Lennox LIAH024-200U432, Owner'S Manual

Page 1: ... for selecting LENNOX air conditioners Please read this manual carefully before operation and keep it for further reference OWNER S MANUAL LENNOX AIR CONDITIONERS MODEL LIAH036 200U432 LIAH060 200U432 LIAH024 200U432 LIAH048 200U432 ...

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Page 3: ...gize and preheat the unit in advance before reusing it 3 Please properly select the model according to actual using environment otherwise it may impact the using convenience 4 This product has gone through strict inspection and operational test before leaving the factory In order to avoid damage due to improper disassembly and inspection which may impact the normal operation of unit please do not ...

Page 4: ...s when personal injury or property loss is caused by the following reasons 1 Damage the product due to improper use or misuse of the product 2 Alter change maintain or use the product with other equipment without abiding by the instruction manual of manufacturer 3 After verification the defect of product is directly caused by corrosive gas 4 After verification defects are due to improper operation...

Page 5: ... 3 2 Important Safety Instructions 5 4 Installation 8 4 1 Unit Inspection 8 4 2 Location 8 4 3 Piping Work 9 4 4 Condensate Removal 11 4 5 Ductwork 12 4 6 Electric Heater 12 4 7 Electrical Installation 14 5 Installation Check and Trial Run 19 5 1 Checking Items after Installation 19 5 2 Trial Run 20 6 Common Malfunction and Elimination 21 7 Maintenance and Care 23 7 1 Drain Pipe 23 7 2 Notice befo...

Page 6: ...U To prevent possible harm to the environment or human health from uncontrolled waste disposal recycle it responsibly to promote the sustainable reuse of material resources To return your used device please use the return and collection systems or contact the retailer where the product was purchased They can take this product for environmental safe recycling ...

Page 7: ... with the kits or accessories when installing Follow all safety codes Wear safety glasses protective clothing and work gloves Use quenching cloth for brazing operations Have fire extinguisher available Read these instructions thoroughly and follow all warnings or cautions included in literature and attached to the unit Consult local building codes and National Electrical Code NEC for special requi...

Page 8: ...2 Product Introduction 2 1 Product Description The LENNOX air handler offer the perfect combination of superior product quality operating efficiency operating sound levels and value for money The condensing unit uses the environmentally friendly refrigerant R410A which is chlorine free to help prevent damage to the ozone layer 2 2 Optional Accessories Indoor unit accessories No Name Appearance Q t...

Page 9: ...Physical Dimension Unit inch mm Model Dimension W D H A B 21 1 4 540 21 1 4 540 48 1 4 1224 11 5 8 295 20 508 24 3 4 630 21 1 4 540 57 1448 11 5 8 295 20 508 LIAH036 200U432 LIAH060 200U432 LIAH024 200U432 LIAH048 200U432 ...

Page 10: ...er kW 2 0 8 3 0 8 4 0 15 5 0 15 Model Motor 230V 60Hz HP FLA 1 2 2 1 1 3 2 Unit mm Model Filter size 490 516 15 525 516 15 LIAH036 200U432 LIAH060 200U432 LIAH024 200U432 LIAH048 200U432 LIAH036 200U432 LIAH060 200U432 LIAH024 200U432 LIAH048 200U432 LIAH036 200U432 LIAH060 200U432 LIAH024 200U432 LIAH048 200U432 ...

Page 11: ...tallation Assemble all tools hardware and supplies needed to complete the installation Some items may need to be purchased locally Make sure everything needed to install the product is on hand before starting 3 1 3 Codes Regulations This product is designed and manufactured to comply with national codes It is installer s responsibilities to install the product in accordance with such codes and or ...

Page 12: ...he introduction and disposal of refrigerants introduced into this unit Failure to follow these regulations may harm the environment and can lead to the imposition of substantial fines These regulations may vary due to the passage of laws A certified technician must perform the installation and service of this product Should questions arise contact your local EPA office Due to high system pressure ...

Page 13: ...roducing devices such as an automobile space heater gas water heater etc should not be operated in enclosed areas such as unventilated garages utility rooms or parking areas because of the danger of carbon monoxide CO poisoning resulting from the exhaust emissions If a furnace or air handler is installed in an enclosed area such as a garage utility room or parking area and a carbon monoxide produc...

Page 14: ...s provided with the condenser Service clearance is to take precedence Allow a minimum of 24 in front of the unit for service clearance When installing in an area directly over a finished ceiling such as an attic an emergency drain pan is required directly under the unit See local and state codes for requirements When installing this unit in an area that may become wet elevate the unit with a sturd...

Page 15: ...Air Handlers 9 A B 4 3 Piping Work 4 3 1 Specification of Connection Pipe Model External diameter inch Gas pipe Liquid pipe Φ3 4 Φ3 8 LIAH036 200U432 LIAH060 200U432 LIAH024 200U432 LIAH048 200U432 ...

Page 16: ...Air Handlers 10 4 3 2 Piping Preparation 4 3 2 1 Solder Connection All cut ends are to be round burr free and cleaned Failure to follow this practice increases the chances for refrigerant leakage ...

Page 17: ...to prevent rain water from pouring in and cause property loss or personal injury 3 Condensate drain pipe should be connected into special drain system for air conditioner 4 The drain pan has primary and secondary drain connection Condensate removal is performed by attaching a 3 4 PVC pipe to the evaporator coil pan and terminated in accordance with local or state Plumbing HVAC codes The installati...

Page 18: ... flow configuration Return Air Filters Each installation must include a return air filter This filtering may be performed at the air handler or externally such as a return air filter grille 4 6 Electric Heater The air handlers listed in this manual do not have factory installed electric heat Electric heat is available as an accessory Please refer to installation instructions provided with heater k...

Page 19: ...ing appliance ensure the area is properly ventilated 1 Refer to the Table for appropriate heater kit 2 Check any physical damage do not install damaged heater kit 3 Remove the upper access panel from air handler 4 Remove cover plate from air handler 5 Slide the heater kit in to the slot and secure element plate with previously removed screws 6 Insert power leads into the circuit breaker lugs or st...

Page 20: ...onals in compliance with local laws and regulations and the instructions in this manual Never extend the power cords The electric circuit must be equipped with a circuit breaker and air switch both with sufficient capacity The unit s operating power must be within the nominal range stated in the instruction manual Use a specialized power circuit for the air conditioner Do not draw power from anoth...

Page 21: ...led on the unit or electric box Screws must be tightened up Slipped screws must be replaced by specialized flat head screws Please use the power cables that are delivered along with the air conditioner Do not change the power cables arbitrarily Do not change the length and terminals of the power cables If you want to change the power cables please contact LENNOX s local service center Wiring termi...

Page 22: ... If working condition changes please adjust the specifications according to national standards Specifications of circuit breaker are based on a working condition where the working temperature is 40 C If working condition changes please adjust the specifications according to national standards Adopt 5pc of AWG18 power cords to be the communication cords between indoor unit and thermostat The maximu...

Page 23: ...10mm of the insulation layer 2 Use a screwdriver to unscrew the terminal screw on the terminal board 3 Use a round terminal fastener or clamp to fix the round terminal firmly on the peeled wire end 4 Locate the round terminal conduit Use a screwdriver to replace it and tighten up the terminal screw as shown below 3 How to connect the thermostat wires and power cords Lead the thermostat wires and p...

Page 24: ...ould be connected Wires of indoor unit Only for air handler without electric heater NOTE For cooling only unit there is no need to connect the B and D terminals High and low voltage wires should be led through different rubber rings of the electric box cover Do not bundle up the thermostat wires or lay them side by side otherwise errors will occur High and low voltage wires should be secured separ...

Page 25: ...r drop Check if the water can be drained fluently It may cause condensation and water drop Check if the power voltage accords with that on the nameplate Malfunction might happen and parts might be burned Check if the wiring and pipe line has been installed correctly Malfunction might happen and parts might be burned Check if the unit has been earthed soundly Hazard of electricity leakage Check if ...

Page 26: ...um and clip 4 Check if the unit appearance and piping system has been damaged during transportation or handling 5 Check if the terminals are loose and the phases are correct 5 2 2 Trial Run 1 Trial run can be operated by professional personnel only after above items have been checked items to be checked as per actual condition 2 Power on the unit and press ON OFF button to activate 3 After compres...

Page 27: ...ct breaker The unit operates but stops immediately Air inlet outlet of indoor unit is blocked Remove obstacles Abnormal cooling or heating Air inlet outlet of indoor unit is blocked Remove obstacles Inappropriate temperature setting Adjust setting at thermostat Doors or windows are opened Close the door or windows Direct sunshine Draw curtain or louver Too much heat source in the room Reduce heat ...

Page 28: ...sound for operation of drainage system The unit blows out dust When unit runs after no operation for a long period Dust in indoor unit is blew out The unit emits odor Operating The room odor absorbed by the unit is blew out again Indoor unit still runs after switch off After every indoor unit receive stop signal fan will keep running Indoor fan can be set as ON or AUTO mode Under ON mode indoor fa...

Page 29: ...ularly check if the drain pipe is clogged in order to drain condensate smoothly 7 2 Notice before Seasonal Use 1 Check if the inlet outlet of the indoor unit is clogged 2 Check if the ground wire is earthed reliably 3 Check if the filter screen has been set soundly 4 Check if the unit is installed firmly If there is something abnormal please contact the local appointed service center 7 3 Maintenan...

Page 30: ...ignated by factory Warranty should meet the following requirements 1 First run of the unit should be operated by professional personnel from factory appointed service center 2 Only factory manufactured accessories can be used on the machine 3 All the instructions listed in this manual should be followed 4 Warranty will be automatically invalid if fails to obey any item mentioned above ...

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