Jandy Legacy LRZM Installation And Operation Manual page 4

Page 4
Legacy
Section 10. Professional Maintenance
and Service ........................... 33
10.1 General Information .................................33
10.2 Natural-Draft Combustion System ...........33
10.3 Heater Components and Their
Operation .................................................33
10.4 Electrical Troubleshooting .......................34
10.4.1 Gas Valve ...................................34
10.4.2 Pilot Generator ...........................36
10.4.3 Fusible Link ................................36
10.4.4 Fireman Switch and External
Interlocks ....................................36
10.4.5 Limit Switches ............................36
10.4.6 Water Pressure Switch...............37
10.4.7 Temperature Control Circuit .......37
10.4.7.1 ON/OFF Toggle Switch ........37
10.4.7.2 Variable Temperature
Control ................................37
10.4.7.3 Temperature Sensor ............38
10.4.7.4 Temperature Control Circuit
Board ...................................38
Section 11. Replacement Parts .............. 38
11.1 Ordering Information ...............................38
11.2 Parts List .................................................39
11.3 General Exploded View ...........................41
11.4 Detailed Exploded View ..........................42
Model LRZM Pool/Spa Heater Installation and Operation Manual
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Table of Contents (Continued)