22
Installation Procedure
English
Installation Procedure
Installation Procedure
CAUTION
• Must fit tightly against body without any gap.
• Make sure that all refrigerant connection must be
accessible for easy maintenance and detachment.
• Install the insulation not to get wider and use the
adhesives on the connection part of it to prevent
moisture from entering.
• Wind the refrigerant pipe with insulation tape if it is
exposed to outside sunlight.
• Install the refrigerant pipe respecting that the insulation
does not get thinner on the bent part or hanger of pipe.
• Add the additional insulation if the insulation plate
gets thinner.
a x 3
Hanger
Additional insulation
a
Refrigerant pipe
insulation
5 Select the insulation of the refrigerant pipe.
• Insulate the gas side and liquid side pipe, noting
the insulation thickness that must differ according
to the pipe size.
• Standard: Less than an indoor temperature of 30°C,
with humidity at 85%. If installing in a high humidity
environment, use one grade thicker insulator by
referring to the table below. If installing in an
unfavourable environment, use thicker one.
• The heat-resistance temperature of the insulator
must be more than 120°C.
Pipe
Pipe size
(mm)
Insulation Type (Heating/Cooling)
Remarks
Standard
[30°C, 85%]
High humidity
[30°C, over 85%]
EPDM, NBR
Liquid
pipe
Ø6.35 to
Ø9.52
9t
←
Internal
temperature
is higher
than 120°C
Ø12.7 to
Ø50.80
13t
←
Gas
pipe
Ø6.35 13t 19t
Ø9.52 to
Ø25.40
19t
25t
Ø28.58 to
Ø44.45
32t
Ø50.80 25t 38t
• When installing insulation in the places and
conditions below, use the same insulation that is
used for high humidity conditions.
<Geological condition>
High humidity locations such as shorelines, hot springs, lake
or riversides, and ridges (when part of the building is covered
by earth and sand)
<Operation purpose condition>
Restaurant ceiling, sauna, swimming pool etc.
<Building construction condition>
Ceilings frequently exposed to moisture and cooling are
not covered. For example, pipes installed at a corridor of a
dormitory and studio or near an exit that opens and closes
frequently.
Places (where the pipes are installed) that are highly humid
due to a lack of ventilation.
• Refrigerant pipe before EEV kit and MCU or without
EEV kit and MCU
– You can contact the gas side and liquid side
pipes but the pipes should not be pressed.
– When contacting the gas side and liquid side
pipe, use 1 grade thicker insulator.
• Refrigerant pipe after EEV kit and MCU
– Install the gas side and liquid side pipes, leave
10mm of space.
– When contacting the gas side and liquid side
pipe, use 1 grade thicker insulator.
To Next Page
Loading...
