1
1-11-1-2-11
NOTE
Make sure the drain pipe has a downward gradient
(1/100 or more) and that there are no water traps.
CAUTION
Do not install an air bleeder as this may cause
water to spray from the drain pipe outlet.
Prohibited
Air bleeder
(1) Drain hose connection
The drain hose is connected below the refrigerant
tubing.
(2) Installing the drain hose
CAUTION
First insert the drain hose (supplied) to the hose band
(supplied) and then install the drain hose to the unit
drain port.
Insert until the drain hose bumps to the end.
Attach the hose band to make the fixed portion 45
degrees upper gradient according to a vinyl tape
(not supplied) of the drain hose (supplied).
Hose band screw torque is 30 - 35 N · cm.
Wind the vinyl tape not to blow up the hose band.
Connect both the drain hose and PVC pipe
(VP20 or similar material, not supplied). Insert until the
PVC pipe bumps to the end and adhere with PVC
adhesive.
Wrap the drain insulator (supplied) between the
connection of the drain hose and tubing not to
expose the copper tubing.
Also, wrap the hose band together.
Wrap the hose band with the drain insulator,
where the screw is located facing upward. Then,
tighten the insulator with a vinyl tape not to cause
the detachment.
If the tubing parts remain exposed, condensation
may occur.
Be sure to use the supplied drain hose.
If other commercially available hose bands are
used, the drain hose may become pinched or
wrinkled and there is danger of water leakage.
Therefore be sure to use the supplied hose bands.
Connect the drain pipe so that it slopes downward
from the unit to the outside.
Never allow water traps to occur in the course of
the piping.
Insulate any piping inside the room to prevent
dripping.
After the drain piping, pour an appropriate amount
of water into the drain pan through the opening on
the side of the air discharge port. Check the water
draining smoothly.
Checking the Drainage
Horizontal Installation Only
After wiring and drain piping are completed, use the
following procedure to check that the water will drain
smoothly. For this, prepare a bucket and wiping cloth to
catch and wipe up spilled water.
(1) Connect power to the power terminal board
(L/1, N/2 terminals) inside the electrical component
box.
(2) Remove the tube cover and slowly pour about
1,200 cc of water through the opening into the drain
pan to check drainage.
(3) Short the check pin (CHK) (6P : 1-4) on the indoor
unit control PCB and operate the drain pump. Check
the water flow through the transparent upper drain
port and see if there is any leakage.
* If the check pin (CHK) (6P : 1-4) is shorted, the fan
starts rotating at high speed and could cause injury.
Upper drain port
Downward slant :
Min. 1/100
Bottom drain port
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(4) When the drainage check is complete, open the check
pin (CHK) (6P : 1-4) and remount the insulator and the
cap onto the drain inspection port.
Water intake
Transparent upper drain port
Drain inspection port
Cap
SM830283-00_欧州向け R32シングル36-71形TD&SM.indb 11
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