MIDDLE STATIC PRESSURE DUCT TYPE AIR CONDITIONER Owner’s Manual & Installation Manual SYSPLIT DUCT IMPORTANT NOTE: Read this manual and SAFETY MANUAL(if any) carefully before installing or operating your new air conditioning unit. Make sure to save this manual for future reference. Please check the applicable models, technical data, F-GAS(if any) and manufacturer information from the “Owner's Manual - Product Fiche ” in the packaging of the outdoor unit.
Table of Contents Safety Precautions ............................................................................04 Owner’s Manual Unit Specifications and Features........................................................08 1. Indoor unit ............................................................................................................................................................................08 2. Operating temperature...........................................................................
Installation Manual Accessories..........................................................................................16 Installation Summary.........................................................................17 Unit Parts.............................................................................................18 Indoor Unit Installation.....................................................................19 1. Select installation location...........................................................
Safety Precautions Safety Precautions Read Safety Precautions Before Operation and 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. WARNING This symbol indicates the possibility of personnel injury or loss of life. CAUTION This symbol indicates the possibility of property damage or serious consequences.
• Turn off the device and disconnect the power before cleaning. Failure to do so can cause electrical shock. • Do not clean the air conditioner with excessive amounts of water. • Do not clean the air conditioner with combustible cleaning agents. Combustible cleaning agents can cause fire or deformation. CAUTION • • • • • • • Turn off the air conditioner and disconnect the power if you are not going to use it for a long time. Turn off and unplug the unit during storms.
Safety Precautions WARNINGS FOR PRODUCT INSTALLATION 1. Installation must be performed by an authorized dealer or specialist. Defective installation can cause water leakage, electrical shock, or fire. 2. Installation must be performed according to the installation instructions. Improper installation can cause water leakage, electrical shock, or fire. (In North America,installation must be performed in accordance with the requirement of NEC and CEC by authorized personnel only.) 3.
Safety Precautions WARNING for Using R32/R290 Refrigerant When flammable refrigerant are employed, appliance shall be stored in a well -ventilated area where the room size corresponds to the room area as specifiec for operation. For R32 frigerant models: Appliance shall be installed, operated and stored in a room with a floor area larger than X m² . Appliance shall not be installed in an unvertilated space, if that space is smaller than X m² (Please see the following form).
Specifications and Features Unit Specifications and Features Indoor unit NOTE: Different models have different display panel. Not all the indicators describing below are available for the air conditioner you purchased. Please check the indoor display panel of the unit you purchased. Illustrations in this manual are for explanatory purposes. The actual shape of your indoor unit may be slightly different. The actual shape shall prevail.
Display panel Unit Specifications and Features Timer indicator Infrared receiver Manual button LED display Operation indicator Alarm indicator PRE-DEF (pre-heating/defrost) indicator • MANUAL button : This button selects the mode in the following order: AUTO, FORCED COOL, OFF. FORCED COOL mode : In FORCED COOL mode, the Operation light flashes. The system will then turn to AUTO after it has cooled with a high wind speed for 30 minutes. The remote control will be disabled during this operation.
Fixed-speed Type Unit Specifications and Features COOL mode Room Temperature HEAT mode 0°C-30°C (32°F-86°F) 17°C-32°C (62°F-90°F) 18°C-43°C (64°F-109°F) -7°C-43°C (19°F-109°F) Outdoor Temperature (For models with low-temp cooling systems) 18°C-52°C (64°F-126°F) (For special tropical models) DRY mode 10°C-32°C (50°F-90°F) 11°C-43°C (52°F-109°F) -7°C-24°C (19°F-75°F) 18°C-43°C (64°F-109°F) 18°C-52°C (64°F-126°F) (For special tropical models) NOTE: Room relative humidity less than 80%.
Care and Maintenance Cleaning Your Indoor Unit ALWAYS TURN OFF YOUR AIR CONDITIONER SYSTEM AND DISCONNECT ITS POWER SUPPLY BEFORE CLEANING OR MAINTENANCE. CAUTION Only use a soft, dry cloth to wipe the unit clean. If the unit is especially dirty, you can use a cloth soaked in warm water to wipe it clean. • Do not use chemicals or chemically treated cloths to clean the unit • Do not use benzene, paint thinner, polishing powder or other solvents to clean the unit.
Maintenance – Pre-Season Inspection After long periods of non-use, or before periods of frequent use, do the following: Care and Maintenance Check for damaged wires Check for leaks Make sure nothing is blocking all air inlets and outlets Page 12
Troubleshooting SAFETY PRECAUTIONS Common Issues The following problems are not a malfunction and in most situations will not require repairs. Issue Possible Causes Unit does not turn on when pressing ON/OFF button The Unit has a 3-minute protection feature that prevents the unit from overloading. The unit cannot be restarted within three minutes of being turned off.
Issue Possible Causes The outdoor unit makes noises The unit will make different sounds based on its current operating mode. Dust is emitted from either the indoor or outdoor unit The unit may accumulate dust during extended periods of non-use, which will be emitted when the unit is turned on. This can be mitigated by covering the unit during long periods of inactivity.
Problem The unit is not working Poor heating performance Indicator lamps continue flashing Error code appears and begins with the letters as the following in the window display of indoor unit: • E(x), P(x), F(x) • EH(xx), EL(xx), EC(xx) • PH(xx), PL(xx), PC(xx) Solution Power failure Wait for the power to be restored The power is turned off Turn on the power The fuse is burned out Replace the fuse Remote control batteries are dead Replace batteries The Unit’s 3-minute protection has been activa
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. The items are not included with the air conditioner must be purchased separately.
Installation Summary 1 3 2 Install the indoor unit 5 MC Install the outdoor unit Installation Summary 6 Install the drainpipe 4 L(L1) N(L2) MC Evacuate the refrigeration system Connect the wires Connect the refrigerant pipes 7 Perform a test run Page 17
Unit Parts NOTE: The installation must be performed in accordance with the requirement of local and national standards. The installation may be slightly different in different areas. 2 1 2 3 4 3 Air outlet Air inlet 1 Electric control cabinet Drain pipe 4 Or 5 6 7 Connecting pipe Air inlet Air outlet 5 Unit Parts 6 6 6 7 7 Outdoor unit A Outdoor unit B NOTE ON ILLUSTRATIONS Illustrations in this manual are for explanatory purposes.
Indoor Unit Installation Installation Instructions – Indoor unit NOTE: Panel installation should be performedafter piping and wiring have been completed. Step 1: Select installation location Before installing the indoor unit, you must choose an appropriate location. The following are standards that will help you choose an appropriate location for the unit. Proper installation locations meet the following standards: Enough room exists for installation and maintenance.
Step 2: Hang indoor unit. 1. Please refer to the following diagrams to locate the four positioning screw bolt holes on the ceiling. Be sure to mark the paces where you will drill ceiling hook holes. Air outlet dimensions Air inlet dimensions Air filter Descending ventilation opening and mounted hook Air filter Electric control box Indoor Unit Installation (unit: mm/inch) Outline dimension air outlet opening size MODEL (Btu/h) A B C D 9K/12K 700/27.6 200/7.9 506/19.9 450/17.7 152/6 537/21.
Wood The mounting holes for upper foam are used for auxiliary positioning bolts (if the foam is damaged or damaged, the spacing between the actual lifting lugs shall be the standard). Installation locating hole Upper foam Place the wood mounting across the roof beam, then install the hanging screw bolts. Wood mounting Roof beam Ceiling Hanging screw bolts New concrete bricks Inlay or embed the screw bolts. (Blade shape insertion) 2.
Step 3: Duct and accessories installation 1. Install the filter (optional) according to the size of the air inlet. 2. Install the canvas tie-in between the body and duct. 3. The air inlet and air outlet duct should be far enough apart enough to a avoid air passage short-circuit. 4. Connect the duct according to the following diagram: Canvas tie-in Canvas tie-in Isolation booth Air outlet Step 4: Adjust the air inlet direction (From rear side to under-side) 1. Take off the ventilation panel and flange.
Step 5: Fresh air duct installation Dimension : Duct joint for fresh air Pump maintainance: 1. Remove four screws from the drain pump. 2. Unplug the pump power supply and water level switch cable. 3. Detach the pump. MODLE 9-12 Ø92mm(3.62”) Ø113mm(4.45”) Pump Step 7: Drill wall hole for connective piping 1. Determine the location of the wall hole based on the location of the outdoor unit. MODLE 18-60 Ø125mm(4.92”) Ø160mm(6.3”) 2. Using a 65mm (2.5in) or 90mm(3.
Step 8: Connect drain hose NOTE ON DRAINPIPE INSTALLATION The drainpipe is used to drain water away from the unit. Improper installation may cause unit and property damage. • CAUTION • Insulate all piping to prevent condensation, which could lead to water damage. • If the drainpipe is bent or installed incorrectly, water may leak and cause a water-level switch malfunction. • In HEAT mode, the outdoor unit will discharge water.
3. Pass the drain hose through the wall hole. Make sure the water drains to a safe location where it will not cause water damage or a slipping hazard. Units with a pump. 1. Remove the test cover. Fill the water pan with 2 liters of water. NOTE: The drainpipe outlet should be at least 5cm (1.9”) above the ground. If it touches the ground, the unit may become blocked and malfunction.
Outdoor Unit Installation 6 0 cm ( 2 4 i n ) a b o ve Install the unit by following local codes and regulations , there may be differ slightly between different regions. 30cm in) l (12 wal m k c 30 bac m fro (12 on le in) ft in) (79 m nt c 0 o 20 in fr 60cm (2 on rig 4in) ht Installation Instructions – Outdoor unit Step 1: Select installation location Before installing the outdoor unit, you must choose an appropriate location.
Step 2: Install drain joint(Heat pump unit only) Before bolting the outdoor unit in place, you must install the drain joint at the bottom of the unit. Note that there are two different types of drain joints depending on the type of outdoor unit. If the drain joint comes with a rubber seal (see Fig. A ), do the following: 1. Fit the rubber seal on the end of the drain joint that will connect to the outdoor unit. 2. Insert the drain joint into the hole in the base pan of the unit. 3.
(unit: mm/inch) Outdoor Unit Dimensions Mounting Dimensions Distance A WxHxD Distance B 760x590x285 (29.9x23.2x11.2) 530 (20.85) 290 (11.4) 810x558x310 (31.9x22x12.2) 549 (21.6) 325 (12.8) 845x700x320 (33.27x27.5x12.6) 560 (22) 335 (13.2) 900x860x315 (35.4x33.85x12.4) 590 (23.2) 333 (13.1) 945x810x395 (37.2x31.9x15.55) 640 (25.2) 405 (15.95) 990x965x345 (38.98x38x13.58) 624 (24.58) 366 (14.4) 938x1369x392 (36.93x53.9x15.43) 634 (24.96) 404 (15.9) 900x1170x350 (35.4x46x13.
Refrigerant Piping Connection When connecting refrigerant piping, do not let substances or gases other than the specified refrigerant enter the unit. The presence of other gases or substances will lower the unit’s capacity, and can cause abnormally high pressure in the refrigeration cycle. This can cause explosion and injury.
Connection Instructions – Refrigerant Piping CAUTION The branching pipe must be installed horizontally. An angle of more than 10° may cause malfunction. • DO NOT install the connecting pipe until both indoor and outdoor units have been installed. • Insulate both the gas and liquid piping to prevent water leakage. • Step 2: Remove burrs. Burrs can affect the air-tight seal of refrigerant piping connection. They must be completely removed. 1.
Step 4: Connect pipes Connect the copper pipes to the indoor unit first, then connect it to the outdoor unit. You should first connect the low-pressure pipe, then the highpressure pipe. 5. Clamp flare form on the end of the pipe. The end of the pipe must extend beyond the flare form. Flare form 1. When connecting the flare nuts, apply a thin coat of refrigeration oil to the flared ends of the pipes. 2. Align the center of the two pipes that you will connect. Pipe 6. Place flaring tool onto the form. 7.
7. Thread this pipeline through the wall and connect it to the outdoor unit. Carefully bend the tubing in the middle according to the diagram below. DO NOT bend 8. Insulate all the piping, including the valves of the outdoor unit. the tubing more than 90° or more than 3 times. 9. Open the stop valves of the outdoor unit to Bend the pipe with thumb start the flow of the refrigerant between the indoor and outdoor unit.
12.To avoid getting an electric shock, never touch the electrical components soon after the power supply has been turned off. After turning off the power, always wait 10 minutes or more before you touch the electrical components. 13. Make sure that you do not cross your electrical wiring with your signal wiring. This may cause distortion and interference. 14. The unit must be connected to the main outlet. Normally, the power supply must have a impedance of 32 ohms. 15.
Outdoor Unit Wiring WARNING Before performing any electrical or wiring work, turn off the main power to the system. 2. Remove the 2 screws fixed on the front panel and side panel, then take it down to perform wire connection(see the figure of outdoor unit A). Unscrew the electrical wiring cover and remove it.(see the figure of outdoor unit B) 1. Prepare the cable for connection a. You must first choose the right cable size. Be sure to use H07RN-F cables.
Australia models Indoor Unit Wiring Please prepare spanner and flat-blade screwdriver before your installation work . 1. Remove two fixing screws, then remove the front panel. 2 Screws 1. Prepare the cable for connection. a. Using wire strippers, strip the rubber jacket from both ends of the signal cable to reveal about 15cm (5.9”) of the wire. b. Strip the insulation from the ends of the wires. c. Using a wire crimper, crimp the u-lugs to the ends of the wires. 2.
Power Specifications (Not applicable for North America) NOTE: Electric auxiliary heating type circuit breaker/fuse need to add more than 10 A. NOTE: The Electric circuit auxiliary breaker/fuse heatingspecification type circuit breaker/fuse shall be subject need toto the add unit more nameplate. than 10 A. The circuit breaker/fuse (applicable for Australianspecification model) shall be subject to the unit Nameplate.
Independent Power Supply Specifications ≤18K MODEL(Btu/h) POWER (indoor) PHASE VOLT CIRCUIT BREAKER/ FUSE(A) PHASE POWER (outdoor) VOLT 1 Phase 1 Phase 1 Phase 1 Phase 208-240V 208-240V 208-240V 1 Phase 208-240V 208-240V 15/10 15/10 15/10 15/10 15/10 1 Phase 1 Phase 1 Phase 1 Phase 1 Phase 208-240V 208-240V CIRCUIT BREAKER/ FUSE(A) 25/20 32/25 208-240V 208-240V 208-240V 50/40 70/55 70/60 ≤36K 37K~60K ≤36K 37K~60K PHASE 1 Phase 1 Phase 1 Phase 1 Phase VOLT 208-240V 208-
Air Evacuation Preparations and Precautions 6. Close the Low Pressure side of the manifold gauge, and turn off the vacuum pump. Air and foreign matter in the refrigerant circuit can cause abnormal rises in pressure, which can damage 7. Wait for 5 minutes, then check that there has been no change in system pressure. the air conditioner, reduce its efficiency, and cause 8. If there is a change in system pressure, refer injury.
Note on Adding Refrigerant Some systems require additional charging depending on pipe lengths. The standard pipe length varies according to local regulations. For example, in North America, the standard pipe length is 7.5m (25’). In other areas, the standard pipe length is 5m (16‘). The refrigerant should be charged from the service port on the outdoor unit’s low pressure valve. The additional refrigerant to be charged can be calculated using the following formula: Liquid Side Diameter φ6.35(1/4”) φ9.
Test Run Before Test Run A test run must be performed after the entire system has been completely installed. Confirm the following points before performing the test: a) Indoor and outdoor units are properly installed. b) Piping and wiring are properly connected. c) No obstacles near the inlet and outlet of the unit that might cause poor performance or product malfunction. d) Refrigeration system does not leak. e) Drainage system is unimpeded and draining to a safe location.
Packing and unpacking the unit Instructions for packing unpacking the unit: Unpacking: Indoor unit: 1.Cut the packing belt. 2. Unpack the package. 3. Take out the packing cushion and packing support. 4. Remove the packing film. 5. Take out the accessories. 6. Lift the machine out and lay it flat. Outdoor Unit 1. Cut the packing belt. 2. Take the unit out of the package. 3. Remove the foam from the unit. 4. Remove the packing film from the unit. Packing: Indoor unit: 1.
Impedance Information (Applicable to some countries of Middle East Area only) To be in compliance with EN61000-3-11, the product MTI-48HWN1-R shall be connected only to a supply of the system impedance: Zsys = 0.267802236 Ω or less. Before connecting the product to public power network, please consult your local power supply authority to ensure the power network meet above requirement.
The design and specifications are subject to change without prior notice for product improvement. Consult with the sales agency or manufacturer for details. Any updates to the manual will be uploaded to the service website, please check for the latest version. QS002UI-T2(B) 16123000002853 2021.07.
