From inside (document excerpt):
Split-type Air-Conditioner MXZ-4C80VA MXZ-5C100VA Installation Manual ForINSTALLER ยท CONTENTS. BEFOREINSTALLATION 2. OUTDOORUNITINSTALLATION . 4 3. FLARINGWORKANDPIPECONNECTION 5. 4. PURGINGPROCEDURES,LEAKTEST,ANDTESTRUN 5. 5. RELOCATIONANDMAINTENANCE 7 Required Tools for Installation Phillipsscrewdriver FlaretoolforR40A Level GaugemanifoldforR40A Scale VacuumpumpforR40A Utilityknifeorscissors ChargehoseforR40A Torquewrench Pipecutterwithreamer Wrench(orspanner) 4mmhexagonalwrench 1.