This PCB fits the following Potterton boiler models: • Potterton Puma 80 (SIT) (Natural Gas)  • Potterton Puma 80E (SIT) (Electronic version)  • Potterton Puma 100 (SIT) (Natural Gas)  • Potterton Puma 100E (SIT) (Electronic version)  • Potterton Combi 80  • Potterton Combi 100