Drain Piping - Hitachi Rpk-0.6Fsnh3M Installations- Und Betriebshandbuch

Drain piping

18 DRAIN PIPING
D A N G E R
Do not insert the drain pipe for the indoor unit to the drai-
nage trench where corrosive gases occur. Poisonous gases
flow into the room, so that may cause the poisoning.
N O T E
• Do not create an upper-slope or rise for the drain piping, since
drain water can flow back to the indoor unit and leakage into
the room will occur when the system operation is stopped.
• Do not connect the drain pipe with sanitary or sewage piping
or any other drainage piping.
• When the common drain piping is connected with other indo-
or units, the connected position of each indoor unit must be
higher than the common piping. The pipe size of the common
drain pipe must be large enough according to the unit size and
number of units.
• After performing drain piping work and electrical wiring, check
to ensure that water flows smoothly as in the following pro-
cedure.
1 The standard direction of drain piping connection is rear side
as viewed from the discharge grilles. However, it can be per-
formed from the left side or right side.
Drain pipe connection
(VP16)
Model
RPK-(0.6-1.5)FSN(H)3M
RPK-(2.0-4.0)FSN3M
2 When the left side drain piping connection is performed, re-
move the cap of left side drain pipe, and then attach this cap
to the right side drain pipe in order to change drain piping
connection from right side to left side. If the cap is fixed tightly,
remove the cap by using the plier. (Perform this procedure
before the indoor unit is hung onto the wall.)
30
Exterior contour for indoor unit
B
A
Hole for rear
side piping
A B C
568 107 45
550 141 42
PMML0292A rev.2 - 09/2015 - P5416572
3 Connecting drain piping
a. Provide a vinyl chloride pipe, VP16.
b. When the drain hose is used, do not create rising part or
twist.
VP16
c. Wrap surely the vinyl tape around the drain piping con-
nection.
d. Insulate surely the drain pipe after the vinyl chloride pipe
connection is completed.
(φ D)
4 Do not connect the drain pipe with sanitary or sewage piping
or any other drainage piping.
5 After the drain piping work is completed, check that water
Unit: mm
flows smoothly by pouring water into the drain pan by a cup.
ØD 6 Wrap the field-supplied insulation around the drain pipe run-
ning through the indoor.
65
7 When installing the pipe, do not tie the drain pipe and refrige-
80
rant pipe together.
C A U T I O N
• Pay attention not to splash water to the electrical parts such
as the fan motor or thermistors.
• When the common drain piping is connected with other indoor
units, the connected position of each indoor unit must be hig-
her than the common piping. The size of common drain pipe
must be large enough according to the unit size and number
of units.
Drain
Drain
outlet cap
hose
Drain outlet
cap
Insert until
this line
Left side
Drain
hose
Insert until
this line
Right side
Create down-slope
Wrap the vinyl tape
Connection