The sustainment of the spheromak has been successfully achieved by DC helicity injection
in the FACT device at Himeji Institute of Technology. The flux conserver actually used in
the experiments has the shielding wall to prevent the plasma from being in contact with
the divertor bias coil. Equilibrium configurations of the spheromak in the flux conserver
with the shielding wall and the divertor bias coil are numerically determined by using the
combination of the finite difference and the boundary element method. Several results for
equilibrium configurations and their equilibrium quantities are presented. On the basis
of the results, the effects of the divertor bias coil on equilibrium configurations of the
helicity-injected spheromak are investigated