Hitachi RPC-1.5FSN3 - RCIM-(0.6-2.5)FSN4(E) - 4-Way Cassette (Compact)

3 Piping work and refrigerant charge
Refrigerant and drain hose installation
SMGB0099 rev.0 - 12/2016
108
3.5.2 RCIM-(0.6-2.5)FSN4(E) - 4-way cassette (compact)

Refrigerant pipe installation
The correct position for the gas refrigerant pipe connection is shown below. The pipe connection must be accessible from
all directions (above, left or right).
177
140
180
145
94
521
Wiring connection
Drain pipe
connection
Refrigerant liquid
pipe connection
Refrigerant gas pipe
connection
(Drain pipe)
(Drain pipe)
(Gas pipe)
(Liquid pipe)
(Gas pipe)
(Liquid pipe)
Models
(1) Gas pipe mm
(inches)
(2) Liquid pipe mm
(inches)
RCIM-(0.6-2.0)FSN4(E) Ø12.70 (1/2”) Ø6.35 (1/4”)
RCIM-2.5FSN4(E) Ø15.88 (5/8”) Ø9.52 (3/8”)

Drain pipe installation
The correct position for the drain hose connection is
shown below.
Prepare a polyvinyl chloride (PVC) pipe with an outer
diameter of 32 mm.
Secure the pipe with the clamp and adhesive supplied.
Drain pipe connection
36
49
177
The drain hose must have a gradient of 1% (1/100) to
4% (1/25).
Consider the following sizes: a + b + c ≤ 1100 mm.
b
F
Ceiling
Drain hose
(accessory)
Support part
1 to 1.5m
(Max. 50mm,
shorter as possible)
1/25 to 1/100
Down-slope
a (Max. 300mm)
Hose band (accessory)
Max. 850mm
For a correct assembly of the drain hose accessory,
follow the instruction shown in the picture below.
! CAUTION
• Do not apply adhesive between the drain hose connection
and the drain hose.
• Do not apply too much force when making the drain hose
connection as this could damage it.
• Do not use bent or twisted drain pipes as these will cause
water leaks.
Then insulate the drain hose appropriately.
Hose band
(accessory)
Insulation
(eld supplied)
20+5mm
Hose band (accessory)
Tightening torque: 3.0-3.5 N.m
Elbow or vinyl chloride VP25
(Field-supplied)
Drain hose (accessory)
Vinyl tape (gray)
Drain pipe connection
For checking drainage
(transparent)
Use vinyl chloride
type adhesive
Tightening torque: 3.0-3.5 N.m
Min. 28mm
Max. 300mm
? 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.