The EP002 is Grant's air source heat pump interface box

• Designed to provide the volt free switching required by the Aero ³, 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 or alternatively, it can be located nearer to the Aero ³ heat pump, but it must not be installed externally
• Available to order individually or as part of Grant's Heat Pump Installation Pack C