Systemair DHS Sileo 311EV Roof Fan AC Single Phase - 311mm
Systemair DHS Sileo 311EV Roof Fan AC Single Phase - 311mm
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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 | DHS 311EV Sileo |
| Type | Roof fan |
| Diameter | 311mm |
| Max airflow | 1739 m³/h |
| Phase | 1 Phase |
| Motor | AC |
| Power | 134 W |
| Voltage | 230V |
| Max temp / IP | 60°C / IP44 |
Summary
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The Systemair DHS Sileo 311EV is a 311mm centrifugal roof-mounted extract fan delivering up to 1739 m³/h. Its 3D profiled backward-curved impeller and external rotor motor move high air volumes at medium pressure with very low noise, well suited to exhaust ventilation on housing, offices and commercial buildings.
The 311EV runs on a single-phase 230V AC motor (EV, 4-pole 2-speed) with horizontal discharge and is fully speed controllable over the voltage. An integral thermal contact with manual reset protects the motor, the aluminium casing suits coastal applications, and it handles air up to 60°C at IP44.
- 1 Phase
- AC motor
- Up to 1739 m³/h
- Speed controllable
Specifications
| Brand | Systemair |
| Model | DHS 311EV Sileo |
| Type | Roof fan |
| Diameter | 311mm |
| Max airflow | 1739 m³/h |
| Phase | 1 Phase |
| Motor | AC |
| Power | 134 W |
| Voltage | 230V |
| Max temp / IP | 60°C / IP44 |
Manuals & Guides
Product Description
The Systemair DHS Sileo 311EV is a 311mm centrifugal roof-mounted extract fan delivering up to 1739 m³/h. Its 3D profiled backward-curved impeller and external rotor motor move high air volumes at medium pressure with very low noise, well suited to exhaust ventilation on housing, offices and commercial buildings.
The 311EV runs on a single-phase 230V AC motor (EV, 4-pole 2-speed) with horizontal discharge and is fully speed controllable over the voltage. An integral thermal contact with manual reset protects the motor, the aluminium casing suits coastal applications, and it handles air up to 60°C at IP44.
- 1 Phase
- AC motor
- Up to 1739 m³/h
- Speed controllable
Specifications
| Brand | Systemair |
| Model | DHS 311EV Sileo |
| Type | Roof fan |
| Diameter | 311mm |
| Max airflow | 1739 m³/h |
| Phase | 1 Phase |
| Motor | AC |
| Power | 134 W |
| Voltage | 230V |
| Max temp / IP | 60°C / IP44 |
Manuals & Guides
Delivery & Returns
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What size is the DHS 311EV?
It has a 311mm diameter and is a roof-mounted centrifugal extract fan.
What airflow does it deliver?
Up to 1,739 m³/h at free air from its 3D profiled backward-curved impeller.
Is the 311EV single or three phase?
It uses a single-phase 230V AC motor for a standard supply.
Can the speed be controlled?
Yes, the motor is speed controllable over the voltage with a compatible controller.
What air temperature can it handle?
It carries extract air up to 60°C and the motor is rated IP44.
Where is it typically used?
Exhaust ventilation on housing, offices and commercial buildings.