Hitachi RAS-30CH6 Service Manual page 7

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Figure showing the installation of Indoor and Outdoor unit
CAUTION
In case the pipe length is more than 8m, add refrigerant R22 at 40 gram per every meter exceeds. However,
pipe length shall not exceed 30m.
above 100mm
g above 500 mm
0301E (30CH6) pg 1-5
Be sure to
completely
above
seal any
200 mm
gap with
putty.
above 200 mm
5
above 2300 mm
h above 200 mm
(
)
g give clearance
as wide as possible
above 200 mm
– 5 –
16/12/05, 2:35 PM
above 50mm
above 100mm
The indoor piping should be
insulated with the enclosed
insulation pipe. (If the insulator
is insufficient, please use
commersial products).
The difference in height
G
between the indoor and
outdoor unit should be kept
max 10m.
The connecting pipe, no
G
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 ø 16mm
Please use insulated drain
hose for the indoor piping
(commercial product).

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