Catalog 2110B Ceiling And Floor Convertible Fan Coil Unit Models: MCM 020D/DR MCM 025D/DR MCM 030D/DR MCM 040D/DR MCM 050D/DR
Contents Special Features ................................................................................................................ 2 Specifications ................................................................................................................ 3 - 4 Outlines and Dimensions............................................................................................... 5 - 7 Wiring Diagrams ................................................................................................
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. Ceiling And Floor Convertible With Space Saving Installation This unit is designed for ceiling exposed type and floor exposed type with a very economical and space saving installation.
Specifications Cooling only MODEL INDOOR UNIT OUTDOOR UNIT COIL FIN INDOOR UNIT COMP. MCM050D MMC050B MLC050C 12,600 12,600 14,654 14,654 50,000 50,000 1,120 / 31.8 4 POLES X 145W 240 1.04 S.B.C 740 / 21.0 4 POLES X 95W 132 0.58 S.I.G.C 1,120 / 31.8 4 POLES X 145W 240 1.04 S.I.G.C 9.52 / 3/8 0.35 / 0.014 ALUMINIUM ALUMINIUM (HYDROPHILIC TYPE) 0.11 / 0.0043 4 4 3 12 12 12 0.36 / 3.95 0.36 / 3.95 0.24 / 2.58 249 / 9.80 249 / 9.80 249 / 9.80 1,714 / 67.40 1,714 / 67.40 1,214 / 47.80 670 / 26.
Heat Pump MODEL INDOOR UNIT OUTDOOR UNIT COIL TUBE COIL FIN PIPE OUTDOOR UNIT FAN COMP INDOOR UNIT FIN TUBE FAN NOMINAL COOLING CAPACITY NOMINAL HEATING CAPACITY POWER SOURCE REFRIGERANT / CONTROL AIR FLOW FAN MOTOR RATED INPUT POWER RATED RUNNING CURRENT MATERIAL DIAMETER THICKNESS MATERIAL THICKNESS ROW FIN PER INCH FACE AREA HEIGHT DIMENSION WIDTH DEPTH WEIGHT ROOM TEMPERATURE CONTROL AIR DISCHARGE OPERATION CONDENSATE DRAIN SIZE AIR FILTER PACKING HEIGHT DIMENSION WIDTH DEPTH POWER SOURCE
Outlines and dimensions Indoor Unit Model: MCM - D SERIES (Cooling only and heat pump) MODEL A B C D E F G H I J K L M MCM 020D/DR 1174 75 1082 68 58 156 1214 57 670 216 319 879 517 MCM 025D/DR 1174 75 1082 68 58 156 1214 57 670 216 319 879 517 MCM 030D/DR 1174 75 1082 68 93 156 1214 57 670 216 319 879 517 All dimensions in mm 5 MCM 040D/DR 1674 75 1582 68 93 156 1714 57 670 216 319 1379 517 MCM 050D/DR 1674 75 1582 68 93 156 1714 57 670 216 319 1379 517
Outdoor unit Model: MLC - B SERIES MODEL A MLC 020B / BR 840 MLC 025B / BR 840 B 646 646 C 330 330 D 297 297 E 309 309 F 626 626 G 46 46 H 90 90 J 64 64 K 177 177 L 106 106 M 408 408 N 378 378 P 124 124 Q R 492 78.5 492 78.
Model : MLC 040/050C, MLC 030/040/050CR Caution Sharp edges and coil surfaces are potential locations which may cause injury hazards. Avoid from being in contact with these places.
Wiring diagrams Model : MCM 020/025D - MLC 020/025B 8
Model: MCM 030D - MLC 030C 9
Model: MCM 030D - MMC 030A 10
Model : MCM 040D/050D - MLC 040C/050C 11
Model: MCM 040D - MMC 040B 12
Model: MCM 050D - MMC 050B 13
Model: MCM 020DR - MLC 020BR MCM 025DR - MLC 025BR 14
Model: MCM 030DR - MLC 030CR 15
Model: MCM 040DR - MLC 040CR MCM 050DR - MLC 050CR 16
Installation Caution Sharp edges and coil surface are potential injury hazard. Avoid from contact with them. (1) INSTALLATION OF INDOOR UNIT Preliminary Site Survey • Electrical supply and installation shall conform to the local authority (eg. National Electrical Board). • Voltage supply fluctuation must not exceed ±10% of the rated voltage. Electricity supply lines must be independent of welding transformers which can cause high supply fluctuation.
Please ensure that the following steps are taken: • Cheek the gradient for drainage flow as recommended in Figure B. • Provide clearance for easy servicing and optimal air flow as shown in Figure B. • The indoor unit must be installed such that there is no short circuit of the cool discharge air with the warm return air. • Do not install the indoor unit where there is direct sunlight shining on the unit. The location should be suitable for piping and drainage installation.
Installation - Ceiling Exposed Type STEP 1 Remove air intake grille, side panel, side close-up and hanger bracket from the unit; see Fig E. 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; install back the grille and panel Fig. G.
Installation - Floor Standing Type 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 and wall mounting bracket as per Fig B. install the unit; see Fig 1. * Wall mounting bracket will be supplied upon request. Fig I STEP 3 Two type of piping and drain pipe connection as Fig J.
(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 fulfil 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). Allow sufficient space for maintenance around the unit.
MMC SERIES ALL MODELS Minimum Distance A 300mm B 1000mm C 300mm (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 MODEL DATA Max. Length, L Max. Elevation, H Max. No.
(4) Wiring Electrical Connections • Wiring regulations on wire diameters differ from country to country. Please refer to your LOCAL ELECTRICAL CODES for field wiring rules. Be sure that installation comply with such rules and regulations. General Precautions • Ensure that the rated voltage of the unit corresponds to the name plate before carrying out proper wiring according to the wiring diagram. • Provide a power outlet to be used exclusively for each unit.
(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 020 025 030 040 050 7m 30 76 100 100 100 10m 75 190 250 250 250 15m 150 380 500 500 500 (7) Overall Checking • Ensure the following, in particular: 1) The unit is mounted solidly and rigid in position.
(8) Standard Operating Condition Cooling Only Unit Temperature minimum indoor temperature maximum indoor temperature minimum outdoor temperature maximum- outdoor temperature Ts °C 19.4 26.7 19.4 46.0 Th °C 13.9 19.4 13.9 24.0 Heat Pump Unit Temperature minimum indoor temperature maximum indoor temperature minimum outdoor temperature maximum- outdoor temperature Ts °C 10.0 26.7 -8.0 24 Ts : Dry bulb temperature Th : Wet bulb temperature 25 Th °C -9.
Servicing and maintenance Warning Disconnect from Main Supply before Servicing the air conditioner The unit is designed to give a long life operation with minimum maintenance required. However, it should be regularly checked and the following items should be given due attention. Components Air Filters Maintenance Procedure 1. Clean with a vacuum cleaner, or by tapping lightly and then washing in lukewarm water (below 40°C) With neutral soap. Recommended Schedule Every 2 weeks.
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.
Troubleshooting 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 1. Fan does not work 3 minutes after starting CAUSE • Protection against the frequent starting. Wait 3 or 4 minutes. • • • • 3. The air conditioning unit does not • blow sufficiently • • • 4. The remote control light is deficient • • • 5. Air discharge flow has a bad odor • 2.
Diagnosis By Flow Chart (Cooling Only) 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.
Insufficient Cooling Insufficient Cooling Compressor Cycling Cycling On Dual Pressure Switch Tripping High Discharge Pressure or Low Suction Pressure See "High Discharge Pressure" or "Low Suction Pressure" Clogged Capillary or Pressure Switch Repair Clogging and Replace The Switch If Required Switch Faulty Running Overcurrent Relay For Compressor Tripping High Voltage or Low Voltage Single-Phase High Discharge Pressure And High Suction Pressure Loose Connections Discharge Gas Thermostat or Inte
High Suction Pressure High Suction Pressure Low Evaporator Air Inlet Temperature Excessive Fresh Air Intake Reduce The Fresh Air Intake Insufficient Duct Insulation Reinforce The Duct Insulation Defective Compressor Valve Overcharged Refrigerant Change Or Repair The Compressor Purge The Refrigerant Low Suction Pressure Low Suction Pressure Evaporator Air Flow Restricted Evaporator Air Inlet Temperature Clogged Air Filter Low Clean The Air Filter Restricted Duct Remove The Restriction Low F
For Heat Pump Models By means of pressure readings : = = High Side Low Side High Side Low Side High Side Low Side Too High PROBABLE CAUSE A Little High Normal Circuit Too Low Data A Little Low PRESSURE 1. Overcharged with refrigerant. 2. Non-condensable gases in refrigerant circuit (e.g. oil). 3. Obstructed air-intake/discharge. 4. Short circuiting of hot air outdoor unit. 1. Poor compression/no compression (compressor defective.) 2. Check valve stick in open position. 3.
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. insufficient cooling.
DOP : 0299 Americas - 13600 Industrial Park Boulevard, P.O. Box 1551, Minneapolis, MINI 55440 USA (612) 553-5330 Asia - Jalan Pengapit 15/19, P.O.
