Hitachi air Core 600 Installation & Maintenance Manual page 29

● Select the installation location as shown in Fig 3.2:
(A) Minimum Clearance
(B) Down Slope Pitch of Drain Piping:1/25～1/100
● Consider the air distribution from the indoor unit to the space of the room, and select a suitable location so that
uniform air distribution can be achieved in the room. It is recommended that the indoor unit is installed
8 ft. (2.5m) to 10 ft. (3m) from the floor level.
● Do not install flammable items in the service space for the indoor unit.
● Avoid obstacles which may obstruct the air intake or the air discharge flow.
● Do not install the indoor unit in a machine shop or kitchen where oil vapor or mist flows through the indoor unit.
The oil will deposit on the heat exchanger, thereby reducing the indoor unit performance, and in severe cases,
damaging the indoor unit.
● Pay attention to the following points when the indoor unit is installed in a hospital or other facilities with
electromagnetic waves from medical equipment:
(A) Do not install the indoor unit where the electromagnetic wave is directly radiated to the electrical box,
remote control cable or remote control switch.
(B) Install the indoor unit and components at least 10 ft. (3m) from the electromagnetic wave source.
(C) Install the remote controller within a field provided and installed steel box. Prepare a steel case and install
the remote control switch in it. Install remote controller wire with a steel electric conduit. Connect a ground
wire to both the box and the tube.
(D) Install a noise filter when the power supply emits harmful noises.
● To avoid any corrosive chemical reaction at the heat exchanger, do not install the indoor unit in an acid or alkaline
environment. If the indoor unit has to be installed in such environments, use corrosion-proof type unit.
Ensure that the below calculated number is within a concentration of refrigerant gas higher that
0.3kg/m
3
in an enclosed space is harmful and can cause injury.
3/8 in. to 3/4 in. (10mm to 20mm)
a+28
3
27
Installation and Maintenance
36K/42K/48K/55K
≤
0.3 kg/m³
the
a(mm)
Model
18K/25K/30K 236
272