Hitachi air core 600 Installation & Maintenance Manual page 26

3.2.3 Install the indoor unit.
The installation of the indoor unit is shown in Fig. 3.4.
Suspension bolts (4-M10 or W3/8)
( Field supplied )
Fig. 3.4 The installation of the indoor unit
(1) Secure the suspension bolts and the nuts
As shown in the figures 3.5. The nuts are fixed
using four bolts.
Nut
Indoor unit
Washer
Double nut
Fig. 3.5 Suspension bolts and nuts
(2) Install the indoor unit
·As shown in the following figure, place the left
hanger bracket on the nuts and washers of the
suspension bolts.
·Ensure that the left hanger bracket has been
fixed on the nuts and washers securely. install the
right hanger bracket suspension hook on the nuts
and washers.
(When installing the indoor unit, you can slightly
remove the suspension bolts.)
Hanger bracket
Double nuts
and washers
Fig. 3.6
3.2.4 Adjusting the unit level
(1) Ensure that the foundation is flat, taking into
account the maximum foundation gradient.
(2) The unit should be installed so that the drainage
side is slightly (0mm~5mm) lower than other sides
for adequate drainage.
Nuts and
washers (4-
M1 0 or W3/ 8)
(Field supplied)
Suspension bolt
Rack
Indoor unit
Installation and Maintenance
Fig. 3.7
(3) After the adjustment, tighten the nuts and apply the
thread locker on the suspension to prevent the nuts
from loosening.
CAUTION
(1) During the installation, please cover the unit with
plastic cover to keep it clean.
(2) Make sure that the unit is installed level by using a
level or a plastic pipe filled with water. Adjust the
top surface of the unit to the surface of the water
at both ends of the plastic pipe and adjust the unit
horizontally.(If the unit is installed so that the slope
is not in the direction of the drain piping, water
leakage may occur.)
3.2.5 Installing the duct
CAUTION
• Make sure the external static pressure of the unit is
within the range.
• Connect the duct and flange.
• Connect the duct and outlet flange.
• The connection of indoor unit and air duct must be well
sealed and kept warm with insulation material.
<Example>
Static pressure
box
Canvas flexible duct
Insulation material
Air-outlet
Horizon
The valve for the amount of air
24
Static pressure
box
Air inlet
Service mouth
(with filter)
(600mm×600mm)
The valve for
the amount of air
Outside air
(through
the filter)