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Installation Manual
Super-Slim Four-Way Cassette
R410a Models
Indoor Unit Model
MCD-18HRFN1-QRD0
MCD-24HRFN1-QRD0
MCD-30HRFN1-QRD0
MCD-36HRFN1-QRD0
MCD-48HRFN1-QRD0
MCD-55HRFN1-QRD0
R32 Models
Indoor Unit Model
MCD-18HRFNX-QRD0
MCD-24HRFNX-QRD0
MCD-30HRFNX-QRD0
MCD-36HRFNX-QRD0
MCD-48HRFNX-QRD0
MCD-55HRFNX-QRD0
Outdoor Unit Model
MOB30U-18HFN1-QRD0
MOCA30U-24HFN1-QRD0
MOD30U-30HFN1-QRD0
MOD30U-36HFN1-QRD0
MOE30U-48HFN1-QRD0
MOE30U-55HFN1-QRD0
Outdoor Unit Model
MOB30U-18HFN8-QRD0
MOCA30U-24HFN8-QRD0
MOD30U-30HFN8-QRD0
MOD30U-36HFN8-QRD0
MOE30U-48HFN8-RRD0
MOE30U-55HFN8-RRD0
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Table of Contents
Related Manuals for Midea MCD-18HRFN1-QRD0
Summary of Contents for Midea MCD-18HRFN1-QRD0
- Page 1 Installation Manual Super-Slim Four-Way Cassette R410a Models Indoor Unit Model Outdoor Unit Model MCD-18HRFN1-QRD0 MOB30U-18HFN1-QRD0 MCD-24HRFN1-QRD0 MOCA30U-24HFN1-QRD0 MCD-30HRFN1-QRD0 MOD30U-30HFN1-QRD0 MCD-36HRFN1-QRD0 MOD30U-36HFN1-QRD0 MCD-48HRFN1-QRD0 MOE30U-48HFN1-QRD0 MCD-55HRFN1-QRD0 MOE30U-55HFN1-QRD0 R32 Models Indoor Unit Model Outdoor Unit Model MCD-18HRFNX-QRD0 MOB30U-18HFN8-QRD0 MCD-24HRFNX-QRD0 MOCA30U-24HFN8-QRD0 MCD-30HRFNX-QRD0 MOD30U-30HFN8-QRD0 MCD-36HRFNX-QRD0...
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Page 2: Table Of Contents
Table of Contents Installation Manual Accessories ..........Safety Precautions ......Installation Overview ....... Indoor Unit Installation ......a. Indoor Unit Parts ..........07 b. Indoor Unit Installation Instructions ..08 Outdoor Unit Installation ......a. Outdoor Unit Installation Instructions ....11 b. Outdoor Unit Types and Specifications ..12 c. - Page 3 Refrigerant Piping Connection ....a. Notes on Pipe Length and Elevation ....16 b. Refrigerant Piping Connection Instructions ..17 Caution: Risk of fire 8 Wiring (for R32 refrigerant ony ) ..........a. Outdoor Unit Wiring ......19 b. Indoor Unit Wiring ......20 c.
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Page 4: Accessories
Accessories The air conditioning system comes with the following accessories. Use all of the installation parts and accessories to install the air conditioner. Improper installation may result in water leakage, electrical shock and fire, or cause the equipment to fail. Name Shape Quantity... -
Page 5: Safety Precautions
Safety Precautions Read Safety Precautions Before Installation Incorrect installation due to ignoring instructions can cause serious damage or injury. The seriousness of potential damage or injuries is classified as either a WARNING or CAUTION. Failure to observe a warning may result in death. The appliance must be installed in accordance with national regulations. -
Page 6: Installation Overview
Installation Overview INSTALLATION ORDER Install the indoor unit Install the outdoor unit Install the drainpipe (Page 7) (Page 11) (Page 14) Pressure test & Evacuate Connect the wires Connect the refrigerant pipes (Page 23) (Page 19) (Page 16) Install the fr ont panel Perform a test run Service Documents... -
Page 7: Indoor Unit Installation
Indoor Unit Installation Indoor Unit Parts Drain pump (within indoor unit) Drain pipe Air outlet Air inlet Front grille Louver Display panel Refrigerant pipe Fig. 4.1 Safety Precautions CAUTION WARNING • Install the indoor and outdoor units, cables and • Securely install the indoor unit on a structure that wires at least 1m from televisions or radios can sustain its weight. -
Page 8: Indoor Unit Installation Instructions
Indoor Unit Installation Instructions CAUTION NOTE: Panel installation should be done after piping and wiring. DO NOT install the unit in the following locations: Step 1: Select installation location The indoor unit should be installed in a location that In areas with oil drilling or fracking meets the following requirements: In areas with caustic gases in the air, such as near ... - Page 9 Table 4.1: Distance from ceiling relative to height of indoor unit MODEL Length of A mm Length of H mm Model Amount of refrigerant maximum installation Minimum room (B tu/h) to be charged (kg) height (m) area (m²) ≤30000 ≤2.048 2.2m 30000-48000 2.048-3.0...
- Page 10 5. Mount the indoor unit. You will need two people to NOTE: Ensure that the indoor unit is level. The unit is lift and secure it. Insert suspension bolts into the unit’ s equipped with a built-in drain pump and float switch. hanging holes.
- Page 11 Outdoor Unit Installation Outdoor Unit Installation Instructions Step 1: Select installation location. If the location is exposed to strong winds (for example: near a seaside), the unit must be placed The outdoor unit should be installed in the location that against the wall to shelter it from the wind.
- Page 12 Fig. 5.3 Fig. 5.5 Fig. 5.6 ore than 60cm Fig. 5.4 Table 5.1: Length Specifications of Split Type Outdoor Unit (unit: mm) Outdoor Unit Dimensions Mounting Dimensions Distance A Distance B W x H x D 800x333x554 845x363x702 946x410x810 30/36 952x415x1333 48/55 NOTE...
- Page 13 NOTE: The minimum distance between the outdoor Notes On Drilling Hole In Wall unit and walls described in the installation guide does not apply to airtight rooms. Be sure to keep the unit You must drill a hole in the wall for the refrigerant piping, unobstructed in at least two of the three directions (M, and the signal cable that will connect the indoor and N, P) (See Fig.
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Page 14: Drainpipe Installation
Drainpipe Installation The drainpipe is used to drain water from the unit. NOTE ON DRAINPIPE INSTALLATION Improper installation may cause unit and property damage. • When using an extended drainpipe, tighten the indoor connection with an additional protection tube to prevent it from pulling loose. CAUTION •... - Page 15 3. Using a 65-mm core drill, drill a hole in the wall. Make NOTE: When drilling the wall hole, make sure to avoid sure that the hole is drilled at a slight downward angle, wires, plumbing, and other sensitive components. so that the outdoor end of the hole is lower than the indoor end by about 12mm .
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Page 16: Refrigerant Piping Connection
Refrigerant Pip ing Connection Table 7.1: The Maximum Length And Drop Height Safety Precautions Based on Models. (Unit: meters) Capacity Length of Maximum drop WARNING piping Code height • All field piping must be completed by a licensed technician and must comply with the local and national regulations. -
Page 17: Refrigerant Piping Connection Instructions
Step 2: Remove burrs. Table 7.2 Burrs can affect the gas-tight seal of refrigerant piping connection. They must be completely Permitted length removed. Total piping length 18K+18K L+Max (L1, L2) Hold the pipe at a downward angle to prevent 24K+24K 6 5m burrs from falling into the pipe. - Page 18 Table 7.3: PIPING EXTENSION BEYOND FLARE FORM Step 4: Connect pipes Connect the copper pipes to the indoor unit first, then Pipe Tightening Flare dimension (A) Flare shape connect it to the outdoor unit. You should first connect the torque (Unit: mm) gauge low-pressure pipe, then the high-pressure pipe.
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Page 19: Wiring
Wiring NOTE: The fuse is made of ceramic. Safety Precautions TAKE NOTE OF FUSE SPECIFICATIONS WARNING The air conditioner’s circuit board(PCB) is designed with a fuse to provide overcurrent • Be sure to disconnect the power supply before protection. The speci cations of the fuse are working on the unit. -
Page 20: Indoor Unit Wiring
b. Using wire strippers, strip the rubber jacket from both ends of signal cable to reveal about 15cm Control box of the wires inside. c. Strip the insulation from the ends of the wires. d. Using a wire crimper, crimp u-lugs on the ends of the wires. -
Page 21: Power Specifications
Power Specifications Indoor Power Supply Specifications MODEL PHASE 1 Phase 1 Phase 1 Phase 1 Phase 1 Phase POWER FREQUENCY 220-240V 220-240V 220-240V 220-240V 220-240V AND VOLT CIRCUIT BREAKER/ FUSE(A) Outdoor 1 Phase Inverter Power Supply Specifications MODEL Phase 1 Phase 1 Phase 1 Phase 1 Phase... - Page 22 Wiring Diagrams M CD-18HRFN1-QRD0 M CD-24HRFN1-QRD0 M CD-30HRFN1-QRD0 M CD-36HRFN1-QRD0 M CD-48HRFN1-QRD0 M CD-55HRFN1-QRDO Page 21 Page 22 ...
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Page 23: Pressure Test And Evacuation
Pressure Test Instructions Systems are pressure tested to ensure they are Safe – for this test a pressure above the system’s maximum allowable pressure (PS i ) is used Leak tight – this test is at PS i Pressure testing is hazardous and should be carried out carefully The nitrogen used for pressure testing is an asphyxiant, so the area around the system should be well-ventilated High pressures are used, so all non-essential personal should be evacuated... -
Page 24: Pressure Test Instructions
Air Evacuation 4. Turn on the vacuum pump to evacuate the system. Safety Precautions 5. Run the vacuum for at least 15 minutes, or until the Gauge reads -76cmHG (-1x105Pa). 6. Close the Low Pressure side of the manifold gauge, and CAUTION turn off the vacuum pump. -
Page 25: Evacuation Instructions
Note On Adding Refrigerant CAUTION • Refrigerant charging must be performed after wiring, vacuuming and the leak test. • DO NOT exceed the maximum allowable quantity of refrigerant or overcharge the system. Doing so can damage or impact the unit’ s function. •... -
Page 26: Panel Installation
Panel Installation Step 3: Install the panel CAUTION Align the front panel to the main body, taking into account the position of the piping and drain sides. DO NOT place the panel facedown on the floor, against Hang the four latches of the decorative panel to the a wall, or on uneven surfaces. - Page 27 Remove foam stops from inside the fan. Close the front grille. Attach the side of the front grille to the panel. Fasten the installation covers at all four corners by pushing them inwards. (See Fig.10.6) Connect the display panel cable to the corresponding wire on the main body.
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Page 28: Dip Switches
Dip Switches & Controller Dip Switches Definition Anti Cold Draft Fan motor power request Auto Restart after power Fault S1, S2 Unit Addresses Master Slave Temperature compensation Controller INSTALLATION METHOD Insert of the mainboard CN40 8. Turbo/Auxiliary Heat function indicator 1. -
Page 29: Test Run
Test Run Check to see that the drainage system is Before Test Run unimpeded and draining smoothly. g. Ensure there is no vibration or abnormal noise A test run must be performed after the entire system has during operation. been completely installed. Confirm the following points 5. -
Page 30: Service Info
Servicing Info (Required for the units adopt R32 Refrigerant only) 1. Checks to the area Prior to beginning work on systems containing flammable refrigerants, safety checks are necessary to ensure that the risk of ignition is minimised. For repair to the refrigerating system, the following precautions shall be complied with prior to conducting work on the system. - Page 31 the charge size is in accordance with the room size within which the refrigerant containing parts are installed; the ventilation machinery and outlets are operating adequately and are not obstructed; if an indirect refrigerating circuit is being used, the secondary circuits shall be checked for the presence of refrigerant;...
- Page 32 11. Repair to intrinsically safe components Do not apply any permanent inductive or capacitance loads to the circuit without ensuring that this will not exceed the permissible voltage and current permitted for the equipment in use. Intrinscially safe components are the only types that can be worked on while live in the presence of a flammable atmosphere.
- Page 33 When the final OFN charge is used, the system shall be vented down to atmospheric pressure to enable work to take place. This operation is absolutely vital if brazing operations on the pipe-work are to take place. Ensure that the outlet for the vacuum pump is not closed to any ignition sources and there is ventilation available.
- Page 34 18. Labelling Equipment shall be labelled stating that it has been de-commissioned and emptied of refrigerant. The label shall be dated and signed. Ensure that there are labels on the equipment stating the equipment contains flammable refrigerant. 19. Recovery When removing refrigerant from a system, either for service or decommissioning, it is recommended good practice that all refrigerants are removed safely.
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Page 35: Quick Step Installation Guide
Step 15: Complete your warranty card document and e-mail this with dated photo of outdoor serial number to: warranty@fgeuropeuk.co.uk (Auto Restart) Note: Installation videos can also be found on the Midea UK YouTube channel. Please contact your Midea support team if you have any issues during the installation and commissioning process. Tel: 02074 092009 E-Mail: technical@fgeuropeuk.co.uk Indoor... -
Page 36: Display Board, Fault Codes
Display Board & Fault Codes Icon explanation of indoor display board Error Codes (18K-60K) Operation Lamp Malfunction Error Code Timer Lamp (flashes) Indoor EEPROM malfunction Communication malfunction between indoor and outdoor units Indoor fan speed is out of control Open or short circuit of T1 temperature sensor Open or short circuit of T2 temperature sensor Refrigerant leakage detection Water level alarm... -
Page 37: 6 Service Documents
Service Documents Mi Indoor Maintenance Checklist 17 Old Park Lane, London, W1K 1QT Tel: + 44 (0) 2074 092009 Customer Contact Information Company Name: Contact Name: Contact Number: E-Mail Address: Site Reference Date of Visit: Indoor Details Location Served Model No. Serial No. - Page 38 Mi Outdoor Maintenance Checklist 17 Old Park Lane, London, W1K 1QT Tel: + 44 (0) 2074 092009 Customer Contact Information Company Name: Contact Name: Contact Number: E-Mail Address: Site Reference Date of Visit: Outdoor Details Location Served Model No. Serial No. 3 ☐...
- Page 39 Mi Commissioning & Installation Checklist 17 Old Park Lane, London, W1K 1QT Tel: + 44 (0) 2074 092009 Customer Contact Information Company Name: Contact Name: Contact Number: E-Mail Address: Site Reference Date of Visit: Site Address County/Region: Postcode: System Details Indoor Model No.
- Page 40 WARRANTY CLAIM REQUEST FORM 17 Old Park Lane, London, W1K 1QT Tel: + 44 (0) 2074 092009 Once this from is completed please return to: warranty@fgeuropeuk.co.uk Customer Contact Information Company Name: Contact Name: Contact Number: E-Mail Address: Site Reference: Date: Parts to Be Claimed Model No.
- Page 41 17 Old Park Lane, London, W1K 1QT Tel: + 44 (0) 2074 092009...