Kinghome KM09HFDI User manual

AIR CONDITIONER
MODEL:KM09HFDI
KM12HFDI
INSTRUCTION MANUAL
KM18HFDI
KM21HFDI
KM24HFDI

User Notice
◆The total capacity of the indoor units which runs at the same time can not exceed 150% of
that of the outdoor units; otherwise, the cooling (heating) effect of each indoor unit would be poor.
◆Switch the main power on 8 hours before start the unit, helpful for a successful startup.
◆It is a normal phenomenon that the indoor unit fan will still run for 20~70 seconds after the
indoor unit receives the “stop” signal so as to make full use of after-heat for the next operation.
◆ When the running modes of the indoor and outdoor units conict, it will be indicated on the
display of the wired controller in ve seconds and then the indoor unit will stop. In this case, they
can back to the normal condition by harmonizing their running modes: The HEAT mode conicts
with each of the COOL mode, DRY mode and FAN mode, while the COOL mode, DRY mode and
FAN mode are compatible between each other. If the supply power fails when the unit is running,
then the indoor unit will send the “start” signal to the outdoor unit three minutes later after power
recovery.
◆During installation, the communication cable and the power cord must not be twisted
together but instead separated with an interval of at least 2cm, otherwise the unit is likely to run
abnormally.
◆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.
This product must not be disposed together with the domestic waste. This product has
to be disposed at an authorized place for recycling of electrical and electronic appliances.

Contents
1 Safety Precautions .......................................................................................... 1
2 Installation Location and Matters Needing Attention ....................................... 2
2.1 How to select the Installation Location for the indoor unit..................................... 2
2.2 Electric Wiring ....................................................................................................... 2
2.3 Earthing Requirements ......................................................................................... 2
2.4 Accessories for Installation ................................................................................... 3
3 Installation Instructions ................................................................................... 4
3.1 Outline Dimension Drawings of the Indoor Unit ................................................... 4
3.2 Dimension Requirements on the Installation Space of the Indoor Unit................. 4
3.3 Installation of the Indoor Unit ................................................................................ 5
3.4 Horizontality Check of the Indoor Unit .................................................................. 6
3.5 Installation of the Air Supply Duct ......................................................................... 6
3.6 Drawings of the Air Supply Outlet and Return Air Inlet ......................................... 7
3.7 Installation of the Return Air Duct ......................................................................... 8
3.8 Installation of the Condensate Pipe ...................................................................... 9
3.9 Design of the Drain Pipe ....................................................................................... 9
3.10 Installation of the Drain Pipe ............................................................................. 10
3.11 Precautions for the Lift Pipe .............................................................................. 11
3.12 Test for the Drainage System............................................................................ 11
3.13 Piping ................................................................................................................ 12
3.14 Insulation for the Refrigerant Pipe .................................................................... 12
3.15 Wiring between the Wire and the Wiring Terminal ............................................ 13
3.16 Wiring of the Power Cord (single-phase) .......................................................... 14
3.17 Wiring of the Signal Line of the Wired Controller .............................................. 16
3.18 Electric Installation ............................................................................................ 16
4 Rated Working Conditions............................................................................. 17
5 Error Analysis ................................................................................................ 18
6 Maintenance.................................................................................................. 19

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1 Safety Precautions
Please read this manual carefully before using and operating correctly as instructed in this
manual.
Please take special attention to the meaning of these two marks:
Warning! It indicates improper operation which will lead to human casualty or severe injury.
Note! It indicates improper operation which will lead to injury or property damage.
Warning:
◆The installation should be committed to the appointed service center; otherwise it will cause
water leakage, electric shock or re etc..
◆Please install the unit at a place where is strong enough to withstand the weight of the unit;
otherwise, the unit would fall down and cause injury or death.
◆The drain pipe should be installed as instructed in the manual to guarantee the proper
drainage; meanwhile it should be insulated to prevent condensing; otherwise the improper
installation would cause water leakage and then wet the household wares in the room.
◆ Do not use or place any inammable, combustible or any noxious substance next to the unit.
◆Under the occurrence of an error (like burning smell etc.), please cut off the main power
supply of the unit.
◆ Keep good ventilation in the room to avoid oxygen decit.
◆ Never insert your nger or any other object into the air outlet/inlet grille.
◆Please take notice of the supporting frame of the unit to see if it is damaged over the long
time period of use.
◆ Never ret the unit and contact the sales agent or the professional installation personnel for
the repair or relocation of the unit.
An all-pole disconnection switch having a contact separation of at least 3mm in all poles
should be connected in xed wiring.
Caution!
◆Before installation, please check if the power supply corresponds with the requirement
specied on the nameplate and also check its security.
◆Before using the unit, please check if the piping and wiring are correct to avoid water
leakage, refrigerant leakage, electric shock, or re etc.
◆The main power supply must be earthed to avoid the hazard of electric shock and never
connect this earth wire to the gas pipe, running water pipe, lightening rod or phone cable’s earth
lead.
◆ Turn off the unit after it runs at least ve minutes; otherwise its service life will be shortened.
◆Do not allow children operate this unit.
◆Do not operate this unit with wet hands.
◆
Cut off the main power supply prior to the cleaning of the unit or the replacement of the air lter.
◆When the unit is not to be used for a long time, please cut off the main power supply of the unit.
◆Do not expose the unit to the moist or corrosive circumstances.
◆After the electric installation, please take an electric leakage test.

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2 Installation Location and Matters Needing Attention
The installation of the unit must comply with the national and local safety
regulations. The installation quality directly affects the normal use, so the user should
not carry out the installation personally, instead, the installation and debugging should
be done by technician according to this manual. Only after that, can the unit be
energized.
2.1 How to select the Installation Location for the indoor unit
(1). Where there is no direct sunlight.
(2). Where the top hanger, ceiling and the building structure are strong enough to withstand the
weight of the unit.
(3). Where the drain pipe can be easily connected to outside.
(4). Where the ow of the air inlet and outlet are not blocked.
(5). Where the refrigerant pipe of the indoor unit can be easily led to outside.
(6). Where there is no inammable, explosive substances or their leakage.
(7). Where there is no corrosive gas, heavy dust, salt mist, smog or moisture.
CAUTION!
The unit which is installed in the following places is likely to run abnormally. If unavoidable,
please contact the technician at the .,1*+20( appointed service center：
①Where is full of oil;
② Alkaline soil off the sea;
③ Where there is sulfur gas(like sulfur hot spring);
④Where there are devices with high frequency (like wireless devices, electric welding devices,
or medical equipments);
⑤ Special circumstances.
2.2 Electric Wiring
(1). The installation must be done in accordance with the national wiring regulations.
(2). Only the power cord with the rated voltage and exclusive circuit for the air conditioning can
be used.
(3). Do not pull the power cord by force.
(4). The electric installation should be carried out by the technician as instructed by the local
laws, regulations and also this manual.
(5). The diameter of the power cord should be large enough and once it is damaged it must be
replaced by the dedicated one.
(6). The earthing should be reliable and the earth wire should be connected to the dedicated
device of the building by the technician. Besides, the air switch coupled with the leakage
current protection switch must be equipped, which is of enough capacity and of both
magnetic and thermal tripping functions in case of the short circuit and overload.
2.3 Earthing Requirements
(1). The air conditioner is classied into the Class I appliances, so its earthing must be reliable.
(2). The yellow-green line of the air conditioner is the earth line and can not be used for other

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purpose, cut off or fixed by the tapping screw; otherwise it would cause the hazard of
electric shock.
(3). The reliable earth terminal should be provided and the earth wire can not be connected to
any of the following places：
①.
Running water pipe;
②.
Coal gas pipe;
③.
Sewage pipe;
④.
Other places where the technician think unreliable.
2.4 Accessories for Installation
Refer to the packing list for the accessories of the indoor and outdoor units respectively.

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3 Installation Instructions
3.1 Outline Dimension Drawings of the Indoor Unit
Fig.1 is applicable to .0+)',,.0+)',,.0+)',.0+)',.0+)',
A
B
D
E
G
I
C
J
F
H
Backward
Return Air
Electric BoxLi quid Pipe Gas Pipe
Drain Pipe
Downward Return Air
Fig.1
Table 1: Outline Dimensions
Item
Model A B C D E F G H I J
.0+)',
742 491 662 620 700 615 782 156 200 635
.0+)',
.0+)', 942 491 862 820 900 615 982 156 200 635
.0+)', 1142 491 1062 1020 1100 615 1182 156 200 635
.0+)',
3.2 Dimension Requirements on the Installation Space of the Indoor Unit
Nut with
washer
＞500 ＞250
Spring
pad
Fig. 2

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3.3 Installation of the Indoor Unit
(1). Requirements on the Installation Location
1) Ensure the hanger is strong enough to withstand the weight of the unit.
2) The drainage pipe is easy for connection.
3) No obstacle is in the inlet/outlet and the air circulation is in good condition.
4) Ensure the installation space shown in Fig.2 is left for the access to maintenance.
5) It should be far away from where there is heat source, leakage of inammable, explosive
substances, or smog.
6) It is the ceiling type unit (concealed in the ceiling).
7) The power cords and connection lines of the indoor and outdoor units must be at least 1m
away from the TV set or radio to avoid the image interference and noise ( even if 1m is kept, the
noise may be produced due to the strong electromagnetic wave).
(2). Installation of the Indoor Unit
Insert the M10 expansion bolt into the hole, and then knock the nail into the bolt. Refer to the
Outline Dimension Drawings of the Indoor Unit for the distance between holes and see Fig.3 for the
installation of the expansion bolt.
Air conditioning unit
Hanger bolt
Anchor
Fig.3 Fig.4
Install the hanger on the indoor unit, as shown in Fig.4.
Install the indoor unit on the ceiling, as shown in Fig.5.
≤48mm
Fig.5
CAUTION!
① .
Prior to the installation, please make a good preparation for all piping (refrigerant pipe,
drain pipe) and wiring (wires of the wired controller, wires between the indoor and outdoor unit) of
the indoor unit to make the further installation much easier.

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② .
If there is an opening in the ceiling, it is better to reinforce it to keep it at and prevent it
vibrating. Consult the user and builder for more details.
③ .
If the strength of the ceiling is not strong enough, a beam made of angle iron can be used
and then x the unit on it.
④ .
If the indoor unit is not installed in the air conditioning area, please use sponge around
the unit to prevent condensing. The thickness of the sponge depends on the actual installation
environment.
3.4 Horizontality Check of the Indoor Unit
After the installation of the indoor unit, its horizontality must be checked to make sure the unit
keep horizontal fore and aft and keep an inclination of 5° toward the drain pipe right and left, as
shown in Fig.6.
Horizontality Check Device
Fig.6
3.5 Installation of the Air Supply Duct
(1). Installation of the Rectangular Air Supply Duct
4 6 83 75
1
2
3
Return air Supply air Return air
Fig.7
Table 2
No. Name No. Name
1 Hanger 5 Plenum Box
2Return Air Duct 6 Filter Screen
3 Canvas Duct 7 Main Air Supply Duct
4Return Air Inlet 8 Air Supply Outlet
(2). Installation of the Round Air Supply Duct

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1
2
4
3
5 6 7
8 9
Fig.8
Table 3
No. Name No. Name
1Return Air Duct 6Transition Duct
2 Canvas Duct 7Air Supply Duct
3Return Air Louver 8Diffuser
4 Hanger 9Diffuser Joint
5 Air Supply Outlet
(3). Installation Steps of the Round Air Supply Duct
1). Preinstall the outlet of the round duct on the transition duct and then x it by the tapping
screw.
2). Place the transition duct to the air outlet of the unit and x it with rivet.
3). Connect the outlet to the duct and then tighten them with tape. Other installation details are
not covered herein.
CAUTION!
① .
The maximum length of the duct means the maximum length of the air supply duct plus the
maximum length of the return air duct.
② .
For the unit with the auxiliary electric heating function, if the round duct is to be adopted,
then the straight length of the transition duct can not be less than 200mm.
③ .
The duct is either rectangular or round and connected with the air inlet/outlet of the indoor
unit. Among all air supply outlets, at least one should be kept open. As for the round duct, it needs
a transition duct of which the size should match with the air supply outlet of the unit. After the tting
of the transition duct, it is the turn of the round duct, which is better to be kept 10 meters far away
from the corresponding diffuser. The standard accessories supplied by .21*+20 is the transition duct
200mm long and round air outlet φ200, however, those of other specications can be purchased.
3.6 Drawings of the Air Supply Outlet and Return Air Inlet

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21
A
B
D
C
Fig.9 Air Supply Outlet Fig.10 Return Air Inlet
Table 4 Dimensions of the Air Supply Outlet and Return Air Inlet (unit: mm)
Item
Model
Air Supply Outlet Return Air Inlet
A B C D
KM09HFDI
156 662 580 162
KM12HFDI
KM18HFDI 156 862 780 162
KM21HFDI
156 1062 980 162
KM24HFDI
3.7 Installation of the Return Air Duct
(1).
cover plate is in the bottom, as shown in Fig.11.
Return Air Cover Plate
Downward Return Air
Backward Return Air
Rectangular Flange
Fig.11
(2).
the return air cover plate.
(3). Connect one end of the return air duct to the return air outlet of the unit by rivets and the
other to the return air louver. For the sake of the convenience to freely adjust the height, a
cutting of canvas duct will be helpful, which can be reinforced and folded by ８＃ iron wire.
(4). More noise is likely to be produced in the downward return air mode than the backward
noise.
(5). The installation method can be chosen with considering the conditions of the building and
maintenance etc., as shown in Fig.12.

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1
Wind supply
Back wind
Install the back wind pipe (a)
Wind supply
Install the back wind pipe(b)
Back wind
1
2
4
5
3
64
5
Fig.12
Table 5 Parts and Components of the Return Air Duct
No. Name No. Name
1Return Air Louver(with the lter screen) 4 Indoor Unit
2 Canvas Duct 5 Air Supply Duct
3Return Air Duct 6 Access Grille
3.8 Installation of the Condensate Pipe
(1). The condensate pipe should keep a inclination angle of 5～10 °, which can facilitate
the drainage of the condensate water. And the joints of the condensate pipe should be
insulated by the insulation material to prevent condensing(see Fig.13).
Insulating Layer for the Condensate Pipe
Pipe Lid
Fig.13 Thermal Insulation of the Condensate Pipe
(2). There is a condensate outlet on both left and right sides of the unit. Once one is conrmed
to be used, the other should be clogged by a rubber plug, bundled by the binding wire and
insulated by the insulation material to avoid water leakage.
(3). The right outlet is defaulted to be clogged with a plug.
CAUTION! No water leakage is allowed on the joint of the condensate pipe.
3.9 Design of the Drain Pipe
(1). The drain pipe should always keep an inclination angle(1/50 ～1/100) to avoid the water
gathering in some certain place.
(2). During the connection of the drain pipe and device, do not impose too much force on the
pipe on one side of the device and the pipe should be xed as close as to the device.
(3). The drain pipe can be the ordinary hard PVC pipe which can be purchased locally. During
the connection, inset the end of the PVC pipe to the drain outlet, then tighten it with the
drain hose and binding wire but never connect the drain outlet and the drain hose by
adhesive.

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(4). When the drain pipe is used for multiple devices, the public section of the pipe should be
100mm lower than the drain hole of each device and it is better to use the much thicker
pipe for such a purpose.
3.10 Installation of the Drain Pipe
(1). The diameter of the drain pipe should be larger than or equal to that of the refrigerant pipe
(PVC pipe, outer dimater:25mm, wall thickness ≥1.5mm.
(2). The drain pipe should be as short as possible and with at least a 1/100 degree of slope to
avoid forming air pockets.
(3). If the proper degree of slope of the drain pipe is not allowed, a lift pipe should be installed.
(4). A distance 1-1.5m should be kept between the hangers to avoid the drain hose making a
turn.
1~1.5m
(Right) with a min. degree of slope 1/100
(Wrong)
Fig.14
(5). Insert the drain hose into the drain hole and tighten it with clamps.
(6). Wrap the clamps with large amount of sponge for thermal insulation.
(7). The drain hose inside the room also should be insulated.
Clamp (accessory)
Sponge (gray) Drain Hose
Sponge (accessory)
Clamp
(accessory)
Max. 4mm
Fig.15

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3.11 Precautions for the Lift Pipe
The installation height of the lift pipe should be less than 850mm. It is recommended to set an
inclination angle 1° ～2° for the lift pipe toward the drainage direction. If the lift pipe and the unit
form a right angle, the height of the lift pipe must be less than 800mm.
1°～2°
1~1.5m
≤1000mm
≤850mm
≤300mm
150mm
①②
Ceiling
Clamp (accessory)
Drain Hose (accessory)
Lift Pipe
Hanger Bracket
Fig.16
Notes:
① .
The inclination height of the drain hose should be within 75mm so that the outlet of the
drain hose does not suffer the external force.
② .
If multiple drain pipes converge, please follow the installation steps below.
I
- Joint of drain pipe
The specification of the joint of the drain pipe should be suitable to the running capacity of the unit
Drain Hose (accessory)
Max.75mm
Max.1000mm
Fig.17
3.12 Test for the Drainage System
(1). After the electric installation, please take a test for the drainage system.
(2). During the test, check if the water flow goes through the pipe correctly and observe

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carefully the joint to see if it leaks or not. If this unit is installed in the newly built house, it is
suggested to take this test prior to the ceiling decoration.
3.13 Piping
(1). Let the are end of the copper pipe point at the screw and then tighten the screw by hand.
(2). After that, tighten the screw by the torque wrench until it clatters (as shown in Fig.18).
PipePipe Flare Nut
Spanner
Fig.18
Table 6 Moments of Torque for Tightening Screws
Diameter of Pipe(mm) Moment of Torque (N·m)
φ6.35 15-30
φ9.52 35-40
φ12 45-50
φ15.9 60-65
(3). The bending degree of the pipe can not be too small; otherwise it will crack. And please use
a pipe tube bender to bend the pipe.
(4). Wrap the exposed refrigerant pipe and the joints by sponge and then tighten them with the
plastic tape.
CAUTION!
① .
During the connection of the indoor unit and the refrigerant pipe, never pull any joints of the
indoor unit by force; otherwise the capillary pipe or other pipe may crack, which then would result in
leakage.
② .
The refrigerant pipe should be supported by brackets, that is, don’t let the unit withstand the
weight of it.
If the specication of the outdoor unit pipe joint does not conform to that of the indoor unit, then
the joint specication of the outlet pipe of the indoor unit takes precedence. A reducing nipple shall
be installed at the joint of the outdoor unit so as to make the joint of the outdoor unit compatible
with that of the indoor unit.
3.14 Insulation for the Refrigerant Pipe
(1). The refrigerant pipe should be insulated by the insulating material and plastic tape in order
to prevent condensation and water leakage.
(2). The joints of the indoor unit should be wrapped with the insulating material and no gap is

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allowed on the joint of the indoor unit, as shown in Fig.19.
No gap
Fig.19
CAUTION!
After the pipe is protected well enough, never bend it to form a small angle; otherwise it would
crack or break.
(3). Wrap the pipe with tape.
1). Bundle the refrigerant pipe and electric wire together with tape, and separate them from the
drain pipe to prevent the condensate water overowing.
2). Wrap the pipe from the bottom of the outdoor unit to the top of the pipe where it enters the
wall. During the wrapping, the later circle should cover half of the former one.
3). Fix the wrapped pipe on the wall with clamps.
CAUTION!
① .
Do not wrap the pipe too tightly; otherwise the insulation effect would be weakened.
Additionally, make sure the drain hose is separated from the pipe.
② .
After that, ll the hole on the wall with sealing material to prevent wind and rain coming into
the room.
3.15 Wiring between the Wire and the Wiring Terminal
(1). Wiring of the Single-Core Wire
1). Strip the insulating layer at the end of the wire about 25mm off with a wire striper.
2). Loosen the screw off on the wiring board of the air conditioning unit.
3). Shape with the pliers at the end of the wire to a circle matching with the size of the screw.
4). Let the screw go through the circle of the wire and then x it on the wiring board.
(2). Wiring of the Multi-Core Wire
1). Strip the insulating layer at the end of the wire about 100mm off with a wire striper.
2). Loosen the screw off on the wiring board of the air conditioning unit.
3). Fix a wiring terminal matching with the size of the screw to the end of the multi-core wire
with the crimpling pliers.
4). Let the screw go through the terminal of the multi-core wire and then x it on the wiring
board.

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A.Single-Cored Wire B.Mulit-Cored Wire
Insulating layer
Wiring Terminal
25
10
Fig.20
WARNING!
① .
If the power cord or the signal line is damaged, they must be replaced with the dedicated
one.
② .
Prior to the wiring, please check the voltage marked on the nameplate and then carry out
the wiring following the wiring diagram.
③ .
The dedicated power cord must be used for the air conditioning unit and the electrical
leakage protection switch and air switch must be installed in case of the overload condition.
④ .
The air conditioning unit must be earthed to prevent the hazard caused by the failed
insulation.
⑤ .
During the wiring, the wiring terminal or the single-core wire must be used; the direct wiring
between the multi-core wire and wiring board would cause re.
⑥ .
All wiring should be done strictly in accordance with the wiring diagram; otherwise the
improper wiring would cause the air conditioning unit running abnormally or damaged.
⑦ .
Do not let the electric wires touch the refrigerant pipe, the compressor, the fan or other
moving parts.
⑧ .
Do not modify the wiring inside the indoor unit randomly; otherwise the manufacturer won’t
assume any responsibility for the damage or abnormal running of the unit.
3.16 Wiring of the Power Cord (single-phase)
CAUTION!
The power supply for each indoor unit must be uniform.
①.
Dismantle the cover of the electric box of the indoor unit.
②.
Let the power cord go through the rubber ring.
③.
Put the 4-core cable through the hole of the chassis and the bottom of the appliance
upward, and then connect the power line and the communication line from the outdoor
unit to the corresponding terminals N(1), 2, 3 , and grounding terminal of the indoor unit.
Wiring shall be done properly as per the wiring diagram. (Note: Be sure the wring terminals
A/B/C/D and piping joints A/B/C/D of the indoor unit match with that of the outdoor unit
respectively).
④.
Fix the power cord tightly with the binding wire.
KM36H4O

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POWER
INDOOR UNIT D INDOOR UNIT C INDOOR UNIT B INDOOR UNIT A
XT XT XT2
OUTDOOR UNIT
Fig.21
KM42H4O
POWER
INDOOR UNIT AINDOOR UNIT BINDOOR UNIT CINDOOR UNIT D
OUTDOOR UNI
T
INDOOR UNIT E
XT2
XT1
XT3
XT4
XT5
XT6
G
G
G
G
G
Fig.22
L2 L1
L2
L1

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3.17 Wiring of the Signal Line of the Wired Controller
(1). Open the cover of the electric box of the indoor unit.
(2). Let the signal line go through the rubber ring.
(3). Insert the signal line to the four-pin socket on the printed circuit board of the indoor unit.
(4). Fix the signal line with the binding wire.
3.18 Electric Installation
Table 7
Indoor Unit
Power Supply
Running
Current
(A)
Input Power(W) Recommended
Power Cord
(Sectional Area×
Pieces)
Type Model Indoor Fan
Motor Cooling Heating
Cooling
and
Heating
.0+)', 208/230V~ 60Hz 0.406 75 75 AWG18×4
KM12HFDI 208/230V~ 60Hz 0.348 65 65 AWG18×4
KM18HFDI 208/230V~ 60Hz 0.428 80 80 AWG18×4
KM21HFDI 208/230V~ 60Hz 0.588 110 110 AWG18×4
KM24HFDI 208/230V~ 60Hz 0.588 110 110 AWG18×4
Notes:
The sectional area listed above is applicable to the power cord with at most a length of 15
meters. For the longer cord, its sectional area should be enlarged to avoid the cord burning out
caused by the over-current.