3 Piping work and refrigerant charge
Refrigerant and drain hose installation
SMGB0099 rev.0 - 12/2016
117
3
Drain pipe installation
The correct position for the drain hose connection is shown below.
Prepare a polyvinyl chloride (PVC) pipe with an outer diameter of 32 mm.
Fasten the tubing to the drain hose with an adhesive and the factory-supplied clamp. The drain piping must be performed
with a down-slope pitch of 1/25 to 1/100.
Pitch of 4% (1/25)
to 1% (1/100)
Max. 850mm
Insulate the drain pipe after connecting the drain hose.
Insulation (Field-Supplied)
Side Unit
1/25~1/100
Down Slope
Polyvinyl Chloride Tube
(Field-Supplied)
Clamp
(Factory-Supplied)
Drain Piping
(Factory-Supplied)
?
N O T E
If the relative humidity of the inlet air or the ambient air exceeds 80% in the place where the unit is installed, fit an auxiliary drain pan (field-
supplied) below the indoor unit, as indicated in the figure.
Indoor unit
Auxiliary drain pan
(field-supplied)
Indoor unit
Auxiliary drain pan
(field-supplied)
?
N O T E
If there is excessive clearance between the drain pipe connection and the drain hose, add a sealing material between both parts in order
to fit and not deform the drain hose.
