Heat Pump Wiring Interface

The Grant EP002 heat pump interface box is designed to provide the volt free switching required by the Aerona³, using the heating and hot water switched live outputs from the heating system wiring centre.

This box can be installed next to the wiring centre. Alternatively, it can be located nearer to the Aerona³ heat pump, but not installed externally.

Refer to Section 6.10 for system control wiring diagrams, including the connection of the interface relay box.