LG MULTI V ARNU07GBHA4 Installation Manual page 12

Installation
Drain test
The air conditioner uses a drain pump to drain water.
Use the following procedure to test the drain pump operation:
Feed water
Drain Pump
Drain pan
The supplied flexible drain hose should not be
strained. A strained hose may cause leakage of water.
After the confirmation of the above conditions, prepare the wiring as follows:
1) Never fail to have an individual power specialized for the air conditioner. As for the method of
wiring, be guided by the circuit diagram posted on the inside of control box cover.
2) Provide a circuit breaker switch between power source and the unit.
3) The screws which fasten the wiring in the casing of electrical fittings are liable to come loose
from vibrations to which the unit is subjected during the course of transportation. Check them
and make sure that they are all tightly fastened. (If they are loose, it could give rise to burn-out
of the wires.)
4) Specification of power source
5) Confirm that electrical capacity is sufficient.
6) Be sure that the starting voltage is maintained at more than 90 percent of the rated voltage
marked on the name plate.
7) Confirm that the cable thickness is as specified in the power sources specification.
(Particularly note the relation between cable length and thickness.)
8) Never fail to equip a leakage breaker where it is wet or moist.
9) The following troubles would be caused by voltage drop-down.
• Vibration of a magnetic switch, damage on the contact point, fuse breaking, disturbance by the nor-
mal function of an overload protection device.
• Proper starting power is not given to the compressor.
HAND OVER
Teach the customer the operation and maintenance procedures, using the operation manual.
(air filter cleaning, temperature control, etc.)
12 Indoor Unit
Flexible drain hose
• Connect the main drain pipe to the exterior and leave it
(accessory)
Main
drain pipe • Feed water to the flexible drain hose and check the piping
Drain
• Be sure to check the drain pump for normal operation and
port Glue the joint
Drain hose connection
• When the test is complete, connect the flexible drain hose
Use the clip (accessory)
provisionally until the test comes to an end.
for leakage.
noise when electrical wiring is complete.
to the drain port on the indoor unit.
Flexible drain hose
Hanger
distance
Hanger Bracket
Max 300mm
1~15m
1/50~1/100 slope
Metal
clamp
Flexible drain hose
Insulation
Flexible drain hose