I am new (both to posting and to this site) so please bare with me. The lab has some very old pneumatic Trane VAV controllers. The tag says use document VAV-IN-5 for calibration instructions but we haven't been able to locate any except for VAV-IN-1 I found in another thread. The box shown in the VAV-IN-1 is similar but a bit different.

I tried to find this VAV-IN-5 on the internet and at Trane's website but no dice. Does anyone have this document and any other literature that explains/shows how these boxes work and how to set them up properly?
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