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DSU-4 Destratification Unit
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DSU Series Destratification Units

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DSU-4 Destratification Unit

DSU-4 Destratification Unit

  • The DSU Series Destratification Device reduces heating bills by up to 30% in industrial buildings with ceiling heights in excess of 4m
  • Applications include  warehouses, workshops and exhibition halls
  • Recycling warm  air that has collected at high level, the DSU range is effective for ceiling heights from 4m to 12m
  • A built-in thermostat means the Equaliser Destratification Device operates completely automatically
DSU-8 Destratification Unit

DSU-8 Destratification Unit

Rear view of DSU-4 destratification unit showing fan

Rear view of DSU-4 destratification unit showing fan

Rear view of DSU-8 destratification unit showing fan

Rear view of DSU-8 destratification unit showing fan

Range

Model Area Covered Recommended for Roof Heights
DSU-4  20m x 20m 4m to 7m
DSU-8  25m x 25m  7m to 12m

Technical Specification

Model: DSU-4
Recommended Mounting Height: 4 to 7m
Control: Built-in mechanical thermostat
Voltage Supply: 230V
Air Volume Flow Rate: 4000m³/h
Power: 150W
Amps: 0.65A
Mounting: Suspension (chains and hooks supplied)
Area covered: 20m x 20m
Ingress Protection: IP20
Dimensions: 560mm x 560mm x 265mm high
Weight: 16kg
Model: DSU-8
Recommended Mounting Height: 7 to 12m
Control: Built-in mechanical thermostat
Voltage Supply: 230V
Air Volume Flow Rate: 8000m³/h
Power: 270W
Amps: 1.7A
Mounting: Suspension (chains and hooks supplied)
Area covered: 25m x 25m
Ingress Protection: IP20
Dimensions: 720mm x 720mm x 270mm high
Weight: 23kg

Features & Benefits

Feature Benefit

Choice of fan outputs

Provides a 30% energy saving for buildings with roof heights between 4m and 12m

Built-in adjustable thermostat

Allows the temperature at which the fan is switched on to be matched with the required air temperature (generally thermostat set-point is required temperature + 3⁰C)

Robust Construction

Built to withstand the rigors of an industrial environment

4 x 500mm chains and associated hooks supplied as standard

Facilitates suspension

4-way adjustable louvres

Assists heat distribution and reduces draughts

Extensive warm air collection area

Reduces the number of destratification units required: one device can cover an area up to 25m x 25m

 

How it Works

The DSU destratification unit is not a heater.  It is a simple device specifically designed to ensure that the heat produced by fan heaters is not wasted.  Correctly selected and installed, a DSU Destratification Unit can reduce energy use and thus heating bills by 30%.

Fan heaters give rise to a very significant temperature gradient.  Typically air temperature will increase by 2.5⁰C for every metre above floor level.  This means that 5m high building when the temperature at floor level is 20⁰C, the temperature at high level will be 32.5⁰C.  This high temperature is expensive to generate and serves no useful purpose.

The DSU destratification unit will prevent this expensive waste of energy.  The unit’s built-in thermostat should be set at a temperature approximately 3⁰C higher than the required air temperature.  As soon as the thermostat set-point is reached the high powered fan will be automatically switched on.  The fan will scavenge warm air that has collected under the roof and return it to low level where it will contribute to the space heating requirement.

 

DEP-6 Board

Adjusting louvres



A DSU destratification unit is fitted with louvres, the angle of which can be adjusted to suit the mounting height.

 

 

 

 

DSU - Set of 4 chains and hooks

DSU - hooks and chains


Chains and hooks are provided to facilitate suspension.

 

 

 

Without DSU
Warm air accumulates at high level

 

With DSU
Warm air is recycled reducing
heating costs by up to 30%

 

 

 

 

 

 

We recommend that a DSU destratification unit is always installed in fan heated buildings with a roof height between 4m and 12m.

Selection

If you would like the experts at BN Thermic to select a suitable heating for your application, please click here to access our enquiry form.  Simply provide as much information as you have available and we will respond with a detailed proposal.

ENQUIRY FORM

 

Use the following selection guide

DSU destratification units should be used when

  1.  A building is heated by fan heaters
  2. The roof height is between 4m and 12m

In these circumstances one or more destratification unit should be suspended at high level.  The use of Equaliser Destratification Devices will reduce energy consumption by up to 30%.

 

There are two steps in the selection process

Step One – select DSU model

The correct equaliser model is determined purely by the height of the roof

Roof Height    Model
4m to 7m  DSU-4
7m to 12m  DSU-8

Step Two – quantity and distribution

The following table shows the area covered by DSU destratification units.  The objective is to cover the entire roof area.  Often only one DSU destratification unit is required but in larger buildings a number of devices should be evenly distributed.

Model  Area Covered
DSU-4 20m x 20m
DSU-8 25m x 25m

                          

                                 

                                 

DSU Series

Downloads

Instructions and specification sheets are available for BN Thermic’s entire range of products, including DSU Series Destratification Units.

DSU Series

Product Images

DSU-4 Destratification Unit

DSU-4 Destratification Unit

DSU-8 Destratification Unit

DSU-8 Destratification Unit

Rear view of DSU-4 destratification unit showing fan

Rear view of DSU-4 destratification unit showing fan

Rear view of DSU-8 destratification unit showing fan

Rear view of DSU-8 destratification unit showing fan

Installation Images

A DSU suspended in an electrical wholesalers.

A DSU suspended in an electrical wholesalers.

A DSU suspended with chains in a warehouse.

A DSU suspended with chains in a warehouse.

ENQUIRY FORM

Please provide as much information as possible

Industrial and Commercial Heating Enquiry Form

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Dimensions

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m
m

Glazing

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°C
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