Lennox LIAH024-200U432-STDESP User manual

Air Handler
Thank you for selecting LENNOX air conditioners.Please read this manual
carefully before operation and keep it for further reference.
OWNER'S MANUAL
LENNOX AIR C O NDITI ONER S
MODE L:
LIAH036-200U432-STDESP
LIAH060-200U432-STDESP
LI012HI-160P432
LI012HI-160P432
LIAH024-200U432-STDESP
LIAH048-200U432-STDESP

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 expected operating effect, we hereby instruct as below:
(1) This appliance can be used by children aged from 8 years and above and
persons with reduced physical, sensory or mental capabilities or lack of
experience and knowledge if they have been given supervision or instruction
concerning use of the appliance in a safe way and understand the hazards
involved. Children shall not play with the appliance. Cleaning and user
maintenance shall not be made by children without supervision.
(2) In order to ensure reliability of product, the product may consume some power
under stand-by status for maintaining normal communication of system and
preheating refrigerant and lubricant. If the product is not to be used for long,
cut off the power supply; please energize 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
disassemble the unit by yourself. You can contact with the special
maintenance center of our company if necessary.
(5) When the product is faulted and cannot be operated, please contact with our
maintenance center as soon as possible by providing the following
information.
1)Contents of nameplate of product (model, cooling/heating capacity, product
No., ex-factory date).
2)Malfunction status (specify the situations before and after the error occurs).
(6) All the illustrations and information in the instruction manual are only for
reference. In order to make the product better, we will continuously conduct
improvement and innovation. We have the right to make necessary revision to

the product from time to time due to the reason of sales or production, and
reserve the right to revise the contents without further notice.
(7) If the supply cord is damaged, it must be replaced by the manufacturer, its
service agent or similarly qualified persons in order to avoid a hazard.
(8) LENNOX assumes no responsibility for personal injury,
property loss or equipment damage caused by improper installation and
commissioning, unnecessary maintenance, or not following relevant national
rules and regulations, industrial standards and requirements in this instruction
manual.
(9) 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:
(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 during transportation
of product.
(5) Operate, repair, maintain the unit without abiding by instruction manual or
related regulations.
(6) After verification, the problem or dispute is caused by the quality specification
or performance of parts and components that produced by other
manufacturers.
(7) The damage is caused by natural calamities, bad using environment or force
majeure.

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.......................................................................... 8
4.1 Unit Inspection .......................................................................8
4.2 Location .................................................................................8
4.3 Piping Work............................................................................9
4.4 Condensate Removal...........................................................10
4.5 Ductwork..............................................................................11
4.6 Electric Heater .....................................................................12
4.7 Electrical Installation ............................................................13
5 Installation Check and Trial Run .................................... 18
5.1 Checking Items after Installation ..........................................18
5.2 Trial Run ..............................................................................19
6 Common Malfunction and Elimination .......................... 20
7 Maintenance and Care..................................................... 21
7.1 Drain Pipe ............................................................................21
7.2 Notice before Seasonal Use.................................................21
7.3 Maintenance after Seasonal Use .........................................22
7.4 Parts Replacement...............................................................22

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. They can take this
product for environmental safe recycling.

Air Handlers
1
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. As for above special places, please adopt special air
conditioner with anti-corrosive or anti-explosion function.
Improper installation, adjustment, alteration, service, maintenance, or use can
cause explosion, fire, electrical shock, or other conditions which may cause death,
personal injury, or property damage. Consult a qualified installer, service agency, or
your distributor or branch for information or assistance. The qualified installer or
agency must use factory--authorized kits or accessories when modifying this
product. Refer to the individual instructions packaged 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 requirements. Recognize safety
information. This is the safety--alert symbol .
When you see this symbol on the unit and in instructions or manuals, be alert to
the potential for personal injury. Understand these signal words: DANGER,
WARNING, CAUTION and NOTICE. These words are used with the safety--alert
symbol.
Indicates a hazardous situation that, if not avoided, will result in
death or serious injury.
Indicates a hazardous situation that, if not avoided, could result
in death or serious injury.
Indicates a hazardous situation that, if not avoided, may result
in minor or moderate injury.
Indicates important but not hazard-related information, used to
indicate risk of property damage.

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2
Electrical shock hazard:
Failure to follow this warning could result in personal injury or death.
Before installing, modifying, or servicing system, main electrical disconnect
switch must be in the OFF position. There may be more than 1 disconnect switch.
Lock out and tag switch with a suitable warning label.
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'ty
Usage
1 Throw-over
pipe
1
Connect the
unit with the
liquid pipe
2 Throw-over
pipe
1
Connect the
unit with the
gas pipe

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2.3 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-STDESP
LIAH060-200U432-STDESP
LIAH024-200U432-STDESP
LIAH048-200U432-STDESP

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4
2.4 Names of Main Parts
2.5 General Information
Model
Cooling capacity(ton)
Optional electric heater (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-STDESP
LIAH060-200U432-STDESP
LIAH024-200U432-STDESP
LIAH048-200U432-STDESP
LIAH036-200U432-STDESP
LIAH060-200U432-STDESP
LIAH024-200U432-STDESP
LIAH048-200U432-STDESP
LIAH036-200U432-STDESP
LIAH060-200U432-STDESP
LIAH024-200U432-STDESP
LIAH048-200U432-STDESP

Air Handlers
5
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. Shipping damage is the responsibility of the carrier. Verify the model
number, specifications and accessories are correct prior to installation. The
distributor or manufacturer will not accept claims from dealers for transportation
damage or installation of incorrectly shipped units.
3.1.2 Before Installation
Carefully read all instructions for the installation prior to installing product. Make
sure each step or procedure is understood and any special considerations are taken
into account before starting installation. 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 any prevailing local codes/regulations. The manufacturer assumes no
responsibilities for equipment installed in violation of any codes or regulations.
3.1.4 Replacement Parts
When reporting shortages or damages, or ordering repair parts, give the
complete product model and serial numbers as stamped on the product.
Replacement parts for this product are available through your contractor or local
distributor.
3.2 Important Safety Instructions
Recognize safety symbols, words, and labels
The following symbols and labels are used throughout this manual to indicate