Airflow

Pressure

K Circular Duct Fans

High Quality radial fan for circular ducts

Available with AC and EC motors
Indoor and outdoor installation
Reliable and airtight
Mounting bracket included
Noise and energy optimized impeller

Motor type

Duct diameter [mm]

K 150 EC sileo#88595

Frequency: 50/60 Hz

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Flexibility

The K fans are intended to use for supply or extract air, designed to be installed in any position. This ensures that the fans can be used in a variety of commercial and domestic applications.

Reliability

The unit’s airtight casing and corrosion resistance permits outdoor and indoor use. The combination of reliable casing and motor construction ensures, to minimize the need for maintenance of the fans and allows long continuous operation.

Performance

Sound optimized radial impeller together with high efficient external rotor motor are designed to ensure high-level performance to minimize power consumption and maximize efficiency.

Accessories

K fans can be selected together with variety types of accessories as fast clamps, heaters, filters, dampers, etc.

Systemair Accessories – the perfect match!

Save time in design and installation while ensuring the most optimal ventilation solutions for your project.

Explore benefits

Featured accessories for your K-fan

Mounting clamps for circular duct

ECBasic

Controller series with 0-10V analog output signal

LDC

Easily-fitted silencer for circular ducts where noise reduction is paramount

Certifications

Green Ventilation

Our very own environmental performance benchmark guides you toward the most sustainable solutions within our portfolio. Only products which meet a set of easily verifiable minimum requirements in terms of energy efficiency, indoor air quality, safety, and the like are entitled to receive the Green Ventiulation™ label.

Tech specs

Features

Construction

Casing made of galvanised sheet steel, corrosion class C3 is fully air tight class C according to EN1751. The fans are equipped with an external terminal box with protection class IP55.

Impeller

K fans use backward curved radial impellers. These are from lightweight, hard-wearing fiberglass reinforced polyamide, dynamically balanced and paired with corresponding external rotor motors.

Motor

Depending on type, K fans are equipped with AC or high efficient EC external rotor motors. All motors are suitable for 50Hz and 60Hz.

Motor protection

Fans with AC motors have integrated thermal protection with manual (electrical) reset. Size 100 and 125 has an impedance motor protection.

Fans with EC motors have an integrated electronic thermal protection including locked-rotor protection and soft-start.

Control

EC motor with built-in potentiometer to adjust working point can be also controlled by external signal 0-10V.

AC motor can be controlled by 5-step or stepless speed regulator.

Installation

K fans can be installed in any position indoor and outdoor by included mounting brackets . All models have a spigot with 25 mm length which is perfectly designed to connect circular duct by fast clamps preventing vibration to the duct.

Installation can be combined with filter boxes, sound attenuators, and other mechanical accessories from recommended list.

Technical Data

Article name

K 150 EC sileo

Trade name

Systemair

Article number

#88595

230V 1~ 50/60Hz
Nominal data
Voltage (nominal)	230	V
Frequency	50; 60	Hz
Phases	1~
Input power	84	W
Input power kW	0.084	kW
Input current	0.755	A
Impeller speed	3,293	rpm
Air flow	max 598	m³/h
Temperature of transported air	max 55	°C
Max temperature of transported air, when speed controlled	55	°C
Sound data
Sound pressure level at 3m (20m² Sabin)	42	dB(A)
Protection/Classification
Enclosure class, motor	IP54
Insulation class	B
Data according to ErP
ErP ready	ErP 2018
Dimensions and weights
Duct dimension; Circular, inlet	150	mm
Duct dimension; Circular, outlet	150	mm
Weight	3.3	kg
Others
Motor type	EC

Ecodesign

230V 1~ 50/60Hz
Product
Trade name	Systemair
Product name	K 150 EC sileo
Ecodesign
ErP compliance	2018
Unit category	NRVU
Drive	Integrated VSD
Unit type	UVU
Heat recovery type	None
Temperature ratio (UVU)	Not applicable
qv nom	0.0745	m³/s
P nom	0.084	kW
Ps nom	410	Pa
Fan efficiency	36.5	%
External Leakage	0	%
Sound power (LWA)	49	dB(A)
Basic unit
ErP compliance	2018
Unit category	NRVU
Unit type	UVU
Drive	Integrated VSD
Heat recovery type	None
Temperature ratio (UVU)	Not applicable
qv max	533	m³/h
P max	84	W
Sound power (LWA)	49	dB(A)
qv ref	0.103	m³/s
Ps ref	50	Pa
SPI	0.196	W/(m³/h)
CTRL	0.65
MISC	1.1
x-value	2
AEC average	245	kWh
AHS Cold	245	kWh
AEC warm	245	kWh
AHS Average	104	kWh/a
AHS Warm	104	kWh/a

Performance

Dimensions

ØA

286

ØB

149

202

152

Documentation

Documents

INSTALLATION OPERATION AND MAINTENANCE INSTRUCTION K KV PRIO EN 20250306 145834193

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COMMISSIONING RECORD FANS EN

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BIM

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Wiring

Terminal	Cable	Description
N	BU = Blue
L	BK/BN = Black or Brown
GND	GY = Green/Yellow
1	WH = White	Tacho output, Isink max 10mA
2	BU = Blue	GND
3	YE = Yellow	Control input 0-10 VDC/PWM
4	RD = Red	Output 10 VDC max 1.1 mA
Internal potentiometer is mounted (removable) on the terminal block from the factory. Remove the internal potentiometer when you use an external speed controller for the EC fan.