This is the instruction manual for the Hitachi hot water pressure pump, providing information on installation and usage precautions.
This manual provides safety precautions, installation steps, wiring instructions and operating procedures for the Hitachi H‑PB40FV and H‑PB100FV indoor water‑pressure pumps. It also covers maintenance, troubleshooting and warranty information.
The document emphasizes that installation must be performed by qualified installers, outlines proper handling of the power cord, and gives guidance on freeze‑protection and proper use of the flow switch during operation. This manual is written in Japanese.