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Indoor 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.
Electrical connection
Indoor unit
4G0.75mm
Power cable:
3G1.5mm
HSU-26HEK03/R2(DB)/O
HSU-35HEK03/R2(DB)/O
Indoor unit
4G0.75mm
3G2.5mm
Power cable:
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 type of connecting wire
and power cable is H05RN-F or H07RN-F.
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
the terminal number of indoor
Outdoor unit
2
POWER
2
Outdoor unit
2
{
POWER
2
wiring. The breaker should be
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.
(This function is unavailable on some models.)
Installation of Outdoor Unit
1
Install according to '
Drawing for the installation of indoor and outdoor units
(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.
Forced fastening without careful centering may
Forced fastening without careful centering may
Half union
Flare nut
damage the threads and cause a leakage of gas.
damage the threads and cause a leakage of gas.
Pipe diameter (Ø)
Liquid side 6.35mm (1/4")
Liquid/Gas side9.52mm(3/8")
Liquid/Gas side 9.52mm (3/8")
Gas side 12.7mm (1/2")
Spanner
Torque wrench
Gas side 15.88mm (5/8")
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
Indoor unit
B
A
Outdoor unit
Outdoor unit
Oil trap
B
Indoor unit
A
Model
Base charge
HSU-26HEK03/R2(DB)/O 1000g
HSU-35HEK03/R2(DB)/O 1080g
HSU-53HEK03/R2(DB)/O 1550g
HSU-71HEK03/R2(DB)/O 2100g
'
Pipe Diameter( )
Fastening torque
Fastening torque
Liquid side6.35mm(1/4")
18N.m
18 N.m
42 N.m
42 N.m
Gas side 12.7mm(1/2")
55N.m
55 N.m
Gas side 15.88mm(5/8")
60 N.m
60 N.m
Outdoor unit
B
Indoor unit
A
Max.Elevation: Amax
= 10m (HSU – 26/35)
= 15m (HSU – 53/71)
In case the elevation A is more
than 5m, oil trap shoud be
installed every 5~7m
Max. Length: Bmax
= 15m (HSU – 26/35)
= 25m (HSU – 53/71)
Pre charge
Additional
pipe length
charge amount
7m
20g/m
7m
20g/m
10m
20g/m
10m
50g/m
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