TKS 400 B1 | H. Östberg

TKS 400 B1 Updated: 2025-10-06

7210091 -

TKS 400 B1-v1 Black with cable

7210094 -

TKS 400 B1-v1 Brick red with cable

Roof fan with square connection.
Horizontal outlet.
High performance and proven reliability.
Operational in both 50 and 60 Hz.
Impeller with backward curved blades.
The external rotor motor has maintenance-free sealed ball-bearings.
Integrated motor protection.
Junction box has enclosure class IP 54.
For speed control a transformer or electronic speed controller can be connected.
Fan housing is manufactured from galvanized sheet steel which is polyester plastic coated in black as standard.
Swing-up design to simplify maintenance and cleaning of the impeller.
The easiest way to mount the roof fan is with a roof curb, TFU to TKS.
The fan complies with environmental requirement M2.
To comply with the ErP 2018 regulation, a local demand controller must be used.

Diagrams

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.

Sound data

Generating diagrams...

Technical Data

	TKS 400 B1-v1 Black with cable 7210091		TKS 400 B1-v1 Brick red with cable 7210094
Parameter	Value	Unit	Value	Unit
Voltage	230	V	230	V
Phase	1	~	1	~
Frequency	50	Hz	50	Hz
Optional frequency	60	Hz	60	Hz
Power	127	W	127	W
Current	0.57	A	0.57	A
Speed	2660	r.p.m.	2660	r.p.m.
Max. temperature of transported air	60	°C	60	°C
Max. temperature of transported air when speed controlled	60	°C	60	°C
Sound pressure level at 3 m	62	dB(A)	62	dB(A)
Weight	6.2	kg	6.2	kg
Enclosure class	44	IP	44	IP
Insulation class, motor	F		F
Capacitor	4	µF	4	µF
Max. flow @ 0Pa	228	l/s	228	l/s
Max. pressure	458	Pa	458	Pa
Voltage range	220-240	V	220-240	V

Product information sheet

Parameter	Value	Unit
(a) Manufacturer	Östberg	-
(b) Model code	TKS 400 B1	-
(c) SEC average climate	-26.2	kWh/m²
SEC average climate, class	B	-
SEC warm climate	-10.7	kWh/m²
SEC warm climate, class	E	-
SEC cold climate	-53.3	kWh/m²
SEC cold climate, class	A+	-
(d) Declared type	RVU / UVU	-
(e) Type of drive	Multi-speed drive (accessory)	-
(f) Type of heat recovery	N/A	-
(g) Thermal efficiency	N/A	%
(h) Max. flow rate (@100Pa)	698	m³/h
(i) Power at max. flow rate	125	W
(j) Sound power level	66	dB LwA
(k) Reference flow rate	0.154	m³/s
(l) Reference pressure difference	50	Pa
(m) SPI	0.13	W/(m³/h)
(n) Type of control/ctrl factor	Local demand control(accessory)/0.65	-
(o) External (and internal) leakage rate	N/A (N/A)	%
(p) Mixing rate	N/A	-
(q) Visual filter warning	N/A	-
(r) Instruction supply/exhaust grilles	See manual	-
(s) Disassembly instructions	fsp.ostberg.com	-
(t) Airflow sensitivity	N/A	-
(u) Air tightness	N/A	m/s
(v) AEC	206	kWh
(w) AHS average	2830	kWh
AHS warmer	1280	kWh
AHS colder	5536	kWh

Wiring Diagram

Dimensions

Accessories

Mechanical accessories

Electrical accessories

Downloads

Manuals

EU Declarations

EU Declaration Fans u10_eng.pdf

Product Declarations

3D drawings

Diagrams

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.

Sound data

Generating diagrams...

Technical Data

	TKS 400 B1-v1 Black w cable 7210091 (50)/60Hz		TKS 400 B1-v1 Brick red w cable 7210094 (50)/60Hz
Parameter	Value	Unit	Value	Unit
Voltage	230	V	230	V
Phase	1	~	1	~
Frequency	60	Hz	60	Hz
Optional frequency	50	Hz	50	Hz
Power	169	W	169	W
Current	0.74	A	0.74	A
Speed	2700	r.p.m.	2700	r.p.m.
Max. temperature of transported air	60	°C	60	°C
Sound pressure level at 3 m	62	dB(A)	62	dB(A)
Weight	6.2	kg	6.2	kg
Enclosure class	44	IP	44	IP
Insulation class, motor	F		F
Capacitor	4	µF	4	µF
Max. flow @ 0Pa	258	l/s	258	l/s
Max. pressure	631	Pa	631	Pa
Voltage range	220-240	V	220-240	V

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