Description
Grant Aerona3 Hot Water Priority Relay (2 CH Zone) *This Hot Water Priorty Relay is designed for systems with up to four zones and it gives hot water priority over the central heating system.
*Idealled suited for heating systems with two central heating zones for example, one upstairs and one downstairs
*This up to four zone hot water priority relay e bles the hot water demand to be prioritised over two central heating zones instead of one
*A Hot Water Priority Relay for one or two zones is also available from Grant UK – please refer to HPWPR1
