The Grant Aerona3 Hot Water Priority Relay is a two-channel zone relay designed for heating systems with two central heating zones. This relay prioritises hot water demand over the two central heating zones, ensuring you always have hot water when you need it.

Product Features:

• Hot Water Priority: Prioritises hot water demand over two central heating zones.
• Two-Channel Zone Relay: Suitable for heating systems with two central heating zones.
• Compact Design: Measures 159mm in height, 155mm in width, and 155mm in depth.
• Lightweight: Weighs only 0.52kg.

The Grant Aerona3 Hot Water Priority Relay is a reliable and efficient solution for ensuring hot water priority in your heating system.