Mitsubishi Electric CAHV-R450YA-HPB Installation & Operation Manual

Also see for CAHV-R450YA-HPB: Service manual

CONTENTSSafety Precautions ................................................................21. Selecting the Installation Site ............................................7[1] Installation Conditions...................................................7[2] Installation Space Requirements .................................. 82. Unit Installation ................................................................113. Water Pipe Installation.....................................................12[1] Schematic Piping Diagram and Piping SystemComponents ...............................................................12[2] Notes on Pipe Corrosion.............................................13[3] Installing the Strainer and Flow Switch .......................15[4] Water Pipe Hole Size and Location ............................164. System Configurations ....................................................17[1] Schematic Diagrams of Individual and MultipleSystems ......................................................................17[2] Switch Types and the Factory Settings.......................18[3] Configuring the Settings..............................................205. Electrical Wiring Installation.............................................43[1] Main Power Supply Wiring and Switch Capacity ........43[2] Cable Connections......................................................456. Troubleshooting...............................................................52[1] Diagnosing Problems for which No Error Codes AreAvailable .....................................................................52[2] Diagnosing Problems Using Error Codes ...................53[3] Calling for Service.......................................................577. Operating the Unit ...........................................................58[1] Initial Operation...........................................................58[2] Daily Operation ...........................................................58[3] Using the Remote Controller.......................................59[4] Using the Unit in Sub-freezing or Snowy Conditions ..698. Main Specifications..........................................................709. Maintenance ....................................................................72[1] Guidelines for Maintenance and Inspection of MajorParts ...........................................................................72Hot Water Heat Pump Unit CAHVInstallation/Operation Manual For use with R454CCAHV-R450YA-HPB(-BS)Thoroughly read this manual prior to use.Save this manual for future reference.Some of the items in this manual may not apply to made-to-order units.Make sure that this manual is passed on to the end users.