Installations

Natural ventilation does depend on providing adequate ventilation area for low-pressure flows driven by buoyancy and wind forces. The size of apertures required varies from space to space, and can be relatively large. However, natural ventilation units compare reasonably in terms of size with mechanical ventilation equipment such as ceiling-mounted cassette-type air conditioning units.

We provide an easy to follow installation guide with all our units, using either standard brackets or unistrut cradles.

No. The costs and challenges of ventilation vary from project to project, but natural ventilation can usually be a cost-effective option.

The e-stack unit itself can be either hidden within a ceiling void or bulkhead, or visible to the space. If visible to the space, the units can be painted to any standard RAL colour.

The system has its own controls hardware and software, which allows it to operate as a stand-alone system without BMS input. However, various degrees of interlinking to BMS systems can be realised. Our controllers can include optional MODBUS interface units to allow communication with other systems. This allows certain setpoints to be adjusted from the BMS system, as well as other facilities such as monitoring and logging via the BMS.

We are able to provide a maintenance service. For further details please contact us on 01223 450060.

No louvre system can ever be guaranteed to be 100% watertight under all weather conditions, the louvres that we use are very high performance in terms of rain rejection.  The louvre blades' weather performance has been tested in simulated rainfall of 75 litres/hr (equivalent to around 3 inches rainfall in an hour) at a wind speed of 13m/s (about 30mph) towards the louvre blades. The amount of rain which gets through the louvre is measured with no flow through the louvre, and with various amounts of air inflow through the louvre blades (measured as design air inlet velocities.) The E-Stack system operates with air inlet velocities typically under 1m/s when it acts as an air inflow pathway. Water repellent efficiency is described as a percentage of the incident rainfall.

Weather performance specifications are as follows for our louvre systems with insect screen fitted.

Water Repellent Efficiency (to nearest 0.1%) for various design air inlet velocities, v using our standard double-bladed louvre system.

v=0m/s, 99.9%

v=0.5m/s, 99.9%

v=1.0m/s, 98.9%

v=1.5m/s, class C (<95%)

v=2.0m/s, 87.9%

Water Repellent Efficiency (to nearest 0.1%) using a triple-bladed louvre system.

If a higher level of weather performance is required, a triple bladed louvre system can be supplied which (to nearest 0.1%) will provide 100.0% rain rejection for design air inlet velocities of up to 2.0m/s, under the same test conditions.

Once the units are installed, we attend site to install and test software to the system. This automatically adjusts the operation of the system seasonally and has been developed by drawing on our years of experience in natural ventilation.

However, every building behaves slightly differently, as a result of differences in construction, layout, location, orientation and operation. This can necessitate some initial alteration of setpoints during the first year of operation. We can provide options for seasonal performance evaluation and adjustment as required by the customer and/or end user.

The system needs a single phase 230V AC mains supply and requires site wiring to local peripheral devices (sensors, switches etc.) Typical wiring details can be supplied on request.

Installation is normally carried out by the mechanical and electrical subcontractor. Breathing Buildings supply an information pack describing the requirements for installation and provide CAD drawings of the equipment.

If required we will be happy to quote for the installation of our system. This will require appropriate equipment to be provided on site and can only be completed once all sensors have been wired into place.