aircon ASKCI4H4R18 User manual

Air Conditioners
Installation Manual
DC Inverter U-match Series
Floor Ceiling Type Unit
Thank you for choosing these Air Conditioners, please read this owner’s manual carefully
before operation and retain it for future reference.
Models:
Indoor Unit Outdoor Unit
ASKEL4H4R18 ASKCI4H4R18
ASKEL4H4R24 ASKCI4H4R24
ASKEL4H4R36 ASKCI4H4R36
ASKEL4H4R48 ASKCI4H4R48

1 Safety Precautions ..........................................................................................1
2 Outline of the Unit and Main Parts...................................................................2
3 Preparative for Installation...............................................................................3
3.1 Standard Accessory Parts..........................................................................3
3.2 Selection of the Installation Location..........................................................4
3.3 Connection Pipe Requirement ...................................................................6
3.4 Electrical Requirement...............................................................................6
4 Installation of the Unit......................................................................................8
4.1 Installation of the Indoor Unit......................................................................8
4.2 Installation of the Outdoor Unit.................................................................10
4.3 Installation of the Connection Pipe...........................................................12
4.4 Vacuum and Gas Leakage Inspection......................................................15
4.5 Installation of the Drain Pipe ....................................................................17
4.6 Electrical Wiring........................................................................................19
5 Installation of Controllers...............................................................................23
6 Test Running..................................................................................................23
6.1 Trial Operation and Testing.......................................................................23
6.2 Working Temperature Range....................................................................25
7. Troubleshooting and Maintenance ...............................................................25
7.1 Troubleshooting........................................................................................25
7.2 Routine Maintenance ...............................................................................26
Contents

DC Inverter U-match Series Floor Ceiling Type Unit
1
1 Safety Precautions
WARNING! This mark indicates procedures which, if improperly performed, might lead to the
death or serious injury of the user.
CAUTION! This mark indicates procedures which, if improperly performed, might possibly result
in personal harm to the user, or damage to property.
WARNING!
(1). For operating the air conditioner pleasantly, install it as outlined in this installation manual.
(2). Connect the indoor unit and outdoor unit with the room air conditioner piping and cord available from
our standard parts. This installation manual describes the correct connections using the installation
set available from our standard parts.
(3). Installation work must be performed in accordance with national wiring standards by authorized
personnel only.
(4). If refrigerant leaks while work is being carried out, ventilate the area. If the refrigerant comes in
contact with a ame, it produces toxic gas.
(5). Do not power on until all installation work is complete.
(6). During installation, make sure that the refrigerant pipe is attached firmly before you run the
compressor.
Do not operate the compressor under the condition of refrigerant piping not attached properly with
2-way or 3-way valve open.
This may cause abnormal pressure in the refrigeration cycle that leads to breakage and even injury.
(7). During the pump-down operation, make sure that the compressor is turned off before you remove
the refrigerant piping.
Do not remove the connection pipe while the compressor is in operation with 2-way or 3-way valve
open.
This may cause abnormal pressure in the refrigerant cycle that leads to breakage and even injury.
(8). When installing and relocating the air conditioner, do not mix gases other than the specified
refrigerant (R410A) to enter the refrigerant cycle.
If air or other gas enters the refrigerant cycle, the pressure inside the cycle will rise to an abnormally
high value and cause breakage, injury, etc.
(9). 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.
(10). Children should be supervised to ensure that they do not play with the appliance.
(11). If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or
similarly qualied persons in order to avoid a hazard.

DC Inverter U-match Series Floor Ceiling Type Unit
2
2 Outline of the Unit and Main Parts
Indoor
Outdoor
1. Guide louver
2. Air lter
3. Wired controller
4. Wireless Controller
5. Binding tape
6. Drain Pipe
7. Gas Pipe
8. Lipuid Pipe
9. Big Handle
10. Front Board
3 4
5
679 810
1 2
Air inlet
Air outlet
Fig.2.1
Notes:
① .
The connection pipe and duct for this unit should be prepared by the user.
② .
This unit is standard equipped with the rectangular duct.

DC Inverter U-match Series Floor Ceiling Type Unit
3
3 Preparative for Installation
3.1 Standard Accessory Parts
The standard accessory parts listed below are furnished and should be used as required.
Table 3.1
Indoor Unit Accessories
No. Name Appearance Q'ty Usage
1 Nut with Washer 8To x the hook on the cabinet
of the unit.
2Wireless
Controller+Battery 1+2 To control the indoor unit
3 Insulation 1 To insulate the gas pipe
4 Insulation 1 To insulate the liquid pipe
5 Installation Paperboard 2 To insulate the drain pipe
6 Fastener 4 To fasten the sponge
7 Nut 1 To connect gas pipe
8 Nut 1 To connect liquid pipe
Table 3.2
Outdoor Unit Accessories
No. Name Appearance Q'ty Usage
1 Drain Plug 3 To plug the unused drain hole.
2 Drainage Connecter or 1 To connect with the hard PVC
drain pipe

DC Inverter U-match Series Floor Ceiling Type Unit
4
3.2 Selection of the Installation Location
WARNING!
The unit must be installed where strong enough to withstand the weight of the unit and xed securely,
otherwise the unit would topple or fall off.
CAUTION!
① .
Do not install where there is a danger of combustible gas leakage.
② .
Do not install the unit near heat source, steam, or ammable gas.
③ .
Children under 10 years old must be supervised not to operate the unit.
Decide the installation location with the customer as follows:
3.2.1 Indoor Unit
(1). Install the unit at a place where is strong enough to withstand the weight of the unit.
(2). The air inlet and outlet of the unit should never be clogged so that the airow can reach
every corner of the room.
(3). Leave service space around the unit as required in Fig.3.1.
◆Floor type Unit: mm
>600
>1000
>300
>600
>1500
◆Ceiling type Unit: mm
>300
>600
>600 >1500
>200>2300
Fig. 3.1
(4). Install the unit where the drain pipe can be easily installed.
(5). The space from the unit to the ceiling should be kept as much as possible so as for more
convenient service.

DC Inverter U-match Series Floor Ceiling Type Unit
5
3.2.2 Outdoor Unit
WARNING!
① .
Install the unit where it will not be tilted by more than 5°.
② .
During installation, if the outdoor unit has to be exposed to strong wind, it must be xed securely.
If possible, do not install the unit where it will be exposed to direct sunlight. (If necessary, install
a blind that does not interfere with the air ow.)
(1). Install the outdoor unit in a place where it will be free from being dirty or getting wet by rain
as much as possible.
(2). Install the outdoor unit where it is convenient to connect with the indoor unit.
(3). Install the outdoor unit where the condensate water can be drained out freely during
heating operation.
(4). Do not place animals and plants in the path of the warm air.
(5). Take the air conditioner weight into account and select a place where noise and vibration
are small.
(6). Install the outdoor unit where is capable of withstanding the weight of the unit and
generates as less noise and vibration as possible.
(7). Provide the space shown in Fig.3.2, so that the air ow is not blocked. Also for efcient
operation, leave three of four directions of peripheral constructions open. Units: mm
＞500
＞500 ＞500 ＞500
＞2000
＞2000
＞1000
Fig.3.2

DC Inverter U-match Series Floor Ceiling Type Unit
6
3.3 Connection Pipe Requirement
CAUTION!
The maximum length of the connection pipe is listed in the table below. Do not place the units between
which the distance exceeds the maximum length of the connection pipe.
Table 3.3
Size of Fitting
Pipe(Inch) Max.
Pipe
Length
(m)
Max. Height
Difference between
Indoor Unit and
Outdoor Unit (m)
Drainage
pipe(Outer
Diameter × wall
thickness) (mm)
Liquid Gas
1/4 1/2 20 15 φ17×1.75
3/8 5/8 30 15 φ17×1.75
3/8 5/8 30 15 φ17×1.75
3/8 5/8 50 30 φ17×1.75
(1). The connecting pipe should be thermally insulated properly.
(2). The pipe wall thickness shall be 0.5-1.0mm and the pipe wall shall be able to withstand the
pressure of 6.0 MPa. The longer the connecting pipe, the lower the cooling and heating
effect performs.
(3). The pipe wall thickness shall be 0.5-1.0mm and the pipe wall shall be able to withstand the
pressure of 6.0 MPa. The longer the connecting pipe, the lower the cooling and heating
effect performs.
3.4 Electrical Requirement
Electric Wire Size and Fuse Capacity. Table 3.4
Indoor Units Power Supply Fuse Capacity Breaker Capacity Min. Power Supply Cord
V/Ph/Hz A A mm2
18K~48K 220-240V~ 60Hz 5 6 1.0
Table 3.5
Model Power
Supply Capability of Air Switch(A) Minimum Sectional Area of Power
Cable and Earth line (mm2)
ASKCI4H4R18
220-240V~
60Hz
16 1.5
ASKCI4H4R24 20 2.5
ASKCI4H4R36 25 2.5
ASKCI4H4R48 40 6.0
Notes:
① .
The fuse is located on the main board.
② .
Install the disconnect device with a contact gap of at least 3mm in all poles nearby the units
(Both indoor unit and outdoor unit).The appliance must be positioned so that the plug is
Item
Model
ASKEL4H4R18 ASKCI4H4R18
ASKEL4H4R24 ASKCI4H4R24
ASKEL4H4R36 ASKCI4H4R36
ASKEL4H4R48 ASKCI4H4R48

DC Inverter U-match Series Floor Ceiling Type Unit
7
accessible.
③ .
The specications of the breaker and power cable listed in the table above are determined
based on the maximum power (maximum amps) of the unit.
④ .
The specifications of the power cable listed in the table above are applied to the conduit-
guarded multi-wire copper cable (like, YJV copper cable, consisting of PE insulated wires and
a PVC cable jacket) used at 40°С and resistible to 90°С(see IEC 60364-5-52). If the working
condition changes, they should be modied according to the related national standard.
⑤ .
The specifications of the breaker listed in the table above are applied to the breaker with
the working temperature at 40°С. If the working condition changes, they should be modied
according to the related national standard.
⑥ .
Take 2 pieces of power cord of 0.75mm2as the communication lines between indoor and
outdoor unit, with their longest lengths of 50m. Please select the appropriate line length as per
the actual installation conditions. The communication lines can not be twisted together. For
the unit (≤30K), it’s recommended to use 8m long communication line.
⑦ .
Take 2 pieces of power cord of 0.75mm2as the communication lines between the wired
controller and the indoor unit, with their longest lengths of 30m. Please select the appropriate
line length as per the actual installation conditions. The communication lines can not be twisted
together. It’s recommended to use 8m long communication line.
⑧ .
The wire size of the communication line should be no less than 0.75mm2. It’s recommended to
take 0.75mm2power cords as the communication line.

DC Inverter U-match Series Floor Ceiling Type Unit
8
4 Installation of the Unit
4.1 Installation of the Indoor Unit
4.1.1 Indoor unit dimension
WARNING !
① .
Install the indoor unit in a location which can withstand a load of at least ve times the weight
of the main unit and which will not amplify sound or vibration.
② .
If the installation location is not strong enough, the indoor unit may fall and cause injuries.
③ .
If the job is done with the panel frame only, there is a risk that the unit will come loose. Please
take care.
Fig.4.1
Table 4.1
Model A B C D H
ASKEL4H4R18 1220 225 1158 280 700
ASKEL4H4R24
ASKEL4H4R36 1420 245 1354 280 700
ASKEL4H4R48 1700 245 1634 280 700
4.1.2 Preparation for Installing the Indoor Unit
(1). Open the air inlet grille and the screw cover, and remove the screws.
(2). Release the claws in the 3 places indicated.
(3). Release the center hook and remove the front panel.
(4). Release the claws in the 2 or 3 places indicated and remove the electric component cover.

DC Inverter U-match Series Floor Ceiling Type Unit
9
4.1.3 Indoor Unit Installation
(1). Determine the location of the hanger through the paper template, and then remove the
paper template.
Paper template
Anchor bolt
Fig.4.2
(2). Insert the anchor bolts into the drilled holes, and drive the pins completely into the anchor
bolts with a hammer.
(3). Remove the right and left side panels.
(4). Put the hanger bolt into the clasp of the indoor unit and tighten screws on the hanger to
prevent the indoor unit from moving.
(5). Reinstall and tighten the right and left side panels.
◆Floor type
Wall
Left side panel
Right side panel
Paper template
Fig.4.3

DC Inverter U-match Series Floor Ceiling Type Unit
10
◆Ceiling type
40
Ceiling
Suspension
bolt
Spring
washer
Nut
Nut
Hanger
Right side
panel
Left side panel
Fig.4.4
(6). Adjust the height of the unit to make the drain pipe slant slightly downward so that the
drainage will become much smoother.
4.1.4 Leveling
The water level test must be done after installing the indoor unit to make the unit is horizontal,
as shown below.
Horizontal tester
Fig.4.5
4.2 Installation of the Outdoor Unit
WARNING
① .
Install the unit where it will not be tilted by more than 5°.
② .
During installation, if the outdoor unit has to be exposed to strong wind, it must be xed securely.

DC Inverter U-match Series Floor Ceiling Type Unit
11
4.2.1 Outdoor unit dimension
D
A
B
C
E
Fig.4.6
Table 4.2 Unit: mm
Item
Model A B C D E
ASKCI4H4R18 955 396 700 560 360
ASKCI4H4R24 980 427 790 610 395
ASKCI4H4R36 1107 440 1100 631 400
ASKCI4H4R48 958 412 1349 572 376
4.2.2 Condensate Drainage of the Outdoor Unit(Only for the heat pump unit) (Fig.10)
(1). It is required to install a drain pipe for the outdoor unit to drain out the condensate water
during heating operation. (only for the heat pump unit)
(2). When installing the drain pipe, apart from the drain pipe mounting hole, all other holes
should be plugged so as to avoid water leakage.(only for the heat pump unit)
(3). Installation Method: Insert the pipe joint into the hole φ25 located at the base plate of the
unit and then connect the drain pipe to the pipe joint.
Bottom Drain cap
Drain pipe
mounting hole Fig.4.7

DC Inverter U-match Series Floor Ceiling Type Unit
12
4.3 Installation of the Connection Pipe
4.3.1 Flare Processing
(1). Cut the connection pipe with the pipe cutter and remove the burrs.
(2). Hold the pipe downward to prevent cuttings from entering the pipe.
(3). Remove the are nuts at the stop valve of the outdoor unit and inside the accessory bag of
the indoor unit, then insert them to the connection pipe, after that, are the connection pipe
with a aring tool.
(4). Check if the are part is spread evenly and there are no cracks (see Fig.11).
Fig.4.8
4.3.2 Bending Pipes
(1). The pipes are shaped by your hands. Be careful not to collapse them.
Fig.4.9
(2). Do not bend the pipes in an angle more than 90°.
(3). When pipes are repeatedly bent or stretched, the material
will harden, making it difcult to bend or stretch them any
more. Do not bend or stretch the pipes more than three
times.
(4). When bending the pipe, do not bend it as is. The pipe
will be collapsed. In this case, cut the heat insulating pipe with a sharp cutter as shown in
Fig.4.10, and bend it after exposing the pipe. After bending the pipe as you want, be sure
to put the heat insulating pipe back on the pipe, and secure it with tape.
Fig.4.10
Pipe
Cutter
Cutt line
Heat insulating
pipe
CAUTION!
① .
To prevent breaking of the pipe, avoid sharp bends. Bend the pipe with a radius of curvature of 150
mm or over.
② .
If the pipe is bent repeatedly at the same place, it will break.

DC Inverter U-match Series Floor Ceiling Type Unit
13
4.3.3 Connecting the Pipe at the Indoor Unit Side
Detach the caps and plugs from the pipes.
CAUTION!
① .
Be sure to apply the pipe against the port on the indoor unit correctly. If the centering is improper,
the flare nut cannot be tightened smoothly. If the flare nut is forced to turn, the threads will be
damaged.
② .
Do not remove the are nut until the connection pipe is to be connected so as to prevent dust and
impurities from coming into the pipe system.
When connecting the pipe to the unit or removing it from the unit, please do use both the
spanner and the torque wrench.(Fig.4.11)
When connecting, smear both inside and outside of the are nut with refrigeration oil, screw it
hand tight and then tighten it with the spanner.
Refer to Table 4.3 to check if the wrench has been tightened properly (too tight would mangle
the nut and lead to leakage).
Examine the connection pipe to see if it leaks, then take the treatment of heat insulation, as
shown in the Fig.4.12.
Use the medium-sized sponge to insulate the coupler of the gas pipe.
Fig.4.11
Fig.4.12

DC Inverter U-match Series Floor Ceiling Type Unit
14
Table 4.3 Flare nut tightening torque
Pipe Diameter Tightening Torque
1/4˝(Inch) 15-30 (N·m)
3/8˝(Inch) 35-40 (N·m)
5/8˝(Inch) 60-65 (N·m)
1/2˝(Inch) 45-50 (N·m)
3/4˝(Inch) 70-75 (N·m)
7/8˝(Inch) 80-85 (N·m)
CAUTION!
Be sure to connect the gas pipe after connecting the liquid pipe completely.
Fig.4.13
4.3.4 Connecting the Pipe at the Outdoor Side Unit
Tighten the are nut of the connection pipe at the outdoor unit valve
connector. The tightening method is the same as that as at the indoor
side.
4.3.5 Checking the Pipe Connections for Gas Leaking
For both indoor and outdoor unit side, check the joints for gas
leaking by the use of a gas leakage detector without fail when the pipes
are connected.
4.3.6 Heat Insulation on the Pipe Joints (Indoor Side Only)
Stick coupler heat insulation (large and small) to the place where connecting pipes.
Fig.4.14

DC Inverter U-match Series Floor Ceiling Type Unit
15
4.3.7Liquid Pipe and Drain Pipe
Sealed
Drain
pipe
Saddle
Fig.4.15
Fig.4.16
Trap
If the outdoor unit is installed lower than
the indoor unit (See Fig.4.15)
(1). A drain pipe should be above ground
and the end of the pipe does not
dip into water. All pipes must be
restrained to the wall by saddles.
(2). Taping pipes must be done from
bottom to top.
(3). All pipes are bound together by tape
and restrained to wall by saddles.
If the outdoor unit is installed higher than
the indoor unit
(1). Taping should be done from lower to
the upper part.
(2). All pipes are bound and taped
together and also should be trapped
to prevent water from returning to the
room (See Fig.4.16)
(3). Restraint all pipes to the wall with
saddles.
4.4 Vacuum and Gas Leakage Inspection
CAUTION!
Do not purge the air with refrigerants but use a vacuum pump to vacuum the installation! There is
no extra refrigerant in the outdoor unit for air purging!
4.4.1 Vacuum
(1). Remove the caps of the liquid valve, gas valve and also the service port.
(2). Connect the hose at the low pressure side of the manifold valve assembly to the service
port of the unit’s gas valve, and meanwhile the gas and liquid valves should be kept closed
in case of refrigerant leak.
(3). Connect the hose used for evacuation to the vacuum pump.
(4). Open the switch at the lower pressure side of the manifold valve assembly and start the
vacuum pump. Meanwhile, the switch at the high pressure side of the manifold valve

DC Inverter U-match Series Floor Ceiling Type Unit
16
assembly should be kept closed, otherwise evacuation would fail.
(5). The evacuation duration depends on the unit’s capacity, generally, 20 minutes for the
18K units, 30 minutes for the 24/36K units, 45 minutes for the 48K units, And verify if the
pressure gauge at the low pressure side of the manifold valve assembly reads -1.0Mp
(-75cmHg), if not, it indicates there is leak somewhere. Then, close the switch fully and
then stop the vacuum pump.
(6). Wait for some time to see if the system pressure can remain unchanged, 5 minutes for the
18/24K units, 10 minutes for the 36/48K units. During this time, the reading of the pressure
gauge at the low pressure side can not be larger than 0.005Mp (0.38cmHg).
(7). Slightly open the liquid valve and let some refrigerant go to the connection pipe to balance
the pressure inside and outside of the connection pipe, so that air will not come into the
connection pipe when removing the hose. Note that the gas and liquid valve can be opened
fully only after the manifold valve assembly is removed.
(8). Place back the caps of the liquid valve, gas valve and also the service port.
Hose with the valve pin
gauge manifold
pipe
pipe
VAC valve
Vacuum pump
Service port
Low pressure gauge
High pressure gauge
Gauge manifold kit
Fig.20
Note: For the large-sized unit, it has the service port for both the gas valve and the liquid valve.
During evacuation, it is available to connect two hoses of the manifold valve assembly to two
service ports to quicken the evacuating speed.
4.4.2 Additional Charge
18K~36K: Refrigerant suitable for a piping length of 5m is charged in the outdoor unit at the
factory. When the piping is longer than 7m, additional charging is necessary.
48K: Refrigerant suitable for a piping length of 7.5m is charged in the outdoor unit at the factory.
When the piping is longer than 10 m, additional charging is necessary.
For the additional amount, see Table 4.4.Table 4.4
Model
Item Additional Refrigerant Amount for Extra Pipe
18K 30 g/m
24~48K 60 g/m
When the height difference between the indoor unit and outdoor unit is larger than 10 meters,

DC Inverter U-match Series Floor Ceiling Type Unit
17
an oil bend should be employed for every 6 meters.
Oil bend
Oil bend
Indoor
Outdoor
6m
Fig.4.18
4.5 Installation of the Drain Pipe
4.5.1 Precautions When Doing the Piping Work
(1). Keep piping as short as possible and slope it downwards at a gradient of at least 1/100 so
that air may not remain trapped inside the pipe.
(2). Keep pipe size equal to or greater than that of the connecting pipe.
(3). Install the drain piping as shown and take measures against condensation. Improperly
rigged piping could lead to leaks and eventually wet furniture and belongings.
Extension drain piping
(commercially available)
Insulating tube
(commercially
available)
Indoor unit
drain hose
Insulating tape
(accessory)
Fig.4.19
(4) Connect the drain hose.(Fig.4.20)
Drain hose must
slope downward.
Allow no trap to
form in the piping
Do not allow end
of hose to touch
water
Fig.4.20