1. If the fuse on PC board is broken please change it with the
type of
T. 3.15A/250V (indoor unit), 25A/250V(outdoor unit).
2.Thewiringmethodshouldbeinlinewiththelocalwiringstandard.
3. After installation, the power plug should be easily reached.
4. A breakershouldbeincorporatedintofixedwiring.Thebreakershouldbe
al
l-pole
switch.
Outdoor unit
Install according to Drawing for the installation of indoor and
outdoor units
and the bending radius should be 30(1 1/6) to 40
mm(1 4/7) or longer.
Connecting the pipe of gas side first makes working easier.
TheconnectionpipeisspecializedforR410A.
Installation of Outdoor Unit
Half union
Flare nut
Torque wrench
The standard pipe length is 7m(27 9/16). If it is over 7m(27 9/16), the function of
theunitwillbe
affected. If the pipe has to be lengthened, the refrigerant should
be charged,
accordin
g
to 50 g/m(0.045 oz/inch).
But the charge of refrigerant must
be conducted
by professional
air conditioner servicer. Before adding additional
refrigerant,
perform air
purging from the refrigerant pipes and indoor unit using a vacuum
pum
p,then
Spanner
Forced fastening without careful centering may
damage the threads and cause a leakage of gas.
Pipe Diameter(ǿ) 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
Connection of pipes
charge additional refrigerant.
Outdoor unit
Indoor unit
A
B
Outdoor unit
Indoor unit
A
B
A
B
Outdoor unit
Indoor unit
Oil trap
CAUTION
Max.Elevation: Amax=15 m
●
In case the elevation A is more●
than 5m, oil trap shoud be
installed every 5~7m
Max. Length: Bmax=
0m●
In case the pipe length B is●
more than 10m, the refrigerant
should be charged, according
to 50 g/m.
Connection
If the drain-elbow is used,
please attach it as figure. (Note:
Only for heat pump unit.)
Detach the service port’s cap of
1.
3-way valve, the valve rod’s cap for 2-way valve
an
d 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 gau-
gemanifol
d into vacuum pump.
Open the handle at Iow in
2.
gaugemanifold, operate vacuum pump. If the scale-
moves of gause (Iow) reach vacuum condition in a moment, check 1. again.
3.
(76 cm Hg) at Iow
pre
ssure side. After the
completion of vacuuming, close the
handl
e ‘Lo’ in gaugemanifold and stop the operation of the vacuum pump. Check
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 3 .
Attaching Drain-Elbow
Purging Method:To use vacuum pump
Open the valve rod for the 2-way valve counterclockwise to 90 degrees.4.
After 6 seconds, close the
2-way valve and make the
inspe
ction of gas leakage.
Take off the panel(top), by removing the 5 screws.
Remove the plugs on the conduit plate.
Temporarily mount the conduit tubes on the conduit plate.
Connect both the power supply and unit wire harness to
the corresponding terminals on the terminal board.
Ground the unit in accordance with local codes.
Allow several extra inches of wire for making wiring
connections.
Use lock nuts to secure conduit tubes.
To bend a pipe, be careful not to crush the pipe,
Ensure that on dirt or debris enters the pipe.
Vacuum for over 15min. And check the gauge which should read -0.1MPa
Power cable:
2 Wire with ground 14AWG
Indoor unit
Outdoor unit
Power cable:
Power
cable
2 Wire with ground 14AWG
Control wiring :
≥3wire 18AWG
≥3wire 16
AWG
HSU18VHK-W
HSU24VHK-W
Installations
4
Domestic Air Conditioner
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