def findequipmentconnection(idf, zone):
    """return ZONEHVAC:EQUIPMENTCONNECTIONS object for this zone
        
    Returns None if the zone does not have a ZONEHVAC:EQUIPMENTCONNECTIONS object

    Parameters
    ----------
    idf: eppy.modeleditor.IDF
        this idf model
    zone : eppy.bunch_subclass.EpBunch
        the zone you are checking for exhaust (type ZONE)

    Returns
    -------
    equip_connections: eppy.bunch_subclass.EpBunch
        ZONEHVAC:EQUIPMENTCONNECTIONS object for this zone
    
    """
    econs = [
        con
        for con in idf.idfobjects["ZoneHVAC:EquipmentConnections"]
        if con.Zone_Name == zone.Name
    ]
    if econs:
        return econs[0]
    else:
        return None