Kaysun KPD-35 DVN11 User manual

INSTALLATION MANUAL
A6 Duct
KPD-35 DVN11
KPD-52 DVN11
KPD-71 DVN11
KPD-90 DVN11
KPD-105 DVN11
KPD-105 DTN11
KPD-140 DVN11
KPD-140 DTN11
KPD-160 DTN11
KPD-52 DVR11
KPD-71 DVR11
KPD-105 DVR11
KPD-105 DTR11
KPD-140 DTR11
KPD-160 DTR11
IMPORTANT NOTE:
Read this manual carefully before installing or operating your new air conditioning unit. Make sure
to save this manual for future reference.

2
Set
(indoor unit, outdoor unit)
For R-410 units
For R32 units
KPD-35 DVN11
(KPD-35 DR11, KUE-35 DVN11)
✓
✗
KPD-52 DVN11
(KPD-52 DR11, KUE-52 DVN10)
✓
✗
KPD-71 DVN11
(KPD-71 DR11, KUE-71 DVN10)
✓
✗
KPD-90 DVN11
(KPD-90 DN11, KUE-90 DVN10)
✓
✗
KPD-105 DVN11
(KPD-105 DR11, KUE-105 DVN10)
✓
✗
KPD-105 DTN11
(KPD-105 DR11, KUE-105 DTN10)
✓
✗
KPD-140 DVN11
(KPD-140 DR11, KUE-140 DVN10)
✓
✗
KPD-140 DTN11
(KPD-140 DR11, KUE-140 DTN10)
✓
✗
KPD-160 DTN11
(KPD-160 DR11, KUE-160 DTN10)
✓
✗
KPD-52 DVR11
(KPD-52 DR11, KUE-52 DVR11)
✗
✓
KPD-71 DVR11
(KPD-71 DR11, KUE-71 DVR11)
✗
✓
KPD-105 DVR11
(KPD-105 DR11, KUE-105 DVR11)
✗
✓
KPD-105 DTR11
(KPD-105 DR11, KUE-105 DTR11)
✗
✓
KPD-140 DTR11
(KPD-140 DR11, KUE-140 DTR11)
✗
✓
KPD-160 DTR11
(KPD-160 DR11, KUE-160 DTR11)
✗
✓

3
Table of Contents
Installation Manual
Accessories .................................................... 05
Safety Precautions ..................................... 06
Installation Overview ............................... 08
Indoor Unit Installation ........................... 09
a. Indoor Unit Parts ........................................ 09
b. Indoor Unit Installation Instructions ........ 09
Outdoor Unit Installation ......................... 14
a. Outdoor Unit Installation Instructions ....... 14
b. Outdoor Unit Types and Specifications.... 15
c. Notes on Drilling Hole in Wall .................. 16
Drainpipe Installation 17
1
2
5
3
4
6

4
8
Refrigerant Piping Connection ................ 19
A. Notes on Pipe Length and Elevation ............ 19
B. Refrigerant Piping Connection Instructions ...21
L N
Wiring ................................................. 22
a. Outdoor Unit Wiring ................. 22
b. Indoor Unit Wiring ................... 23
c. Power Specifications .................. 25
Air Evacuation.................................................. 27
a. Evacuation Instructions ................................ 27
b. Note on Adding Refrigerant ....................... 28
Test Run .......................................................................................... 29
European Disposal Guidelines ............................ 30
Information Servicing ............................................................... 31
Additional Installation Guide .......................................................... 37
Caution: Risk of fire
(R32 refrigerant)
MC
MC
7
9
10
11
12
13

Optional accessories
The air conditioning system comes with the following accessories. Use all the installation parts
and accessories to install the air conditioner. Improper installation may result in water leakage,
electrical shock and fire, or equipment failure.
NAME
SHAPE
QUANTITY
Tubing & Fittings
Soundproof / insulation sheath
2
Seal sponge (some models)
1
Orifice (some models)
1
Drainpipe Fittings
(for cooling & heating)
Drain joint (some models)
1
Seal ring (some models)
1
EMC Magnetic Ring
(some models)
Magnetic ring
(wrap the electric wires S1 & S2 ( P & Q & E )
around the magnetic ring twice)
S1&S2(P&Q&E)
1
Magnetic ring
(Hitch on the connective cable between the indoor
unit and outdoor unit after installation.)
1
Others
Owner‘s manual
1
Installation manual
1
Transfer connector(Φ12.7-Φ15.9)/
(
Φ 0.5in- Φ0.6 3
)
i
(
n
Packed with the indoor unit )
NOTE: Pipe size may differ from appliance to
appliance. To meet different pipe size requirements,
sometimes the pipe connections need a transfer
connector installed on the outdoor unit.
1
(on some models)
Transfer connector(Φ6.35-Φ9.52)/
(Φ0.25in-Φ0.37)5(Packed with the indoor unit)
NOTE: Pipe size may differ from appliance to
appliance. To meet different pipe size requirements,
sometimes the pipe connections need a transfer
connector installed on the outdoor unit.
1
(on some models)
Transfer connector(Φ9.52-Φ12.7)/
(
Φ 0.375in- Φ0. 5
)
in
(Packed with the indoor unit, used
for multi-type models only )
NOTE: Pipe size may differ from appliance to
appliance. To meet different pipe size requirements,
sometimes the pipe connections need a transfer
connector installed on the outdoor unit.
1
(on some models)
Connecting wire for display (2m)
1(on some models)
Cord protection rubber ring
1(on some models)
•
There are two types of remote controls: wired and wireless.
Select a remote controller based on customer preferences and requirements and install in an
appropriate place.
Refer to catalogues and technical literature for guidance on selecting a suitable remote controller.

6
Read Safety Precautions Before Installation
Incorrect installation due to ignoring instructions can cause serious damage or injury.
The seriousness of potential damage or injuries is classified as either a WARNING or CAUTION.
WARNING
CAUTION
WARNING
• The appliance shall be stored in a room without continuously operating ignition sources
(for example: open flames, an operating gas appliance or an operating electric heater).
• Do not pierce or burn.
•
The appliance shall be stored to prevent mechanical damage from occurring.
• Be aware that the refrigerants may not contain an odor.
• Compliance with national gas regulations shall be observed.
• Keep ventilation openings clear of obstruction.
• A warning that the appliance shall be stored in a well-ventilated area where the room size
corresponds to the room area as specified for operation.
•
Any person who is involved with working on or breaking into a refrigerant circuit should hold a
current valid certificate from an industry-accredited assessment authority, which authorizes their
competence to handle refrigerants safely in accordance with an industry recognized assessment
specification.
• Servicing shall only be performed as recommended by the equipment manufacturer.
Maintenance and repair requiring the assistance of other skilled personnel shall be carried out
under the supervision of the person competent in the use of flammable refrigerants.
• Appliance shall be stored in a well-ventilated area where the room size corresponds to the room
area as specified for operation.
• Appliance shall be stored in a room without continuously operating open flames (for example
an operating gas appliance) and ignition sources (for example an operating electric heater).
• Appliance shall be installed, operated and stored in a room with a floor area larger than X m²,
installation of pipe-work shall be kept to a minimum X m² (Please see the following form).
The appliance shall not be installed in an unventilated space, if that space is smaller than X m²
(Please see the following form). Spaces where refrigerant pipes shall be compliance with
national gas regulations.
• The appliance shall be stored in a room without continuously operating ignition sources
(for example: open flames, an operating gas appliance or an operating electric heater).
•
Do not pierce or burn.
• The appliance shall be stored to prevent mechanical damage from occurring.
•
Be aware that the refrigerants may not contain an odor.
•
Compliance with national gas regulations shall be observed.
•
Keep ventilation openings clear of obstruction.
• A warning that the appliance shall be stored in a well-ventilated area where the room size
corresponds to the room area as specified for operation.
Failure to observe a warning may result in death. The appliance must be installed in
accordance with national regulations.
Failure to observe a caution may result in injury or equipment damage.

7
Model
(Btu/h)
Amount of refrigerant
to be charged (kg)
maximum installation
height (m)
Minimum room
area (m²)
≤30000
≤2.048
1.8m
4
30000-48000
2.048-3.0
1.8m
8
>48000
>3.0
1.8m
9
Explanation of symbols displayed on the indoor unit or outdoor unit
(applicable to the unit adopts R32 Refrigerant only):
WARNING
This symbol shows that this appliance uses a flammable refrigerant. If the
refrigerant is leaked and exposed to an external ignition source, there is a
risk of fire.
CAUTION
This symbol shows that the operation manual should be read carefully.
CAUTION
This symbol shows that a service personnel should be handling this
equipment with reference to the installation manual.
CAUTION
CAUTION
This symbol shows that information is available such as the operating
manual or installation manual.
WARNING
•
•
•Appliance shall be stored in a well-ventilated area where the room size corresponds to the room
area as specified for operation.
•
•Appliance shall be installed, operated and stored in a room with a floor area larger than X m²,
installation of pipe-work shall be kept to a minimum X m² (Please see the following form).
1. This air-conditioning unit contains fluorinated gasses. For specific information on the type of gas
and the amount, please refer to the relevant label on the unit itself.
2. Installation, service, maintenance and repair of this unit must be performed by a certified technician.
3. Product uninstallation and recycling must be performed by a certified technician.
4. If the system has a leak-detection system installed, it must be checked for leaks at least every 12
months.
5. When the unit is checked for leaks, proper record-keeping of all checks is strongly recommended.
Note about Fluorinated Gasses

8
INSTALLATION ORDER
Install the indoor unit
(Page 8)
Install the outdoor unit
(Page 13)
Install the drainpipe
(Page 16)
Evacuate the refrigeration system
(Page 27)
Connect the
wires (Page
22)
Connect the refrigerant pipes
(Page 18)
Perform a test run
(Page 29)
Installation Overview

9
CAUTION
DO NOT install the unit in the following
locations:
In areas with oil drilling or fracking
In areas with caustic gases in the air, such as
In areas with power fluctuations, such as
factories
In areas with strong electromagnetic waves
In areas that store flammable materials or gas
Air inlet
Electric control cabinet
Air filter (on some models)
Air outlet
Fig. 4.1
Drain hose
Refrigerant connecting pipe
Safety Precautions
Indoor Unit Installation Instructions
Step 1: Select installation location
The indoor unit should be installed in a location
that meets the following requirements:
o
√
Enough room exists for installation and
maintenance.
o
√
Enough room exists for the connecting pipe
and drainpipe.
√
o The ceiling is horizontal and its structure can
sustain the weight of the indoor unit.
o
√ The
air inlet and outlet a r e not impeded.
o
√ The airflow can fill the enti
r e r oom.
o
√ The
r e is no di r ect radiation fr om heaters.
o
√ Models with a
cooling capacity of 9000Btu to
18000Btu only apply to one room.
Maintenance roomage
20cm or more 30cm or more
60cmX60cm
checking orifice Fig. 4.2
Indoor Unit Installation
Indoor Unit Parts
WARNING
Securely install the indoor unit on a structure
that can sustain its weight. If the structure is
too weak, the unit may fall causing personal
injury, unit and property damage or death.
DO NOT install the indoor unit in the
bathroom or laundry room as excessive
moisture can short the unit and corrode the
wiring.
CAUTION
• Install the indoor and outdoor units, cables
and wires at least 1m (3.2’) from televisions
or radios to prevent static or image
distortion. Depending on the appliances, a
1m (3.2’) distance may not be sufficient.
• If the indoor unit is installed on a metal
part of the building, it must be electrically
grounded.

10
Step 2: Hang indoor unit.
1. Please refer to the following diagrams to locate the four positioning screw bolt holes on the
ceiling. Be sure to mark the places where you will drill ceiling hook holes.
Table 4-1 (unit: mm/inch)
MODEL
(Btu/h)
Outline dimension (mm/inch)
Air outlet opening
size (mm/inch)
Air return opening
size (mm/inch)
Size of mounted lug
(mm/inch)
A
B
C
D
E
F
G
H
I
J
12K with
out-built
drain
pump
975/38.4
200/7.9
506/19.9
450/17.7
152/6
537/21.1
186/7.3
599/23.6
741/29.2
360/14.2
18K with
out-built
drain
pump
1055/41.5
210/8.3
674/26.5
600/23.6
136/5.4
706/27.8
190/7.5
782/30.8
920/36.2
508/20
24K
1100/43.3
249/9.8
774/30.5
700/27.6
175/6.9
926/36.5
228/8.9
1001/39.4
1140/44.9
598/23.5
30K ~36K
1360/53.5
249/9.8
774/30.5
700/27.6
175/6.9
1186/46.7
228/8.9
1261/49.6
1400/55.1
598/23.5
36K ~60K
1200/47.2
300/11.8
874/34.4
800/31.5
227/8.9
1044/41.1
280/11
1101/43.3
1240/48.8
697/27.4
Air outlet dimensions
Air inlet dimensions
Air filter
Descending ventilation opening and mounted hook
Air filter
Electric control box
Fig. 4.3

11
CAUTION
The unit body must be completely aligned with
the hole. Ensure that the unit and the hole are
the same size before moving on.
Wood
Place the wood mounting across the roof beam,
then install the hanging screw bolts. (See Fig.4.4)
Wood mounting
Fig. 4.4
New concrete bricks
Inlay or embed the screw bolts. (See Fig. 4.5)
(Blade shape insertion) (Slide insertion)
Fig. 4.5
Original concrete bricks
Use an embedding screw bolt, crock, and stick
harness. (See Fig.4.6)
3. Install hanging screw bolts.
Cut off the roof beam.
Strengthen the point at which the cut was
made. Consolidate the roof beam.
4. After you select an installation location, align
the refrigerant pipes, drain pipes, as well as
indoor and outdoor wires with their
connection points before mounting the unit.
5. Drill 4 holes 10cm (4”) deep at the ceiling
hook positions in the internal ceiling. Be sure
to hold the drill at a 90° angle to the ceiling.
6. Secure the bolt using the washers and nuts
provided.
7. Install the four suspension bolts.
8. Mount the indoor unit with at least two
people to lift and secure it. Insert suspension
bolts into the unit’s hanging holes. Fasten
them using the washers and nuts provided.
(See Fig. 4.8).
Steel bar
Embedding screw bolt
(Pipe hanging and embedding screw bolt)
Fig. 4.6
Steel roof beam structure
Install and use the supporting steel angle.
(See Fig.4.7)
Hanging screw bolt
Fig. 4.7
Fig. 4.8
9. Mount the indoor unit onto the hanging
screw bolts with a block. Position the indoor
unit flat using a level indicator to prevent
leaks. (See Fig. 4.9).
Shockproof cushion
Screw nut
2. Install and fit pipes and wires after you have
finished installing the main body. When
choosing where to start, determine the
direction of the pipes to be drawn out.
Especially in cases where there is a ceiling
involved, align the refrigerant pipes, drain
pipes, and indoor and outdoor lines with their
connection points before mounting the unit.
Washer
Hanging screw bolt
Overhang part
Fig. 4.9
NOTE: Confirm the minimum drain tilt is 1/100
or more.

12
Step 3: Duct and accessories installation
1. Install the filter (optional) according to the size
of the air inlet.
2. Install the canvas tie-in between the body and
duct.
3. The air inlet and air outlet duct should be far
enough apart enough to avoid air passage
short-circuit.
4. Connect the duct according to the following
diagram:
Canvas tie-in Canvas tie-in
Fig. 4.10
5. Refer to the following static pressure guidelines
when installing the indoor unit.
Table.4-2
MODEL
(Btu/h)
Static Pressure
(Pa)
18K
0~100
24K
0~160
30K~36K
0~160
42K~60K
0~160
Change the fan motor static pressure
according to external duct static pressure.
Air outlet
Air inlet
Air dust filter
NOTE: 1. Do not place the connecting duct
weight on the indoor unit.
2.When connecting the duct, use a
nonflammable canvas tie-in to prevent vibrating.
3.Insulation foam must be wrapped outside the
duct to avoid condensate. An internal duct
underlayer can be added to reduce noise,
if the end-user requires.

13
Air return flange
Step 4: Adjust the air inlet direction
(From rear side to under-side.)
1. Take off the ventilation panel and flange.
Step 5: Fresh air duct installation
Dimension:
Duct joint for fresh air
Fig. 4.11
2. Change the mounting positions of the
ventilation panel and air return flange.
Ventilation panel
Fig. 4.12
Fig. 4.14
Step 6: Motor and drain pump maintenance
(the rear ventilated panel is used as an example)
Motor maintenance:
1. Take off the ventilated panel.
2. Take off the blower housing.
3. Take off the motor.
3. When installing the filter mesh, fit it into the
flange as illustrated in the following figure.
Fig. 4.13 Pump maintainance:
Mofor
Blower housing
Ventilated panel
Fig. 4.15
1. Remove four screws from the drain pump.
2. Unplug the pump power supply and water
level switch cable.
3. Detach the pump.
Fig. 4.16
Air return flange
NOTE: All the figures in this manual are for
demonstration purposes only. The air conditioner
you have purchased may be slightly different in
design, though similar in shape.
MODLE
18-60
Ø125mm(4.92”) Ø160mm (6.3”)

14
CAUTION
Outdoor Unit Installation Instructions
Step 1: Select installation location.
The outdoor unit should be installed in the
location that meets the following requirements:
o
√ The a
r ea must be fr ee of combustible gases
and chemicals.
o
√ The
pipe length between the outdoor and
indoor unit may not exceed the maximum
allowable pipe length.
o
√
If possible, D O NOT install the unit whe r e it
o
√ Place the outdoor unit as close to the indoor
unit as possible.
o
√ Ensu
r e that the r e is enough r oom for
installation and maintenance.
o
√ The
air inlet and outlet must not be
obstructed or exposed to strong wind.
o
√ Ensu
r e the location of the unit will not be
subject to snowdrifts, accumulation of leaves
or other seasonal debris. If possible, provide
an awning for the unit. Ensure the awning
does not obstruct airflow.
o
√ The installation a
r ea must be dry and well
ventilated.
o
√ The
r e must be enough r oom to install the
connecting pipes and cables and to access
them for maintenance.
Strong wind
Strong wind
is exposed to direct sunlight.
o
√
If possible, make su r e the unit is located far
away from your neighbors’ property so that
the noise from the unit will not disturb them.
o
√
If the location is exposed to st r ong winds (for
example: near a seaside), the unit must be
placed against the wall to shelter it from the
wind. If necessary, use an awning.
(See Fig. 5.1 & 5.2)
o
√ Install the indoor and outdoor units, cables
and wires at least 1 meter from televisions or
radios to prevent static or image distortion.
Depending on the radio waves, a 1 meter
distance may not be enough to eliminate all
interference.
Strong wind
Fig. 5.1 Fig. 5.2
Step 2: Install outdoor unit.
Fix the outdoor unit with anchor bolts (M10)
>60cm / 23.6”
Fix with bolts
Fig. 5.3
Outdoor Unit Installation
• Be sure to remove any obstacles that
may block air circulation.
• Make sure you refer to Length
Specifications to ensure there is
enough room for installation and
maintenance.
5

15
Split Type Outdoor Unit
(Refer to Fig 5.4, 5.5, 5.6, 5.10 and Table 5.1)
H
Fig. 5.4
W
W
H
Fig. 5.5
A
D
B
Fig. 5.6
Table 5.1: Length Specifications of Split
Type Outdoor Unit (unit: mm/inch)
Outdoor Unit Dimensions Mounting Dimensions
W x H x D Distance A Distance B
760x590x285 (29.9x23.2x11.2)
530 (20.85)
290 (11.4)
810x558x310 (31.9x22x12.2)
549 (21.6)
325 (12.8)
845x700x320 (33.27x27.5x12.6)
560 (22)
335 (13.2)
900x860x315 (35.4x33.85x12.4)
590 (23.2)
333 (13.1)
945x810x395 (37.2x31.9x15.55)
640 (25.2)
405 (15.95)
990x965x345 (38.98x38x13.58)
624 (24.58)
366 (14.4)
938x1369x392 (36.93x53.9x15.43)
634 (24.96)
404 (15.9)
900x1170x350 (35.4x46x13.8)
590 (23.2)
378 (14.88)
800x554x333 (31.5x21.8x13.1)
514 (20.24)
340 (13.39)
845x702x363 (33.27x27.6x14.3)
540 (21.26)
350 (13.8)
946x810x420 (37.24x31.9x16.53)
673 (26.5)
403 (15.87)
946x810x410 (37.24x31.9x16.14)
673 (26.5)
403 (15.87)
952x1333x410 (37.5x52.5x16.14)
634 (24.96)
404 (15.9)
952x1333x415 (37.5x52.5x16.34)
634 (24.96)
404 (15.9)

16
A
150%cm%/%59”%
or%more
2. Insert the drain joint into the hole in the base
pan of the unit.
3. Rotate the drain joint 90° until it clicks in place
facing the front of the unit.
4. Connect a drain hose extension (not included)
to the drain joint to redirect water from the
unit during heating mode.
If the drain joint doesn’t come with a rubber
seal (see Fig. 5.12 - B), do the following:
Insert the drain joint into the hole in the base
pan of the unit. The drain joint will click in
place.
Connect a drain hose extension (not included)
to the drain joint to redirect water from the
unit during heating mode.
Fig. 5.9
Rows of series installation
Table 5.3 The relations between H, A and L
are as follows.
Seal
Drain joint
Seal
H Fig. 5.10
(A) (B)
Fig. 5.11
L Notes On Drilling Hole In Wall
You must drill a hole in the wall for the
refrigerant piping, and the signal cable that will
connect the indoor and outdoor units.
1. Determine the location of the wall hole
based on the location of the outdoor unit.
2. Using a 65-mm (2.5”) core drill, drill a hole
in the wall.
Drain Joint Installation
If the drain joint comes with a rubber seal
(see Fig. 5.12 - A), do the following:
1. Fit the rubber seal on the end of the drain joint
that will connect to the outdoor unit.
NOTE: When drilling the wall hole, make
sure to avoid wires, plumbing, and other
sensitive components.
3. Place the protective wall cuff in the hole.
This protects the edges of the hole and will
help seal it when you finish the installation
process.
Base pan hole of
outdoor unit
NOTE: Make sure the water drains to a safe
location where it will not cause water damage
or a slipping hazard.
NOTE: The minimum distance between the
outdoor unit and walls described in the
installation guide does not apply to airtight
rooms. Be sure to keep the unit unobstructed
in at least two of the three directions (M, N, P)
(See Fig. 5.10)
60%cm%/%
23.6”%on%
right
30%cm%/%
11.8”%on%
left
25%cm%/%9.8”%
25%cm%/%9.8”
o
r%
m
o
r
e
o
r%
m
o
r
e
60
c
m
/
23
.
6
”
a
b
o
v
e
30%cm%/%11.8”%
from%back%
wall
300%cm%/%
118”%or%
more
60%
cm%
/%
23.
6”
o
r%
m
o
r
e
200%cm%
/%78”%in%
front
L
A
L ≤ H
L ≤ 1/2H
25 cm / 9.8” or more
1/2H < L ≤ H
30 cm / 11.8” or more
L > H
Can not be installed

17
into the unit and flood.
• To prevent air bubbles, keep the drain hose
level or slightly tiled up (<75mm / 3”).
The drainpipe is used to drain water away from
the unit. Improper installation may cause unit
and property damage.
Drainpipe installation for units with a pump
Ceiling
Indoor Drainpipe Installation
Install the drainpipe as illustrated in Figure 6.2.
<20cm
(7.9”) Lean over 1/50
1.
Cover the drainpipe with heat insulation to
prevent condensation and leakage.
2. Attach the mouth of the drain hose to the
unit’s outlet pipe. Sheath the mouth of the
hose and clip it firmly with a pipe clasp.
(Fig 6.1)
Drain hose
0 - 75mm
(3”)
Fig. 6.3
Drainpipe
connecting port Pipe clasp Insulation
Fig. 6.1
Ceiling
0-53cm
(20.8”)
Fig. 6.2
1-1 5m
(39-59”)
Lean over 1/50
≥10cm
(4”)
Fig. 6.4
Drainpipe Installation
CAUTION
•
Insulate all piping to prevent condensation,
which could lead to water damage.
•
If the drainpipe is bent or installed
incorrectly, water may leak and cause a
water-level switch malfunction.
•
In HEAT mode, the outdoor unit will
discharge water. Ensure that the drain hose
is placed in an appropriate area to avoid
water damage and slippage.
•
DO NOT pull the drainpipe forcefully. This
could disconnect it.
•
•
•
•
When using an extended drainpipe, tighten
the indoor connection with an additional
protection tube. This prevents it from
pulling loose.
The drainpipe should slope downward at a
gradient of at least 1/100 to prevent water
from flowing back into the air conditioner. To
prevent the pipe from sagging, space
hanging wires every 1-1.5m (39-59”).
If the outlet of the drainpipe is higher than
the body’s pump joint, use a lift pipe for the
indoor unit’s exhaust outlet. The lift pipe
must be installed no higher than 55cm
(21.7”) from the ceiling board. The
distance between the unit and the lift pipe
must be less than 20cm (7.9”). Incorrect
installation could cause water to flow back
NOTE: When connecting multiple drainpipes,
install the pipes as illustrated in Fig 6.4.
NOTE ON PURCHASING PIPES
NOTE ON DRAINPIPE INSTALLATION
This installation requires a polyethylene tube
(outside diameter = 3.7-3.9cm, inside diameter
= 3.2cm), which can be obtained at your local
hardware store or dealer.
1-1 5m
(39-59”)
<
5
5
c
m
(
2
1
.
7
”
)
6

18
3. Using a 65-mm (2.5”) core drill, drill a hole in
the wall. Make sure that the hole is drilled at
a slight downward angle, so that the outdoor
end of the hole is lower than the indoor end
by about 12mm (0.5”). This will ensure proper
water drainage (See Fig. 6.5). Place the
protective wall cuff in the hole. This protects
the edges of the hole and will help seal it once
you finish installation.
Wall
Units with a pump.
1. Remove the test cover.
Fill the water pan with 2 liters of water.
Outdoor Indoor
Fig. 6.5
4. Pass the drain hose through the wall hole.
Make sure the water drains to a safe location
where it will not cause water damage or a
slipping hazard.
NOTE: The drainpipe outlet should be at least
5cm (1.9”) above the ground. If it touches the
ground, the unit may become blocked and
malfunction. If you discharge the water directly
into a sewer, make sure that the drain has a U
or S pipe to catch odors that might otherwise
come back into the house.
Drainage test
Check whether the drainpipe is unhindered.
Test cap Fig.6.7
Fig.6.8
This test should be performed on newly built
houses before the ceiling is paved.
Units without a pump.
Fig.6.6
Fill the water pan with 2 liters of water.
Check that the drainpipe is unhindered.
2. Turn on the unit in COOLING mode. You will
hear the drain pump. Check whether the
water is discharged properly (a 1-minute lag
is possible, depending on the length of the
drain pipe), Check whether water leaks from
the joints.
3. Turn off the air conditioner and put the
cap back on.
NOTE: When drilling the hole, make sure to
avoid wires, plumbing, and other sensitive
components.
E
S
N E
D
O
P
E
N
C
L
O
S
E
D
C
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19
Safety Precautions Notes On Pipe Length and Elevation
Ensure that the length of the refrigerant pipe, the
number of bends, and the drop height between
the indoor and outdoor units meets the
requirements shown in Table 7.1:
Table 7.1: The Maximum Length And Drop
Height Based on Models. (Unit: m/ft.)
Type of model Capacity Length of Maximum drop
(Btu/h) piping height
North America,
Australia and the
eu frequency
conversion Split
Type
<15K
25/82
10/32.8
³15K - <24K
30/98.4
20/65.6
³24K - <36K
50/164
25/82
³36K - £60K
65/213
30/98.4
Other Split Type
12K
15/49
8/26
18K-24K
25/82
15/49
30K-36K
30/98.4
20/65.6
42K-60K
50/164
30/98.4
Refrigerant Piping with Twin Indoor Units
When installing multiple indoor units with a single outdoor unit, ensure that the length of the
refrigerant pipe and the drop height between the indoor and outdoor units meet the requirements
illustrated in the following diagram:
Outdoor unit
L1
L
H2
The line branch pipe L2
Indoor unit
H1
Indoor unit
Fig. 7.1
Refrigerant Piping Connection
WARNING
The drop height
between indoor
unit
and outdoor unit
must be less
than or equal to
20m (65.6’)
The drop height
between two
indoor units
must be less
than or equal to
50cm (19.6”)
• All field piping must be completed by a
licensed technician and must comply with
the local and national regulations.
• When the air conditioner is installed in a
small room, measures must be taken to
prevent the refrigerant concentration in
the room from exceeding the safety limit
in the event of refrigerant leakage. If the
refrigerant leaks and its concentration
exceeds its proper limit, hazards due to
lack of oxygen may result.
• When installing the refrigeration system,
ensure that air, dust, moisture or foreign
substances do not enter the refrigerant
circuit. Contamination in the system may
cause poor operating capacity, high
pressure in the refrigeration cycle,
explosion or injury.
• Ventilate the area immediately if there is
refrigerant leakage during the installation.
Leaked refrigerant gas is both toxic and
flammable. Ensure there is no refrigerant
leakage after completing the installation
work.
7

20
Table 7.2
Permitted length
Piping
length
Total piping length
18K+18K
30/98’
L+Max
(L1, L2)
24K+24K
30K+30K
50/164’
(farthest distance from
the line pipe branch)
15/49’
L1, L2
(farthest distance from
the line pipe branch)
10/32.8’
L1-L2
Drop
height
Drop height between
indoor and outdoor unit
20/65.6’
H1
Drop height between
two indoor units
0.5/1.6’
H2
Size of joint pipes for indoor unit
Table 7.3 Size of joint pipes for 410A and R32
indoor unit
Capacity
of indoor
unit (A)
Size of main pipe(mm)
Gas side
Liquid side
Available
branching pipe
18K
Φ12.7(0.5”)
Φ6.35(0.25”)
KCMI-112
24K
Φ15.9(0.626”)
Φ9.5(0.375”)
KCMI-112
30K
Φ15.9(0.626”)
Φ9.5(0.375”)
KCMI-112
Size of joint pipes for outdoor unit
Base on the following tables, select the diameters
of the outdoor unit connective pipes. In case of the
main accessory pipe large than the main pipe, take
the large one for the selection.
Table 7.4 Size of joint pipes for 410A and R32
outdoor unit
Model
the size of main pipe(mm)
Gas side
Liquid side
The 1st branching pipe
36K
Φ15.9(0.626”)
Φ9.5(0.375”)
KCMI-112
48K
Φ15.9(0.626”)
Φ9.5(0.375”)
KCMI-112
60K
Φ15.9(0.626”)
Φ9.5(0.375”)
KCMI-112
Refrigerant Piping Connection Instructions
1. Make sure that the pipe is cut at a perfect
90° angle. Refer to Fig. 7.4 for examples
of bad cuts
Oblique Rough Warped
Fig. 7.4
Step2: Remove burrs.
Burrs can affect the air-tight seal of refrigerant
piping connection. They must be completely
removed.
1. Hold the pipe at a downward angle to
prevent burrs from falling into the pipe.
2. Using a reamer or deburring tool, remove
all burrs from the cut section of the pipe.
Pipe
Reamer
Point down
Fig. 7.5
Step 3: Flare pipe ends
Proper flaring is essential to achieve an airtight seal.
1. After removing burrs from cut pipe, seal
the ends with PVC tape to prevent foreign
materials from entering the pipe.
2. Sheath the pipe with insulating material.
3. Place flare nuts on both ends of pipe. Make
sure they are facing in the right direction,
because you can’t put them on or change
their direction after flaring. See Fig. 7.6
Step1: Cut pipes
When preparing refrigerant pipes, take extra
care to cut and flare them properly. This will
ensure efficient operation and minimize the
need for future maintenance.
1. Measure the distance between the indoor
Copper pipe
Fig. 7.6
and outdoor units.
2. Using a pipe cutter, cut the pipe a little
longer than the measured distance.
4. Remove PVC tape from ends of pipe when
ready to perform flaring work.
CAUTION
CAUTION
DO NOT deform pipe while cutting. Be extra
careful not to damage, dent, or deform the pipe
while cutting. This will drastically reduce the
heating efficiency of the unit.
90°
Flare nut
• The branching pipe must be installed horizontally.
An angle of more than 10° may cause malfunction.
• DO NOT install the connecting pipe until both
indoor and outdoor units have been installed.
• Insulate both the gas and liquid piping to
prevent water leakage.