Systemair KVK Duo 250 EC Twin Duct Fan Single Phase - 250mm
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Delivery and Warranty
Standard UK Mainland Delivery
If you are not in a rush, then we offer standard delivery and your order should be with you between 2-3 working days.
£6.95
Next Working Day Delivery
Place your order before 12pm Monday to Thursday and receive your order the next working day. Orders placed on Friday before 11am will be processed and delivered on Monday. (Excludes Sunday’s and Public Holidays)
£15.95
Nominated Day Delivery
We know sometimes you will need an order on a particular date in the future. Simply select this option at checkout and add what date you would like to receive the order. We will then contact you to confirm the date. If you need to change this order date then please contact us ASAP.
£15.95
Northern Ireland Delivery
We offer a flat fee rate for Northern Ireland orders, and all are 5-7 working day lead times.
£29.95
Scottish Highlands & Islands Delivery
We only offer a flat fee rate for Scottish Highland & Islands orders, and all are 5-7 working day lead times.
£45.95
Channel Islands Delivery
We only offer a flat fee rate for Channel Islands orders, and all are 5-7 working day lead times.
£45.95
Product Details
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Specifications
Product specifications
| Brand | Systemair |
| Model | KVK Duo 250 EC |
| Type | Twin Run & Standby duct fan |
| Duct connection | 250 mm circular |
| Airflow (max) | 1152 m³/h |
| Motor | External-rotor EC, single-phase (230V); 0-10V control |
| Casing | AluZinc, fully insulated; IP65 terminal box (IP54 motor) |
| Max air temperature | +60°C |
| Warranty | 1 Year Manufacturer |
Summary
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The Systemair KVK Duo 250 EC is a twin Run & Standby duct fan with 250 mm circular connections, delivering up to 1152 m³/h. Two fans share one fully-insulated casing so ventilation continues without interruption if one motor stops.
- Twin fan – Run & Standby for non-stop operation
- Energy-efficient external-rotor EC motors
- 0-10V speed control; IP65 terminal box
- Fully-insulated AluZinc casing, low noise
- Suitable for external / roof installation as standard
- Safe and maintenance-free operation
Suitable for
- Applications requiring non-interruptive (Run & Standby) ventilation
- Commercial supply or extract of clean or contaminated air
Installation
Installs in any position, indoors or outdoors, on a single-phase (230V) supply. Connect to spiral duct using FK mounting clamps to prevent vibration transfer. Should be installed on a suitable circuit by a qualified electrician.
Specifications
| Brand | Systemair |
| Model | KVK Duo 250 EC |
| Type | Twin Run & Standby duct fan |
| Duct connection | 250 mm circular |
| Airflow (max) | 1152 m³/h |
| Motor | External-rotor EC, single-phase (230V) |
| Casing | AluZinc, fully insulated; IP65 terminal box (IP54 motor) |
| Max air temperature | +60°C |
| Warranty | 1 Year Manufacturer |
Manuals & Guides
Systemair KVK Duo 250 EC Datasheet
Systemair KVK Duo 250 EC Installation Guide
Product Description
The Systemair KVK Duo 250 EC is a twin Run & Standby duct fan with 250 mm circular connections, delivering up to 1152 m³/h. Two fans share one fully-insulated casing so ventilation continues without interruption if one motor stops.
- Twin fan – Run & Standby for non-stop operation
- Energy-efficient external-rotor EC motors
- 0-10V speed control; IP65 terminal box
- Fully-insulated AluZinc casing, low noise
- Suitable for external / roof installation as standard
- Safe and maintenance-free operation
Suitable for
- Applications requiring non-interruptive (Run & Standby) ventilation
- Commercial supply or extract of clean or contaminated air
Installation
Installs in any position, indoors or outdoors, on a single-phase (230V) supply. Connect to spiral duct using FK mounting clamps to prevent vibration transfer. Should be installed on a suitable circuit by a qualified electrician.
Specifications
| Brand | Systemair |
| Model | KVK Duo 250 EC |
| Type | Twin Run & Standby duct fan |
| Duct connection | 250 mm circular |
| Airflow (max) | 1152 m³/h |
| Motor | External-rotor EC, single-phase (230V) |
| Casing | AluZinc, fully insulated; IP65 terminal box (IP54 motor) |
| Max air temperature | +60°C |
| Warranty | 1 Year Manufacturer |
Manuals & Guides
Systemair KVK Duo 250 EC Datasheet
Systemair KVK Duo 250 EC Installation Guide
Delivery & Returns
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What is the KVK Duo 250 EC for?
It's a twin Run & Standby duct fan for applications needing non-interruptive ventilation – if one fan stops, the standby fan takes over.
How much air does it move?
Up to 1152 m³/h free-air through a 250 mm circular connection (one fan running).
How does Run & Standby work?
Two complete fans sit in one casing; a controller alternates duty or switches to the standby fan on failure, so ventilation is never interrupted.
What supply does it need?
It runs on a single-phase (230V) supply with an energy-efficient EC motor and 0-10V speed control.
Can it be mounted outdoors?
Yes – the insulated casing and IP65 terminal box suit external and roof mounting in any position.
Who should install it?
As a mains fan it should be installed by a qualified electrician using FK mounting clamps to connect to spiral duct.
