Specifications

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66
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(h) Avoid positioning the drain piping outlet at a place where generation of odor may stimulated. Do not lead the drain piping
direct into a sewer from where sulfur gas may generate.
(i) Drainage test
1) Conduct a drainage test after completion of the electrical work.
2) During the trial, make sure that drain flows properly through the piping and that no water leaks from connections.
3) In case of a new building, conduct the test before it is furnished with the ceiling.
4) Be sure to conduct this test even when the unit is installed in the heating season.
Procedures
1 Supply about 1000 cc of water to the unit through ghe air outlet by using a feed water pump.
2 Check the drain while cooling operation.
(
g
) The height of the drain head may be elevated up to a point 600 mm from the bottom of unit and, when an obstacle exists in the
ceiling space, elevate the piping to avoid the obstacle using an elbow or corresponding gadget. When doing this, if the stretch
for the needed height is too high, the back-flow quantity of drain at the time of interruption of the operation gets too much and
it may cause overflow at the drain pan. Therfore, make the height of the drain pipe withing the distance given in the drawing
below.
295 ~ 325
Drain hose
Right overhead
Joint for VP25 (local procurement)
Maximum local drain up dimension
600
(
j
)Outline of bottom drain piping work
1) If the bottom drain piping can be done with a descending gradient (1/50-1/100), it is possible to connect the pipes as
shown in the drawing below.
2) Do not use acetone-based adhesives to connect to the drain socket.
Remove grommet
Make sure to install
it back after test.
Insert water supply hose for
20mm ~ 30mm to suply water.
(Insert hose facing toward bottom.)
Indoor unit
Attached drain hose clamp
Drain pipng
Drain situation can be checked with transparent socket.
Pour water into a convex joint
If the electrical work has not been completed, connect a convex joint in the drain
pipe connection to provide a water inlet.
Then, check if water leaks from the piping system and that drain flows through
the drain pipe normally.
(
)
Remove
Drain motor connector
CNR 2P Blue
Connecting port of top drain pipes
Standard hard polyvinyl chloride pipes
Insulating material
Connecting port of bottom drain pipes
Rubber stopper(to be removed)
(Removing drain motor connector) Remove
drain motor connector CNP (blue) as shown
in the drawing on the nght. (Note: If the
connector is left connected, drain water is
discharged from the conncting port of top
pipes, causing leakage.)
Connection of pipes