4LC60C M4LC061C NOMINAL kcal/h 13860 13610 COOLING 16120 15830 CAPACITY Btu/h 55000 54000 NOMINAL TOTAL POWER 6027 5645 NOMINAL TOTAL CURRENT 10.2 POWER SOURCE V/Ph/Hz 220 - 240 / 1 / 50 R407C / CAPILLARY TUBE IN INDOOR REFRIGERANT / CONTROL 1550 / 732...
  • Page 13 Cooling Only (R407C) MCM062C MODEL INDOOR UNIT OUTDOOR UNIT M4LC060C M4LC061C NOMINAL kcal/h 13860 13610 COOLING 16120 15830 CAPACITY Btu/h 55000 54000 NOMINAL TOTAL POWER 6027 5645 NOMINAL TOTAL CURRENT 10.2 220 - 240 / 1 / 50 POWER SOURCE V/Ph/Hz REFRIGERANT / CONTROL R407C / CAPILLARY TUBE IN INDOOR...
  • Page 14 Heat Pump (R407C) MODEL INDOOR UNIT MCM061CR OUTDOOR UNIT M4LC061CR NOMINAL kcal/h 14110 HEATING 16410 CAPACITY Btu/h 56000 NOMINAL kcal/h 13610 COOLING 15830 CAPACITY Btu/h 54000 NOMINAL TOTAL POWER (COOLING) 5645 NOMINAL TOTAL POWER (HEATING) 5145 NOMINAL TOTAL CURRENT (COOLING) NOMINAL TOTAL CURRENT (HEATING) POWER SOURCE V/Ph/Hz...
  • Page 15 Heat Pump (R407C) MODEL INDOOR UNIT MCM062CR OUTDOOR UNIT M4LC061CR NOMINAL kcal/h 14110 HEATING 16410 CAPACITY Btu/h 56000 NOMINAL kcal/h 13610 COOLING 15830 CAPACITY Btu/h 54000 NOMINAL TOTAL POWER (COOLING) 5645 NOMINAL TOTAL POWER (HEATING) 5145 NOMINAL TOTAL CURRENT (COOLING) NOMINAL TOTAL CURRENT (HEATING) POWER SOURCE V/Ph/Hz...

  • Page 16: Noise Level

    Noise Level Model Speed Overall Noise 1/1 Octave Sound pressure level (dB, ref 20µPa) A (dBA) Criteria 125Hz 250Hz 500Hz 1kHz 2kHz 4kHz 8kHz High MCM020D/DR Medium High MCM025D/DR Medium High MCM030D/DR Medium High MCM040D/DR Medium High MCM050D/DR Medium High MCM061/62 Medium C/CR...
  • Page 17 MCM020D/DR NC Curves NC-50 NC-45 High f an NC-40 NC-35 M edium fan NC-30 Low fan NC-25 NC-20 1000 2000 4000 8000 Octave-band frequency (Hz) M easured in anecho ic ro o m at 1m in fro nt o f the unit and 0.8m belo w the air discharge o pening MCM025D/DR NC Curves NC-50 High fan...

  • Page 18: Oc Tav E-Band F Requenc Y (Hz

    MCM030D/DR NC Curves N C -5 0 N C -4 5 Hig h f an N C -4 0 M ed ium f an N C -3 5 Lo w f an N C -3 0 N C -2 5 N C -2 0 1000 2000...

  • Page 19: Oc Tav E-Band F Requenc Y (Hz

    MCM050D/DR NC Curves N C -5 0 Hig h f an N C -4 5 M ed ium f an N C -4 0 Lo w f an N C -3 5 N C -3 0 N C -2 5 N C -2 0 1000 2000...

  • Page 20: Operating Range

    Operating Range Ensure the operating temperature is in allowable range. Cooling only Cooling Caution : HIGH AMBIENT UNIT The use of your air conditioner outside the range of working temperature and humidity can result in serious failure. LOW AMBIENT Indoor temp. (°CWB) Heat pump Heating Cooling...

  • Page 21: Refrigerant Circuit

    Refrigerant Circuit MODEL : MCM020D – MLC/ M4LC020B MODEL : MCM025D – MLC/ M4LC025B MCM030D – M4LC030B Page 20...
  • Page 22 MODEL : MCM030D – MLC/ M4LC030C MCM040D – MLC035C MCM040D – MLC/ M4LC040C MCM050D – MLC/ M4LC050C MODEL : MCM061/ 62C – MLC061C, M4LC60C/ 061C Page 21...
  • Page 23 MODEL : MCM020DR – MLC/ M4LC020BR MODEL : MCM025DR – MLC/M4LC025BR MCM030DR – MLC030BR Page 22...
  • Page 24 MODEL : MCM030DR – MLC/ M4LC030CR MCM040DR – MLC035CR MCM040DR – MLC/ M4LC040CR MCM050DR – MLC/ M4LC050CR NOTE : A4LC30CR WITH TXV ONLY MODEL : MCM061 / 062CR – MLC061C/ M4LC060CR Page 23...

  • Page 25: Performance Table

    Performance Table COOLING ONLY (R22) MODEL : MCM020D / MLC020B Indoor Indoor Capacity Outdoor DB, °C °C °C 19.4 26.7 13.9 5.144 4.937 4.752 4.568 4.134 3.834 3.689 3.633 3.588 5.056 4.868 4.700 4.532 4.102 3.804 3.660 3.605 3.560 5.550 5.290 5.058 4.827...
  • Page 26 MODEL : MCM030D / MLC030C Indoor Indoor Capacit Outdoor DB, °C °C °C 19.4 26.7 13.9 7.784 7.460 7.170 6.880 6.550 6.206 5.938 5.792 5.639 7.088 6.910 6.751 6.592 6.276 5.946 5.689 5.550 5.403 8.383 7.981 7.622 7.263 6.914 6.551 6.268 6.114 5.953...
  • Page 27 MODEL : MCM050D / MLC050C Indoor Indoor Capacit Outdoor DB, °C °C °C 19.4 26.7 13.9 12.749 12.256 11.815 11.374 10.717 10.114 9.762 9.601 9.451 11.176 11.014 10.869 10.724 10.104 9.535 9.204 9.052 8.910 14.011 13.300 12.665 12.030 11.335 10.697 10.325 10.155 9.996...
  • Page 28 COOLING ONLY (R407C) MODEL : MCM020D / M4LC020B Indoor Indoor Capacit Outdoor DB, °C °C °C 19.4 26.7 13.9 4.706 4.517 4.348 4.180 3.783 3.508 3.376 3.324 3.283 4.627 4.454 4.300 4.147 3.753 3.481 3.349 3.298 3.257 5.078 4.841 4.628 4.416 3.997 3.707...
  • Page 29 MODEL : MCM040D / M4LC040C Indoor Indoor Capacity Outdoor DB, °C °C °C 19.4 26.7 13.9 9.586 9.233 8.917 8.602 7.877 7.150 6.878 6.807 6.777 9.188 8.918 8.677 8.437 7.726 7.013 6.746 6.676 6.648 10.505 10.004 9.556 9.109 8.341 7.571 7.284 7.208 7.177...
  • Page 30 HEAT PUMP MODEL – R22 MODEL : MCM020DR / MLC020BR COOLING MODE) Indoor Indoor Capacity Outdoor DB, °C °C °C 19.4 26.7 13.9 5.106 4.907 4.729 4.552 4.120 3.821 3.677 3.621 3.576 4.748 4.625 4.514 4.404 3.986 3.697 3.557 3.503 3.460 5.600 5.318...
  • Page 31 MODEL : MCM040DR / MLC040CR (COOLING MODE) Indoor Indoor Capacit Outdoor DB, °C °C °C 19.4 26.7 13.9 9.748 9.448 9.180 8.913 8.162 7.408 7.127 7.0529 7.022 9.649 9.370 9.121 8.872 8.124 7.374 7.094 7.0204 6.990 10.889 10.381 9.928 9.475 8.676 7.875 7.576...
  • Page 32 HEATING MODE – R22 MODEL : MCM020DR / MLC020BR (HEATING MODE) Indoor DB°C Outdoor WB°C 15.0 17.0 19.0 21.0 24.0 26.7 -9.0 3.552 3.561 3.570 3.579 3.466 3.366 3.552 3.561 3.570 3.579 3.466 3.366 -5.0 3.858 3.823 3.789 3.754 3.702 3.655 3.858 3.823...
  • Page 33 MODEL : MCM040DR / MLC040CR (HEATING MODE) Indoor DB°C Outdoor WB°C 15.0 17.0 19.0 21.0 24.0 26.7 -9.0 6.456 6.337 6.218 6.099 6.108 6.117 6.456 6.337 6.218 6.099 6.108 6.117 -5.0 7.779 7.709 7.640 7.570 7.465 7.371 7.779 7.709 7.640 7.570 7.465 7.371...
  • Page 34 HEATPUMP MODEL – R407C MODEL : MCM020DR / M4LC020BR (COOLING MODE) Indoor Indoor Capacity Outdoor DB, °C °C °C 19.4 26.7 13.9 4.595 4.416 4.256 4.097 3.708 3.439 3.309 2.369 3.218 4.273 4.162 4.063 3.964 3.588 3.327 3.201 2.291 3.114 5.040 4.786 4.559...
  • Page 35 HEATPUMP MODEL – R407C MODEL : MCM040DR / M4LC040CR (COOLING MODE) Indoor Indoor Capacity Outdoor DB, °C °C °C 19.4 26.7 13.9 9.504 9.212 8.951 8.690 7.958 7.223 6.949 5.361 6.847 9.408 9.136 8.893 8.650 7.921 7.190 6.917 5.337 6.815 10.616 10.122 9.680...
  • Page 36 HEATING MODE – R407C MODEL : MCM020DR / M4LC020BR (HEATING MODE) Indoor DB°C Outdoor WB°C 15.0 17.0 19.0 21.0 24.0 26.7 -9.0 3.214 3.222 3.230 3.238 3.136 3.045 3.214 3.222 3.230 3.238 3.136 3.045 -5.0 3.490 3.459 3.428 3.396 3.349 3.307 3.490 3.459...
  • Page 37 MODEL : MCM040DR / M4LC040CR (HEATING MODE) Indoor DB°C Outdoor WB°C 15.0 17.0 19.0 21.0 24.0 26.7 -9.0 6.456 6.337 6.218 6.099 6.108 6.116 6.456 6.337 6.218 6.099 6.108 6.116 -5.0 7.779 7.709 7.639 7.570 7.465 7.371 7.779 7.709 7.639 7.570 7.465 7.371...

  • Page 38: Outlines And Dimensions

    INDOOR UNIT Model: MCM - D SERIES (COOLING ONLY AND HEAT PUMP) MODEL MCM020D/DR MCM025D/DR MCM030D/DR MCM040D/DR MCM050D/DR 1174 1174 1174 1674 1674 1082 1082 1082 1582 1582 1214 1214 1214 1714 1714 1379 1379 Page 37...
  • Page 39 MODEL : MCM061C/CR MODEL : MCM062C/CR A(GRILL) 1750 1930 1830 1880 Page 38...
  • Page 40 OUTDOOR UNIT MODEL : MLC020/ 025 B/BR, M4LC020/ 025 B/BR, MLC030B/BR Note : Dimension in mm MODEL : MLC030/ 035/ 040/ 050 C/CR, M4LC030/ 040/ 050 C/CR, M4LC060C Caution Sharp edges and coil surfaces are potential locations which may cause injury hazards. Avoid from being in contact with these places.
  • Page 41 MODEL : MLC / M4LC061 C/CR Page 40...

  • Page 42: Wiring Diagrams

    Wiring Diagrams COOLING ONLY INDOOR UNIT MODEL : MCM020/025D OUTDOOR UNIT MODEL : MLC/M4LC020/ 025B Page 41...
  • Page 43 INDOOR UNIT MODEL : MCM030D OUTDOOR UNIT MODEL : MLC030B Page 42...
  • Page 44 INDOOR UNIT MODEL : MCM030D OUTDOOR UNIT MODEL : MLC/M4LC030C Page 43...
  • Page 45 INDOOR UNIT MODEL : MCM040D OUTDOOR UNIT MODEL : MLC035C Page 44...
  • Page 46 INDOOR UNIT MODEL : MCM040/ 050D OUTDOOR UNIT MODEL : MLC/M4LC040/ 050C Page 45...
  • Page 47 INDOOR UNIT MODEL : MCM061/ 062C OUTDOOR UNIT MODEL : M4LC060C Page 46...
  • Page 48 INDOOR UNIT MODEL : MCM061/ 062C OUTDOOR UNIT MODEL: MLC/ M4LC061C Page 47...
  • Page 49 HEAT PUMP INDOOR UNIT MODEL : MCM020/ 025DR OUTDOOR UNIT MODEL: MLC/ M4LC020/ 025BR Page 48...
  • Page 50 INDOOR UNIT MODEL : MCM030DR OUTDOOR UNIT MODEL: MLC030BR Page 49...
  • Page 51 INDOOR UNIT MODEL : MCM030DR OUTDOOR UNIT MODEL: MLC/ M4LC030CR Page 50...
  • Page 52 INDOOR UNIT MODEL : MCM040DR OUTDOOR UNIT MODEL: MLC035CR Page 51...
  • Page 53 INDOOR UNIT MODEL : MCM040/ 050DR OUTDOOR UNIT MODEL: MLC/ M4LC040/ 050CR Page 52...
  • Page 54 INDOOR UNIT MODEL : MCM061/ 062CR OUTDOOR UNIT MODEL: MLC/M4LC061CR Page 53...
  • Page 55 INDOOR UNIT MODEL : MCM061/ 062CR OUTDOOR UNIT MODEL: MLC/ M4LC060CR Page 54...
  • Page 56 ATTACHMENT 60HZ OUTDOOR UNIT MODEL : MLC 30C (COOLING ONLY) 60HZ / 1 PHASE / 208 ~230V MODEL : MLC040/ 050C (COOLING ONLY) 60HZ / 3 PHASE / 200 ~230V MODEL : MLC040/ 050CR (COOLING ONLY) 60HZ / 3 PHASE / 200 ~230V Page 55...
  • Page 57 3 PHASE FOR 2 & 3 HP OUTDOOR UNIT MODEL : MLC/ M4LC020/ 025B (COOLING ONLY) 3 PHASE / 50 HZ / 380 ~ 415V MODEL : MLC/ M4LC030C (COOLING ONLY) 3 PHASE / 50 HZ / 380 ~ 415V Page 56...
  • Page 58 MODEL : MLC/ M4LC020/ 025BR (HEAT PUMP) 3 PHASE / 50HZ / 380 ~ 415V MODEL : MLC/ M4LC030CR (HEAT PUMP) 3 PHASE / 50HZ / 380 ~ 415V Page 57...
  • Page 59 HIGH AMBIENT UNIT OUTDOOR UNIT MODEL : MLC020/ 025B (COOLING ONLY) 50HZ / 1 PHASE / 220 – 240V, 60HZ / 1 PHASE / 208 – 230V OUTDOOR UNIT MODEL : MLC030C (COOLING ONLY) 50HZ / 1 PHASE / 220 – 240V, 60HZ / 1 PHASE / 208 –...
  • Page 60 OUTDOOR UNIT MODEL : MLC020/ 025BR (HEAT PUMP) 50HZ / 1 PHASE / 220 – 240V OUTDOOR UNIT MODEL : MLC030CR (HEAT PUMP) 50HZ / 1 PHASE / 220 – 240V, 60 HZ / 1 PHASE / 220V OUTDOOR UNIT MODEL : MLC040/ 050CR (HEAT PUMP) 50HZ / 3 PHASE / 380 –...
  • Page 61 LOW AMBIENT UNIT (OPTIONAL) OUTDOOR UNIT MODEL : MLC010B / 015B (50HZ) OUTDOOR UNIT MODEL : MLC020B / 025B (50HZ) Page 60...
  • Page 62 LOW AMBIENT UNIT OUTDOOR UNIT MODEL : MLC010/ 015BR 50HZ / 1 PHASE / 220 – 240V OUTDOOR UNIT MODEL : MLC020BR 50HZ / 1 PHASE / 220 – 240V OUTDOOR UNIT MODEL : MLC025BR 50HZ / 1 PHASE / 220 – 240V Page 61...
  • Page 63 SINGLE PHASE FOR 4HP OUDOOT UNIT MODEL : MLC/ M4LC040C (COOLING ONLY) MODEL : MLC/ M4LC040CR (HEATPUMP) Page 62...

  • Page 64: Special Precautions For R407C

    Special Precautions for R407 Special Precautions When Dealing With Refrigerant R407C Unit 1) What is new refrigerant R407C? R407C is a zeotropic refrigerant mixture which has Zero Ozone Depletion Potential (ODP = 0) and thus conformed to the Montreal Protocol regulation. It requires Polyol-ester oil (POE) oil for its compressor's lubricant.
  • Page 65 c) Ensure that the compressor is not expose to open air for more than the recommended time specified by its manufacturer (typically less than 10 minutes). Removed the seal-plugs only when the compressor is about to be brazed. d) The system should be thoroughly vacuumed to 1.0 Pa (-700mmHg) or lower. This vacuuming level is more stringent than R22 system so as to ensure no incompressible gas and moisture in the system.

  • Page 66: Installation

    Installation Caution Cautio Sharp edges and coil surfaces are potential injury hazard. Avoid from contact with them. (1) Installation of Outdoor Unit Preliminary Site Survey • Electrical supply and installation is to conform to local authority's (e.g. National Electrical Board) codes and regulations.
  • Page 67 MCM-D MCM061C Figure B Please ensure that the following steps are taken : • Check the gradient for drainage flow as recommended in Figure B. • Provide clearance for easy servicing and optimal air flow as shown in Figure C. •...
  • Page 68 MCM061/ 062C Figure C • Provide the installation space as shown in Figure D. MCM-D MCM061/ 062C Figure D Page 67...
  • Page 69 Installation - Ceiling Exposed Type STEP 1 Remove air intake grille, side panel, side close-up and hanger bracket from the unit; see Fig E. SIDE CLOSE UP HANGER BRACKET SIDE FRAME AIR INTAKE GRILLE Figure E STEP 2 Position the hanger rods as per Fig B and install the hanger bracket; see Fig F. Figure F STEP 3 Hanger up the unit and tighten the bolt, after completed the piping and drain pipe;...
  • Page 70 Installation - Floor Standing Type (OPTIONAL SPECIFICATION) STEP 1 Remove air intake grille, side panel, side close-up and side panel from the unit; see Fig E. STEP 2 Position the floor support (field supply) as per Fig B. install the unit; see Fig I. Wall Wall Fig I...
  • Page 71 (2) Installation of Outdoor Unit As condensing temperature rises, evaporating temperature rises and cooling capacity drops. In order to achieve maximum cooling capacity, the location selected for outdoor unit should fulfill the following requirements: • Install the condensing (outdoor) unit in away such that hot air distributed by the outdoor condensing unit cannot be drawn in again (as in the case of short circuit of hot discharge air).
  • Page 72 (3) Refrigerant Piping Maximum Pipe Length And Maximum Number Of Bends • When the pipe length becomes too long, both the capacity and reliability drop. As the number of bends increases, system piping resistance to the refrigerant flow increases, thus lowering the cooling capacity, and as the result the font compressor may become defective.
  • Page 73 (5) Vacuuming and charging • The precharged outdoor unit does not need any vacuuming or charging. However once it is connected, the connecting pipe line and the indoor need to be vacuumed before releasing the R22/R407C from the outdoor unit. 1) Open the service port core cap.
  • Page 74 (6) Additional Charge • The refrigerant gas has already charged into the outdoor unit. For the piping length of 5m. Additional refrigerant charge after vacuuming is not necessary. • When the piping length is more than 5m, please use the table below (unit in gram). MODEL 020D/ 020DR 30/50...
  • Page 75 (8) Standard Operating Condition Cooling Only Unit Ts °C Th °C Temperature 19.4 13.9 minimum indoor temperature 26.7 19.4 maximum indoor temperature 19.4 13.9 minimum outdoor temperature 46.0 24.0 maximum- outdoor temperature Heat Pump Unit Ts °C Th °C Temperature 15.0 minimum indoor temperature 26.7...
  • Page 76 (9) Operating State and Fault Table Wireless Remote Control - Handset Cooling: LED Indicator Light Display Heatpump : LED Indicator Light Display COOL COOL HEAT Self Diagnosis Table Operation/ Faulty Indicator COOL HEAT Cooling mode Dry mode Fan mode Heat mode Auto mode in heating operation Auto mode in heating operation Defrost operation...

  • Page 77: Remote Control Operation Guide

    Remote Control Operation Guide G6 Remote Controller TEMPERATURE SETTING SIGNAL TRANSMISSION FAN SPEED AND VENTILATION MODE INDICATION • Set the desire room • SELECTION Blink to confirm the temperature. Press the button until last setting has been • Press button to increase send to the unit.
  • Page 78 SENSOR ON/OFF ON/OFF AUTO COOL HIGH TEMP MODE TEMP HEAT SWING SLEEP TIMER SWING SLEEP TIMER MODE AC-5300 (OPTIONAL) 1. “ON/OFF” switch 6. “Sleep” mode • Press to start the air conditioner unit. • Press button to activate the sleep function. •...
  • Page 79 G8 Remote Controller • 1. Transmission source Set the desired off time by pressing the SET button • The source where the signal will be transmitted. continuously. • Press the CLR button to cancel the off timer 2. Signal Transmission indication setting.

  • Page 80: Service And Maintenance

    Trouble Shooting When any air-conditioner malfunction is noted, immediately switch off the power supply to the unit, and contact the local dealer, if necessary. Some simple troubleshooting tips are given below : FAULT CAUSE • Protection against the frequent starting. Wait 3 or 4 minutes. 1.
  • Page 81 The design of the MLC outdoor series allows servicing to be carried out readily and easily. The removal of the top side, front and back panel make almost every part accessible. Under normal circumstances, these outdoor units only require a check and cleaning of air intake coil surface once quarterly.

  • Page 82: Troubleshooting

    Trouble Shooting When any air-conditioner malfunction is noted, immediately switch off the power supply to the unit, and contact the local dealer, if necessary. Some simple troubleshooting tips are given below : FAULT CAUSE • Protection against the frequent starting. Wait 3 or 4 minutes. 1.
  • Page 83 For Cooling Only Models Or Heat Pump Models (Cooling Cycle) Diagnosis By Flow Chart The following chart are efficient checking procedures for troubleshooting when these fan-coil units are coupled with the condensing units using standard wiring. For dual circuited models, perform the procedures for each circuit.

  • Page 84: Insufficient Cooling

    Insufficient Cooling Insufficient Cooling Cycling On Compressor Cycling High Discharge Pressure or Low See "High Discharge Pressure" or Tripping Suction Pressure "Low Suction Pressure" Dual Pressure Switch Clogged Capillary or Pressure Repair Clogging and Replace Switch The Switch If Required Switch Faulty Repair or Change If Necessary Running...

  • Page 85: Low Suction Pressure

    High Suction Pressure High Suction Pressure Evaporator Reduce The Fresh Air Intake Excessive Fresh Air Intake Air Inlet Temp. Insufficient Duct Insulation Reinforce The Duct Insulation Change Or Repair The Defective Compressor Valve Compressor Overcharged Refrigerant Purge The Refrigerant Low Suction Pressure Low Suction Pressure Clean The Air Filter Clogged Air Filter...
  • Page 86 For Heat Pump Models By means of pressure readings : PRESSURE PROBABLE CAUSE Data Circuit High Side 1. Overcharged with refrigerant. Low Side 2. Non-condensable gases in refrigerant circuit (e.g. oil). 3. Obstructed air-intake/discharge. 4. Short circuiting of hot air at outdoor unit. High Side 1.
  • Page 87 The most common causes of air conditioner failure to “start" are: a) Voltage not within ±10% of rated voltage. b) Power supply interrupted. c) Control settings improper. d) Air conditioner is disconnected from main power source. e) Fuse blown or circuit breaker off. ii) Diagnosis of Refrigerant Circuit / Application There might be some cases where the unit starts running but does not perform satisfactory, i.e.

  • Page 88: Parts List

    Parts List Model : MCM020/ 025 D/DR PARTS DESCRIPTION PARTS DESCRIPTION TOP PANEL COIL ASSY HANGER BRACKET - LEFT SIDE FRAME ASSY – RIGHT CONTROL BOX CLOSE UP, SIDE RIGHT CLOSE UP, SIDE PANEL COIL HOLDER ASSY - RIGHT SIDE FRAME ASSY - LEFT BACK PANEL COIL HOLDER ASSY - LEFT HANGER BRACKET –...
  • Page 89 Model : MCM030 D/DR PART DESCRIPTION PART DESCRIPTION BRACKET HANGER, LEFT GRILLE, AIR INTAKE TERMINAL BOX COVER ASSY, FILTER FRAME LEFT/RIGHT BRACKET CENTRE SUPPORT CLOSE UP, LEFT THERMISTER FRAME, SIDE LEFT FRAME, SIDE RIGHT ASSY, COIL HOLDER LEFT CLOSE UP, RIGHT FAN DECK ASSY, COIL HOLDER RIGHT COIL ASSY...
  • Page 90 Model : MCM040/ 050 D/DR PART DESCRIPTION PART DESCRIPTION BRACKET HANGER, LEFT DRAIN PAN ASSY TERMINAL BOX COVER DRAIN HOSE ASSY AIR INTAKE GRILLE ASSY CLOSE UP, LEFT AIR INTAKE GRILLE ASSY FRAME, SIDE LEFT BACKET, CENTER SUPPORT ASSY, COIL HOLDER LEFT FRAME, SIDE RIGHT FAN DECK CLOSE UP, RIGHT...
  • Page 91 Model : MCM061 / 062 C/CR PART DESCRIPTION PART DESCRIPTION TOP BACK PANEL DRAIN PAN COIL HOLDER LEFT BOTTOM PANEL COIL ASSY TERMINAL BOX FAN DECK FRONT FRAME (PLAIN) MOTOR FRONT FRAME (WITH LED INDICATORS) BLOWER HOUSING & WHEEL SIDE PANEL RUBBER COUPLING HOOK 4 x 14 mm BRACKET, FAN DECK...
  • Page 92 Model : MLC/ M4LC020/ 025 B/BR MLC030 B/BR PART DESCRIPTION PART DESCRIPTION BACK PANEL TOP PANEL BASE PAN COIL ASSY CAPILLARY TUBE MOTOR MOUNTING BRACKET PARTITION FAN MOTOR TERMINAL BOX PANEL RING WASHER SIDE PANEL FAN BLADE ACCESS PANEL SQUARE WASHER PLATE, FLARE VALVE HEX NUT FLARE VALVE...
  • Page 93 Model : MLC/ M4LC030/ 040/ 050/ 061 C/CR, M4LC060C MLC035 C/CR PART DESCRIPTION PART DESCRIPTION BASE PAN MOTOR BRACKET ASSY FLARE VALVE SIDE PANEL LEFT FLARE VALVE FAN MOTOR PARTITION FAN BLADE COMPRESSOR FRONT PANEL ASSY ACCESS PANEL TERMINAL BOX ASSY ACCUMULATOR PLATE, FLARE VALVE BACK PANEL...
  • Page 94 REGISTERED ISO 9002 ©2004 McQuay International +1 (800) 432-1342 www.mcquay.com...

This manual is also suitable for:

Mcm 025 drMcm 030 dMcm 030 drMcm 040 drMcm 040 dMcm 020 dr ... Show all

Table of Contents

Save PDF