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VBP

ASSISTANCE FAN FOR HYBRID VENTILATION

Optimising the performance of passive stack ventilation

Installed at the top of a ventilation duct, the VBP hybrid fan guarantees a satisfactory airflow all year long on a former natural ventilation installation. By creating additional pressure when the natural draught is not sufficient, as may sometimes happen in warm and hot weather, the VBP hybrid fan optimises the working of natural ventilation while leaving its dimensions unchanged (ventilation exhaust units and air ducts). Its patented principle is specially designed to allow both mechanical and natural exhaust modes: the exhaust fan can works at very low speed when the stack effect is sufficient without creating any pressure loss. Its motor speeds up when the temperature increases, to compensate for a potential loss of stack effect. With a consumption of only a few Watts per dwelling, the VBP hybrid fan is an excellent alternative to mechanical exhaust ventilation and natural ventilation. Its sizing makes it suitable for apartment blocks up to 7 storeys.

CONTACT-US

Hybrid working: does not interfere with natural ventilation when stopped / at very low speed.

Not critical: allows natural ventilation if the fan stops.

Low energy consumption: only 16 W at 300 m³/h.

Constant pressure: fitted to demand controlled ventilation.

Adapts to weather conditions: management system (MS version) with temperature sensor.

Easy to install: on natural ventilation ductwork (renovation or new building).

Low maintenance: low air speed = less dust accumulation.

Description

Characteristics

Schematic

Accessories

Gallery

Documents

Unique design for operation in passive stack ventilation

With its unique design, the VBP does not induce any pressure loss when stopped: its central blades are parallel to the airflow, and static paddles located outside the vertical airflow generate the pressure in operation. This allows normal operation of the passive stack ventilation when the fan is off.

Management system

In the MS version (management system), the VBP is wired to a box which controls the simultaneity of operation and the power of several fans. The device also controls fan speeds according to the outdoor temperature or wind speed (different versions).

Thermal protection against extreme cold

Available as an accessory, polystyrene thermal insulation protects the VBP motor from freezing in very cold climates.

Assistance exhaust fan		VBP st	VBP ms
Standard code		VBP042 VBP318*	VBP043 VBP331*
Airflow characteristics
Max. airflow	m³/h	400	400
Pressure @ 400 m³/h	Pa	17 Pa @ 12V	14 Pa _{[1 VBP / 5-7 levels]}
Acoustics
Sound pressure level Lw @ 9 V	dB(A)	46	46
Electrics
Power supply		from 8 VDC to 12 VDC	12 VDC + management system
Max. current	A	1	1
Motor type		EC (Electronic commutation)	EC (Electronic commutation)
Power @ 300 m³/h – 12 V	W	16	16
IP degrees of protection		IP54	IP54
Characteristics
Weight	kg	5.5	5.5
Colour		black	black
Material (envelope)		PAA 66 35% G.F.	PAA 66 35% G.F.
Dimensions	mm	612 x ø350	612 x ø350
Installation
Max. available duct connections		1	1
Outlet	mm	ø240	ø240
Terrace installation, head of the air duct	mm	■	■
Operation
Direct-drive impeller		■	■
Max. speed	RPM	1000	1000
Accessories
Management box** with temperature sensor for up to 3 fans (ref. AVE197)		–	◊
Management box** with temperature sensor for up to 6 fans (ref. AVE198)		–	◊
Wind gauge + special management box		–	compatible

■: standard
◊: mandatory
* Delivered with rain protection (clipped to the top of the VBP hybrid fan)
** Checks that all VBP hybrid fans connected are simultaneously in working order, and manages the power according to the temperature

AIRFLOW /DIMENSIONS IN MM

IMAGE	CODE	DESIGNATION
	VBP070	VBP Thermal protection shell – set for 1 VBP hybrid fan
	VBP335	VBP Rain protection – set for 1 VBP hybrid fan
	VBP447	VBP Rain exhaust sleeve for VBP fan
	AVE197	VBP Complete supply and control box for VBPms hybrid fan (from 1 to 3 VBPms)
	AVE198	VBP Complete supply and control box for VBPms hybrid fan (from 4 to 6 VBPms)
	AVE347	VBP Wind gauge for VBPms hybrid fan (need special CCP ref. AVE348 and DCP ref.AVE349)