» Aqua-PIR:

The AquaPIR WC Occupancy Water Shutdown System is an automatic water shut-off system for when WCs and washrooms are not in use. It helps to prevent flooding and therefore can save on water. The system is BREEAM compliant to BREEAM criteria W04.

The AquaPIR module is ceiling surface mounted to a standard pattress box or can be supplied with on optional slimline single gang housing. The AquaPIR has a sensing footprint of 5m diameter and should be located centrally to the washroom. The extremity of monitoring can be up to 7m and therefore a single AquaPIR would normally be adequate for a typical washroom. For larger washrooms, additional AquaPIRs need to be added, and these should be wired in parallel. 

If the system is being used to control lighting, or monitoring of open plan areas, then the AquaPIR should be spaced at 5m intervals in all directions. The AquaPIR detects movement of a body passing through the detection zone. The sensitivity is adjustable. It also has adjustable time lag before switch-off if no movement is detected; adjustable 10 seconds to 40 minutes. In addition, the AquaPIR is fitted with daylight override feature to prevent the the lights coming on when there is sufficient daylight.

The AquaPIR module controls a matched Solenoid Valve fitted in the water supply pipework on entry to the washroom. Connections are by standard mains rated cable. The system can be supplied with 1/2", 3/4" or 1" Solenoid Valve, - other valves to order. The Solenoid valve is off while the washroom is unoccupied and opens when the AquaPIR detects movement. Following the 'time lag' period, the AquaPIR will switch the valve off again. The valve will remain shut until the AquaPIR activates it again.