5.
Refrigerant Piping Work
(6) In case of the drain piping is necessary for
the outdoor unit, use the drain-kit
(DBS-26 or DBS-26L:Optional Parts) .
(7) The whole of the base of the outdoor unit
should be installed on a foundation. When
using vibration-proof mat, it should also be
positioned the same way.
When installing the outdoor unit on a field-
supplied frame, use metal plates to adjust
the frame width for stable installation as
shown in Fig. 4.6.
Base Width of Outdoor Unit
75mm
Frame Width 60mm
(Field-Supplied)
Frame
Incorrect
Outdoor Unit
is Unstable.
Metal Plate
100mm or more
Metal Plate
Correct
Frame
Base Width of Outdoor Unit
75mm
Outdoor Unit
is Stable.
C10
Recommended Metal Plate Size (Field-Supplied)
Material: Hot-Rolled Mild Steel Plate (SPHC)
Plate Thickness: 4.5T
Fig. 4.6 Frame and Base Installation
Hole
Use refrigerant R410A in the refrigerant cycle.
Do not charge oxygen, acetylene or other
flammable and poisonous gases into the
refrigerant cycle when performing a leakage
test or an air-tight test. These types of gases
are extremely dangerous and can cause an
explosion. It is recommended that
compressed air, nitrogen or refrigerant be
used for these types of tests.
5.1
Piping Materials
(1) Prepare locally-supplied copper pipes.
(2) Select the piping size from the Table 5.1.
(3) Select clean copper pipes. Make sure
there is no dust and moisture inside of the
pipes. Blow the inside of the pipes with
nitrogen or dry air, to remove any dust or
foreign materials before connecting pipes.
NOTE
Cautions for Refrigerant Pipe Ends
When installing pipe through
the wall, secure a cap at the
end of the pipe.
Correct
Correct
Incorrect
Incorrect
Correct
Incorrect
Hole
Hole
Attach a cap
or vinyl tape.
Attach a cap
or vinyl tape.
Attach a cap
or vinyl bag with
rubber band.
Do not place the pipe
directly on the ground.
Rain water can
enter.
Drain Hole
Drain Hole
Position of Drain pipe joint
Optional
Front(Air Outlet)
7
(unit:mm)
(unit:mm)
