Chazzans Aneinu

During Shacharit, only the Chazzan recites Aneinu. Therefore, one who is not fasting (or who anticipates that he won’t be able to finish the fast) shouldn’t serve as Chazzan.

[In the unlikely event that the Chazzan is not fasting, or less than three congregants are fasting: Instead of reciting Aneinu between Goal Yisrael and R’faeinu, the Chazzan includes Aneinu in the Brachah of Sh’mah Koleinu, and concludes the Brachah regularly; i.e. Shomea Tefillah.]

A Chazan who forgot to recite Aneinu:

• if he remembered before reciting Hashem’s name at the end of the Brachah of R’faeinu, he recites Aneinu immediately, and then repeats the Brachah of R’faeinu;
• if he already concluded the Brachah of R’faeinu, he recites Aneinu in the Brachah of Sh’ma Koleinu, and concludes the Brachah with a double conclusion; i.e. Ha’one B’eit Tzara V’shomea Tefillah;
• if he already concluded the Brachah of Sh’ma Koleinu, he recites Aneinu as a separate Brachah immediately after the Brachah of Sim Shalom.