I was trawling through some sites the other day looking for some info when I stumbled across a site where they give advise for diy installation of ac splits. :(
I was curious what instruction would be given to the diyer for him to evacuate the system on completion.
Simple .... just pressurise the lines from the condensing unit and then press the little stem in the valve to purge the air. For good luck do it a second time! :eek:
Page 5. http://www.orionair.co.uk/diy%20air%...g%20manual.htm