The WA range offers three wall mounted models with simple stainless steel cases providing a plentiful supply of boiling water. For customers who are working to a budget and want Instanta quality and reliability but with slightly lower specification and style. Designed for direct connection to a potable cold water supply using fittings supplied. An isolating valve should be installed between the supply and the heater. These wall mounted boilers have a rear connection and overflow and requires two bar incoming water pressure.