Lennox 4 Series User manual

LENNOX MULTI SPLIT INVERTER
AIR CONDITIONER
Installation Manual
Slim Line Ducted Indoor Unit - Series 4

213 23 50 |lennoxaus.com.au
CONTENTS
1.0. Safety Precautions 4
2.0. Installation Location 6
3.0. Installation Instructions 8
4.0. Rated Working Conditions 25
5.0. Troubleshooting 26
6.0. Maintenance 27
LENNOX MULTI SPLIT INVERTER
Slim Line Ducted Indoor Unit

13 23 50 |lennoxaus.com.au 3
This appliance is not intended for use by persons (including children) with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge, unless
they have been given supervision or instruction concerning use of the appliance by a
person responsible for their safety.
Children should be supervised to ensure that they do not play with the appliance.
Please read this manual carefully before operating the unit and keep it in a safe
location for future reference.
Installation or maintenance should always be conducted by an authorized dealer or
local service centre.
Only use the air conditioner as instructed in this booklet. These instructions are not
intended to cover every possible condition and situation. As with any electrical
household appliance, common sense and caution are therefore always recommended
for installation, operation and maintenance.
This marking indicates that this product should not be disposed with other household
wastes throughout Australia. 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 environmentally safe recycling.
The design and specifications here within are subject to change without notice for product
improvement. Please consult with Customer Service for further details.
LENNOX MULTI SPLIT INVERTER
Slim Line Ducted Indoor Unit
Applicable to Model Numbers:
• LNMTDSS035V4
• LNMTDSS050V4
• LNMTDSS060V4
• LNMTDSS071V4

1.0. SAFETY PRECAUTIONS
1.1. Explanation of Symbols
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.
Indicates a hazard that would be assigned a signal word WARNING or
CAUTION.
1.2. Operation and Maintenance
• Never connect the unit to a multi-purpose socket outlet, as this may cause a fire hazard.
• Always disconnect power supply when cleaning the air conditioner, to minimise the risk of electric
shock, injury or damage to the appliance.
• Never install or operate an air conditioner with a damaged supply cord. This must be replaced by
the manufacturer, its service agent or similarly qualified persons to avoid a hazard.
• Never wash the air conditioner with water, as this may cause electric shock, injury or damage to
the appliance.
• Maintenance must always be peormed by qualified personnel. Never attempt to repair the
air conditioner yourself, as this may cause electric shock, injury or damage. Please contact an
authorised service provider for all repairs and maintenance.
• Do not extend fingers or objects into the air inlet or air outlet, as this may cause personal injury or
damage.
• Do not block the air outlet or air inlet, as this may cause damage or malfunction, or aect
peormance of the unit.
4
DANGER
WARNING
CAUTION
NOTICE
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LENNOX MULTI SPLIT INVERTER
Slim Line Ducted Indoor Unit

5
• If the following occurs, please turn o air conditioner and disconnect power immediately, and
contact the dealer or a qualified professional for service.
• Power cord is overheating or damaged.
• There is an abnormal sound during operation.
• Circuit breaker trips frequently.
• Air conditioner gives o a burning smell.
• Indoor unit is leaking.
• If the air conditioner operates under abnormal conditions, it may cause a malfunction, electric
shock or a fire hazard.
• Never use a metal object when turning the indoor unit on or o by the emergency operation switch,
as this may cause electric shock or injury.
• Never step on the top panel of the outdoor unit or place heavy objects on it, as this may cause
damage or personal injury.
1.3. Installation
• Installation must be peormed by qualified professionals. Otherwise, it may cause personal injury
or damage.
• The air conditioner must be installed in accordance with national and local wiring regulations,
codes and standards.
• An all-pole disconnection switch having a contact separation of at least 3mm in all poles should
be connected in the fixed wiring.
• Always ensure the power supply matches with the nameplate of the air conditioner. Unstable
power supply or incorrect wiring will cause malfunction. Always install the correct power supply
cables before operating the air conditioner.
• Always disconnect the power supply before proceeding with any work on the air conditioner.
• Do not supply power to the unit before finishing installation.
• Never install or operate an air conditioner with a damaged power supply cable. This must be
replaced by the manufacturer, its service agent or similarly qualified persons to avoid a hazard.
• The temperature of refrigerant circuit will be high, always keep the interconnection cable away
from the copper tube.
• The air conditioner is a Class 1 electric appliance. It must be properly earthed using a specialised
earthing device installed by a professional, otherwise it may cause electric shock.
• The yellow-green wire in air conditioner is the earth wire. The earth wire cannot be used for other
purposes.
• The earthing resistance should comply with national and local electrical safety regulations, codes
and standards.
• The indoor unit and outdoor unit must be connected by a qualified professional.
13 23 50 |lennoxaus.com.au
LENNOX MULTI SPLIT INVERTER
Slim Line Ducted Indoor Unit

6
2.0. INSTALLATION LOCATION
The installation of the unit must comply with all national and local safety regulations. The installation
quality directly aects the normal use of the unit, installation and troubleshooting of the unit should
be installed by a qualified technician.
2.1. Indoor Unit Location
The indoor unit should be installed in a location:
• Where there is no direct sunlight.
• Where the top hanger, ceiling and the building structure are strong enough to withstand the weight
of the unit.
• Where the drain pipe can be easily connected to outside.
• Where the flow of the air inlet and outlet are not blocked.
• Where the refrigerant pipe of the indoor unit can be easily led outside.
• Where there are no flammable or explosive substances or vapours.
• Where there is no corrosive gas, heavy dust, salt mist, smog or moisture.
Avoid installing the unit in the following areas, as peormance and operation may be aected.
• High concentrations of oil;
• Exposure to salt air, dust or sand;
• Where sulfur gas is presence (i.e. sulfur hot springs);
• Near high frequency devices (i.e. wireless devices, electric welding devices, or medical equipment).
2.2. Electrical Wiring
• The installation must be conducted in accordance with local and national wiring regulations,
codes and standards.
• Only the power cord with the rated voltage and specified circuit for air conditioner can be used.
CAUTION
CAUTION
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LENNOX MULTI SPLIT INVERTER
Slim Line Ducted Indoor Unit

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• Do not apply excessive force to the power cord.
• The electrical installation should be carried out by the technician as instructed by the local and
national regulations, codes and standards. This manual should be followed.
• The diameter of the power cord should meet the recommendations in Table 9. Always replace a
damaged power cord with the equivalent specified cord.
• Always ensure the unit is correctly earthed and the earth wire is connected to the dedicated device
of the building by the technician. Select the air switch coupled with the leakage current protection
switch as perTable 9 recommendations to meet capacity, magnetic and thermal tripping functions
in the event of a short circuit and overload.
2.3. Earthing Requirements
• The air conditioner is classified a Class I appliance and must be earthed.
• The yellow-green wire is the earth line and cannot be: used for any other purpose, cut o, or fixed
by a self-tapping screw. Incorrect installation cause electrical hazard including electric shock or
death.
• A suitable earth terminal should be provided, and the earth wire must not be connected to any of
the following places:
1. Potable water pipes;
2. Gas pipes;
3. Sewage pipes;
4. Telecommunications earth wires.
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LENNOX MULTI SPLIT INVERTER
Slim Line Ducted Indoor Unit

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3.0. INSTALLATION INSTRUCTIONS
3.1. Indoor Unit Dimensions
NOTICE:
• All dimensions are listed in millimetres (mm), unless otherwise specified. Figure 1 is applicable to
LNMTDSS025V4, LNMTDSS035V4, LNMTDSS050V4, LNMTDSS060V4 and LNMTDSS071V4:
Figure 1: Indoor Unit Dimensions
Table 1: Indoor Unit Dimensions
Model A B C D E F G H I J
LNMTDSS025V4 742 491 662 620 700 615 782 156 200 635
LNMTDSS035V4 742 491 662 620 700 615 782 156 200 635
LNMTDSS050V4 942 491 862 820 900 615 982 156 200 635
LNMTDSS060V4 1142 491 1062 1020 1100 615 1182 156 200 635
LNMTDSS071V4 1142 491 1062 1020 1100 615 1182 156 200 635
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LENNOX MULTI SPLIT INVERTER
Slim Line Ducted Indoor Unit

9
3.2. Indoor Unit Installation Space Requirements
NOTICE:
• All dimensions are listed in millimetres (mm), unless otherwise specified.
Figure 2: Indoor Unit Installation Space Requirements
3.3. Indoor Unit Installation
a. Installation Location Requirements
• Ensure the hanger is strong enough to withstand the weight of the unit.
• Ensure condensate drain pipe has enough fall to ensure good drainage flow.
• Ensure no obstructions to the inlet / outlet grille and adequate air circulation.
• Ensure the minimum clearances shown in Fig.2 are provided for maintenance access.
• Locate the unit away from heat sources, flammable or explosive substances, or smog.
• The unit is a concealed ceiling unit and should be mounted in the ceiling space, with appropriate
access provided.
• The power cables and connection wiring of the indoor and outdoor units must be at least 1m
away from TVs or radios to avoid inteerence and noise (the unit may still cause inteerence at
greater distances).
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LENNOX MULTI SPLIT INVERTER
Slim Line Ducted Indoor Unit

b. Installation of the Indoor Unit
1. Drill hole suitable for the M10 expansion bolt. Insert the M10 expansion bolt into the hole, and then
knock the nail into the bolt. Refer to the drawings for the distance between holes and see Figure 3
for the installation of the expansion bolt.
Figure 3: Installation of the Expansion Bolt
2. Install the hanger on the indoor unit, as shown in Figure 4.
Figure 4: Installing the Hanger
3. Install the indoor unit on the ceiling, as shown in Figure 5.
Figure 5: Installing the Indoor Unit
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LENNOX MULTI SPLIT INVERTER
Slim Line Ducted Indoor Unit