Hitachi DSP-110A6N User Manual

45
5. INSTALLING AND PIPING [Ventilation of Air Compressor Room]
Technical Data for Room Ventilation
Model
Item/Unit
DSP-
90A6N
DSP-
110A6N
DSP-
90VA6N
DSP-
100VA6N
Heat Generation
KBTU 408 472 417 484
(MJ/h) (430) (498) (440) (510)
Air Exhaust
cfm 8,830 9,535
(m
3
/min) (250) (270)
Approximate Temperature
Rise (exhausted air)
°F 47 50 45 50
(℃) (26) (28) (25) (28)
Allowable Pressure Loss
(exhaust duct)
inchAq 0.08
(Pa) (20)
Recommended
Ventilating Fan ①
cfm 40,260 46,620 41,320 47,680
(m
3
/min) (1,140) (1,320) (1,170) (1,350)
Recommended
Ventilating Fan ②
cfm 9,890 10,600
(m
3
/min) (280) (300)
① Air intake opening
Provide the air compressor room with an enough air
intake opening that:
- is positioned as low as possible on the wall.
- is located in an environment free of external dust
and harmful material.
② Ventilation without Duct (Fig. A)
For ventilation without an exhaust duct, install a
ventilating fan with the specified capacity shown in
the Recommended Ventilation Fan ① or more
row in the lefttable. The specified capacity is based
on the allowable room temperature rise of 9°F (5℃).
Position of the ventilating fan is as high as possible
on the wall.
③ Ventilation with Duct and without Ventilating
Fan (Fig. B)
● For ventilation with an exhaust duct, calculate the
duct’s pressure loss based on information shown in
the Air Exhaust (Air Compressor) row in the table.
If the calculated pressure loss is less than 0.08
inchAq (20 Pa), a ventilating fan is not required on
the duct. Install the duct with its detachable end
directly in contact with the grilled air exhaust on top
of the air compressor.
● If the calculated duct’s pressure loss is 0.08 inchAq
(20 Pa) or larger, a ventilating fan is required on the
duct. Install the duct, keeping a gap “h” of 8 to 12
inches (200 to 300 mm) between the duct and the
grilled air exhaust on top of the air compressor. On
the other end of the duct, install a ventilating fan with
the specified capacity shown in the Recommended
Ventilation Fan ② or more in the lefttable. (Fig. C)
● Pay attention to the duct opening location. Noise
may be transmitted to outside through the duct.
Provide the noise absorbing material inside the duct
if required.
air exhaust
(air compressor)
Exhaust
Duct
h
Fig. A Fig. B Fig. C
Exhaust
Duct
Exhaust air
Exhaust air
Exhaust air
Shall be
removable.
Ventilating fan
See “Recommended
fan capacity ①” in
the table.
Ventilating fan
See “Recommended
fan capacity ②” in
the table.
A
ir intake
opening
Air intake
opening
Air intake
opening
Ventilating fan
See “Recommended
fan capacity ③” in the
table.
5.5.1 Air-Cooled model
Air-Cooled
5.5 Ventilation of Air Compressor Room
● Stop the ventilating fan when the air compressor has
stopped.
● The ventilating fan should be running while the air
compressor is operating. If the ventilating fan is not
running, the loss of air flow may reduce the performance
of the cooler.
●
The duct should be detachable for ease of maintenance
on the air compressor.
CAUTION
Provide a ventilating system to the air
compressor room in the event that the room
temperature exceeds the allowable ambient
operating temperature of 104°F (40°C).
Operating the air compressor at an ambient
operating temperature above 104°F (40°C) may
cause a serious problem.
IMPORTANT

Hitachi DSP-110A6N Specifications

General

Brand	Hitachi
Model	DSP-110A6N
Category	Air Compressor
Language	English