Hitachi RCI-1.0FSN3 Service Manual page 131

3 Piping work and
refrigerant charge
Connect a trap to the drain hose at the angle indicated, as indicated
in the figure.
NOTE
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.
Drainage installation for (-DU) units:
Optional drainage kit (for units without drain pump)
For special cases those installation design finally requires draining
up (and was not desgined from the beginning of the installation
project), it is available the optional drain kit.
 Drain pump
 Screw (2 units)
 Drain hose
 Rubber plug
 Drain pump wire
119
SMGB0077 rev.0 - 01/2013
> 75 mm
4% (1/25) - 1% (1/100)
Indoor unit
Auxiliary drain pan
(field-supplied)
Optional drain up mechanism kit
q
o
p
s
Cap
3
r