Magnaclean magnetic heating system Posted on August 5, 2017 by admin Magnaclean magnetic cleaners are very benefi when converting a open vent heating system into a combi system , they protect the main heat exchanger from metal debris . The powerfull magnet inside the F1 unit sticks the metal waste to the inside of tbe unit then can be removed by isolati g the unit removing the magnet and draining from the bottom . Magnaclean magnetic cleaner F1