Outdoor Unit - Haier HSU18VHK-G Service Manual

Indoor unit
HSU18VHK-W
Power cable:
HSU24VHK-W Power cable:
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. The wiring method should be in line with the local wiring standard.
3. After installation, the power plug should be easily reached.
4. A breaker should be incorporated into fixed wiring. The breaker should be
all-pole switch.

Outdoor unit

Installation of Outdoor Unit
Drawing for the installation of indoor and outdoor units
Install according to
Connection of pipes
To bend a pipe, be careful not to crush the pipe,
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.
The connection pipe is specialized for R410A.
Forced fastening without careful centering may
Half union
Flare nut
damage the threads and cause a leakage of gas.
Liquid/Gas side9.52mm(3/8")
Spanner
Torque wrench
Control wiring :
≥3wire 18AWG
≥3wire 16AWG
Power
cable
Outdoor unit
2 Wire with ground 14AWG
2 Wire with ground 14AWG
Pipe Diameter(ǿ) Fastening torque
Liquid side6.35mm(1/4") 18N.m
42 N.m
Gas side 12.7mm(1/2") 55N.m
Gas side 15.88mm(5/8") 60 N.m
Ensure that on dirt or debris enters the pipe.
The standard pipe length is 7m(27 9/16) . If it is over 7m(27 9/16), the function of
the unit will be affected. If the pipe has to be lengthened, the refrigerant should
be charged, according to 50 g/m(0.045 oz/inch).But the charge of refrigerant must
be conducted by professional air conditioner servicer. Before adding additional
perform air purging from the refrigerant pipes and indoor unit using a vacuum
refrigerant, pump,then
CAUTION
Indoor unit
B
A
Outdoor unit
Outdoor unit
Oil trap
B
Indoor unit
A
Connection
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.
Attaching Drain-Elbow
If the drain-elbow is used,
please attach it as figure. (Note:
Only for heat pump unit.)
Purging Method:To use vacuum pump
1.
Detach the service port's cap of
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 gau-
gemanifold into vacuum pump.
2.
Open the handle at Iow in
moves of gause (Iow) reach vacuum condition in a moment, check 1. again.
3.
Vacuum for over 15min. And check the gauge which should read -0.1MPa
(76 cm Hg) at Iow pressure side. After the completion of vacuuming, close the
handle '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 .
4.
Open the valve rod for the 2-way valve counterclockwise to 90 degrees.
After 6 seconds, close the 2-way valve and make the inspection of gas leakage.
4
charge additional refrigerant.
Outdoor unit
B
Indoor unit
A
●
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.
3-way valve, the valve rod's cap for 2-way valve
gaugemanifold, operate vacuum pump. If the scale-
Domestic Air Conditioner
Installations