Hello

Can anyone recommend a suitable control strategy / interface / controller for a DX coil on the supply air of a heat recovery unit.

The heat recovery unit has no control output or input of it's own (for the coil) and all the heat pump manufacturers i've looked at so far - MItsu, MHI, Daikin, Hitachi - can only supply an interface between a controller and the heat pump unit.

So i'm looking for a controller or control strategy that we can use to bring on both the air handling unit and also the heat pump for heating / cooling depending on the space temp.

The Mitsi Electric PAC-IF012B-E looks like a suitable interface and the expansion is already on the outdoor unit which will help us out, but it still requires a controller, i'm trying to avoid making up a panel.

Can anyone recommend something?

Thanks