nstallation manua
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oo
conditione
p
.
for r
m air
HSU-26HEK03/R2(DB)/I
r
Please ex
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
ead this manual before installation and keep it for future reference.
lain to the user how the product works and refer them to the operation manual
NO.0010553937
Content
Preparation p3
Accessory parts p3
Selection pipe p3
Drawing for the installation of indoor and outdoor units p3
Indoor unit p5
Outdoor unit p6
Refrigerant charge label p8
Check for installation and test run p8
2
Preparation
Accessory parts
Necessary tools for installation
Driver
Nibbler
Hacksaw
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
Flaring tool
Knife
Measuring tape
Reamer
Refrigeration gauges
Power source
Install an exclusive circuit for the power.
Check the power source voltage is the same as the rating plate.
Selection of installation place
Indoor Unit
The place chosen to install the indoor unit should be:
Not affected by heat or steam generated in the vicinity, where inlet and outlet
of the unit are not blocked or restricted.
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
Remote controller (1)
AAA dry battery (2)
Mounting plate (1)
Plastic cap (4)
Ø4X25 Screw (4)
Drain hose (1)
Cushion (4)
Drain-elbow (1)
Pipe supporting plate (1)
Selection of pipe
Model Liquid pipe (Ø) Gas pipe (Ø)
HSU-26HEK03/R2(DB)/O
HSU-35HEK03/R2(DB)/O
HSU-53HEK03/R2(DB)/O
HSU-71HEK03/R2(DB)/O
NOTE: The thickness of the pipe must be at least 0.8mm.
") 9.52mm (3/8")
") 9.52mm (3/8")
") 12.7mm (1/2")
") 15.88mm (5/8")
Power requirements
Model Max rated current
HSU-26HEK03/R2(DB)/O 6.1
HSU-35HEK03/R2(DB)/O 6.0
HSU-53HEK03/R2(DB)/O 10.5
HSU-71HEK03/R2(DB)/O 13.8
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
Drawing for the installation of indoor and outdoor units
Attention must be
More than 5cm (26/35/53)
More than 10cm (
More than 10cm
Arrangement of
piping directions
71)
Rear left
Left
Below
More than 10cm (26/35/53)
A
pipe length is 2m.
are supplied parts
and
G
Rear
right
Right
More than 10cm (26/35/53)
More than 15cm (
More than 20cm (71)
paid to the rising up
of drain hose
G
More than 10cm
F
A
C
71)
D
Optional parts for piping
A
Non-adhesive tape
Adhesive tape
B
Saddle (L.S.) with screws
C
Connecting electric cable
D
for indoor and outdoor
Drain hose
E
Heating insulating material
F
Piping hole cover
G
the outdoor unit (Unit:mm)
Z
X Y X
Dimensions
Model
HSU-26HEK03/R2(DB)/O 140 500 256
HSU-35HEK03/R2(DB)/O 140 500 256
HSU-53HEK03/R2(DB)/O 113.5 583 319.5
HSU-71HEK03/R2(DB)/O 113.5 633 340
x y z
Fixing of outdoor unit
E
Fix the unit to concrete or block with
horizontally.
More than 60cm
More than 15cm (9/12/18)
More than 25cm (24)
earthquake or strong wind.
unit by attaching
a vibration-proof mat.
The picture above is just for your reference. Please refer to the actual product purchased.
4
Indoor Unit
Fitting of the Mounting Plate and Positioning of the Wall Hole
1
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.
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.
3. Determine the wall hole location ‘A’ using a measuring tape.
HSU-26HEK03/R2(DB)/I
938
562
245
20
6060 100
229
480
110
HSU-35HEK03/R2(DB)/I
1046
Making a Hole on the Wall and Fitting the Piping Hole Cover
2
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.
Wall hole
ØBmm
Indoor side
(Section of wall hole)
Installation of the Indoor Unit
3
Thickness of wall
G
Piping hole pipe
Outdoor side
Drawing of pipe
[ Rear piping ]
Draw pipes and the drain hose, then fasten them with adhesive tape
[ Left Left-rear piping ]
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.
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
245
20
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
Heat insulation
material
Lid for right
piping
Lid for under piping pipe
Fix with adhesive tape
Lid for left piping
Drain hose
it with adhesive tape.
Indoor/outdoor electric cabl e
Piping
Pipe supporting
plate
268
299
13
85
70
667191
135
268
13
70
HSU-53HEK03/R2(DB)/I
1156
260
320
12
70 40
138
860
260
12
70
105
HSU-71HEK03/R2(DB)/I
Fix a mounting bar to the side bar and lintel (sold separately), and then fasten
the plate to the
Refer to note 1, “ When the mounting plate is “, for the position of wall hole.
mounting bar.
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.
Connect the indoor/outdoor electric cable.
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
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
When you remove the indoor unit,
use your hand to raise the
body from the hooks, then lift the
bottom of the body outward
slightly and lift the unit on an angle
until it separates from the mounting plate.
Hooks
mounting plate
5
Half union
Flare nut
Torque wrench
Spanner
Forced fastening without careful centering may
damage the threads and cause a leakage of gas.
Pipe Diameter( ) Fastening torque
Liquid side6.35mm(1/4") 18N.m
Liquid/Gas side9.52mm(3/8") 42 N.m
Gas side 12.7mm(1/2") 55N.m
Gas side 15.88mm(5/8") 60 N.m
DRED FunctionIndoor unit cont.
Connecting the indoor/outdoor Electric Cable
4
Removing the wiring cover
Remove terminal cover at right bottom corner of indoor unit,
then take off wiring cover by removing its screws.
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.
After the cable connection, always fasten the connected cable
with the wiring cover.
When connecting the cable,
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.
the terminal number of indoor
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.
(This function is unavailable on some models.)
Installation of Outdoor Unit
1
Install according to ‘
(see page 4)
Connection of pipes
2
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.
Drawing for the installation of indoor and outdoor units’
Forced fastening without careful centering may
damage the threads and cause a leakage of gas.
Electrical connection
Indoor unit
4G0.75mm
Power cable: 3G1.5mm
2
2
HSU-26HEK03/R2(DB)/O
HSU-35HEK03/R2(DB)/O
Indoor unit
2
2
Power cable:
4G0.75mm
3G2.5mm
HSU-53HEK03/R2(DB)/O
HSU-71HEK03/R2(DB)/O
1. If the supply cord is damaged, it must be replaced by the manufacturer or its
service agent or a similar qualified person. The t ype of connecting wire
and power cable is
2. If the PC board fuse is broken replace with a T.3.15A/250VAC (Indoor)
or T.25A/250VAC (Outdoor).
3. The wiring method should be in line with the local and national wiring
standards.
4. After installation, the power isolator should be easily reached.
5. A breaker should be incorporated into
all-pole switch and the distance between its two contacts should be not less
than 3mm.
6
H05RN-F
or H07RN-F.
Outdoor unit
POWER
Outdoor unit
1
2
3
(C)
1
)
L
(
{
2
N
)
(
POWER
wiring. The breaker should be
Pipe diameter (Ø) Fastening torque
Liquid side 6.35mm (1/4") 18 N.m
Liquid/Gas side 9.52mm (3/8") 42 N.m
Gas side 12.7mm (1/2") 55 N.m
Gas side 15.88mm (5/8") 60 N.m
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.
CAUTION
Outdoor unit
Indoor unit
B
A
Outdoor unit
Outdoor unit
Oil trap
B
A
Indoor unit
Max.Elevation: Amax
= 10m (HSU –
= 15m (HSU –
In case the elevation A is more
than 5m, oil trap shoud be
installed every 5~7m
Max. Length: Bmax
= 15m (HSU –
= 25m (HSU –
Pre charge
Model Base charge
HSU-26HEK03/R2(DB)/O 1000g 7m 20g/m
HSU-35HEK03/R2(DB)/O 1080g 7m 20g/m
HSU-53HEK03/R2(DB)/O 1550g 10m 20g/m
HSU-71HEK03/R2(DB)/O 2100g 10m 50g/m
pipe length
B
A
26/35)
53/71)
26/35)
53/71)
Indoor unit
Additional
charge amount
Outdoor unit cont.
Connection of Electrical Cable
3
3
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.
If wiring is not correct, proper operation can not be carried out and the
controller may be damaged.
Fix the cable with a clamp.
Attaching Drain-Elbow
4
4
If the drain-elbow is used,
please attach it as
(Note: Only for heat pump unit.)
4
Evacuation Method: Use vacuum pump
5
5
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.
Then connect the centre hose from the manifold gauge to the vacuum pump.
2-way valve Liquid Side
3-way valve Gas Side
Step 4
Open the 2-way valve to an angle of anticlockwise 90 degrees.
After 6 seconds, close the 2-way valve and test for refrigerant gas leakage.
2-way valve
3-way valve
O
Open 90
Step 5
No gas leakage? If ok, proceed to Step 6.
In case of refrigerant leakage, tighten parts of pipe connections. If leakage
If this does not stop gas leakage, reclaim all refrigerant from the service
port. After
prescribed refrigerant level. Check again for leaks.
stops, then proceed to Step 6.
and repeating vacuuming on the system, with the
Tube (for R410A)
Gauge manifold (for
Vacuum pump (for R410A)
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.
Open
Step 3
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
hold pressure, check all the
and return to the beginning of Step 3.
Step 6
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
Step 7
To prevent refrigerant leakage, tighten the service port’s taps and caps to ensure
they are
Service port cap
sealed.
2-way valve
3-way valve
Valve rod cap
Valve rod cap
Step 8
After 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
0
A C
ve
a
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)
t
A 0
m
m
e
w
d
tomall
c
wave
tha
i
.
t p
o
ve
t
th
n
f
fl
a
r
It
c
.
ied to outdoo
.
.
A
5
l
ge
g
the
uctio
.
?
?
?
?
?
check mark
es
g
ge
dedicated circui
distributio
i
.
Outdoor unit cont.
Power Source Installation
1
air conditioner must be wired with a
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
nat
onal wiring standards
If installing the air conditioner in a moist place, please install an earth
leakage breaker.
or installation in other places, use a circuit breaker.
Cutting and Flaring Work of Pipin
2
pe cutting is carried out with a pipe cutter and burrs must be removed.
t to the
Refrigerant charge label
Contains fluorinated greenhouse gases
covered by the Kyoto Protocol
n
R410A
2
1=
2=
1
1+2=
F E
rotocol. Do not vent into the atmosphere
efrigerant type: R410
WP* value:197
WP=global warming potentia
kg
kg
kg
A
B
C
D
Flaroo
Flar
oolingd
or
On Draina
3
lutch
~0.5m
41
ea
tc-tye(Rigid
1.0~1.
1
3.Inser
Damageo
ntion
ype
e
eflarut
are Parti
ra
lease install the drain hose to be always sloping downhill
becom
ighid
T
ndensate is carr
imm-
r.
Thegwiththe
roun
In case that the attached drain hose is in a room, please apply
insulation to drain
oo
y
~2m
.
m
n
.
-ty
p
outsid
Ther
ista
melm a dit
e adhered in the proximity of the product charging port (e.g. onto the inside of the
top value cover).
A
factory refrigerant charge of the product: see unit name plate
total refrigerant char
outdoor unit
refrigerant cylinder and manifold for chargin
Check for installation and test run
Please kindly explain to our customers how to operate the unit through
instr
Gas leak from connecting pipe?
Insulation of pipe connecting
Are the indoor and outdoor interconnecting cables
Is drainage securely carried out
Is the earth line securely connected
Is power source voltage correct?
Is there any noise
Is the indicator lamp lit
Are cooling and heating (when in heat pump) performing normally
Is the operation of room temperature adjustment normal?
n manual
heck items for test run
interconnecting cables
Put
in box
?
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