CV 250 A EC (Archived 20171124) | H. Östberg

CV 250 A EC (Archived 20171124) Updated: 2017-12-13

7110077 -

CV 250 A EC

Wall fan with circular inlet connections.
CV has a circular mounting plate.
Proven performance and reliability.
Compact with high capacity and efficiency.
Suitable for a wide variety of applications.
Impeller with backward curved blades.
The external rotor motor has maintenance-free sealed ball-bearings.
Junction box has enclosure class IP 54.
Speed controlling can be done with the built-in potentiometer, 0-10 V alt. external control.
Fan housing is manufactured from galvanized sheet steel.
The fan is intended to be installed in a duct system, mounted on the inside wall.
Easy installation in any position.
Can be used in damp environments.

Generating diagrams...

Variable control

User input

Air Flow (l/s)

External static pressure (Pa)

Data

Air Flow (l/s)

External static pressure (Pa)

Power (W)

Speed (r.p.m.)

Current (A)

Voltage (V)

230

Efficiency (%)

SFPv (kW/m3/s)

Change the "User input" by dragging the point, or by entering new values.

Generating diagrams...

	CV 250 A EC 7110077
Parameter	Value	Unit
Voltage	230	V
Phase	1	~
Frequency	50/60	Hz
Power	122	W
Current	0.96	A
Speed	2870	r.p.m.
Max. temperature of transported air	60	°C
Sound pressure level at 3 m	51	dB(A)
Weight	3.0	kg
Enclosure class	54	IP
Insulation class, motor	F
Duct connection	250	mm
Max. flow @ 0Pa	267	l/s
Max. pressure	445	Pa
Voltage range	220-240	V

Parameter	Value	Unit
(a) Manufacturer	Östberg	-
(b) Model code	CV 250 A EC (Archived 20171124)	-
(c) Declared type	NRVU / UVU	-
(d) Type of drive	Variable speed drive	-
(e) Type of HRS	N/A	-
(f) Thermal efficiency	N/A	%
(g) Nominal flow rate	0.158	m³/s
(h) Effective power input	122	kW
(i) SFP int	N/A	W/(m³/s)
(j) Face velocity	3.2	m/s
(k) Nominal external pressure	291	Pa
(l) Internal pressure drop	N/A	Pa
(n) Static efficiency	0.454	%
(o) External (and internal) leakage rate	N/A (N/A)	%
(p) Filter classification	N/A	-
(q) Visual filter warning	N/A	-
(r) Sound power level	58	dB LwA
(s) Disassembly instructions	www.ostberg.com	-