Installation Manual of Room Air Conditioner
Read this manual before installation
Explain sufficiently the operating means to the user
according to this manual.
Necessary Tools for Installation
1.Driver
2.Hacksaw
3.Hole core drill
4.Hexagon wrench (5mm)
Accessory parts
No.
Accessory parts
Remote controller
R-03 dry battery
Mounting plate
Drain hose
4X25
Screw
Plastic cap
Cushion
Drain-elbow
5.Spanner(14,17,19 and 24 mm)
6.Torque wrench(17mm,22mm,24mm)
7.Pipe cutter
8.Flaring tool
Drawing for the installation of indoor and outdoor units
Number
of
articles
Optional parts for piping
Mark
Parts name
Non-adhesive tape
Adhesive tape
Saddle(L.S) with screws
Connecting electric cable
for indoor and outdoor
Drain hose
Heating insulating material
Piping hole cover
more than 10cm
9.Knife
12.Measuring tape
10.Nipper 13.Reamer
11.Gas leakage detector or
14.Refrigerant oil
soap-and-water solution
more than 5cm
Attention must be paid to
the rising up of drain hose
more than 10cm
NO.0010510475
Arrangement of piping directions
Rear left
Below
Rear
right
Right
Left
more than 10cm
more than 10cm
more than 15cm
more than 60cm
The marks from to in the figure are the parts numbers.
A G
The distance between the indoor unit and the floor should be
more than 2m.
113.5 583 113.5
Floor fixing dimensions
of the outdoor unit
(Unit:mm)
319.5
140
500 140
Floor fixing dimensions
of the outdoor unit
(Unit:mm)
58
256
578
180
Floor fixing dimensions
of the outdoor unit
(Unit:mm)
3
180
HSU-22HC03/R2(DB)
Fixing of outdoor unit
HSU-18HC03/R2(DB)
Fix the unit to concrete or block with bolts( 10mm) and nuts firmly and horizontally.
When fitting the unit to wall surface, roof or rooftop, fix a supporter surely with nails
or wires in consideration of earthquake and strong wind.
If vibration may affect the house, fix the unit by attaching a vibration-proof mat.
Indoor Unit
Place, robust not causing vibration, where the body can be supported
sufficiently.
Place, not affected by heat or steam generated in the vicinity, where
inlet and outlet of the unit are not disturbed.
Place, possible to drain easily, where piping can be connected with the
outdoor unit.
Place, where cold air can be spread in a room entirely.
Place, nearby a power receptacle, with enough space around. (Refer
to drawings).
Place where the distance of more than lm from televisions, radios,
wireless apparatuses and fluorescent lamps can be left.
In the case of fixing the remote controller on a wall, place where the
indoor unit can receive signals when the fluorescent lamps in the room
are lightened.
Selection of Installation Place
HSU-12HC03/R2(DB)
HSU-09HC03/R2(DB)
HSU-26H03/R2(DB)
Outdoor Unit
Place, which is less affected by rain or direct sunlight and is
sufficiently ventilated.
Place, possible to bear the unit, where vibration and noise are
not increased.
Place, where discharged wind and noise do not cause a
nuisance to the neighbors.
Place, where a distance marked is available as illustrated
in the above figure.
Power Source
Before inserting power plug into receptacle, check the voltage without fail. The power source is the same as the corresponding name plate.
Install an exclusive branch circuit of the power.
A receptacle shall be set up in a distance where the power cable can be reached. Do not extend the cable by cutting it.
Selection of pipe
To this unit, both liquid and gas pipes shall be insulated
as they become Iow temperature in operation.
Use optional parts for piping set or pipes covered with
equivalent insulation material.
The thickness of the pipe must be 0.8mm at least.
Liquid pipe
Gas pipe
2
For 09 12
6.35mm(1/4")
For 18 22
6.35mm(1/4")
12.7mm(1/2")
For 26
9.52mm(3/8")
15.88mm(5/8")9.52mm(3/8")
Indoor unit
1.Fitting of the Mounting Plate and Positioning of the wall Hole
When the mounting plate is first fixed
1.Carry out, based on the neighboring pillars or lintels, a proper leveling for the plate to be
fixed against the wall, then temporarily fasten the plate with one steel nail.
2. Make sure once more the proper level of the plate, by hanging a thread with a weight from
the central top of the plate, then fasten securely the plate with the attachment steel nail.
3. Find the wall hole location Amm using a measuring tape
Weight
Thread
Holes for fixing the mounting plate
Fit the level line
150mm
HSU-09HC03/R2(DB)
HSU-12HC03/R2(DB)
HSU-18HC03/R2(DB)
HSU-22HC03/R2(DB)
HSU-26H03/R2(DB)
Amm
145
150
70mm
Bmm
60
70
When the mounting plate is fixed side bar and lintel
Fix to side bar and lintel a mounting bar, Which is separately sold, and then fasten
the plate to the fixed mounting bar.
Refer to the previous article, " When the mounting plate is first fixed ", for the
position of wall hole.
2.Making a Hole on the Wall and Fitting the Piping Hole Cover
Make a hole of Bmm in diameter,
slightly descending to outside the wall.
Install piping hole cover and seal it
off with putty after installation
Indoor side
Wall hole
Bmm
(Section of wall hole)
3
Outdoor side
Thickness
of wall
Piping hole pipe
Indoor unit
3.Installation of the Indoor Unit
Drawing of pipe
Rear piping
Draw pipes and the drain hose, then fasten them with the adhesive tape
Left Left-rear piping
In case of left side piping, cut away, with a nipper, the lid for left piping.
In case of left-rear piping, bend the pipes according to the piping direction to the mark of hole for left-rear
piping which is marked on heat insulation materials.
1. Insert the drain hose into the dent of heat insulation materials of indoor unit.
2. Insert the indoor/outdoor electric cable from backside of indoor unit, and pull it out on the front side, then
connect them.
3. Coat the flaring seal face with refrigerant oil and connect pipes.
Cover the connection part with heat insulation materials closely, and make sure fixing with adhesive tape
Heat insulation
material
Drain hose
Lid for right piping
Lid for under piping pipe
Fix with adhesive tape
Indoor/outdoor electric cable and drain hose must be bound with refrigerant piping by protecting tape.
Lid for left piping
Indoor/outdoor
electric cable
Piping
Other direction piping
Cut away, with a nipper, the lid for piping according to the piping direction and then bend the pipe according
to the position of wall hole. When bending, be careful not to crash pipes.
Connect beforehand the indoor/outdoor electric cable, and then pull out the connected to the heat insulation
of connecting part specially.
Fixing the indoor unit body
Hang surely the unit body onto the upper notches of the
mounting plate. Move the body from side to side to verify
its secure fixing.
In order to fix the body onto the mounting plate,hold up
the body aslant from the underside and then put it down
perpendicularly.
4.Connecting the indoor/outdoor Electric Cable
Removing the wiring cover
Remove terminal cover at right bottom corner of indoor
unit, then take off wiring cover by removing its screws.
4
Indoor unit
When connecting the cable after installing the indoor unit
1. Insert from outside the room cable into left side of the wall hole, in which
the pipe has already existed.
2. Pull out the cable on the front side, and connect the cable making a loop.
Insert the cable from the back side of the unit, then pull it out on the front side.
Loosen the screws and insert the cable ends fully into terminal block, then tighten the screws.
Pull the cable slightly to make sure the cables have been properly inserted and tightened.
After the cable connection, never fail to fasten the connected cable with the wiring cover.
Note: When connecting the cable, confirm the terminal number of indoor and outdoor units carefully. If wiring
is not correct, proper operation can not be carried out and will cause defect.
1. If the supply cord is damaged, it must be replaced by the manufacturer or its service agent or a similar
qualified person. The type of connecting wire is H05RN-F or H07RN-F.
2. If the fuse on PC board is broken please change it with the type of T. 3.15A/250V.
3. The wiring method should be in line with the local wiring standard.
4. After installation, the power plug should be easily reached.
5. A breaker should be incorporated into fixed wiring. The breaker should be all-pole switch and the
distance between its two contacts should be not less than 3mm.
Indoor unit Outdoor unit
4
Power cable: 3G1.5mm
Connecting wiring:
HSU-09HC03/R2(DB)
2
4G1.5mm
Outdoor unit
2
{
L N
Indoor unit
Power cable: 3G1.5mm
Connecting wiring:
HSU-12HC03/R2(DB)
2
4G1.5mm
{
Indoor unit
Outdoor unit
Connecting wiring:
HSU-18HC03/R2(DB)
1
4 5
3
2
1
2
Connecting wiring:
HSU-22HC03/R2(DB)
4 5
3
2
1
Connecting wiring:
2
3
L N
1
2
3
2 1
HSU-26H03/R2(DB)
5
Outdoor unit
1.Installation of Outdoor Unit
Install according to
Drawing for the installation of indoor and outdoor units
2.Connection of pipes
Apply refrigerant oil on half union and flare nut.
To bend a pipe, give the roundness as large as possible not to crush the pipe
Connecting the pipe of gas side first makes working easier.
Half union
Spanner
Be careful that matters, such as wastes of sands, etc. shall not enter the pipe.
The standard pipe length is 5m. If it is over 5m, the function of the unit will be affected. If the pipe has
to be lengthened, the refrigerant should be charged, according to 20 g/m. But the charge of refrigerant
must be conducted by professional air conditioner engineer. Before adding additional refrigerant,
perform air purging from the refrigerant pipes and indoor unit using a vacuum pump,then charge
additional refrigerant.
Flare nut
Torque wrench
Forced fastening without careful
centering may damage the
threads and cause a leakage of gas.
Pipe Diameter
Liquid side 6.35mm(1/4")
Liquid side 9.52mm(3/8")
Gas side 12.7mm(1/2")
Gas side 15.88mm(5/8") 60 N.m
Fastening torque
18N.m
42 N.m
55N.m
3.Connection
Use the same method on indoor unit. Loosen
the screws on terminal block and insert the
plugs fully into terminal block, then tighten the
screws.
Insert the cable according to terminal number
in the same manner as the indoor unit.
4.Attaching Drain-Elbow
If the drain-elbow is used, please attach it as
figure.
Note: Only for heat pump unit.
If wiring is not correct, proper operation can
not be carried out and controller may be
damaged.
Fix the cable with a clamp.
Drain hose
6
Outdoor unit
6.Purging Method:To use vacuum pump
1
Detach the service port's cap of 3-way valve , the
valve rod's cap for 2-way valve and 3-way's, connect
the service port into the projection of charge hose
(Iow) for gaugemanifold. Then connect the projection
of charge hose (center) for gaugemanifold into
vacuum pump.
2
Open the handle at Iow in gaugemanifold, operate
vacuum pump. If the scale-moves of gause (Iow)
reach vacuum condition in a moment, check again.
3
Vacuumize for over 15min. And check the level gauge
which should read -0.1 MPa (-76 cm Hg) at Iow
pressure side. After the completion of vacuumizing,
close the handle 'Lo' in gaugemanifold and stop the
operation of the vacuum pump.
Check the condition of the scale and hold it for 1-2min.
If the scale-moves back in spite of tightening, make
flaring work again, the return to the beginning of .
4
Open the valve rod for the 2-way valve to an angle of
anticlockwise 90 degrees.
After 6 seconds, close the 2-way valve and make the
inspection of gas leakage.
1
3
Tube(for R410A)
Open
Close
Open
90
O
2-way valve
6.35mm(1/4")
Liquid Side
3-way valve
12.7mm(1/2")
Gas Side
Gaugemanifold(for R410A)
Vacuum pump(for R410A)
2-way valve
3-way valve
Anti countercurrent joint
5
No gas leakage?
6
Detach the charge hose from the service port, open
2-way valve and 3-way valve . Turn the valve rod
anticlockwise until hitting lightly.
7
To prevent the gas leakage, turn the service port's
cap, the valve rod's cap for 2-way valve and 3-way's
a little more than the point where the torque increases
suddenly.
8
After attaching the each caps, check the gas leakage
around the caps.
CAUTION:
1.If the refrigerant of the air conditioner leaks, it is necessary to
discharge all the refrigerant. Vacuumize first, then charge the liquid
refrigerant into air conditioner according to the amount marked on
the name plate.
In case of gas leakage, tighten
parts of pipe connection. If
leakage stops, then proceed
steps.
6
If it does not stop gas leakage,
discharge
whole refrigerants from the service port.
After flaring work again and vacuumize,
fill up prescribed refrigerant from the gas
cylinder.
7
Service port cap
2.Please do not let other cooling medium, except specified one (R410A),
or air enter into the cooling circulation system. Otherwise, there will be
abnormal high pressure in the system to make it crack and lead to
personal injuries.
2-way valve
3-way valve
2-way valve
3-way valve
7
7
Valve rod cap
Valve rod cap
HSU-22HC03/R2(DB)
HSU-18HC03/R2(DB)
Liquid Side
2-way valve
HSU-26H03/R2(DB)
HSU-09HC03/R2(DB)
HSU-12HC03/R2(DB)
2-way valve
3-way valve
Gas Side
3-way valve
7
1.Power Source Installation
The power source must be exclusively used for air conditioner. (Over I0A)
In the case of installing an air conditioner in a moist place, please install an
earth leakage breaker.
For installation in other places, use a circuit breaker as far as possible.
2.Cutting and Flaring Work of Piping
Pipe cutting is carried out with a pipe cutter and burs must be removed.
After inserting the flare nut, flaring work is carried out.
Liquid side
Liquid side
Flare tooling die
Gas side
Gas side
Correct Incorrect
Pipe diameter
6.35mm(1/4")
9.52mm(3/8")
12.7mm(1/2")
15.88mm(5/8")
Size A (mm)
0.8~1.5
1.0~1.8
1.2~2.0
1.4~2.2
Lean Damage of flare Crack Partial Too outside
3.On Drainage
Please install the drain hose so as to be downward slope without fail.
Please don't do the drainage as shown below.
Less than 5cm
It becomes high midway.
The end is immersed
in water.
It waves. The gap with the ground
is too small
There is the bad smell
from a ditch
Please pour water in the drain pan of the indoor unit, and confirm that drainage is
carried out surely to outdoor.
In case that the attached drain hose is in a room, please apply heat insulation
to it without fail.
Check for Installation and Test Run
Please kindly explain to our customers how to operate through the instruction manual.
Check Items for Test Run
Gas leak from pipe connecting?
Are the connecting wirings of
indoor and outdoor firmly inserted
to the terminal block?
Is the connecting wiring of indoor
and outdoor firmly fixed?
Put check mark in boxes
Is drainage securely carried out?
Is the earth line securely
connected?
Is the indoor unit securely fixed?
Is power source voltage abided
by the code?
Is there any noise?
Is the lamp normally lighting?
Are cooling and heating (when
in heat pump) performed normally?
Is the operation of room temperature
regulator normal?
8
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