Hitachi CH-AP04MSSX, Installation Manual

Page: 18 / 40

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
CH-AP08MSSX, CH-AP12MSSX and CH-AP16MSSX.
100
100
50
8
P5417025-rev.1
4.2 Initial Check
● Install the CH-Box with a proper clearance
around it for maintenance working space, as
shown in Figure 4.1 below.
Size
Model
A
CH-AP04MSSX
JCH-AP04MSSX
100
CH-AP08MSSX
JCH-AP08MSSX
400
CH-AP12MSSX
JCH-AP12MSSX
CH-AP16MSSX
JCH-AP16MSSX
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 CH-Box. If the ceiling is
weak, abnormal sound and vibration may occur.
● When the electronic expansion valve in the
CH-Box is activated, a change in the typical
refrigerant flow sounds may be heard or
perceived from the CH-Box. Take the following
action to minimize the sound.
(A) Install the CH-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 CH-Box in a place 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
CH-Box.
Therefore, install the CH-Box in the ceiling of
the corridor so that the refrigerant flowing sound
may not be heard in the room.
● Do not install the CH-Box in a hot or
humid place, such as a kitchen, to prevent
condensation on the outer surface of the
CH-Box.
When installing the CH-Box in such places,
apply additional insulation.
● Pay attention to the following points when the
CH-Box is installed in a hospital or other facility
where there are electronic waves from medical
equipment.
(A) Do not install the CH-Box where the
electromagnetic wave is directly radiated to
the electrical box or communication cable.
(B) Install the CH-Box and components as far
as practicable or at least 3m (10 ft) from the
electromagnetic wave radiator.
(C) Install a noise filter when the power supply
emits harmful noises.
● 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 CH-Box is required to move from the
ceiling, prepare another service access door.