Vents VKHz 4E 250

Roof centrifugal fans with horizontal air discharge

	Unit of measurement	VKHz 4E 250
Phases	-	1
Minimum supply voltage	V	230
Maximum supply voltage	V	230
Power supply frequency	Hz	50
Rated power	W	48
Unit current	A	0.23
Maximum airflow	m³/h	820
Rotation speed at 50hz	-	1440
Sound pressure level LpA at 3 m	dB(A)	46
Weight	kg	12.1
Transported air temperature (max)	°С	50
Transported air temperature (min)	°С	-25
Ingress protection rating	-	IPX4
Ingress protection rating of the drive	-	IP44
Impeller material	-	Plastic
Size	mm	250

Trademark	Vents
Model	VKHz 4E 250
Specific energy consumption (SEC) (kWh/(m²/a))	Cold		Average		Warm
	-53.4	A+	-26.4	B	-10.9	E
Type of ventilation unit	Unidirectional
Type of drive installed	Variable speed
Type of heat recovery system	None
Maximum flow rate (m³/h)	460
Electric power input (W)	47
Reference flow rate (m³/s)	0.089
Reference pressure difference (Pa)	50
Specific power input (SPI) (W/(m³/h))	0.146
Control typology	Local demand control
Maximum external leakage rates (%)	2.7
Sound power level (dB(A))	66
Declared typology	RVU UVU
The annual electricity consumption (AEC) (kWh/a)	Cold		Average		Warm
	77		77		77
The annual heating saved (AHS) (kWh/a)	Cold		Average		Warm
	5536		2830		1280

Datasheet

"VENTS VKV, VKH" product description 10-2025

1.93 Mb

Manual

"VENTS VKV, VKH" user's manual 11-2025 (V204EN-02)

6.12 Mb

Image

VKHz 4E 250 - image 1

382 Kb

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237	244	451	450	330	11	285

Accessories for roof fans

Name	Photo	Description
Vents RKV 250-315		Mounting frame
Vents RKVI 250-315		Mounting frame with thermal-insulating layer
Vents FKV 250-315		Mating flange
Vents GKV 250-315		Flexible connector
Vents KKV 250-315		Backdraft damper