Hitachi RAC-25FPA, Service Manual

Page: 7 / 117

above 200mm
A
above 100mm
above 200mm
( )
above 50 mm when
installed on the
ceiling of balcony
B
s The refrigerating machine oil is easily affected by moisture. Use caution
to prevent water from entering the cycle.
s The difference in height between the indoor and outdoor unit should
be kept below 10m.
s
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 ø16mm
The connection of insulated drain hose.
Please use insulated drain hose for the indoor
piping (commer cial product).
For outdoor unit installation, allow at least 2 sides of
space around the unit to ensure ventilation ue.
Maximum pipe length 20m Minimum pipe length 5m
[Indoor unit installation]
Direction of Piping
Piping con guration may be in three
different directions: direct rear piping,
right downward piping and right
sideways piping.
Above 100mm
Above 150mm
Above 200mm
(Procure locally)
Be sure to completely
seal any gap with putty.
Drain pipe
Must be installed separately.
Insulate indoor part of pipe to
prevent condensation.
The indoor piping should be
insulated with the enclosed
insulation pipe. (If the insulator
is insufficient, please use
commercial products.)
Plug
Figure showing the installation of lndoor and Outdoor unit
MODEL RAF-25R A/RAC-25FPA P
P
RAF-3 5R A/RAC-3 5FPA
RAC-25FPA RAC-35FPA
A
B
above 300mm
above 50mm
above 300mm
above 50mm
7
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.
n