Manual for the Installation of
Solar Thermal Air Conditioners
Koolsola TKFR-26GW
Koolsola TKFR-35GW
Koolsola TKFR-60GW
Koolsola TKFR-72GW
Operating Instructions and Installation Guide
Wall Mounted Split System
Version 1.0
Notes to Users
We appreciate you purchasing a Koolsola Solar Air Conditioning System. With your purchase you will
enjoy the benefits of power savings and affordable comfort for many years to come.
To understand how your Koolsola Solar Air Conditioning System works and to ensure the best
performance from your System please read the following information before installing or using the
system.
1) The Koolsola Solar Air Conditioning System must be installed by a qualified, licensed Air
Conditioning Installer.
2) The ‘Installation Guide’ section on this manual is specifically for qualified, licensed Air
Conditioning Installers to refer to whilst carrying out installation.
3) Please ensure that you read the ‘Operating Instructions’ section of this manual before using
your system.
Operating Instructions and Installation Guide
Wall Mounted Split System
Version 1.0
Contents
1. General Information
1.1. System Specifications Page 5
1.2. Safety Information Page 9
1.3. System Operating Principles Page 10
1.4. System Components Page 11
2. Operating Instructions
2.1. General Operating Instructions Page 13
2.2. Remote Control Function Page 14
2.3. Routine Maintenance Page 18
2.4. Troubleshooting Page 21
3. Installation Guide
3.1. General Installation Information Page 25
3.2. Indoor Unit Installation Page 28
3.3. Outdoor Unit Installation Page 30
3.4. Evacuate Tube Solar Collector Installation Page 31
3.5. Flat Panel Solar Collector Installation Page 34
3.6. Gassing Installation Page 36
3.7. Wiring Installation Page 39
Operating Instructions and Installation Guide
Wall Mounted Split System
Version 1.0
Section 1
General Information
Operating Instructions and Installation Guide
Wall Mounted Split System
Version 1.0
1.1
System Specifications
Koolsola TKFR-26GW
Rated Cooling Capacity (Watts) 2600
Rated Heating Capacity (Watts) 2900
Rated Power Input (Volts/Hertz) 220V/50Hz/60Hz
Rated Cooling Power Input (Watts) 650 – 770
Rated Cooling Input Current (Amperes) 2.95 – 3.50
Maximum Cooling Power Input (Watts) 962
Maximum Cooling Input Current (Amperes) 4.38
Rated Heating Power Input (Watts) 650 – 780
Rated Heating Input Current (Amperes) 2.95 – 3.55
Maximum Heating Power Input (Watts) 975
Maximum Heating Input Current (Amperes) 4.44
Auxiliary Electric Heating Rated Power Input (Watts) 600
Auxiliary Electric Heating Rated Input Current (Amperes) 2.73
Inhaling Maximum Working Pressure (Megapascals) 1.15
Exhausting Maximum Working Pressure (Megapascals) 4.1
Type of Refrigerant R-410A
Standard amount of Refrigerant (grams) 800
Air Circulation of Outdoor Unit (Metres cubed/hour) 450
Waterproof Grade 1PX4
Net Weight Outdoor Unit (Kilograms) 30
Net Weight Indoor Unit (Kilograms) 8
Dimensions Outdoor Unit (Millimetres – Length/Width/Height) 790/260/540
Dimensions Indoor Unit (Millimetres – Length/Width/Height) 700/230/160
Noise Level Outdoor Unit (Decibels) < 50
Noise Level Indoor Unit (Decibels) < 40
Parameters in this table are measured in the rated working state of an outdoor temperature of 35oC dry
bulb/24oC wet bulb and an indoor temperature of 27oC dry bulb/19oC wet bulb. Working states at
varying temperatures may change.
Operating Instructions and Installation Guide
Wall Mounted Split System
Version 1.0
Koolsola TKFR-35GW
Rated Cooling Capacity (Watts) 3500
Rated Heating Capacity (Watts) 3800
Rated Power Input (Volts/Hertz) 220V/50Hz/60Hz
Rated Cooling Power Input (Watts) 800 – 1025
Rated Cooling Input Current (Amperes) 3.64 – 4.66
Maximum Cooling Power Input (Watts) 1280
Maximum Cooling Input Current (Amperes) 5.83
Rated Heating Power Input (Watts) 800 – 1050
Rated Heating Input Current (Amperes) 3.64 – 4.77
Maximum Heating Power Input (Watts) 1310
Maximum Heating Input Current (Amperes) 5.96
Auxiliary Electric Heating Rated Power Input (Watts) 800
Auxiliary Electric Heating Rated Input Current (Amperes) 3.63
Inhaling Maximum Working Pressure (Megapascals) 1.15
Exhausting Maximum Working Pressure (Megapascals) 4.1
Type of Refrigerant R-410A
Standard amount of Refrigerant (grams) 1150
Air Circulation of Outdoor Unit (Metres cubed/hour) 550
Waterproof Grade 1PX4
Net Weight Outdoor Unit (Kilograms) 38
Net Weight Indoor Unit (Kilograms) 10.5
Dimensions Outdoor Unit (Millimetres – Length/Width/Height) 790/260/540
Dimensions Indoor Unit (Millimetres – Length/Width/Height) 785/285/210
Noise Level Outdoor Unit (Decibels) < 52
Noise Level Indoor Unit (Decibels) < 42
Parameters in this table are measured in the rated working state of an outdoor temperature of 35oC dry
bulb/24oC wet bulb and an indoor temperature of 27oC dry bulb/19oC wet bulb. Working states at
varying temperatures may change.
Operating Instructions and Installation Guide
Wall Mounted Split System
Version 1.0
Koolsola TKFR-60GW
Rated Cooling Capacity (Watts) 6000
Rated Heating Capacity (Watts) 6600
Rated Power Input (Volts/Hertz) 220V/50Hz/60Hz
Rated Cooling Power Input (Watts) 1350 – 1560
Rated Cooling Input Current (Amperes) 6.14 – 7.09
Maximum Cooling Power Input (Watts) 1950
Maximum Cooling Input Current (Amperes) 8.86
Rated Heating Power Input (Watts) 1350 – 1590
Rated Heating Input Current (Amperes) 6.14 – 7.23
Maximum Heating Power Input (Watts) 2000
Maximum Heating Input Current (Amperes) 9
Auxiliary Electric Heating Rated Power Input (Watts) 1500
Auxiliary Electric Heating Rated Input Current (Amperes) 8.1
Inhaling Maximum Working Pressure (Megapascals) 1.15
Exhausting Maximum Working Pressure (Megapascals) 4.1
Type of Refrigerant R-410A
Standard amount of Refrigerant (grams) 1600
Air Circulation of Outdoor Unit (Metres cubed/hour) 850
Waterproof Grade 1PX4
Net Weight Outdoor Unit (Kilograms) 55
Net Weight Indoor Unit (Kilograms) 21
Dimensions Outdoor Unit (Millimetres – Length/Width/Height) 940/300/755
Dimensions Indoor Unit (Millimetres – Length/Width/Height) 985/325/230
Noise Level Outdoor Unit (Decibels) < 56
Noise Level Indoor Unit (Decibels) < 46
Parameters in this table are measured in the rated working state of an outdoor temperature of 35oC dry
bulb/24oC wet bulb and an indoor temperature of 27oC dry bulb/19oC wet bulb. Working states at
varying temperatures may change.
Operating Instructions and Installation Guide
Wall Mounted Split System
Version 1.0
Koolsola TKFR-72GW
Rated Cooling Capacity (Watts) 7200
Rated Heating Capacity (Watts) 7900
Rated Power Input (Volts/Hertz) 220V/50Hz/60Hz
Rated Cooling Power Input (Watts) 1700 – 1900
Rated Cooling Input Current (Amperes) 7.73 – 8.64
Maximum Cooling Power Input (Watts) 2375
Maximum Cooling Input Current (Amperes) 10.8
Rated Heating Power Input (Watts) 1700 – 1950
Rated Heating Input Current (Amperes) 7.73 – 8.64
Maximum Heating Power Input (Watts) 2440
Maximum Heating Input Current (Amperes) 10.8
Auxiliary Electric Heating Rated Power Input (Watts) 1800
Auxiliary Electric Heating Rated Input Current (Amperes) 8.18
Inhaling Maximum Working Pressure (Megapascals) 1.15
Exhausting Maximum Working Pressure (Megapascals) 4.1
Type of Refrigerant R-410A
Standard amount of Refrigerant (grams) 1800
Air Circulation of Outdoor Unit (Metres cubed/hour) 1050
Waterproof Grade 1PX4
Net Weight Outdoor Unit (Kilograms) 62
Net Weight Indoor Unit (Kilograms) 19
Dimensions Outdoor Unit (Millimetres – Length/Width/Height) 940/300/755
Dimensions Indoor Unit (Millimetres – Length/Width/Height) 985/325/230
Noise Level Outdoor Unit (Decibels) < 54
Noise Level Indoor Unit (Decibels) < 42
Parameters in this table are measured in the rated working state of an outdoor temperature of 35oC dry
bulb/24oC wet bulb and an indoor temperature of 27oC dry bulb/19oC wet bulb. Working states at
varying temperatures may change.
Operating Instructions and Installation Guide
Wall Mounted Split System
Version 1.0
Safety Information
Safety Warnings:
The Koolsola Solar Air Conditioning system should only be installed repaired and maintained by
a qualified, licensed air conditioning installer.
Please switch off the power to the system in the event of an electrical storm in order to prevent
damage to the system.
Please switch off the power to the system when it is not in use for long periods of time.
Please switch off the power to the system before conducting any cleaning of or maintenance of
the system.
Never clean the system with liquid detergents liquefied cleaning agents or corrosive cleaning
agents. Never allow the indoor unit to come into contact with liquid. Any of these actions may
cause damage to the plastic accessories and casings or cause damage to the electrical
components.
Never insert your hands or any other object into the air outlet of the indoor and outdoor units
to ensure that there is no damage to the high-speed fan or the object being inserted.
Never allow children to play the system.
Never remove any of the coverings of the system.
Never allow moisture to get into the remote control.
Never put or use any combustible liquid or substance such as hair spray, paint or petrol near the
machine to prevent the possibility of fire.
If any unusual circumstances occur, including but not limited to; strange noises or smells,
smoke, abnormal temperature increases or changes to appearance of components please
switch off the power immediately and contact your local distributor of the Koolsola Solar Air
Conditioning System. Do not attempt to repair the system yourself.
Pre-checking before operation:
Please refer to the Section 2.3 – Routine Maintenance to establish the correct method for
cleaning the air filter and checking/filling the solar collector with water.
If the system has been switched off/idle for a long period of time please clean the air filter
before turning the system back on.
If the system has been switched off/idle for a long period of time please check the level of the
water in the solar collector and add water if required.
In normal operating conditions please clean the air filter every 2 weeks.
In normal operating conditions please check the level of the water in the solar collector every 3
months and add water if required.
Operating Instructions and Installation Guide
Wall Mounted Split System
Version 1.0
1.2 System Operating Principles
The Koolsola Solar Air Conditioning System uses both mains electrical power and solar thermal
energy. The Koolsola Solar Air Conditioning System always requires mains electrical power to
operate fans and electrical control components.
The Koolsola Solar Air Conditioning System uses solar thermal energy as an energy source to
help maintain the refrigeration process which in turn reduces the amount of electrical energy
required to run the compressor.
The Koolsola Solar Air Conditioning System operates under the same principles as a
Conventional Air Conditioning System where refrigeration takes place as a result of the phase
transition of the refrigerant.
The difference between a Koolsola Solar Air Conditioning System and a Conventional System is
how the vapour is changed back into a liquid state in the refrigeration cycle.
A Conventional System uses a compressor to increase the pressure of the refrigerant when it’s
in a vapour state so that when it enters the condenser coil the combination of pressure and
cooling from ambient air condenses it into a liquid in the coil. The change of state of refrigerant
begins to take place approximately two thirds of the way down the condenser. The Koolsola
Solar Air Conditioning System improves on this basic method by using solar thermal energy
collected in a solar collector to add thermal energy to the refrigerant vapour. By using this
method it reduces the amount of compression required to achieve the refrigeration cycle, as
well as utilising more of the cooling face of the condenser coil.
By reducing the amount of compression required to achieve the refrigeration process the
Koolsola Solar Air Conditioning System can use an undersized compressor in comparison to a
Conventional System. Similarly if enough solar thermal energy is being collected and utilised the
compressor will run less often in a Koolsola Solar Air Conditioning System than a Conventional
System.
The Koolsola Solar Air Conditioning System incorporates off centre fan blade technology,
insulated foam ducts and high performance brand name compressors to achieve optimum
performance at a minimum level of noise. The Koolsola Solar Air Conditioning System typically
creates 10dBA less noise than a Conventional System.
Operating Instructions and Installation Guide
Wall Mounted Split System
Version 1.0
1.4 System Components
Please note that the graphic example below is based on the standard Koolsola Solar Air Conditioning
System and may be slightly different in various configurations.
Operating Instructions and Installation Guide
Wall Mounted Split System
Version 1.0
Section 2
Operating Instructions
Operating Instructions and Installation Guide
Wall Mounted Split System
Version 1.0
2.1 General Operating Instructions
Optimum Operation
To ensure maximum efficiency please set the indoor temperature at a sensible level. In Australia
an indoor temperature of 24oC is recommended to achieve a sustainable balance between
comfort and energy efficiency.
When cooling please ensure that curtains or shutters are closed to reduce the heating effect of
direct sunlight.
When heating or cooling please ensure any relevant windows, doors and other openings are
closed to avoid convection of indoor and outdoor air which will decrease the efficiency of the
system.
Never place barriers near the indoor or outdoor units which have the ability to block the airflow
to or from the system as this can limit the efficiency of the system.
Please follow the procedure in the ‘Routine Maintenance’ section of this manual regarding the
cleaning of the filter and checking/filling of the water in the solar collector to ensure maximum
efficiency of the system.
Working Temperature Range
Cooling Heating
Indoor Temperature ≥ 18oC ≤ 31oC
Outdoor Temperature 18oC – 53oC -7oC – 24oC
Operating Instructions and Installation Guide
Wall Mounted Split System
Version 1.0
2.2 Remote Control
Remote Control Buttons/Displays
Operating Instructions and Installation Guide
Wall Mounted Split System
Version 1.0
Remote Control Operating Instructions
Operating Instructions and Installation Guide
Wall Mounted Split System
Version 1.0
Remote Control Functions
Operating Instructions and Installation Guide
Wall Mounted Split System
Version 1.0
Remote Control Functions Continued
Operating Instructions and Installation Guide
Wall Mounted Split System
Version 1.0
2.3 Routine Maintenance
Solar Collector
Always turn off the Koolsola Solar Air Conditioning System power at the power switch before
conducting any maintenance.
The water inside the solar collector and the copper piping entering and exiting the solar
collector can reach temperature of up to 85oC, please take care when checking and filling the
water level.
Take particular care with water exiting the water drain.
These instructions apply to both the Flat Panel solar collector and the Evacuated Tube solar
collector.
In most situations (when the indoor unit sits higher than the solar collector) the water tank
inside the solar collector is constantly topped up by the condensation drain pipe coming from
the indoor unit that is attached to the vertical inlet on the right hand side of the collector. In
these this typical situation the water level is constantly being topped up by the condensate and
the water level only needs to be checked once every 3 months.
If the condensation drain pipe from the indoor unit isn’t attached to the solar collector the water
level needs to be checked every 2 weeks.
If upon inspection is water periodically exiting out of the water drain (the horizontal outlet on
the right of the collector) then there is no need to check the water level further as the water
tank inside the solar collector is full.
Check the water level on the solar collector by unscrewing the Red Cap from the top left hand
corner of the solar collector and removing the dipstick, ensure that the water mark is above the
marking on the dipstick.
If the water level is below the mark on the dipstick add water through the opening that you have
removed the dipstick from, the water tank inside the solar collector is full when water starts to
exit out of the water drain.
Water added to the solar collector must be of drinking quality, if your tap water is not of drinking
quality then distilled water can be used.
Ensure that the dipstick and red cap are inserted back in their original positions once filling is
complete.
The solar collector can be cleaned by wiping with a soft cloth, damp with clean room
temperature water.
Indoor Unit
Always turn off the Koolsola Solar Air Conditioning System power at the power switch before
conducting any maintenance.
The air filter should be removed and cleaned every 2 weeks to ensure maximum efficiency of the
Koolsola Solar Air Conditioning System.
Remove the front panel of the indoor unit by holding the both ends of the front panel/grille and
pulling upwards and forwards simultaneously to expose the air filters.
Pull both of the air filters downwards gently once they are exposed.
Clean the excess dust off the air filters with a vacuum cleaner set at low suction.
Clean the remaining dust off the air filters by wiping with a soft cloth, damp with room
temperature water.
Ensure that the air filters are dry before re-inserting into the indoor unit, ensure that they are
dried in the shade rather than in direct sunlight.
Operating Instructions and Installation Guide
Wall Mounted Split System
Version 1.0
Re-install the air filters as per the diagram on the indoor unit and close the front panel/grille
when complete.
The indoor unit can be cleaned with a soft cloth, damp with clean room temperature water. Care
should be taken to ensure that no water enters any openings on the unit.
Outdoor Unit
Always turn off the Koolsola Solar Air Conditioning System power at the power switch before
conducting any maintenance.
The copper piping entering and exiting the outdoor unit can reach temperature of up to 85
o
C,
please take care when inspecting or cleaning the outdoor unit.
The outdoor unit can be cleaned with cleaning products suitable for cleaning powder coated
surfaces.
Care should be taken to ensure that no cleaning products enter any of the openings on the unit.
Particular care should be taken when cleaning around the interconnecting electrical cable
opening and plastic handles.
2.4 Troubleshooting
Common Fault Diagnosis
Issue Possible Cause Solution
Disconnected power supply Ensure that the power cord is plugged in, the switch
is turned on and the power point is operating
correctly.
The Koolsola System is in
defrosting mode
Wait for 3 minutes to see if the system begins to
operate normally.
The circuit breaker is tripping Check circuit breaker and contact electrician if
problem persists.
The fuse inside the Koolsola
System has burnt out
Contact either the tradesman who installed the
system or the distributor of the product.
The system is
out of
operation
The voltage is exceedingly
low
Contact either the tradesman who installed the
system or the distributor of the product.
Operating Instructions and Installation Guide
Wall Mounted Split System
Version 1.0
The filters are dirty or
blocked
Follow the procedure in section 2.3 to remove,
clean and replace the filters.
The air inlet or air outlet of
the indoor or outdoor unit is
blocked
Inspect both the indoor and outdoor units and
ensure that there is nothing occluding the air inlets
and outlets.
The outdoor temperature is
outside the operating
temperature of the Koolsola
System
Check the outdoor temperature range of operation
in section 2.1, if the outdoor temperature is outside
this range of operation use a complimentary
cooling or heating appliance to assist the Koolsola
System.
The water in the Solar
Collector is low
Follow the procedure in section 2.3 to ensure that
the Solar Collector is filled to the correct level.
There is a heating or cooling
source in the room affecting
the effect of the Koolsola
System
Remove the heating or cooling source if possible to
ensure optimum performance of the Koolsola
System.
Poor Cooling
or Heating
effect
Air is escaping through a
window, door or other
opening
Ensure that all possible doors, windows or other
opening are closed to ensure optimum
performance of the Koolsola System.
Loud water
flowing sound
Cooling fluid is flowing into
the machine when the air
conditioner switches on and
off
Please wait for a moment, if the sound is unusual or
persistent please contact the tradesman who
installed the system or the distributor of the
product.
Loud
exhausting
sound
The four way valve is
switching
Please wait for a moment, if the sound is unusual or
persistent please contact the tradesman who
installed the system or the distributor of the
product.
Loud,
constant
unusual noise
The operation of the system
is unstable
Please wait for a moment, if the sound is unusual or
persistent please contact the tradesman who
installed the system or the distributor of the
product.
The temperature setting is
incorrect
Reset the temperature.
The LCD display on the
remote is indicating that
timing is on
Cancel the timing and reset remote.
To prevent damage to the
compressor, it isn’t turning
on as the system is starting
up.
Please wait 3 minutes to see if normal operation
resumes.
Compressor is
not turning
on
To prevent damage to the
compressor, it isn’t turning
on as the inlet pressure isn’t
high enough
If after 3 minutes the system hasn’t resumed
normal operation please contact the tradesman
who installed the system or the distributor of the
product.
The
compressor
starts and
stops
The input voltage is
exceedingly low
Ensure that there aren’t too many appliances
connected to the same line. If the problem persists
contact and electrician, the tradesman who
installed the system or the distributor of the
Operating Instructions and Installation Guide
Wall Mounted Split System
Version 1.0
product. frequently
The insulation of the room is
very poor
Ensure that all windows, doors and other openings
are closed. If the problem persists contact the
tradesman who installed the system or the
distributor of the product.
The display of
the remote
control is not
clear or not
working
The batteries are dead Replace with new alkaline batteries.
The batteries are incorrectly
installed
Ensure that the batteries are installed in the correct
orientation.
The remote control is faulty If the problem persists contact the distributor of the
product.
Non Failure Conditions
When the Koolsola Solar Air Conditioning System is turned on or off sometimes you will hear a
sizzling sound, this is the flowing sound of the refrigerant and is not a malfunction.
The Koolsola Solar Air Conditioning System cannot instantly restart after it is stopped, even
though it is switch on. The compressor will take 3 minutes before it resumes operation if it has
been switched off then back on.
Occasionally stale/uncomfortable air is emitted by the system, if this happens follow the
procedure in section 2.3 for removing, cleaning and re-fitting the filters.
If while heating, the indoor and outdoor units stop simultaneously but the compressor is still
running the Koolsola Solar Air Conditioning System is in defrosting mode. This is not a
malfunction, the heating will continue once the defrosting process is finished.
While heating, the outdoor unit may generate condensation. This is a result of the defrosting
process and thawing, it is not a malfunction.
Failure Display Indicators
Model No.’s TKFR-26GW and TKFR-35GW
Failure Type Display Status
Indoor Temperature Sensor Failure E1
Indoor Coil Transmitter Failure E2
System Failure E4
If any of these failure display indicator occur please contact either the tradesman who installed the
system or the distributor of the product.
Model No.’s TKFR-60GW and TKFR-72GW
Failure Type Display Status
Indoor Temperature Sensor Failure Indicator light shines 1 time for 8 seconds
Indoor Coil Transmitter Failure Indicator light shines 2 times for 8 seconds
System Failure Indicator light shines 4 times for 8 seconds
If any of these failure display indicator occur please contact either the tradesman who installed the
system or the distributor of the product.
Operating Instructions and Installation Guide
Wall Mounted Split System
Version 1.0
Section 3
Installation Guide
Operating Instructions and Installation Guide
Wall Mounted Split System
Version 1.0
3.1 General Installation Information
Electrical Information
The Koolsola Solar Air Conditioning System should only be installed, repaired and maintained
by a qualified, licensed Air Conditioning Installer.
All Electrical work involved in the installation must be completed by a qualified, licensed
Electrician to the standards relevant to the location of the installation.
Ensure that the system is not installed in an environment that does not contain air with
unusually high levels of oil, sulphide gas, flammable gas, alkaline, or where high frequency
equipment is present.
If the installation site does not have compliant electrical infrastructure the installer shall use
their judgement as to whether the installation is suitable.
If voltage fluctuations are greater than +/- 10% measures should be taken to regulate the
voltage.
The power cord should be provided with effective grounding.
The power circuit should be dedicated solely to the Koolsola System.
Specific power distribution equipment and
electrical cable for Koolsola System
Specific power distribution equipment and
electrical cable for circuit
System
Maximum
Current
Electrical
conductor’s
cross
sectional
area (mm2)
Standard
specification
of the
switch/fuse
(A)
Circuit’s
maximum
current
Electrical
conductor’s
cross
sectional
area (mm2)
Standard
specification
of the
switch/fuse
(A)
≤ 10 1 – 1.5 16/16 ≤ 16 1.5 – 4 32/25
≤ 16 1.5 – 2.5 32/25 ≤ 25 2.5 – 4 63/50
≤ 25 2.5 – 4 63/50 ≤ 32 4 – 10 63/50
≤ 32 4 – 6 63/50 ≤ 40 6 – 16 100/80
≤ 63 10 – 25 125/125
General Solar Collector Installation
The collector operates at optimum performance in direct sunlight.
For optimum performance the solar collector should face NORTH in the southern hemisphere
and SOUTH in the northern hemisphere.
If the optimum position is not available the next best option is for the system to face EAST.
If neither the optimum position or and East facing position are available the next best option is
for the system to face WEST.
It is not advised to install the collector facing in the opposite direction to the optimum position.
To ensure the condensate drained from the indoor unit is able to be used to fill the water tank in
the solar collector it is best to ensure that the indoor unit it positioned higher than the top of the
solar collector.
If it is not possible to mount the indoor unit higher than the solar collector please bring the
customer’s attention to the water level filling/checking procedure in section 2.3.
Operating Instructions and Installation Guide
Wall Mounted Split System
Version 1.0
Refrigerant Piping
All refrigerant piping must be rated for R-410A refrigerant.
The maximum length of the refrigerant piping between the outdoor unit and the solar collector is 2m.
This length can’t be exceeded and should be noted before the installation is commenced.
Refrigerant must be added if the length between the indoor and outdoor units exceeds the standard,
supplied piping lengths;
Model
No.
Standard
Piping
Length
(m)
Maximum
Possible
Piping
Length
(m)
Maximum
Head
Drop (m)
Maximum
No. of
Elbows
Liquid
Pipe
Diameter
(mm(in.))
Gas Pipe
Diameter
(mm(in.))
Amount of
added R-410A
required for
lengths more
than standard
(g/m)
TKFR26GW
3.6 7 5 6 6.35
(7/16)
9.52
(5/8)
35
TKFR35GW
3.6 10 7 8 6.35
(7/16)
12.7
(3/4)
50
TKFR60GW
3.6 10 7 8 6.35
(7/16)
12.7
(3/4)
70
TKFR72GW
4.0 15 7 10 9.52
(5/8)
15.88
(7/8)
100
When the piping is extended above the Standard Piping Length the cooling/heating capacity will
start to decrease and there is a possibility that the power consumption will increase.
A liquid stopping ring and oil collector shall be applied to the system when the head drop is over
5m, and then one for every 5m drop.
When bending the copper pipe, please use a bender in order to prevent pipe damage.
If the installation site is unique and the above guidelines can’t be followed please contact the
distributor of the product to discuss.
3.2 Indoor Unit Installation
The indoor unit should be installed on a firm, vibrationless wall.
The entrance and vent can’t be occluded; the outlet should face the centre of the room.
The location of outdoor unit should be taken into consideration when selecting the
location of the indoor unit, see the table in section 3.1 for the refrigerant piping lengths.
It is preferable for the indoor unit to be located higher than the top of the solar collector,
see section 3.1 for explanation.
It is preferable for the location of the indoor unit to avoid direct sunlight.
The indoor unit should be installed where drainage is convenient.
The indoor unit should be mounted with the following surrounding empty space
dimensions in mind; > 40cm to ceiling, > 20cm left and right, > 60cm below.
A mounting bracket is supplied in order to fix the indoor unit to the wall. Use fasteners
specific to the construction material of the wall, the installed bracket should be able to
bear 50kg.
Operating Instructions and Installation Guide
Wall Mounted Split System
Version 1.0
As shown in the following pictures, pipelines are connected in five directions from the
indoor unit. When the pipelines are connected in the 3 or 4 direction, please use a saw
to open a preformed groove on the panel. When the pipelines are connected in the 5
direction, please use the saw to open a preformed groove under the panel.
It is recommended that a weight dropper be used to ensure that the bracket is sitting
perfectly horizontal.
Based on the junction direction of the pipeline (please consult picture above), a hole
which is provided with a diameter of 65mm is drilled in the corresponding place on the
wall. Then the wall bushing and the tube cap are placed into the hole. If the pipeline is
connected in the 3 or 4 direction, the hole in the 3 or 4 direction should be opened a
little lower than the height of the hole in the 1 or 2 direction. The aim is to ensure the
condensate flow out of the pipe effectively.
Please install the pipe of the indoor unit according to the direction of the wall hole; the
outflow pipe, cable line and the inflow pipe should be bundled with adhesive tape, the
outflow pipe should sit below the other two.
Lead the taped pipes through the wall bushing and hang the indoor unit on the top
hooks of the bracket then attach to the long channels at the bottom of the bracket.
Operating Instructions and Installation Guide
Wall Mounted Split System
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3.3 Outdoor Unit Installation
The outdoor unit should be installed on a solid foundation, preferably on rubber vibration
padding to ensure stable, quiet operation.
The footing bolts of the outdoor unit should be either M8 or M10.
The maximum allowable gradient in any direction is 5o.
In areas of strong winds it is advisable to ensure that the unit is mounted where it is going to be
least affected by the wind.
Any barriers which may block the airflow or heat dissipation should be removed.
If the system is going to be mounted on a frame or bracket, please bear in mind the unit weight
in the specifications in section 1.1, as a general rule the frame or bracket should be rated to
180kg.
The following dimensions should be taken into account when installing the outdoor unit;
Operating Instructions and Installation Guide
Wall Mounted Split System
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3.4 Evacuated Tube Solar Collector Installation
Please handle the Evacuated Tubes with care as they are made of glass and can be easily
shattered.
Install the tank supports on the panel of the outdoor unit using the bolts provided and the
threaded holes in the panel of the outdoor unit;
Install the evacuated tube bracket on the lower part of the tanks supports using the nuts and
bolts provided;
Install the tank on the upper part of the tank supports using the threaded studs pre-inserted in
the tank and the nuts provided;
Insert the white plastic collars provided into the holes in the evacuated tube bracket.
Lightly lubricate the black rubber seals provided with a detergent solution and slide them onto
the evacuated tubes with the open end of the seal facing up towards the open end of the tube.
Push the each tube softly into the silicon hole in the tank until it is secure, then push across and
down into the white collar in the evacuated tube bracket.
Operating Instructions and Installation Guide
Wall Mounted Split System
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Slide the black rubber seal up to seal off the silicon sealing section from the elements;
Lubricate the air vent (assembly with red cap) lightly with the detergent solution then push softly
through the hole located at the top left hand side of the tank, gently twist as you push to ensure
that the silicon sealing ring inside isn’t dislodged;
Lubricate the white plastic tee joint (water drain) with the detergent solution then push softly
through the hole located on the right hand side of the tank, gently twist as you push to ensure
that the silicon sealing ring inside isn’t dislodged;
Fill the evacuated tube solar collector with water by unscrewing the red cap on top of the air
vent and filling through the hole until water starts to exit out of the water drain on the right
hand side.
If in use or in installation one of the glass evacuated tubes is broken, it is possible to plug the
corresponding hole in the bottom tank with a similar sized and shaped object until a
Operating Instructions and Installation Guide
Wall Mounted Split System
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replacement tube can be sourced from the distributor of the product. This is only recommended
as a temporary fix until a replacement can be sourced as it will negatively affect the efficiency of
the solar collector.
3.5 Flat Panel Solar Collector Installation
The flat panel solar collector must be installed as close to vertically as possible, the maximum
angle the panel can be installed from vertical is 10o.
The maximum refrigerant piping length between the flat panel solar collector and the outdoor
unit is 2m, please ensure that the installation site will not require more than 2m of refrigerant
piping from the outdoor unit.
Fix the bottom brackets provided to the wall using the relevant fasteners for the construction
material of the wall, then place the collector on the bottom brackets to determine the position
of the upper brackets;
Install the bracket and fasten to the wall, lubricate the air vent (assembly with red cap) lightly
with the detergent solution then push softly through the hole located at the top left hand side of
the panel, gently twist as you push to ensure that the silicon sealing ring inside isn’t dislodged.
Lubricate the white plastic tee joint (water drain) with the detergent solution then push softly
through the hole located on the right hand side of the panel, gently twist as you push to ensure
that the silicon sealing ring inside isn’t dislodged;
Operating Instructions and Installation Guide
Wall Mounted Split System
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Fill the flat panel solar collector with water by unscrewing the red cap on top of the air vent and
filling through the hole until water starts to exit out of the water drain on the right hand side.
The flat panel solar collector doesn’t need to be mounted to the side of the outdoor unit as
pictured above. It can be mounted directly above the outdoor unit if there are space limitations
as long as it is ensured that the water exiting the water drain doesn’t drip directly onto the
outdoor unit.
3.6 Gassing Installation
Remove the protective covering caps and connect the copper refrigerant piping from the two top
connections on the bottom right of the outdoor unit to the connections on the top right hand
side of the solar collector;
Connect the condensate drain tube from the indoor unit to the vertical stem of the white tee
joint on the top right of the solar collector.
Release the nitrogen filled in the radiator of the indoor unit when the air conditioner leaves the
factory. Remove the cover cap of the thick connecting pipe and the cover cap of the thin
connecting pipe of the radiator.
Remove the caps of the two connecting pipes, and tighten the nuts of the low pressure and the
high pressure connecting pipes;
Remove the caps on the stop valves of the low pressure and the high pressure connecting pipes,
screw one end of the thick connecting pipe and one end of the thin connecting pipe on the stop
valves of the low pressure and the high pressure connecting pipes, and tighten the nuts of the
thick and thin connecting pipes using a spanner;
Operating Instructions and Installation Guide
Wall Mounted Split System
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Pressure test with Nitrogen for leaks.
Vac down the solar panel tank and indoor unit completely to below 900microns for as long as
possible (1 hour minimum).
If air, water or other impurities, enter the solar air conditioner system, it will cause excessive
working current, capillary blockage etc. which will affect the performance of the air conditioner.
Ensure complete elimination of air, water and other impurities in the cooling pipe of solar tank
and side tube of indoor unit.
To eliminate the air in the solar collector please use a spanner to remove the A1 and the A2 cutoff valve caps of the outdoor unit;
Use a spanner to loosen the stud type copper sealing attachment half a circle upon the
air pipe of A1 cut-off valve.
Use an inner hexagonal wrench to loosen the center of A2 cut-off valve 90o.
After 7 to 11 seconds, fasten up the A2 cut-off valve. Air is exhausted from A1 air stud
type copper sealing attachment.
When there is no air escaping, according to the moment from 20 to 25NM, please
fasten the stud type copper sealing attachment.
Use the inner hexagonal wrench to open the A1 and A2 cut-off valve cores.
Fasten A1 and A2 cut-off valve caps.
Operating Instructions and Installation Guide
Wall Mounted Split System
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Use soapy water or halogen detection instrument to detect leakage. If you find leakage,
you need to fasten A1 and A2 cut-off valve caps. And then you can introduce refrigerant
from outside of the system to expel air.
Empty the connecting pipe of the indoor unit
To eliminate the air in the solar collector please use a spanner to remove the B1 and the
B2 cut-off valve caps of the outdoor unit;
Use a spanner to remove the B1 and the B2 cut-off valve caps of the outdoor unit.
Use a spanner to loosen the stud type copper sealing attachment half a circle upon the air pipe
of B2 cut-off valve.
Use the inner hexagonal wrench to loosen the centre of B1 cut-off valve by 90o. After 7 to 11
seconds, fasten up the B1 cut-off valve. Air is exhausted from B2 air stud type copper sealing
attachment. When there is no air escaping, according to the moment from 20 to 25NM, please
fasten the stud type copper sealing attachment.
Use the inner hexagonal wrench to open the of B1 and B2 cut-off valve cores.
Fasten B1 and B2 cut-off valve caps.
Use soapy water or halogen detection instrument to detect leakage. If you find leakage, you
need to fasten B1 and B2 cut-off valve caps. And then you can use refrigerant gas from outside of
the system to expel air.
3.7 Wiring Installation
Always turn off the Koolsola System power at the power switch before conducting any wiring.
The wiring installation differs slightly from the evacuated tube solar collector to the flat panel
solar collector; the flat panel solar collector has a backup heater to maintain the temperature of
the water in cold weather.
For the evacuated tube solar collector only the interconnecting cable from the indoor unit needs
to be connected to the outdoor unit.
For the flat panel solar collector both the interconnecting cable from the indoor unit and the
interconnecting cable from the solar collector need to be connected.
The terminal board is located on the upper right hand side of the outdoor unit, it can be
accessed by removing the screw holding on the plastic handle and sliding the handle off.
The wiring configuration is as follows;
Operating Instructions and Installation Guide
Wall Mounted Split System
Version 1.0
Wiring configuration for Koolsola System with evacuated tube solar collector;
Wiring configuration for Koolsola Sytem with flat panel solar collector;
Operating Instructions and Installation Guide
Wall Mounted Split System
Version 1.0
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