Hitachi RAS-18LH2 Service Manual page 7

Figure showing the installation of Indoor and Outdoor unit
!
The installation height of indoor unit must be 2.3m or more.
CAUTION
Be sure to
completely
seal any
gap with
putty.
– 5 –
Figure showing the Installation
of Indoor and Outdoor Unit.
The indoor piping should be
insulated with the enclosed
insulation pipe. (If the
insulator is insufficient,
please use commersial
products).
The difference in height
between the indoor and
outdoor unit should be
kept max 10m.
The connecting pipe,
no matter big or small,
should all be insulated
with insulation pipe and
then warapped with vinyl
tape. (The insulator will
deteriorate if it is not
wrapped with tape).
The connection of insulated
drain hose.
Please use insulated drain
hose for the indoor piping
(commercial product).