Kaysun KSDF-28 DN4.0 User manual

Original instructions
Thank you very much for purchasing our air conditioner.
Before using your air conditioner, please read this manual carefully and keep it for future
reference.
INSTALLATION MANUAL
Console Unit 2nd Generation
KSDF-28 DN4.0 KSDF-36 DN4.0 KSDF-45 DN4.0

1
Contents
Installation Manual
Safety Precautions
Read carefully before you install the air conditioner to make sure that
the installation is correct.
There are two types of precautions as described below:
Warning: Failure to comply may lead to serious injury.
Caution: Failure to comply may lead to injury or damage of the
unit. Depending on the situation, this may also lead to serious injury.
Once the installation is completed, and the unit has been tested and
veried to be operating normally, please explain to the customer how
to use and maintain the unit according to this manual. In addition,
make sure that the manual is kept properly for future reference.
• Installation, maintenance and cleaning the filter work must be
carried out by professional installers. Refrain from doing it yourself.
Improper installation may cause water leakage, electric shock, or
re.
• Install the air conditioner according to the steps described in this
manual. Improper installation may cause water leakage, electric
shock, or re.
• For installation in smaller rooms, you must adopt the relevant
measures to prevent the refrigerant concentration from exceeding
the limit. Please consult the sales agent on the relevant measures
required. A high concentration of refrigerant in an airtight space can
cause oxygen insufciency (anoxia).
• Make sure the required parts and accessories are installed. Using
unspecied parts may cause the air conditioner to malfunction or
drop, as well as water leakage, electric shock, and re.
• Mount the air conditioner in a place that is sturdy enough to bear its
weight. If the base is not secured properly, the air conditioner may
drop leading to damages and injuries.
• Take in full consideration to the effects of strong winds, typhoons and
earthquakes, and reinforce the installation. Improper installation may
cause the air conditioner to drop leading to accidents.
• Make sure a standalone circuit is used for the power supply. All
electrical parts must comply with the local laws and regulations,
and what is stated in this installation manual. The installation works
must be carried out by a professional and qualified electrician.
Insufcient capacity or improper electrical works can lead to electric
shock or re.
• Use only electrical cables that full the specications. All wiring on
site must be carried out in accordance with the connection diagram
attached to the product. Make sure that there are no external forces
acting on the terminals and wires. Improper wiring and installation
may cause a re.
• Make sure the power cord, communication and controller wiring
are straight and level when you are working on the connections,
and the cover on the electric box is tight. If the electric box is not
closed properly, it may lead to electric shock, re or overheating of
electrical components.
• If the refrigerant leaks during installation, open the doors and
windows immediately to ventilate the area. Refrigerant can produce
toxic gases when in contact with re.
• Switch off the power supply before touching any electrical
component.
• Do not touch the switch with wet hands. This is to prevent electrical
shocks.
• Do not come in direct contact with the refrigerant leaking from the
connections of refrigerant piping. Otherwise, it may lead to frostbite.
• The air conditioner must be grounded. Do not connect the earth
line (ground) to gas piping, water piping, lightning rods or telephone
earth lines. Improper grounding can lead to electric shock or re,
and may cause mechanical failure due to current surges from
lightning and so on.
• The earth leakage circuit breaker must be installed. There is a risk
of electric shock or re if the earth leakage circuit breaker is not
installed.
• The appliance shall be installed in accordance with national wiring
regulations.
• The appliance must be installed 2,3m above oor.
• If the supply cord is damaged, it must be replaced by the
manufacturer or its service agent or a similarly qualied person in
order to avoid a hazard.
• An all-pole disconnection switch having a contact separation of at
least 3mm in all poles should be connected in xed wiring.
• The temperature of refrigerant circuit will be high, please keep the
interconnection cable away from the copper tube.
• The power cord type designation is H05RN-For above/H07RN-F.
• Check the power supply before installation. Ensure that the power
supply must be reliably grounded following local, state and National
Electrical Codes. If not, for example, if the ground wire is detected
charged, installation is prohibited before it is rectied. Otherwise,
there is a risk of re and electric shock, causing physical injury.
• Check the electric wire, water and gas pipeline layout inside the
wall, oor and ceiling before installation. Do not implement drilling
unless conrm safety with the user, especially for the hidden power
wire. An electroprobe can be used to test whether a wire is passing
by at the drilling location, to prevent physical injury caused by
insulation broken cords.
• Install the water discharge piping according to the steps described
in this manual, and make sure that the water discharge is smooth,
and the piping is properly insulated to prevent condensation.
Improper installation of the water discharge piping may lead to
water leakage, and damage the indoor furniture.
• When mounting the indoor and outdoor units, make sure the power
cord is installed at a distance of at least 1 m away from any TV or
radio so as to prevent noise or interference with the images.
• The refrigerant required for the installation is R-410A. Make sure
the refrigerant is correct before installation. Incorrect refrigerant
may cause the unit to malfunction.
• Do not install the air conditioner in the following places:
1) where there is oil or gas, such as the kitchen. Otherwise, the
plastic parts may age, fall off or water may leak.
2) where there are corrosive gases (such as sulphur dioxide).
Corrosion in the copper pipes or welded parts may cause the
refrigerant to leak.
Warning
Caution
Installation Manual..............................................................................1
Accessories ........................................................................................3
1. Before Installation.......................................................................4
2. Choosing an Installation Site......................................................4
3. Indoor Unit Installation................................................................4
4. Refrigerant Piping Installation ....................................................5
5. Water Discharge Piping Installation............................................7
6. Electrical Wiring..........................................................................7
7. On-site Conguration .................................................................9
8. Test Run ...................................................................................10
9. The Explain Of The Display Panel ...........................................12
10. Part Names ..............................................................................12
11. Air Conditioner Operations and Performance ..........................13
12. Adjusting Air Flow Direction......................................................13
13. Maintenance.............................................................................14
14. Symptoms That Are Not Faults.................................................15
15. Troubleshooting........................................................................15

2
3) where there are machines emitting electromagnetic waves.
Electromagnetic waves may interfere with the control system,
causing the unit to malfunction.
4. where there is a high salt content in the air. When exposed
to air with a high salt content, the mechanical parts
will experience accelerated ageing which will severely
compromise the service life of the unit.
5. Where there are major voltage fluctuations. Operating the
unit using a power supply system that has large voltage
fluctuations will reduce the service life of the electronic
components, and cause the unit's controller system to
malfunction.
6. where there is a risk of leakage of flammable gases.
Examples are sites that contain carbon bres or combustible
dust in the air, or where there are volatile combustibles (such
as diluent or petrol). The above gases may cause explosion
and re.
7. Do not touch the ns of the heat exchanger as this may lead
to injury.
8. Some products use the PP packing belt. Do not pull or tug
on the PP packing belt when you transport the product. It will
be dangerous if the packing belt breaks.
9. Note the recycling requirements for nails, wood, carton and
other packaging materials. Do not discard these materials
directly as these may lead to bodily harm.
10. Tear up the packaging bag for recycling to prevent children
from playing with it, and leading to suffocation.
11. The appliance shall not be installed in the laundry.

3
Accessories
Verify that the air conditioner includes the following accessories.
Accessories to purchase locally
Name Shape Quantity
Installation ttings
1. Hook 2
2. Mounting screw(ST3.9x25-C-H) 10
Others
3. Installation manual 1
4. Remote alarm signal wires 1
5. Remote control signal wires 1
6. Flexible hose tube 1
7. Copper nut: Use for pipe connection of
engineering installation 1
Code Name Appearance Dimensions Qty Note
1 Copper pipe
Choose and purchase copper pipes
that correspond to the length and size
calculated for the selected model in the
installation manual of the outdoor unit
and your actual project requirements.
To purchase based
on actual project
requirements.
Use to connect indoor
refrigerant piping.
2
PVC pipe
for water
discharge
Inner diameter, 18 mm.
To purchase based
on actual project
requirements.
Use to discharge
condensed water from
the indoor unit.
3
Insulation
casing for
piping
The inner diameter is based on the
diameter of the copper and PVC pipes.
The thickness of the pipe casing is 10
mm or more. Increase the thickness
of the casing (20 mm or thicker) when
the temperature exceeds 30°C or the
humidity exceeds RH80%.
To purchase based
on actual project
requirements.
Protect piping from
condensation.

4
1. Before Installation
2. Choosing an Installation Site
3. Indoor Unit Installation
Make sure you check the packaging during transportation. Claim
compensation for any damage from the carrier immediately.
Installation position must meet the following requirements:
1. There is enough space for installation and maintenance.
2. The air inlets and outlets will not interfere with one another.
Impact of external air ow is minimal.
3. Air from the unit can reach every part of the room.
4. Layout of connecting piping and water discharge piping is
convenient.
• Removing front grille
• For wall installations, secure hook using 6 screws and the
indoor unit using 4 screws
Fix the hook with tapping screw onto the walll which can
support the weight of the indoor unit. (Refer to Figure 3.2)
1) Open the front panel.
2) Remove the 4 screws and remove the front grille while
pulling it forward (3 tabs).
Take note of the following when transporting the equipment:
1. Fragile. Handle with care.
2. Determine the route to move the unit to the installation site.
3. Transport the equipment on the base of the original package as
much as possible.
4. When lifting the equipment, use a protective device to protect
the equipment, prevent damage, and always take note of where
the centre of gravity is.
≥100mm
≥100mm ≥100mm
≥100mm
≥100mm ≥100mm
Figure 2.1
Figure 2.2
Figure 3.1
Figure 3.2
195mm
700mm 210mm
600mm
Hook
Hook
Tapping
screw
Washer
Figure 2.3
(unit: mm)
64
)007(
431
591
591
62
05
475
)006(
061
35
53
446
1 05
052
210
1 04
032
195mm
＜6mm

5
For oor installations, secure the indoor unit using 6 screws.
(Do not forget to secure to the rear wall.) (Refer to Figure 3.5)
Attach the front panel and front grille in their original
positions once all connections are complete.
Figure 3.3
Figure 3.4
Figure 4.1
Figure 4.2
Table 4.1
liquid pipe (the
slim one)
Normal wrench
Torque wrench
Pipe socket cap
Pipe ttings
gas pipe (the
bigger one)
Figure 3.5
Hang the indoor unit on the hook. (Refer to Figure 3.3)
(The bottom of body can touch with oor or suspended,
but the body must install vertically.)
Using 4 screws to secrew the indoor unit. (Refer to
Figure 3.4)
The length and level difference requirements for the refrigerant piping are
different for different indoor and outdoor units. Refer to the installation manual
of the outdoor unit.
1. Piping material: Copper pipes for air handling.
2. Piping size: Choose and purchase copper pipes that correspond to
the length and size calculated for the selected model in the installation
manual of the outdoor unit and your actual project requirements.
1. Seal the two ends of the piping properly before you connect the indoor
and outdoor piping. Once unsealed, connect the piping of the indoor and
outdoor units as quickly as possible to prevent dust or other debris from
entering the piping system via the unsealed ends, as this may cause the
system to malfunction.
2. If the piping needs to go through walls, drill the opening in the wall, and
place accessories like casings and covers for the opening properly.
3. Place the refrigerant connecting piping and the communication wiring for
the indoor and outdoor units together, and bundle them tightly to make
sure air does not enter and condensate to form water that may leak from
the system.
4. Insert the bundled piping and wiring from outside the room through the
wall opening into the room. Be careful when you lay out the piping. Do
not damage the piping.
• Refer to the installation manual attached with the outdoor unit on
installation of the refrigerant piping for the outdoor unit.
• All gas and liquid piping must be properly insulated; otherwise, this may
cause water to leak. Use heat insulation materials that can withstand
high temperatures above 120°C to insulate the gas pipes. In addition, the
insulation of the refrigerant piping should be reinforced (20 mm or thicker)
in situations where there is high temperature and/or high humidity (when
part of refrigerant piping part is higher than 30°C or when the humidity
exceeds RH80%). Otherwise, the surface of the heat insulation material
may be exposed.The sizes of copper pipe see table 4.1 and position of
gas&liquid pipe see gure 4.1
• Before the works are carried out, verify that the refrigerant is R-410A. If
the wrong refrigerant is used, the unit may malfunction.
• Other than the specied refrigerant, do not let air or other gases enter the
refrigeration circuit.
• If the refrigerant leaks during installation, make sure you fully ventilate
the room.
• Use two wrenches when you install or dismantle the piping, a common
wrench and a torque wrench. See Figure 4.2.
• Slot the refrigerant piping into the brass nut (accessory 7), and expand
the pipe socket. Refer to the following table for the size of the pipe socket
and the appropriate tightening torque.
4. Refrigerant Piping Installation
4.1 Length and Level Difference Requirements for the Piping
Connections to the Indoor and Outdoor Units
4.2 Piping Material and Size
4.3 Piping Layout
4.4 Piping Installation
Pipe Material Copper Pipe for Air Conditioner
Refrigerant
Model 22-45
Size(mm)
(Liquid side) Φ6.4
R-410A
(Gas side) Φ12.7

6
Outer diameter of
connecting piping (mm) Tightening torque (N.m)
Φ6.4 14.2~17.2
Φ9.5 32.7~39.9
Φ12.7 49.5~60.3
Φ15.9 61.8~75.4
Φ19.1 97.2~118.6
Caution Caution
Caution
Precautions to take when welding the refrigerant pipes
Open the front plate to remove the screws.
Carry out the air tightness test on the system according to the instructions in the
installation manual of the outdoor unit.
Create a vacuum in the system according to the instructions in the installation
manual of the outdoor unit.
Charge the system with refrigerant according to the instructions in the
installation manual of the outdoor unit.
Charge the system with refrigerant according to the instructions in the
installation manual of the outdoor unit.
Slide the two sliders to the left and right to unlock the panel.
Unit body
Attached insulation heat pump belt
Face upwards
On-site piping side
Figure 4.5
The heat insulation treatment is carried out on the piping at the gas and liquid
sides of the indoor unit respectively.
a. The piping on the gas side must use heat insulation material that can withstand
temperatures of 120°C and more.
b. For the piping connections of the indoor unit, use the insulation casing for
copper pipes to carry out the insulation treatment, and close all gaps.
4.5 Air Tightness Test
4.7 Vacuum
4.8 Refrigerant
4.9 Connecting the Copper Pipes for the Indoor Unit
4.9.1 Open the front panel
4.9.2 Remove front panel
4.6 Heat Insulation Treatment for Gas-Liquid Piping Connections
for the Indoor Unit
• Apply the appropriate tightening torque according to the installation
conditions. Excessive torque will damage the socket cap, and the cap will
not be tight if you apply insufcient torque, leading to leakages.
For the vacuum, make sure that the air and liquid cut-off valves of the
outdoor unit are all closed (maintain the factory status).
• The Air Tightness Test helps to ensure that the air and liquid cut-off
valves of the outdoor unit are all closed (maintain the factory defaults).
• Before you weld the refrigerant pipes, ll the pipes with nitrogen rst to
discharge the air in the pipes. If no nitrogen is filled during welding, a
large amount of oxide lm will form inside the piping which may cause the
air conditioning system to malfunction.
• Welding can be carried out on the refrigerant pipes when the nitrogen gas
has been replaced or relled.
• When the pipe is lled with nitrogen during welding, the nitrogen must be
reduced to 0.02 MPa using the pressure release valve. See Figure 4.4.
Do not let air, dust, and other particles invade the piping system during the
installation of the connecting pipes.
Install the connecting pips only when the indoor and outdoor units are
secured.
Make sure to keep the connecting pipes dry during installation so that no
water will enter the piping system.
Before the socket cap is installed on the pipe socket, apply some refrigerant
oil on the socket (both inside and outside), then rotate it three or four times
before you tighten the cap. See Figure 4.3.
Apply refrigerant oil
Figure 4.3
Figure 4.6
Figure 4.7
Figure 4.4
1 Copper piping
2 Section being brazed
3 Nitrogen connection
4 Hand valve
5Pressure-reducing valve
6 Nitrogen

7
Warning
Remove the front frame from the base of the unit. Turn it up by about 30°, and the
entire frame will then open.
• Tilt the water discharge pipe downwards. Make sure the following
situations do not arise when the water discharge pipes are being
installed:
Once the water discharge piping is installed, inject a small amount of water
into the water pan to check if the drainage is smooth.
• When connecting to a long water discharge pipe, the indoor unit portion
must be covered with insulation casing. Make sure the long pipe does
not become loose.
4.9.3 Remove front frame
5.1 Water Discharge Piping Installation for Indoor Unit
6.1 Power Cord Connection
5.3 Water Discharge Test
5. Water Discharge Piping Installation
6. Electrical Wiring
First install the indoor unit. Then install the outdoor unit. Be careful of bends
and adjust the pipeline accordingly.
Do not expose the pipeline at the back of the indoor unit.
Make sure the water discharge pipes are not loose and moving.
Make sure all the connections in the piping system are properly sealed to
prevent water leakages.
Figure 4.8
Heat insulation material
1.5m~2m
Water discharge pipe
Extended water discharge pipe
Protection piping Wall
Outdoor power
supply
Indoor power
supply
Communication wire between
indoor and outdoor units
Grounding line Wire slot
Indoor unit
Grounding line
RCCB
RCCB
Bending
S-shape
Figure 5.1
Figure 5.2
Figure 6.1
Slope
Caution
Caution
• The condensed water in the rear of the indoor unit is gathered in the
water pan and discharged from the piping. Do not place anything in
the water pan.
• All the supplied parts, materials and electrical works must comply with
local regulations.
• Use only copper wires.
• Use a dedicated power supply for the air-conditioners. The power voltage
must be in line with the rated voltage.
• The electrical wiring works must be carried out by a professional
technician, and must comply with the labels stated in the circuit diagram.
• Before the electrical connection works are carried out, turn off the power
supply to prevent injuries caused by electric shock.
• The external power supply circuit of the air conditioner must include an
earth line, and the earth line of the power cord connecting to the indoor unit
must be securely connected to the earth line of the external power supply.
• Leakage protective devices must be configured according to the local
technical standards and requirements for electrical and electronic devices.
• The fixed wiring connected must be equipped with an all-pole
disconnection device with a minimum 3 mm contact separation.
• The distance between the power cord and signalling line must be at least
300 mm to prevent the occurrences of electrical interference, malfunction
or damage to electrical components. At the same time, these line must not
come in contact with the piping and valves.
• Choose electrical wiring that conforms to the corresponding electrical
requirements.
• Connect to the power supply only after all the wiring and connection works
have been completed, and carefully checked to be correct.
• Use a dedicated power supply for the indoor unit that is different from the
power supply for the outdoor unit.
• Use the same power supply, circuit breaker and leakage protective
device for the indoor units connected to the same outdoor unit.

8
P
Q
Figure 6.2 shows the power supply terminal of the indoor unit.
Figure 6.2
Figure 6.3 Figure 6.4
Figure 6.5
POWER IN
Circular wiring
terminal
Proper power wiring connections
: Copper wire
Insulation
tube
Switch (breakers for
wiring and over current
protection)
Table 6.1
Refer to Tables 6.1 and 6.2 for the specications of the power cord
and communication wire. A wiring capacity that is too small will cause
the electrical wiring to become too hot, and lead to accidents when
the unit burns and becomes damaged.
The wired controller and the indoor unit can be connected in different
manners, depending on the forms of communication.
1. For a bidirectional communication mode:
• Use 1 wired controller to control 1 indoor unit or 2 wired
controllers (one master and one slave controller) to control 1
indoor unit (see Figure 6.7);
• Use 1 wired controller to control multiple indoor units or 2
wired controllers (one master and one slave controller) to
control multiple indoor units (see Figure 6.8);
Breakers with
current leakage
All-pole disconnection
device with leakage
protecto Pull box
Pull box
Pull box
Indoor unit
Indoor unit Indoor unit Indoor unit Outdoor
unit
Outdoor
unit
(Connect the shielded end of the shielded
wire to the electronic controller box sheet
metal " " here)
Connecting the shielded
layer of the shielded wire
Only the last indoor unit requires adding the build-out resistor
at P and Q.
(open)
Signalling line
between outdoor
units
Indoor and outdoor
units Communication
wire
(P Q E)
(P Q E)
Power
cord
220-240V~50/60Hz
220-240V~50Hz
Power supply
When connecting to the power supply terminal, use the circular wiring
terminal with the insulation casing (see Figure 6.3).
Use power cord that conforms to the specications and connect
the power cord rmly. To prevent the cord from being pulled out by
external force, make sure it is xed securely.
If circular wiring terminal with the insulation casing cannot be used,
please make sure that:
• Do not connect two power cords with different diameters to the
same power supply terminal (may cause overheating of wires
due to loose wiring) (See Figure 6.4).
Abbreviations:
MCA: Minimum Circuit Amps kW: Rated motor output
MFA: Maximum Fuse A mps FLA: Full Load Amps
IFM: Indoor Fan Motor
6.2 Electrical Wiring Specications
6.3 Communication Wiring
6.3.1 Communication wiring between the indoor and outdoor units
6.3.2 Communication wiring between the indoor unit and wired
controller
Model 2.8-4.5kW
Power
supply
Phase 1-phase
Volt and frequency 220-240V~50Hz
220-240V~50/60Hz
Communication wire between indoor
and outdoor units Shielded 3xAWG16-AWG18
Communication wire between indoor
unit and wired controller Shielded AWG16-AWG20
Fuse 15A
Table 6.2 Indoor units electrical characteristics
Capacity
Power supply IFM
Hz Volts MCA MFA kW FLA
2.8KW
50
50/60 220-240
0.40 15 0.02 0.32
3.6KW 0.42 15 0.02 0.33
4.5KW 0.53 15 0.02 0.42
Refer to local laws and regulations when deciding on the dimensions for
the power cords and wiring. Get a professional to select and install the
wiring.
Warning
• Use only shielded wires for the communication wiring. Any other type
of wires may produce a signal interference that will cause the units to
malfunction.
• Do not carry out electrical works like welding with the power on.
• All shielded wiring in the network are interconnected, and will eventually
connect to earth at the same point " ".
• Do not bind the refrigerant piping, power cords and communication
wiring together. When the power cord and communication wiring are
parallel, the distance between the two lines must be 300 mm or more in
order to prevent signal source interference.
• Communication wiring must not form a closed loop.
• The indoor and outdoor units communicate via the RS485 serial port.
• The communication wiring between the indoor and outdoor units should be
connected one unit after another in a daisy chain from the outdoor unit to
the nal indoor unit.And the shielded layer must be properly grounded, and
a build-out resistor must be added to the last indoor unit to enhance the
stability of the communication system (see Figure 6.6).
• Incorrect wiring such as a star connection or a closed ring will cause
instability of the communication system and system control anomalies.
• Use a three core shielded wire (greater than or equal to 0.75 mm2for the
communication wiring between the indoor and outdoor units.
Make sure the wiring is connected correctly. The connecting lead for this
communication wire must come from the master outdoor unit.
Figure 6.6
Build-out resistor
P Q E N
L
+
L N