Hitachi RAC-18WED Service Manual page 8

Figure showing the installation of lndoor and Outdoor unit
MODEL RAK-50PED/RAC-50WED
RAK-50PEDC/RAC-50WED
The clearances of the
unit from top, left, right
and front are specified
in figure below. At least
three of the above sides
must be open air.
above 100mm
above 300mm
above 50mm
Be sure to
completely
seal any gap
with putty.
above 200mm
above
50mm
Plug (Procure locally)
The indoor piping should be
insulated with the enclosed
insulation pipe. (If the insulator is
insufficient, please use commercial
products.)
above 50mm
give clearance
as wide as
possible
above
The connection of insulated drain
200mm
hose.
Please use insulated drain hose for
the indoor piping (commercial
product)
8
above 50mm
2,300 mm or more
The refrigerating machine oil is
easily affected by moisture. Use
caution to prevent water from
entering the cycle.
The difference in height between
the indoor and outdoor unit
should be kept below 10m.
The connecting pipe, no matter
big or small, should all be
insulated with insulation pipe and
then wrapped with vinyl tape.
(The insulator will deteriorate if
it is not wrapped with tape).
Inner diameter 16mm