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Table of Contents
Related Manuals for Lennox LIAH024-200U432
Summary of Contents for Lennox LIAH024-200U432
- Page 1 High ESP Air Handler OWNER'S MANUAL LENNOX A I R CO ND I T I O NE RS MO D E L: LIAH024-200U432 LIAH036-200U432 LIAH048-200U432 LIAH060-200U432 Thank you for selecting LENNOX air conditioners.Please read this manual carefully before operation and keep it for further reference.
- Page 3 To Users Thank you for selecting LENNOX’s product. Please read this instruction manual carefully before installing and using the product, so as to master and correctly use the product. In order to guide you to correctly install and use our product and achieve...
- Page 4 The final right to interpret for this instruction manual belongs to LENNOX. Exception Clauses Manufacturer will bear no responsibilities when personal injury or property loss is caused by the following reasons: Damage the product due to improper use or misuse of the product.
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Page 5: Table Of Contents
Contents 1 Safety Precautions ............1 2 Product Introduction ............2 2.1 Product Description ..............2 2.2 Optional Accessories..............2 2.3 Physical Dimension ..............3 2.4 Names of Main Parts ..............4 2.5 General Information ...............4 3 Preparative for Installation..........5 3.1 Pre-Installation Instruction ............5 3.2 Important Safety Instructions ..........5 4 Installation ................ - Page 6 7.4 Parts Replacement............... 23 8 After-Sales Service ............24 This marking indicates that this product should not be disposed with other household wastes throughout the EU. 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.
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Page 7: Safety Precautions
Air Handlers 1 Safety Precautions This product can’t be installed at corrosive, inflammable or explosive environment or the place with special requirements, such as kitchen. Otherwise, it will affect the normal operation or shorten the service life of the unit, or even cause fire hazard or serious injury. -
Page 8: Product Introduction
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. -
Page 9: Physical Dimension
Air Handlers 2.3 Physical Dimension Unit: inch(mm) Dimension Model LIAH024-200U432 21-1/4(540) 21-1/4(540) 48-1/4(1224) 11-5/8(295) 20(508) LIAH036-200U432 LIAH048-200U432 24-3/4(630) 21-1/4(540) 57(1448) 11-5/8(295) 20(508) LIAH060-200U432... -
Page 10: Names Of Main Parts
Air Handlers 2.4 Names of Main Parts 2.5 General Information Model Cooling capacity(ton) Optional electric heater (kW) LIAH024-200U432 LIAH036-200U432 LIAH048-200U432 LIAH060-200U432 Motor @ 230V ~, 60Hz Model LIAH024-200U432 LIAH036-200U432 LIAH048-200U432 LIAH060-200U432 Unit: mm Model Filter size LIAH024-200U432 490×516×15 LIAH036-200U432 LIAH048-200U432 525×516×15... -
Page 11: Preparative For Installation
Air Handlers NOTES: ①. Based upon W/nominal tonnage, dry coil and filter should be installed. ②. Use 0.96 as approximate SCFM correction factor for wet coil. 3 Preparative for Installation 3.1 Pre-Installation Instruction 3.1.1 Checking Product Received After receiving the product, please check if there is any damage caused by transportation. - Page 12 Air Handlers all safety information and instructions accompanying these symbols. Failure to heed safety information increases the risk of serious personal injury or death, property damage and/or product damage. Immediate hazards which will result in property damage, product damage, severe personal injury or death. Hazards or unsafe practices could result in property damage, product damage, severe personal injury or death.
- Page 13 Air Handlers located in the unit control box and also connecting to the building electric service panel. Other methods of grounding are permitted if performed in accordance with the “National Electric Code” (NEC)/ “American National Standards Institute” (ANSI)/ “National Fire Protection Association”...
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Page 14: Installation
Air Handlers 4 Installation 4.1 Unit Inspection Upon delivery, inspect the unit for damage. Any damage must be reported immediately to the carrier. Do not install such an equipment damaged by freight which determines the integrity and safety of the unit. Please check the equipment model number to ensure the unit is appropriately sized for the condensing unit. -
Page 15: Piping Work
Air Handlers 4.3 Piping Work 4.3.1 Specification of Connection Pipe External diameter (inch) Model Gas pipe Liquid pipe LIAH024-200U432 LIAH036-200U432 Φ3/4 Φ3/8 LIAH048-200U432 LIAH060-200U432... - Page 16 Air Handlers 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.
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Page 17: Condensate Removal
Air Handlers 4.3.2.2 Screw Connection Pipe diameter (inch) Tightening torque (N·m) Φ1/4 15-30 Φ3/8 35-40 Φ1/2 45-50 Φ5/8 60-65 Φ3/4 70-75 Φ7/8 80-85 4.4 Condensate Removal It is not allowed to connect the condensate drain pipe into waste pipe or other pipelines which are likely to produce corrosive or peculiar smell to prevent the smell from entering indoors or corrupt the unit. -
Page 18: Ductwork
Air Handlers 4.5 Ductwork This air handler is designed for a complete supply and return ductwork system. Do not operate the unit without all ductwork completed. Do not operate this product without all ductwork attached. Inadequate ductwork that restricts airflow can result in improper performance and compressor or heater failure. - Page 19 Air Handlers 4.6.1 Electric Heater Kits Available Ref. air handler Description use(ton) 21-4216-00 Circuit breaker, 8kW heat strip 2.0/3.0 21-4217-00 Circuit breaker, 15kW heat strip 4.0/5.0 4.6.2 Electric Heater Kits Installation Ensure that all power supply is disconnected prior to installing the heater kit. A means of strain relief and conductor protection must be provided at the supply wire entrance into cabinet.
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Page 20: Electrical Installation
Air Handlers 10) Connection of power cords and thermostat wires. 4.7 Electrical Installation 4.7.1 Requirement and Notice on Electrical Installation The electrical installation for the air conditioner should observe the following requirements: ①. The electrical installation must be conducted by professionals in compliance with local laws and regulations and the instructions in this manual. - Page 21 ⑨. 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.
- Page 22 Maximum Model Power supply circuit overcurrent ampacity (A) protection (A) LIAH024-200U432 LIAH036-200U432 208/230V-1Ph-60Hz LIAH048-200U432 LIAH060-200U432 ①. Fuse is located on the main board. ②. Install a circuit breaker at every power terminal near the units (indoor unit and thermostat) with at least 3mm contact gap. The units must be able to be plugged or unplugged.
- Page 23 Air Handlers 3) Use nippers to bend the solid wire into a ring that fits the terminal screw. 4) Form a proper ring and then put it on the terminal board. Use a screwdriver to tighten up the terminal screw. For strand wires (as shown below): 1) Use wire cutters to cut off the wire end and then peel away about 10mm of the insulation layer.
- Page 24 Air Handlers ①. Before working, please check whether the indoor unit and thermostat are powered on. ②. Match the terminal numbers and wire colors with the colors indicated in the indoor unit. ③. Wrong wire connection may burn the electrical components. ④.
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Page 25: Installation Check And Trial Run
Air Handlers air conditioner may get damaged. ⑥. Ground the unit through connecting the ground wire. ⑦. The units should comply with applicable local and national rules and regulations on power consumption. ⑧. When connecting the power cords, make sure the phase sequence of the power supply matches with the corresponding terminals, otherwise the compressor will get reversed and operate abnormally. -
Page 26: Trial Run
Air Handlers 5.2 Trial Run 5.2.1 Preparative for Trial Run Never power on the unit until all the installation work has been done. All the control circuit and wiring has been connected correctly and soundly. Valves on the gas and liquid line should be completely open. All the scattered objects should be removed, especially metal filing, thrum and clip. -
Page 27: Common Malfunction And Elimination
Draw curtain or louver. Too much heat source in the Reduce heat source. room. Filter screen is blocked by Clean the filter. dirt. NOTE: If reasons are still unclear after checking above items, please contact LENNOX service center and show phenomena and models. - Page 28 Air Handlers Following circumstances are not malfunction. “Malfunction” Reason When unit is started Overload protection switch immediately after it is just makes it run after 3 minutes turned off. delay. Unit doesn’t run. Standby operating for about 1 When power is turned on. minute.
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Page 29: Maintenance And Care
Air Handlers Different running indicator flashing light means different system failure. malfunction Running Indicator status Remark Indoor Jumper cap failure Light out 3S then flash once Indoor fan failure Light out 3S then flash Flash means light on twice 0.5S then light out 0.5S Indoor tube temperature Light out 3S then flash sensor failure... - Page 30 Air Handlers 8 After-Sales Service In case the air-conditioning unit you bought has any quality problem or you have any inquiry, please contact the local after-sales service agency designated by factory. Warranty should meet the following requirements: First run of the unit should be operated by professional personnel from factory appointed service center.