Drain Pump Installation (Optional); Connecting The Indoor Unit Assembly Piping - Samsung IDH1800E Service Manual

Testing the drainage
Prepare a little water about 5 liter.
1. Pour water into the base pan in the indoor unit
as shown in figure.
2. Confirm that the water flows out through the
drain hose.

4-4-11. Drain Pump Installation (Optional)

Care must be taken when installing the drain hose for
the indoor unit to ensure that any condensate water is
correctly drained outside. The drain hose can be
installed to the right or left side of the base pan.
1. Connect the cable to the electrical component
box as shown in figure.
Float
switch
2. Screw the drain pump to the side of the indoor
unit with two screws.
Note : When installing the drain pump, leave a 7mm
space between the bottom of the drain pan and
the drain pump.
Drain pump
7mm
Bottom of the drain pan
Samsung Electronics
Drain pump
3. Adjust the DIP switch(SW2) on the main PCB
according to the table below.
Switch No.
2
3
Note : Check below if the drain pump has been
installed.
1 The base pan must be level with the ceiling.
2 Wrap the drain tube outlet on the right and left
side of the indoor unit with an insulating
materials.
4-4-12. Connecting the Indoor Unit
Assembly Piping
There are two refrigerant pipes of differing diameters:
A smaller one(9.52mm, 3/8") for the liquid refrigerant
A larger one(15.88mm, 5/8") for the gas refrigerant
The thickness of tube should not less than 1.0mm.
The inside of copper tube must be clean & has no dust.
The connection procedure for the refrigerant pipes
varies according to the exit position of the pipes from
the indoor unit, as seen when facing the indoor in the
"A" side.
Liquid refrigerant port
Gas refrigerant port
Drain hose tube outlet
Liquid refrigerant port
A
Installation
Switch Position
ON
ON
Gas refrigerant
port
Drain tube
outlet
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