Sec. 2. Money may be paid out of the city treasury only on warrant of the city fiscal officer. Unless a statute provides otherwise, the fiscal officer may draw a warrant against a fund of the city only if:
(1) an appropriation has been made for that purpose and the appropriation is not exhausted;
(2) the warrant is for a salary fixed by statute or ordinance;
(3) the warrant is for a claim allowed under section 5 of this chapter;
(4) the fiscal officer is ordered to issue the warrant under section 3 of this chapter;
(5) the warrant is for payment of a judgment that the city must pay; or
(6) the warrant is for interest due on city bonds.