VENTS Boost-I 250

Description
Characteristics
Downloads
Dimensions
Additional characteristics
Designation key

Description

APPLICATION
The inline VENTS Boost-I fans are enclosed in a specially designed sound-insulated casing that ensures silent fan operation in combination with high aerodynamic characteristics. The fans are compatible with round air ducts from Ø 200 up to 250 mm. The VENTS Boost-I fans combine wide capabilities and high performance characteristics of both axial and centrifugal fans, thus providing powerful air flow and high pressure.	The VENTS Boost-I fans are recommended as a component of the air handling systems for various commercial and industrial premises with high requirements to noise level, i.e. libraries, conference halls, educational institutions, kindergartens, etc.
DESIGN
The external casing is made of galvanized steel. Sound and heat insulation is provided by 30 mm acoustic material. Due to the improved mixed type impeller, which is a hybrid of axial and centrifugal impeller, the Boost-I has low power consumption and noise level with high performance.	The specially designed diffuser, impeller and airflow rectifier at the fan outlet provide smooth air flow distribution and enable the best combination of high air flow, increased pressure and low noise. The fan casing is equipped with an airtight terminal box for connection to power mains.

MOTOR
The VENTS Boost-I fans are equipped with single-phase high-efficiency three-speed asynchronous motors with low power consumption. The motor is equipped with thermal switches for overheating protection.	The ball bearings ensure a long service life (about 40 000 hours of continuous operation). The motor ingress protection rating is IPX4.
SPEED CONTROL
The three-speed motor can be controlled using a builtin switch (option V) or an external switch P3-5.0 (purchased separately).
MOUNTING
The fans are designed to be used with round air ducts. The fan casing has mounting brackets for convenient installation onto the ceiling. The ducts can be fitted at any angle relative to the fan axis. Make sure to provide sufficient maintenance access during fan installation.	Electrical connection and installation must be performed in accordance with the instruction manual and the electrical connections diagram applied to the terminal box. A single system may have several fans installed in parallel to boost the output capacity or in series to boost the working pressure.

Characteristics

Parameter	Boost-I 250 min	Boost-I 250 mid	Boost-I 250 max	Measurement unit
Frequency	50	50	50	Hz
Speed	min	mid	max	-
Voltage	230	230	230	V
Phase	1	1	1	˜
Current	0.7	0.81	0.84	A
Maximum air capacity	280	390	464	l/s
Air capacity	1007	1404	1670	m³/h
Power consumption	144	173	188	W
EC motor	no	no	no	-
Maximum air capacity	1007	1404	1670	m³/h
RPM	2292	2626	2876	min^-1
Sound pressure level at 3 m	38	43	45	dBА
Protection rating	IP X4	IP X4	IP X4	-
Design	mixed-flow	mixed-flow	mixed-flow	-
Motor protection rating	IP 20	IP 20	IP 20	-
Duct diameter	250	250	250	mm
Transported air temperature	-25 ... +55	-25 ... +55	-25 ... +55	°С
Casing material	galvanized steel	galvanized steel	galvanized steel	-
Weight	9.5	9.5	9.5	kg
Outdoor mounting	no	no	no	-
Sound-insulated casing	yes	yes	yes	-
Duct	for round air ducts	for round air ducts	for round air ducts	-
Type	supply and exhaust	supply and exhaust	supply and exhaust	-
Mounting	Inline	Inline	Inline	-

Files archieve

Downloads

Dimensions

Characteristics

Parameter	Value	Measurement unit
∅D	249	mm
∅D1	337	mm
B	389	mm
L	601	mm
L1	739	mm

Additional characteristics

Sound power level [A-filter]											Sound pressure level at a distance of 3 m [A-filter]	Sound pressure level at a distance of 1 m [A-filter]
Sound power level		General	Octave frequency band [Hz]								Sound pressure level at a distance of 3 m [A-filter]	Sound pressure level at a distance of 1 m [A-filter]
	Hz	General	63	125	250	500	1000	2000	4000	8000	LpA, 3 m dBA	LpA, 1 m dBA
L_wA to inlet	dBA	70	45	56	62	64	63	60	62	57	49	59
L_wA to outlet	dBA	71	41	49	61	64	67	65	60	54	51	61
L_wA to environment	dBA	65	57	55	60	58	55	54	47	39	45	55

Designation key

Series	Air duct diameter	Options
VENTS Boost-I	200; 250	Т: turn-off delay timer adjustable from 2 to 30 minutes. U: speed controller with an electronic thermostat and a temperature sensor integrated inside an air duct. Temperature-based operation logic. Un: speed controller with an electronic thermostat and a temperature sensor fixed on a 4-meter cable. Temperature-based operation logic. R: power cord with a mains plug. V: three-position speed switch.