I agree there is no exemption stating "if no appraisal was ordered you don't have to give the disclosure". It only says "if you have a 1-4 family dwelling as collateral, you must give the disclosure (or give a copy of the appraisal)". But (forgive me) it's only common sense.
Assume:
I give you the disclosure.
You ask me of a copy of the appraisal.
I tell you I didn't order an appraisal.
You ask "why did you give me this disclosure then?"
I say "because federal regulations require me to give it to you"
I've never seen a bank cited or heard of a bank being criticized for not giving the disclosure if an appraisal is not used.