The solenoid assembly is plumbed in on the water supply to the urinal cistern. The connection to the infrared sensor is made either by directly mounting the sensor module on to the solenoid or by using the ‘floating socket’ supplied for a remote mounting. If mounted remotely, the sensor module may be:
- Surface mounted using a standard pattress box.
- Recessed into a suspended ceiling using the ‘ceiling mounting kit’ (CMK), supplied with the IRC® as standard.
If the sensor detects no occupancy in 12 hours it will automatically open the valve for 30 minutes to allow one flush of the cistern to rinse the urinals and pipework.
The sequence is designed to maximise battery life, giving approximately 3 years’ life from one good quality set of batteries.
The flow rate of the water into the cistern is adjustable to maximise water economy. Generally this should be set so that the cistern flushes once every time the valve is opened. i.e. every 30 minutes during occupation.
The solenoid is supplied with an interchangeable valve seat which is used to increase the flow to the cistern on low pressure supplies.
The IRC® sensor unit is contained within a white moulded ABS case designed to fit directly on to the solenoid valve assembly or a standard 3.25” x 3.25” (83mm x 83mm) pattress box for surface mounting.
At the back there is access to the battery compartment or terminals for a 230V mains power supply to the integral and in-built transformer and the 6V DC output to the solenoid.
dimensions
85 x 85 x 63.5mm (W x H x D) including the sensor lens
range
approx 3.5m field of view, 138˚ horizontal, 125˚ vertical
solenoid voltage
6V DC nominal 54μA, peak 750mA, for 50ms
mains supply
220V – 240V 50hz 20mA
battery supply
4 x 1.5V Alkaline Type LR6 – Cap. 2700mAh
solenoid valve
6V latching valve, UK WRAS approved. One valve per sensor.
water supply
0.1-6 bar (For >6 bar a pressure reducing pressure valve is required). Integral, adjustable flow regulator and interchangeable valve seat.
