Hitachi RCI-1.0FSN3 Service Manual page 127

3 Piping work and
refrigerant charge
Models
RPI-2.0FSN4E
RPI-(2.5/3.0)FSN4E
RPI-(4.0-6.0)FSN4E
N O T E
When installing the pipes, leave enough space for maintenance work in the electrical box of the unit.
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Drain pipe installation
The correct position for the drain hose connection is shown below.
RPI-(2.0-6.0)
Drain pipe
Drain pipe
Prepare a polyvinyl chloride (PVC) pipe with an outer diameter of
32 mm.
Fasten the tubing to the drain hose with an adhesive and the
factory supplied clamp. The drain piping must be performed with a
down-slope pitch of 1/25 to 1/100.
Then insulate the drain hose appropriately.
115
SMGB0077 rev.0 - 01/2013
Gas pipe mm (inches)
Ø15.88 (5/8)
RPI-(8.0/10.0)
Drain pipe
(Factory-Supplied)
Liquid pipe mm (inches)
Ø6.35 (1/4)
Ø9.52 (3/8)
Insulation (Field-Supplied)
Polyvinyl Chloride Tube
(Field-Supplied)
Clamp
Drain Piping
(Factory-Supplied)
3
1/25~1/100
Down Slope