Page 2ENGLISH Jandy ® Pro Series, JXi ™ Gas-Fired Pool & Spa Heater | Installation & Operation ManualTable of ContentsSection 1. General Information ....................... 31.1 Introduction ......................................................... 31.2 Technical Assistance .......................................... 31.3 Consumer Information and Safety...................... 31.4 Warranty ............................................................. 41.5 Certification Codes and Standards..................... 41.6 General Operation Description ........................... 41.7 Safety Controls ................................................... 4Section 2. Installation Requirements.............. 52.1 Introduction ......................................................... 52.2 Materials Installer Must Provide ......................... 52.3 Specifications ..................................................... 52.4 Heater Components ........................................... 62.5 Dimensions ......................................................... 72.6 Clearances ......................................................... 72.7 Field Assembly ................................................... 82.8 Location Requirements ..................................... 8Section 3. Venting..103.1 Combustion Air Supply ..................................... 103.2 Exhaust Venting ................................................113.3 Vent Pipe Sizing and Installation ......................11Section 4. Gas Connections .......................... 154.1 Install Piping and Check Gas Supply ............... 154.2 Special Precautions for LP Gas........................ 16Section 5. Water Connections ....................... 165.1 Water Piping Connections ................................ 165.2 Pump Sizing ..................................................... 175.3 Plumbing Connections ..................................... 185.4 Water Pressure Switch Adjustment .................. 195.5 Check Valve Installation ................................... 205.6 Reversing the Water Connections ................... 205.7 Pressure Relief Valve Installation ..................... 205.8 Auxiliary Components, Chlorinators,Ozone Generators,and Sanitizing Chemicals ................................. 21Section 6. Electrical Connections ................. 216.1 General Information .......................................... 216.2 Service Access ................................................. 236.3 Main Power ...................................................... 236.4 Bonding ............................................................ 246.5 Optional Remote Controls ................................ 24Section 7. Operating Instructions ................. 277.1 First-Time Start-Up Procedure ......................... 277.2 Starting the Heater ........................................... 277.3 Normal Operation ............................................. 287.4 Operating the Controller ................................... 287.5 Setting up Heater Options ................................ 297.6 Operating the Heater ........................................ 297.7 Temperature Set Point Lock ............................. 307.8 Shutting Down the Heater ............................... 30Section 8. Maintenance .................................. 328.1 Winterizing ........................................................ 328.2 Spring Start-up ................................................. 328.3 Inspection and Service ..................................... 32Section 9. Troubleshooting ........................... 339.1 Common Problems ........................................... 339.2 Service Diagnostic Messages .......................... 359.3 Ignition Control LED Service Codes ................. 35Section 10. Professional Serviceand Maintenance .......................... 3610.1 Gas Pressure Offset Test ................................. 36Section 11. Spare Parts................................... 3611.1 Ordering Information ........................................ 3611.2 JXi Major Components ..................................... 3711.3 Cabinet Assembly Spare Parts Listand Exploded Parts Diagram ........................... 3811.4 Heat System Spare Parts List andExploded Parts Diagrams ................................. 3911.5 Water System Spare Parts List andExploded Parts Diagrams ................................. 4211.6 Electrical System Spare Parts List andExploded Parts Diagrams ................................. 43Section 12. Water Chemistry .......................... 45