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Related Manuals for Lennox LIAH024-200U432-STDESP
Summary of Contents for Lennox LIAH024-200U432-STDESP
- Page 1 Air Handler OWNER'S MANUAL LENNOX A I R CO ND I T I O NE RS MO D E L: LIAH024-200U432-STDESP LIAH036-200U432-STDESP LIAH048-200U432-STDESP LIAH060-200U432-STDESP Thank you for selecting LENNOX air conditioners.Please read this manual carefully before operation and keep it for further reference.
- Page 2 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...
- Page 3 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 4: 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 5 8 After-Sales Service ............22 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. To return your used device, please use the return and collection systems or contact the retailer where the product was purchased.
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Page 6: 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 7: 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 8: Physical Dimension
Air Handlers 2.3 Physical Dimension Unit: inch(mm) Dimension Model LIAH024-200U432-STDESP 21-1/4(540) 21-1/4(540) 48-1/4(1224) 11-5/8(295) 20(508) LIAH036-200U432-STDESP LIAH048-200U432-STDESP 24-3/4(630) 21-1/4(540) 57(1448) 11-5/8(295) 20(508) LIAH060-200U432-STDESP... -
Page 9: 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-STDESP LIAH036-200U432-STDESP LIAH048-200U432-STDESP LIAH060-200U432-STDESP Motor @ 230V ~, 60Hz Model LIAH024-200U432-STDESP LIAH036-200U432-STDESP LIAH048-200U432-STDESP LIAH060-200U432-STDESP Unit: mm Model Filter size LIAH024-200U432-STDESP 490×516×15 LIAH036-200U432-STDESP LIAH048-200U432-STDESP 525×516×15... -
Page 10: 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 11 Air Handlers immediate or potential hazards. It is the owner’s responsibility to read and comply with 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.
- Page 12 Air Handlers circuit may consist of an appropriate sized power cord which connected with the grounding piece 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”...
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Page 13: 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 14: 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-STDESP LIAH036-200U432-STDESP Φ3/4 Φ3/8 LIAH048-200U432-STDESP LIAH060-200U432-STDESP 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... -
Page 15: 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 16: Ductwork
Air Handlers It is not allowed to connect the condensate drain pipe into rain pipe to prevent rain water from pouring in and cause property loss or personal injury. Condensate drain pipe should be connected into special drain system for air conditioner. -
Page 17: Electric Heater
Air Handlers 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 kit for the correct installation procedure. Refer to the “installing electric heater”... -
Page 18: Electrical Installation
Air Handlers 6) Insert power leads into the circuit breaker lugs or stripped red and black wires (for heater kit without circuit breaker) and tighten. 7) Connect ground wire to ground lug. 8) Knock off appropriate area of the plastic circuit breaker cover on the access panel of the air handler. - Page 19 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. ⑩. Wiring terminals should be connected firmly to the terminal board. Loose connection is forbidden.
- Page 20 Maximum Model Power supply circuit overcurrent ampacity (A) protection (A) LIAH024-200U432-STDESP LIAH036-200U432-STDESP 208/230V-1Ph-60Hz LIAH048-200U432-STDESP LIAH060-200U432-STDESP 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 21 Air Handlers 4.7.3 Connection of Power Cords and Thermostat Wires For solid wires (as shown below): 1) Use wire cutters to cut off the wire end and then peel away about 25mm of the insulation layer. 2) Use a screwdriver to unscrew the terminal screw on the terminal board. 3) Use nippers to bend the solid wire into a ring that fits the terminal screw.
- Page 22 Air Handlers How to connect the thermostat wires and power cords. Lead the thermostat wires and power cords through the insulation tube. Then fix the wires with wire clamps (as shown in the following figure.) ①. Before working, please check whether the indoor unit and thermostat are powered on.
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Page 23: Installation Check And Trial Run
Air Handlers ①. High and low voltage wires should be led through different rubber rings of the electric box cover. ②. Do not bundle up the thermostat wires or lay them side by side, otherwise errors will occur. ③. High and low voltage wires should be secured separately. Secure the former ones with big clamps and the latter ones with small clamps. -
Page 24: Trial Run
Air Handlers Problems might happen due to Items to be checked Check improper installation Check if the unit has been earthed Hazard of electricity leakage. soundly. Check if the wiring conforms to the Malfunction might happen and parts wire gage. might be burned. -
Page 25: 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 26: Maintenance And Care
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. -
Page 27: Maintenance After Seasonal Use
Air Handlers Check if the unit is installed firmly. If there is something abnormal, please contact the local appointed service center. 7.3 Maintenance after Seasonal Use Cut off main power supply of the unit. Clean filter screen of indoor units. Clean the dust of sundries on the indoor units.