Hi guys,

I am currently trying to supply my customers with more than just a signed a work sheet saying their system has been maintained(as this is all the company I work for provide). My boss seems reluctant to put the effort in so I plan on taking matters into my own hands.

only thing is that I've only ever plotted a mollier chart when I done my 2079.

any idea where I can buy charts for various gases? And also where I would be looking to get my temperature readings off an air con vrv on heating and cooling modes? Might seem like a stupid question but i just want to make sure I get this correct first time so my company enforces them.

Thanks in advance guys.