Aerona? Hot Water Priority Relay (2 CH Zone)

The Hot Water Priority (up to two space heating zones) Relay gives hot water priority over the central heating system ? it allows the cylinder to fill with hot water when there

is a hot water demand and when this is satisfied, the relay allows the heat pump to return to providing space heating. The Hot Water Priority (up to four space heating zones) Relay is for use on heating systems with two central heating zones, such as one upstairs and one downstairs ? this up to four zone hot water priority relay enables the hot water demand to be prioritised over two central heating zones instead of one