I have a carrier thermostat (33CSSP2-FC) that needs to be replaced. I have the owners manual and it says it has a locking cover w/ Tamper proof screws but does not mention how to remove it anywhere. I couldn't even see the screws to attempt to remove it. How do I go about removing it from the wall? Thanks!

Read them

http://www.docs.hvacpartners.com/idc/groups/public/documents/techlit/33cs-56si.pdf


http://www.docs.hvacpartners.com/idc/groups/public/documents/techlit/33cs-18so.pdf


http://www.docs.hvacpartners.com/idc/groups/public/documents/techlit/33cs-23ps.pdf