Page 6 ENGLISH Jandy ® Pro Series, JXi ™ Gas-Fired Pool & Spa Heater | Installation & Operation ManualSection 2. Getting StartedInstall the JXi in accordance with the procedures in thismanual, local codes and ordinances, and in accordancewith the latest edition of the appropriate national code.See Section 1.7.If the heater is to operated in below freezing conditions itshould be installed in a protected outdoor shelter.See Section 3.3All gas-fi red products require correct installation toensure safe operation. The requirements for pool heatersinclude the following:• Field assembly (if required)• Appropriate site location, clearances and flooringsee Section 3• Suffi cient combustion and ventilation air• Properly sized gas meter and piping• Proper electrical wiring• Suffi cient water flowThis manual provides the information needed tomeet these requirements. Review all applications andinstallation procedures before continuing the installation.2.1 Package ContentsBefore completely unpacking the unit please inspectcarton for damage. In addition please check the cartonlabel to ensure that you have the correct fuel type andBTU rating for your application.JXI400NDIRECT IGNITIONE15XJ1000399,000JXI, USCSA Certified for installations up to 4,500 FT (1,372m), BTU outputis reduced about 4% per 1000 ft (305 m) over 4,500 ft (1,372m). Ingeneral efficiency is not affected by altitude.ALTITUDE:JXI400NDIRECT IGNITIONE15XJ1000399,000JXI, USJXI400PDIRECT IGNITIONE15XJ1232399,000JXI, USCSA Certified for installations up to 4,500 FT (1,372m), BTU outputis reduced about 4% per 1000 ft (305 m) over 4,500 ft (1,372m). Ingeneral efficiency is not affected by altitude.ALTITUDE:12345 6NOTE: 1 EA of item 4, item 5 anditem 6 will come pre-installed atthe horizontal manifold inlet.Item Description Qty.1 JXi Heater 12 VersaPlumb Sweep Elbow 13 2” Universal Union Tailpiece 2Item Description Qty.4 2” Universal Union Cap 15 2” Universal Union O-ring 36 2” Universal Union Nut 3OR