Seiki SC-7500AU6A User manual

7.5kW AIR
CONDITIONER
SC-7500AU6A
INSTALLATION
MANUAL
Please read this manual carefully before using, and keep it for future reference.

General Safety 4
Selecting Installation Place 5
Installation of Indoor Unit 7
Installation of Outdoor Unit 9
Is the Unit Installed Correctly? 14
Self Diagnosis Functions 15
Specifications 17
Customer Service 20
CONTENTS

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Read this manual thoroughly before you start installing the Split system air con.
Store this manual, the completed warranty card, your receipt and the product packaging.
The safety precautions instructions reduces the risk of fire, electric shock and injury when
correctly complied to.
Please follow all instructions and take notice of all warnings.
GENERAL SAFETY
These installation instructions for the Air conditioner are for use by an appropriately
qualified, licensed installer. The appliance mst be installed in accordance with all
applicable regulations. Do not try to install the Air conditioner on your own, doing so will
expose you to danger and void the warranty.
IMPORTANT INFORMATION
• Before installing this Aircon, make sure your outlet voltage corresponds to the voltage
stated on the power supply rating label.
• The ratings of the fuse installed in the indoor unit is 3.15A/250V,
and outdoor unit is 30A/250V
• DO NOT INSTALL THE UNIT
- In environments where the air could contain gas, oil or sulphur.
- Near sources of heat.
- At a distance of less than 50cm from flammable substances and pressurised containers.
• If the appliance is used in areas without sucient ventilation, precautions must be taken to
prevent any leaks of refrigerant gas from remaining in the environment and creating a fire.
• Make sure that the base of the outdoor unit is firmly fixed.
• Check the air cannot enter the refrigerant system and check for refrigerant leaks
when moving the air con unit.
• Ensure that the mains voltage corresponds to that stamped on the rating plate.
• You must protect the indoor unit with a fuse of suitable capacity for the maximum
input current or with another overload protection device.
• Carry out a test cycle after installing the air con and record the operating data. Make
sure that air cannot enter the refrigerant system and check for any leaks when moving
the air con.

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INDOOR UNIT
• Install the indoor unit level on a strong wall that is not subject to vibrations.
• The inlet and outlet port should not be obstructed, the air should be able to blow all
over the room.
• Do not install the unit near a source of heat, steam or flammable gas.
• Install the unit near an electric socket or private circuit.
• Do not not install this unit where it will be exposed to direct sunlight.
• Do no install unit in the laundry.
• Install the unit where connection between indoor and outdoor unit is easy.
• Install unit where it is easy to drain condensation water.
• Install unit where the filter can be easily accessed.
These installation instructions for the Air conditioner are for use by an appropriately
qualified, licensed installer. Do not try to install the air conditioner on your own; doing so
will expose you to danger and void the warranty. Contact a licensed installer.
PROTECT YOUR WARRANTY
SELECTING INSTALLATION PLACE

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OUTDOOR UNIT
• DO NOT INSTALL THE UNIT
Near heat sources, steam or flammable gas.
Exposure to high winds or dust.
• Avoid installing in direct sunlight.
• Where the air discharge and sound level will not disturb neighbours.
• Leave minimum clearences around the unit for free air circulation.
• If the outdoor unit is vibrating, place rubber gaskets on the feet of the unit.
• The method of fixing is not to depend on the use of adhesives since they are not
considered to be a reliable fixing means.
SELECTING INSTALLATION PLACE (Cont.)
MINIMUM DISTANCES FOR INSTALLATION

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INSTALLATION OF INDOOR UNIT
1. Installation of Wall Mounting Plate
• Make sure the plate is completely level by using a spirit level, if mounting plate is
slanted it can hinder the smooth discharge of the condensed water.
• Mark and drill mounting holes corresponding with the mounting holes in the
mounting plate.
• Fix the wall mounting plate firmly on the wall with screws.
The method of fixing is not to depend on the use of adhesives since they are not considered
to be a reliable fixing means. *(Mounting hardware not supplied)
2. ACCESS TO PIPING
• Drill holes at places slightly below the wall mounting plate corresponding with where the
piping and drain outlet exit the indoor unit with hole diameter of 65mm starting from the
inside wall, and make the outside wall 5-10mm lower so the water can smoothly flow out.
• Cut the wall penetrating pipe to correct length according to the thickness of the wall and
add 5mm extra length longer then the wall thickness and insert the pipe as indicated.
3. INSTALLATION OF DRAIN PIPE
• Install the piplines of the indoor unit in accordance with the wall hole.
• Wrap tightly the drain pipe and the pipelines with trap, Make sure the drain pipe is
underneath the pipelines of indoor unit.

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4. INSTALLATION OF INDOOR UNIT
• Pass the connection wires, connecting pipelines and drain pipe through the wall hole.
• Hang the indoor unit on the hook of the top of the wall mounting plate so that the
hooks at the bottom of the indoor unit match the hook of the wall mounting plate.
5. INSPECTIONS
• Check if the hooks on the mounting plate and unit at the top or bottom are firmly fixed.
• Check that the indoor unit is properly level.
• The drain pipe should not curve upward (refer to picture below).
• The drain pipe should be at the lower part of the wall pipes. (refer to below).
INSTALLATION OF INDOOR UNIT (Cont.)

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• Use caution when hoisting cables to lift the unit as the centre of balance is not at the
installation centre.
• Use expansion bolts to fix the mounting supports on the wall.
• Use bolts and nuts to fix the outdoor unit firmly on the supports and keep on the
same level.
• If the unit is installed on the wall or rooftop, the supports have to be firmly fixed so it
can resist strong weather conditions.
ORDINARY PIPELINE CONNECTIONS AND AIR PURGING
No dust, foreign objects, air or moisture should be allowed to enter the air conditioning
system. Careful attention should be paid when the pipeline connection to the outdoor unit
is made. Try to avoid curves as much as possible, as hardening or cracks may occur to the
copper pipes. Suitable wrenches should be used when the pipeline connection is done, so
as to ensure appropriate torque (refer to torque table below). Excessive torque may damage
the joints, while too little torque may lead to leakage.
TORQUE BASED UPON THE WRENCH TO BE USED
INSTALLATION OF OUTDOOR UNIT

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INSTALLATION OF OUTDOOR UNIT (Cont.)
1. Check that the pipeline connections have
been properly connected. Remove the
charging port cap, then connect the
manifold gauge and the vacuum pump to
the charging valve by the service hoses,
(shown in drawing).
2.Open the valve on the low pressure side
of the manifold gauge, then run the
vacuum pump. Vacuum the indoor unit
and the connecting pipes until the
pressure in them lowers to below
1.5mmGH (the operation time for this
should be about 10 minutes).
When the desired vacuum level is reached,
close the low pressure valve on the
manifold, then stop the vacuum pump.
3.Disconnect the service hoses, then fit
the cap to the charging valve.
4.Remove the blank caps, then fully open
the spindles on the 2-way and 3-way
valves with a service valve wrench.
5. Tighten the blank caps on the 2-way
and 3-way valves, according to the
previous torque Table 1.
ADDING REFRIGERANT
Refrigerant must be added if the piping measures more than 5 metres (16’5”) in length. This
operation can only be performed by a professional technician. For the refrigerant amount,
please refer to the table below.
Additional Refrigerant Amount
Liquid pipe diameter Ø6.35 (1/4”) Liquid pipe diameter Ø9.52 (3/8”)
(piping length-5)mx30g
or (piping length-16)ftx0.3oz
(piping length-5)mx65g
or (piping length-16)ftx0.7oz

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INSTALLATION OF OUTDOOR UNIT (Cont.)
GAS LEAKAGE INSPECTION
After the pipeline connections are done, use a leakage inspection device or soap
suds to carefully check if there is any leakage at any joints. This is an important step to
ensure the quality of the installation. Once a leakage is detected, proper treatment should
be taken immediately.
PIPELINE CONNECTIONS FOR SPLIT TYPE QUICK COUPLER
If you purchase the unit for split type quick couple model, please follow these pipeline
connection procedures:
1. Remove the dust caps from the indoor and
outdoor units, and the connecting pipe.
2. Align the joint counter of the connecting
pipe with the proper indoor and outdoor
joint conic surfaces, tightening the
connecting nut manually. Then make is
secure with a wrench (as shown in drawing),
according to the torque Table on page 10.
3. Remove the two valve core caps from the
outdoor unit.
4. Turn the high and low pressure valve cores
with a socket wrench, then tighten the two
valve core caps of the outdoor unit (Fig 8).
5. Finally, wrap hot insulating cotton around
the joints of the indoor and outdoor units.
1. See the connecting pipe bending minimum radius parameters.
2. Quick coupler assembly and disassembly limit: the assembly and disassembly
times are inadvisably more than 7.
Normal Diameter (mm) Minimum Bending Radius (mm) Cooling Capacity
DN10-12(1/2”) 100 (4”) 2500 ~ 5100W
(9000-18000BTU)

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INSTALLATION OF OUTDOOR UNIT (Cont.)
CONNECTION OF POWER CABLE
1. Remove the connection panel of the outdoor unit.
2. Non-quick Coupler: Connect the indoor power
and control wires with the matching outdoor wires
in accordance with the electric schematic diagram
on each unit, making sure that the connection
is secure.
Quick Coupler: Directly connect the quick cable
couplers with indoor and outdoor quick cable
couplers after the disassebly of the outdoor unit.
3. Use a press plate to fix the wires firmly into
place, then reinstall the connection panel.
4. Option steps: If present in the unit, you should
connect the indoor wire connector with the outdoor
probe wire connector for defrosting.
WARNING
• Do not connect the wires the wrong way around, otherwise malfunction or damaging the
unit can occur.
• The appliance shall be installed in accordance with national wiring regulations.
• If the supply cord is damaged, it must be replaced by the manufacturer or a qualified
service agent in order to avoid hazard.

13
INSTALLATION OF OUTDOOR UNIT (Cont.)
FINAL TOUCHES
• Wrap the pipelines tightly with ethylene tape.
• Fix the wrapped pipelines to the exterior walls with clamps.
• Fill in any gaps left over from the pipeline holes in the wall to prevent rain water
from entering and from air drafts.
TEST RUNNING
• Connect units to power, then check that the function selection keys on the remote
control are working correctly.
• Check that the room temperature adjustments and timer settings are working correctly.
• Check that the drainage system is smooth and operational.
• Check for any abnormal noises, vibrations or smells.
• Check for any leakage of refrigerant.

14
IS THE UNIT INSTALLED CORRECTLY?
SUITABLE INSTALLATION POSITION
• Is there anything that prevents ventilation, or obstructs operation and eective air flow
in front of the indoor unit?
• Do not install in locations where flammable gases may leak or oil splashes often.
• In seaside districts where sea breezes will be encountered by the unit, the high
salt content in the air often leads to early corrosion. Please monitor the unit over time.
• The air-conditioner should be at least 1 metre away from TVs or radios.
• The dehumidified water should be drained into a location that drains water well.
OPERATION NOISE
• When installaing the unit, choose a location that can stand the weight of the unit, that
will not increase the operation noise or vibration. If the vibrations are transmitted to
the house itself, place the unit with vibration-proof pads (not supplied) between the
unit and the fittings.
• Choose the place where hot air and operation noise from the outlet of the outdoor
unit does not annoy neighbours.
• Things left near the outlet and inlet of the outdoor unit may cause malfunction or
increased operation noise.
• If irregular sound is heard during operation, contact our customer support centre.
INSPECTION AND MAINTENANCE
• According to operating environments the inside of the air conditioner will become dirty
after a few years (3-5) of service, which will result in decreased operating performance.
Inspection and maintenance are recommended in addition to the usual cleaning.
• Only use qualified air conditioner technicians to inspect and perform maintenance checks
on your air conditioner and commenced during the o-season period when aircon is not
in use.
• Ensure all indoor and outdoor units have been switch o from the power source before
any inspection or cleaning is carried out.

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SELF DIAGNOSIS FUNCTIONS
The air-conditioner has sensors and a self diagnosis system which will display error codes
when an issue is detected.
Self Check Information Indicator Behaviour Error Code Behaviour
Defrost Indication 1 flash per second “dF” or a Heating icon
Room Temperature Sensor
Fault 1 flash per second E2
Coil Temperature Sensor 1 flash per 8 seconds E3
External Feedback Fault 7 flashes per 8 seconds E7
Outdoor Tube Temperature
Sensor Faults 4 flashes per 8 seconds E1
(EEPROM) Communication
failures 6 flashes per 8 seconds E6
Outside Temperature
exceeds operational range 1flash per second FF

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SPECIFICATIONS
Capacity
COOLING 7500W (7.5kW)
HEATING 8200W (8.2kW)
Max. Current Input
COOLING 10.4 A
HEATING 11.4 A
Max. Power Input
COOLING 2270 W
HEATING 2480 W
Room Size Suitability 42-52 m²
Rated Voltage and Frequency 220-240V AC / 50Hz
Ingress Protection OUTDOOR UNIT IP24
Net Weight
INDOOR UNIT 22 kg
OUTDOOR UNIT 58 kg
Max. Pressure
DISCHARGE 4.2 MPa
SUCTION 1.2 MPa
Refrigerant Type
TYPE R410A
QUANTITY 2100 g
Noise Level
INDOOR UNIT 46-51 dB(A)
OUTDOOR UNIT 57 dB(A)
Dimensions
INDOOR UNIT (mm) 332 (h) x 1300 (w) x 245 (d)
OUTDOOR UNIT (mm) 835 (h) x 900 (w) x 330 (d)

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CUSTOMER HELPLINE:
1300 296 699
DISTRIBUTED BY:
AYONZ PTY LTD