A typical domestic application on an unvented system to protect a combi boiler. The installation is on the rising main and should be close to the boiler. It will also protect other appliances throughout the home.

Plumbing System with Header Tank

A typical domestic application on a vented system. One unit is installed on the rising main to protect appliances under mains pressure and a second unit is sited on the CWDS to the calorifier. The back signal from this unit is normally adequate to serve the CWDS for the vented cold supply.

Close Coupled Vented Systems with Stored Water

Each dwelling has a close coupled vented tank and water heater. A WK can be fitted close to the vented tank and an aerial grounded to the water heater. The back signal will treat the other cold services. Alternatively the unit can be fitted to the hot outlet.

Mains Fed Unvented Gas Water Heaters

Rather than treating each residence with a dedicated unit, it can be as effective and less expensive to treat the common cold mains at the point of entry to the building with a single larger unit. Electric water heaters should be treated with dedicated units.