Unit: mm
Service Space
Service Access Door 1 (*)
Electrical Box
( 450)
Service Access Door 3
Min. 300
Upper Side
Bottom Side
Min. A
Min. 100
Min. 500
Min. 100
4-Suspension Bolt
M10 or W3/8
(Field-Supplied)
Service Access Door 2
( 450)
( 450)
100
50
* Service access door 1 is required for models
HCHM-N04X, HCHM-N08X, HCHM-N12Xand HCHM-N16X.
100
100
50
4.2
Initial
Check
●
Install the
Switch Box
with a proper
clearance
around it for maintenance working
space, as
shown in Figure 4.1 below.
Size
Model
A
HCHM-N04X
Min.100
HCHM-N08X
Min.
400
HCHM-N12X
HCHM-N16X
Purpose
of
Each
Service
Access
Door
Name
Purpose
Service
Access
Door
1
Use
during
inspection
of
indoor
unit
connecting
side.
Service
Access
Door
2
Use
during
inspection
of
indoor
unit
connecting
side.
Service
Access
Door
3
Use
during
inspection
of
electrical
components
inside
electrical
box.
Figure
4.1
Service
Space
●
●
Check to ensure that the ceiling is sufficiently
strong to sustain the
Switch Box
. If the ceiling
is
weak, abnormal sound and vibration may
occur.
When the electronic expansion valve in the
Switch Box
is activated, a change in the typical
refrigerant flow sounds may be heard or
perceived from the
Switch Box
.
T
ake the
following
action to minimize the sound.
(A)
Install the
Switch Box
inside the ceiling.
As
for
the ceiling material, select a material like
a
plasterboard at least 9mm (1 inch), which
minimizes operation sound.
(B)
Do not install the
Switch Box
in a plac
e
near
bedrooms or hospital rooms.
●
When the operation is changed to cooling/
heating mode, a change in the typical refrigerant
flow sounds may be heard or perceived from the
Switch Box.
Therefore, install the
Switch Box
in the ceiling
of
the corridor so that the refrigerant flowing
sound
may not be heard in the room.
●
Do not install the
Switch Box
in a hot or
humid
place, such as a kitchen, to prevent
condensation on the outer surface of the
Switch
Box.
When installing the
Switch Box
in such places,
apply additional insulation.
●
Pay attention to the following points when the
Switch Box
is installed in a hospital or other
facility
where there are electronic waves from
medical equipment.
(A)
(B)
(C)
Do not install the
Switch Box
where the
electromagnetic wave is directly radiated to
the electrical box or communication cable.
●
Ensure the installation place is convenient
for the refrigerant piping or electrical wiring
connection.
●
Do not drill, or drive screws into the cabinet.
Use
only mounting points provided.
●
In case the
Switch Box
is required to move from
the
ceiling, prepare another service access door.
Install the
Switch Box
and components as
far
as practicable or at least 3m (10 ft)
from the
electromagnetic wave radiator.
Install a noise filter when the power supply
emits harmful noises.
8
Summary of Contents for HCHM-N04X
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