for room air conditioner
HSU-26HEK03/R2(DB)/I
HSU-35HEK03/R2(DB)/I
HSU-53HEK03/R2(DB)/I
HSU-71HEK03/R2(DB)/I
HSU-26HEK03/R2(DB)/O
HSU-35HEK03/R2(DB)/O
HSU-53HEK03/R2(DB)/O
HSU-71HEK03/R2(DB)/O
Read this manual before installation and keep it for future reference.
Please explain to the user how the product works and refer them to the operation manual.
NO.0010553937
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Preparation
Accessory parts
Remote controller (1)
AAA dry battery (2)
Mounting plate (1)
Drain hose (1)
Necessary tools for installation
Cushion (4)
Driver
Nibbler
Drain-elbow (1)
Pipe supporting plate (1)
Hacksaw
Plastic cap (4)
Ø4X25 Screw (4)
Hole core drill
Spanner (17,19 and 26mm)
Gas leakage detector or soap-and-water solution
Vacuum pump
Torque wrench (17mm, 22mm, 26mm)
Pipe cutter
Selection of pipe
Flaring tool
Model
Liquid pipe (Ø)
Gas pipe (Ø)
9.52mm (3/8")
9.52mm (3/8")
12.7mm (1/2")
15.88mm (5/8")
Knife
HSU-26HEK03/R2(DB)/O
HSU-35HEK03/R2(DB)/O
HSU-53HEK03/R2(DB)/O
HSU-71HEK03/R2(DB)/O
")
")
")
")
Measuring tape
Reamer
Refrigeration gauges
Power source
NOTE: The thickness of the pipe must be at least 0.8mm.
Install an exclusive circuit for the power.
Check the power source voltage is the same as the rating plate.
Power requirements
Selection of installation place
Indoor Unit
The place chosen to install the indoor unit should be:
Model
Max rated current
6.1
HSU-26HEK03/R2(DB)/O
HSU-35HEK03/R2(DB)/O
HSU-53HEK03/R2(DB)/O
HSU-71HEK03/R2(DB)/O
6.0
Not affected by heat or steam generated in the vicinity, where inlet and outlet
of the unit are not blocked or restricted.
10.5
13.8
Where it is possible to drain easily, and where piping can be connected
with the outdoor unit.
Where conditioned air can be evenly distributed through the whole room.
Where there is more than 1m distance from televisions, radios, wireless
are on.
Outdoor Unit
The place chosen to install the outdoor unit should be:
Strong enough to bear the unit, where vibration and noise are not increased.
Where discharged air and noise do not cause a nuisance to the neighbours.
Where a distance marked
3
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Drawing for the installation of indoor and outdoor units
Attention must be
paid to the rising up
Optional parts for piping
More than 5cm (26/35/53)
of drain hose
More than 10cm (71)
A
Non-adhesive tape
Adhesive tape
B
C
D
Saddle (L.S.) with screws
Connecting electric cable
for indoor and outdoor
G
Drain hose
More than 10cm
E
F
Heating insulating material
Piping hole cover
G
Arrangement of
piping directions
More than 10cm
the outdoor unit (Unit:mm)
F
Rear left
A
Rear
right
Left
Z
Right
C
X
Y
X
Below
More than 10cm (26/35/53)
More than 15cm (71)
Dimensions
More than 10cm (26/35/53)
More than 20cm (71)
Model
HSU-26HEK03/R2(DB)/O
x
y
z
140
140
500
500
256
256
HSU-35HEK03/R2(DB)/O
HSU-53HEK03/R2(DB)/O 113.5 583 319.5
HSU-71HEK03/R2(DB)/O 113.5 633
340
A
and
are supplied parts
G
D
Fixing of outdoor unit
Fix the unit to concrete or block with
pipe length is 2m.
E
horizontally.
earthquake or strong wind.
More than 60cm
More than 15cm (9/12/18)
More than 25cm (24)
unit by attaching
a vibration-proof mat.
The picture above is just for your reference. Please refer to the actual product purchased.
4
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Indoor Unit
1 Fitting of the Mounting Plate and Positioning of the Wall Hole
2 Making a Hole on the Wall and Fitting the Piping Hole Cover
Make a hole of ‘B’mm in diameter, slightly descending to outside the wall.
Install piping hole cover and seal it off with putty after installation.
1. Find a suitable mounting location, ensuring there is adequate support to hold
the weight of the unit, check it is level, then temporarily fasten the plate.
Wall hole
2. Check the plate is level, by hanging a thread with a weight from
the central top of the plate or using a spirit level, then fasten securely.
ØBmm
3. Determine the wall hole location ‘A’ using a measuring tape.
Outdoor side
Indoor side
Thickness of wall
(Section of wall hole)
Piping hole pipe
G
3 Installation of the Indoor Unit
Drawing of pipe
[ Rear piping ]
Draw pipes and the drain hose, then fasten them with adhesive tape
[ Left Left-rear piping ]
HSU-26HEK03/R2(DB)/I
In case of left side piping, cut away, with a nibbler, 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.
938
1. Insert the drain hose into the cavity of heat insulation materials of indoor unit.
2. Insert the indoor/outdoor electric cable from the back of the indoor unit, and
pull it out on the front side, then connect them.
3. Coat the
seal face with refrigerant oil and connect pipes. Cover the
connection part with heat insulation materials, and
it with adhesive tape.
60
100
60
229
480
110
Indoor/outdoor electric cable
Piping
Heat insulation
material
Lid for right
piping
HSU-35HEK03/R2(DB)/I
Pipe supporting
plate
Drain hose
Lid for left piping
Lid for under piping pipe
Fix with adhesive tape
1046
Indoor/outdoor electric cable and drain hose must be bound with refrigerant
piping by protecting tape.
[ Other direction piping ]
Cut away, with a nibbler, 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 crush the pipes.
70
191
85
70
667
135
Connect the indoor/outdoor electric cable.
HSU-53HEK03/R2(DB)/I
Fixing the indoor unit body
Hang the unit body onto the upper notches of the
mounting plate. Move the body from side to side to
1156
it is
securely.
In order to
the body onto the mounting plate,hold
up the body on an angle from the underside and
then pull it down perpendicularly.
mounting plate
Unloading of indoor unit body
70
40
70
When you remove the indoor unit,
use your hand to raise the
138
860
105
body from the hooks, then lift the
bottom of the body outward
HSU-71HEK03/R2(DB)/I
slightly and lift the unit on an angle
until it separates from the mounting plate.
mounting plate
Hooks
Fix a mounting bar to the side bar and lintel (sold separately), and then fasten
the plate to the mounting bar.
Refer to note 1, “ When the mounting plate is
“, for the position of wall hole.
5
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Indoor unit cont.
DRED Function
6.Please consult your reseller and/or installer to determine if you have a DRED appliance.
Connect output from your home's electricity power meter (where available) to the RJ45
connector on the outdoor unit, as shown.
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.
(This function is unavailable on some models.)
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 is fitted or installed.
2. Pull out the cable on the front side, and connect the cable
making a loop.
When connecting the cable before installing
the indoor unit
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.
1 Installation of Outdoor Unit
After the cable connection, always fasten the connected cable
with the wiring cover.
Install according to ‘Drawing for the installation of indoor and outdoor units’
(see page 4)
2 Connection of pipes
To bend a pipe, use the correct bending tool, so as not to crush the
pipe, and the bending radius should be 30 to 40 mm or longer.
Connect the pipe gas side
The connection pipe is specialized for R410A.
When connecting the cable,
the terminal number of indoor
Note
and outdoor units carefully. If wiring is not correct, the system will
not operate correctly. Damage to the PCB due to incorrect
wiring is not covered by warranty.
Forced fastening without careful centering may
damage the threads and cause a leakage of gas.
damage the threads and cause a leakage of gas.
Forced fastening without careful centering may
Half union
Flare nut
PipeLidqiuaimd esitdeer6(Ø.3)5mm(1/4F")asteningtorque
18N.m
Liquid side 6.35mm (1/4")
18 N.m
Electrical connection
Liquid/Gas side9.52mm(3/8")
Liquid/Gas side 9.52mm (3/8") 42 N.m
Gas side 12.7mm(1/2")
42 N.m
55N.m
60 N.m
Gas side 12.7mm (1/2")
55 N.m
Outdoor unit
Indoor unit
Gas side 15.88mm(5/8")
Gas side 15.88mm (5/8") 60 N.m
Spanner
Torque wrench
Be careful that foreign materials such as sand, etc. do not enter the pipe. The
charge of refrigerant must be conducted by professional air conditioner engineer.
Before adding additional refrigerant, perform air evacuation from the refrigerant
pipes and indoor unit using a vacuum pump, then charge additional refrigerant.
4G0.75mm2
CAUTION
Power cable: 3G1.5mm2
POWER
Outdoor unit
HSU-26HEK03/R2(DB)/O
HSU-35HEK03/R2(DB)/O
Indoor unit
B
Outdoor unit
B
A
Indoor unit
Indoor unit
A
Outdoor unit
4G0.75mm2
Max.Elevation: Amax
Outdoor unit
= 10m (HSU – 26/35)
= 15m (HSU – 53/71)
Oil trap
POWER
{
B
In case the elevation A is more
Power cable:
3G2.5mm2
than 5m, oil trap shoud be
installed every 5~7m
Indoor unit
A
HSU-53HEK03/R2(DB)/O
HSU-71HEK03/R2(DB)/O
Max. Length: Bmax
= 15m (HSU – 26/35)
= 25m (HSU – 53/71)
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
and power cable is
H05RN-F or H07RN-F.
Pre charge
Base charge pipe length
Additional
charge amount
20g/m
Model
2. If the PC board fuse is broken replace with a T.3.15A/250VAC (Indoor)
or T.25A/250VAC (Outdoor).
HSU-26HEK03/R2(DB)/O 1000g
HSU-35HEK03/R2(DB)/O 1080g
HSU-53HEK03/R2(DB)/O 1550g
HSU-71HEK03/R2(DB)/O 2100g
7m
3. The wiring method should be in line with the local and national wiring
standards.
7m
20g/m
10m
10m
20g/m
4. After installation, the power isolator should be easily reached.
50g/m
5. A breaker should be incorporated into
wiring. The breaker should be
all-pole switch and the distance between its two contacts should be not less
than 3mm.
6
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Outdoor unit cont.
Connection of Electrical Cable
3
Step 4
Open the 2-way valve to an angle of anticlockwise 90 degrees.
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.
After 6 seconds, close the 2-way valve and test for refrigerant gas leakage.
If wiring is not correct, proper operation can not be carried out and the
controller may be damaged.
2-way valve
3-way valve
Fix the cable with a clamp.
Open 90O
Attaching Drain-Elbow
4
If the drain-elbow is used,
please attach it as
(Note: Only for heat pump unit.)
Step 5
No gas leakage? If ok, proceed to Step 6.
Evacuation Method: Use vacuum pump
5
In case of refrigerant leakage, tighten parts of pipe connections. If leakage
stops, then proceed to Step 6.
Step 1
Remove the service port cap from the 3 way valve, the valve caps for the
2 way & 3 way valves. Connect hose to the service port (low) side of the
manifold gauge.
If this does not stop gas leakage, reclaim all refrigerant from the service
port. After
and repeating vacuuming on the system, with the
prescribed refrigerant level. Check again for leaks.
Then connect the centre hose from the manifold gauge to the vacuum pump.
2-way valve Liquid Side
3-way valve Gas Side
Step 6
Gauge manifold (for
R410A)
Detach the charge hose from the service port, open 2-way valve and 3-way valve.
Turn the valve anticlockwise until closed.
2-way valve
3-way valve
Vacuum pump (for R410A)
Tube (for R410A)
Step 2
Open the tap on the low side of the manifold and operate the vacuum pump.
If the gauge (low) reaches a vacuum immediately repeat step 1 above again.
Step 7
To prevent refrigerant leakage, tighten the service port’s taps and caps to ensure
they are
sealed.
2-way valve
3-way valve
Open
Valve rod cap
Valve rod cap
Step 3
Service port cap
Vacuum for over 15min. Check the (low) gauge which should read
-0.1 MPa (-76 cm Hg) at Iow pressure side. After completion of vacuuming
the system, close the low tap on the manifold and turn off the vacuum pump.
Check the low side gauge to see if it holds for 1-2 min. If the gauge does not
Step 8
After
hold pressure, check all the
and return to the beginning of Step 3.
the caps, check for refrigerant gas leakage around the caps.
Close
CAUTION
If the refrigerant of the air conditioner leaks, it is necessary to reclaim all
the refrigerant, then pull a vacuum BEFORE recharging the refrigerant into
the air conditioner according to the amount marked on the name plate.
Please do not charge with refrigerant, except as
(R410A), or
allow air to enter into the cooling circulation system. Otherwise, this may
cause abnormal high pressure in the system which may lead to personal
injuries or damage to piping.
7
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Refrigerant charge label
Outdoor unit cont.
Contains fluorinated greenhouse gases
covered by the Kyoto Protocol
1 Power Source Installation
The air conditioner must be wired with a dedicated circuit to the distribution
board. The protection device should be sized to meet the current
requirements of the unit as shown on page 3 and comply with local and
national wiring standards.
If installing the air conditioner in a moist place, please install an earth
leakage breaker.
For installation in other places, use a circuit breaker.
Protocol. Do not vent into the atmosphere.
Refrigerant type: R410A
2 Cutting and Flaring Work of Piping
GWP* value:1975
Pipe cutting is carried out with a pipe cutter and burrs must be removed.
GWP=global warming potential
Flare tool for R410A
Clutch-type
Conventional flare tool
clutch-type(Rigid-type) Wing-nut type (Imperial-type)
A
0~0.5mm
1.0~1.5mm
1.5~2.0mm
be adhered in the proximity of the product charging port (e.g. onto the inside of the
stop value cover).
1.Cut pipe
2.Remove burs
Flare tooling die
A
B factory refrigerant charge of the product: see unit name plate
C
D total refrigerant charge
E outdoor unit
3.Insert the flare nut
4.Flare pipe
F refrigerant cylinder and manifold for charging
Check for installation and test run
Correct
Incorrect
Please kindly explain to our customers how to operate the unit through
the instruction manual.
Put check mark
in boxes
Check items for test run
Lean
Damage of flare
Partial Too outside
Crack
Gas leak from connecting pipe?
Insulation of pipe connecting ?
3 On Drainage
Please install the drain hose to be always sloping downhill.
Examples of incorrect
Are the indoor and outdoor interconnecting cables
interconnecting cables
Is drainage securely carried out?
Is the earth line securely connected?
Less than
5cm
It becomes
high midway
The end is imm-
ersed in water
It waves.
The gap with the
ground is too small. smell from a ditch
There is the bad
Is power source voltage correct?
Is there any noise?
Is the indicator lamp lit?
condensate is carried to outdoor.
In case that the attached drain hose is in a room, please apply
insulation to drain
Are cooling and heating (when in heat pump) performing normally?
Is the operation of room temperature adjustment normal?
.
8
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