sensazone

sensazone is an intelligent PIR sensor which controls the water flow to the washroom with solenoid valves.

The sensor is ideally located at the entrance to the washroom. The solenoid valve(s) should be located at the entry point of the water supply to the washroom or as close as practically possible to the entry point to suit the pipe layout.

How it works

On detecting movement the sensor sends a pulse to open the solenoid valve(s). After the pre-set run-on time (15 or 30 mins) the sensor will send a second pulse to close the valves.

When activated the LED will flash green once every 3 seconds and continues to do so for the full run-on duration. This indicates the valves are open.

The sensor will continue to search for occupancy while the valve(s) are open: if a user is detected, the timers are reset to zero.

If there has been no use of the washroom for 12 hours, sensazone will automatically complete a hygiene rinse function / flush cycle. This is repeated every 12 hours.

Eliminates the costs and waste associated with defective washroom outlets or vandalism

If a washroom outlet is defective or tampered with, water from the mains or central supply can pass uncontrolled through the outlet valves such as taps or WCs. This waste of water can often pass undetected and cause considerable costs (see table). As the sensazone controls the flow of water into the washroom area at the entry point, the water is prevented from passing uncontrolled through the damaged outlet, which eliminates the risk of water wastage or flooding during vacant periods.

The calculations above are based on a defective WC cistern valve which is allowing water to pass through a WC at different rates during periods of non-use. Cistermiser has quantified these varying rates and calculated the potential water and financial losses.

* Based on average water costs of 2.33 per m³ (Ofwat 2008-2009)

Installation Options

• The sensazone sensor should be located at a minimum distance of 1 metre from the entrance to the washroom area.
• The sensitivity of sensazone can be increased to ensure that all users of the washroom area are detected. This feature is particularly applicable in an environment such as a primary school where the presence of the users such as young children, may be more difficult to detect with the normal sensitivity setting. In most applications the default setting offers effective detection.
• The sensazone can be configured either manually or via the hand held remote control Infrared Configuration Unit (ICU) which is available as an optional extra.

Valve & sensor installation

Valve Installation
The valve should be installed on the water supply leading into the washroom (hot, cold, rain or grey) or as close as practically possible to the entry point to suit the pipe layout.

Sensor Installation
The sensazone can be installed on both false and solid ceilings. The following is a brief explanation of the installation options. Comprehensive set-by-step instructions are available from Cistermiser and come with the product.

False ceiling
The base plate is secured directly onto the surface of the ceiling. The wiring passes through a pre-drilled opening in the surface into the ceiling void. The sensor unit then attaches directly to the base plate.

Solid ceiling
The base plate is secured directly to the solid surface. The wires should be routed through the 'wire exits' and run across the ceiling surface as required. The sensor unit then attaches directly to the base plate.

  Installation information [PDF Document]