Water-Cooled Type - Hitachi NEXT Series Instruction Manual

5. INSTALLING AND PIPING [Ventilation of Air Compressor Room]
CAUTION
When installing exhaust ducts, install a single
duct for each compressor. Alternatively, when
installing a collecting duct for multiple
compressors, install it as shown in Fig. C.
Also, be sure to install a ventilating fan with a
capacity of the value of "exhaust air from the
compressor x quantity" or more on the other
end of the duct.

5.5.2 Water-Cooled Type

① For the small air compressor room installation,
install a ventilating fan and an air intake opening.
The position of the ventilating fan is as high as
possible and the position of the air intake opening is
as low as possible on the wall.
Select a ventilating fan with required capacity
specified in the table or higher (Fig. A). Also ensure
that the flow rate at the air intake opening is 2 m/s
or lower.
Technical Data for Room Ventilation
Model
Item/Unit
KBTU
Heat
Generation
(MJ/h)
cfm
Recommended
fan capacity ①
(m /min)
3
The specified capacity is based on the allowable room
temperature rise of 9°F (5℃) and static pressure is zero 0 psi
(0 MPa).
② For the factory installation with enough ventilation
capacity, select a well ventilated area (Fig. B).
46
Water-Cooled
DSP-90W6N DSP-110W6N
DSP-90VW6N DSP-110VW6N
46 53
(49) (56)
4,590 5,300
(130) (150)
Ventilating
fan
See "Recommended
fan capacity" in the
table.
Exhaust air
Air inlet
Fresh
air
Fig. A
Exhaust air
Air inlet
Fresh
air
Fig. B
Exhaust air
Exhaust air