Hitachi RCI-4.0FSN4 - RPI-(16.0;20.0)FSN3 PE(-F) - Ducted Indoor Unit

3 Piping work and refrigerant charge
Refrigerant and drain hose installation
SMGB0099 rev.0 - 12/2016
121
3
3.5.9 RPI-(16.0/20.0)FSN3PE(-f) - Ducted indoor unit
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Refrigerant pipe connection
The location of Liquid, Gas and the Drain Pipe connection is shown below.
Liquid Pipe
Liquid Pipe
Wiring
holes
Gas Pipe
Gas Pipe
Drain
Pipe
(mm)
mm (in)
Model RPI-16.0FSN3PE(-f) RPI-20.0FSN3PE(-f)
Gas Piping Ø19.05 (3/4”) Ø22.2 (7/8”)
Liquid Piping Ø9.52 (3/8”) Ø9.52 (3/8”)
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Required multi kits
The following multikits (sold separately) are necessary to interconnect piping between outdoor and indoor unit:
Indoor Unit Multikit reference
RPI-16.0FSN3PE(-f) E162SN3
RPI-20.0FSN3PE(-f) E242SN3
(Picture for illustrative purpose only)
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Drain pipe installation
For condense draining, prepare a polyvinyl chloride pipe
with a Ø25mm (outer diameter).
Fasten the eld supplied pipe to the drain hose with
adhesive.
The drain piping should be performed with a down-slope
pitch of 1/25 to 1/100.
Connect a syphon, as shown at the gure below.
? NOTE
Keep Electrical Box and Drain Pipe connection free of refrigerant
pipes.
>75 mm
Slope 2%
Plug
? NOTE
If there is excessive clearance between the drain pipe connection and the drain hose, add a sealing material between both parts in order
to t and not deform the drain hose.