Hitachi RAK-25PEB Service Manual page 7

Figure showing the installation of lndoor and Outdoor unit
MODEL RAK-18PEB/RAC-18WEB
RAK-25PEB/RAC-25WEB
RAK-35PEB/RAC-35WEB
RAK-25PEBC/RAC-25WEB
RAK-35PEBC/RAC-35WEB
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
Be sure to
completely
seal any gap
with putty.
above 200mm
above
300mm
above 50mm
Plug (Procure locally)
above
50mm
give clear
as wide a
possible
above
200mm
7
above
50mm
2,300 mm or more
The indoor piping should be
insulated with the enclosed
insulation pipe. (If the insulator is
insufficient, please use commercial
products.)
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).
The connection of insulated drain
hose.
Inner diameter 16mm
Please use insulated drain hose for
the indoor piping (commercial
product)
above 50mm