Quick view Compare Viessmann Adapter KF 8852 for LFI/LGB 21 Landis & Gyr, Viessmann, 7815422 MSRP: Was: Now: €0.00 Viessmann 7815422 Adapter KF 8852 for LFI/LGB 21 Landis & Gyr Manufacturer No.: 7815422