Hitachi RAF-50RPA Service Manual page 7

Figure showing the installation of lndoor and Outdoor unit
M O D E L R A F 5 - 0 R
[Indoor unit installation]
Direction of Piping
different directions: direct rear piping,
right downward piping and right
sideways piping.
Be sure to completely
seal any gap with putty.
Drain pipe
Must be installed separately.
Insulate indoor part of pipe to
prevent condensation.
The clearances of the unit from
top, left, right and fro t are
specified in figure below. At
least three of the above sides
must be open air.
above 100mm
above 200mm
For outdoor unit installation, allow at least 2 sides of
P A R / A C 5 - 0 F P A
n
above 200mm
( )
above 50 mm when
installed on the
ceiling of balcony
Above 150mm
Above 200mm
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
above 50mm
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.
above 200mm
Please use insulated drain hose for the indoor
piping (commer cial product).
7
Above 100mm
Plug
(Procure locally)
Inner diameter ø16mm