Lennox - 24M22 - SEE NEW PART # H6197 - Log set used on the MPB-3530. MPB-3530CNM-B, MPB-3530CPM-B, MPB 3530. MPB 3530CNM-B, MPB 3530CPM-B, MPB3530. MPB3530CNM-B, MPB3530CPM-B, MPD-3530. MPD-3530CNM-B, MPD-3530CPM-B, MPD 3530. MPD 3530CNM-B, MPD 3530CPM-B, MPD3530. MPD3530CNM-B & MPD3530CPM-B.