The word translated "consecration" is מִלֻּא (millu) meaning "setting" or "installation" and has two different uses:
- It can mean a setting for a stone, eg, Ex 25:7, 35:9, 27, 1 Chron 29:2, etc
- Setting something or someone apart for a special use in the sense that the object or person is installed as a consecrated person as a priest.
In this latter sense, we have:
A. Animals that were set apart and installed or consecrated for a special purpose, usually sacrifice, eg, Ex 29:22, 26, 27, 31, 34, Lev 7:37, 8:22, 28, 29, 31. Note that such consecration animals were used as part of the ordination/consecration of the priests, and, to remind them and the people that they were consecrated priests.
B. Priests - consecrated/ordained = set apart as holy
Lev 8:33 - And you shall not go outside the door of the tabernacle of
meeting for seven days, until the days of your consecration are ended.
For seven days he shall consecrate you.
This is part of the consecration ceremony use to initiate/install a priest. Such consecration rams were also used as food for the priests (Lev 29:31) to remind them and the people of their on-going consecration.