Dimensions of the flare nuts for flared connections
Nominal diameter
Measurement B mm
mm inches
Ø6.35 1/4 17
Ø9.53 3/8 22
Ø12.70 1/2 26
Ø15.88 5/8 29
¿ 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.
The drain hose must have a gradient of 1% (1/100) to 4% (1/25).
The drain hose cannot be installed on an upwards line, not even
on one section of the installation. In this case, the condensate water
accumulates  at  the  lowest  point  immediately  before  the  raised
section of the installation.
Then  insulate  the  drain  hose  appropriately  (only  for  RPI-(2.0–
6.0)FSN2E).
Connect a trap to the drain hose at the angle indicated, as indicated
in the figure (for RPI-(8.0/10.0)FSN2E).
  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.
Insulating material (field-supplied)
4% (1/25) - 1% (1/100)
PVC pipe
(field-supplied)
Clamp
(factory-supplied)
Insulating material: 
(factory-supplied)
Cap
> 75 mm
4% (1/25) - 1% (1/100)
Indoor unit
Auxiliary drain pan
(field-supplied)
3 Piping work and
refrigerant charge
99
SMGB0063 rev. 1 - 10/2010
3