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12
Installation Procedure
Instal
lation Pr
oc
edur
e
English
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 86
°F (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 248 °F (120 °C).
Pipe
Pipe size
inch(mm)
Insulation Type (Heating/Cooling)
Remarks
Standard
[86 °F (30 °C),
85%]
High humidity
[86 °F (30 °C),
over 85%]
EPDM, NBR
Liquid
pipe
Ø 1/4
(6.35)
to Ø 3/8
(9.52)
9t
←
Internal
temperature
is higher
than 248 °F
(120 °C)
Ø 1/2
(12.7) to Ø
2 (50.80)
13t
←
Gas
pipe
Ø 1/4
(6.35)
13t
19t
Ø 3/8
(9.52)
to Ø 1
(25.40)
19t
25t
Ø 1-1/8
(28.58) to
Ø 1-3/4
(44.45)
32t
Ø 2
(50.80)
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.
Step 10 Installing the drain hose and
drain pipe
1
Push the supplied drain hose as far as possible over
the drain socket.
2
Tighten the metal clamp as shown in the picture.
3
Wrap the supplied large sealing pad over the metal
clamp and drain hose to insulate and fix it with
clamps.
4
Insulate the complete drain piping inside the building
(field supply).
If the drain hose cannot be sufficiently set on a slope,
fit the hose with drain raising piping (field supply).
5
Push the drain hose up to insulation when connecting
the drain hose to drain socket.
Metal clamp
Drain socket
Drain hose
Large seailng pad
Be sure to bond the drain
hose and the main pipe.
Drain pipe
Metal clamp
Drain socket
Drain hose
Drain pipe
Be sure to bond the drain hose
and the main pipe.
Large sealing pad
Summary of Contents for AM***NN4*CH Series
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