Hitachi RAC-70YH7 Service Manual page 7

Figure showing the installation of Indoor and Outdoor unit
700
Be sure to
above
completely
200 mm
seal any
gap with
putty.
– 6 –
2
above 50mm
above 2300 mm
The indoor piping should be
insulated with the enclosed
insulation pipe. (If the
insulator is insufficient,
please use commersial
products).
G The difference in height
between the indoor and
outdoor unit should be kept
max 20m.
G
The connecting pipe, no
matter big or small, should
all be insulated with
insulation pipe and then
wrapped with vinyl tape.
(The
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).
1
above 100mm
insulator will