Hitachi RAS-3HVRNM2, Инструкция по установке и обслуживанию, Страница: 30 / 58

2-102 TC-12001
OUTDOOR UNIT
26 P5414950-rev.1
(1) Pipes can be connected from 4 directions as
shown Fig. 6.1. Make a knock-out hole in
the front pipe cover or bottom base to pass
through the hole.
After removing the pipe cover from the unit,
punch out the holes following the guide line
with a screwdriver and a hammer.
Then, cut the edge of the holes and attach
insulation (Field-Supplied) for cables and
pipes protection.
(a) Front and Right Side Piping Work
Select the correct knock-out size
depending on whether it is for power
wiring or transition wiring.
It is available to correct the liquid or gas
piping, power source cable less than
14mm
2
and control cable from “A” part.
When using conduit, remove “A” and
“B” parts. Check to the tube size before
removing “A” and “B” parts.
NOTE:
Protect cables and pipes from the edge
of the cover by insulations, etc. (Field-
Supplied).
(b) Bottom Side Piping Work
After removing bottom of the piping cover,
perform piping and wiring works.
NOTE:
Prevent the cables from coming into direct
contact with the piping.
(c) Rear Side Piping Work
After removing the rear side piping cover,
punch out the “C” holes along the guide
line. When using a racking cover or
conduit, remove “D” part after checking
these diameters.
NOTE:
To avoid injury, protect cables and pipes
with adequate insulation (Field-Supplied).
Consider and install the unit to secure the space of
the piping hole part during the right side piping and
the rear side piping work.
< Example >
Punch out “D” holes (top of the guide line of the
piping cover ) during the right side cable and the
rear side piping work. It is available to install
cables and pipes inside the unit without interfering.
(2) Install securely the piping cover not to be
included water in the unit. Prevent gaps of
pipes and the electrical cables by insulation
(Field-Supplied).
Cut the lower side guide line of the piping
cover when attaching the insulation.
It makes easy the attaching work.
(3) Use a pipe bender or elbow (Field-Supplied)
for bending work when connecting pipe.
Front Side
Piping Cover
Guide Line (Slits)
Right Side Piping Hole
Front Side Piping Hole
A
B
A
B
Liquid
Piping
Bottom Base
Knock-Out
Hole
Gas Piping
Conduit
Rear Cover
C
D