Jacuzzi Manuals, User Guides and Hot Tub Instructions Full list of owners guides, manuals and hot tub instructions. Download official Jacuzzi® manuals, guides and installation instructions. Hot Tub Installation - jacuzzi Jacuzzi® Hot Tubs require 120 volt or 240 volt, depending on the spa’s size. The knowledgeable professionals at your local dealer can help you determine what you need. Many people are surprised to learn that no plumbing is required in order to install a Jacuzzi® Hot Tub. Simply fill your spa with a garden hose and balance the water as necessary.