Page 4
Legacy
™
Model LRZM Pool/Spa Heater Installation and Operation Manual
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
Table of Contents (Continued)
Summary of Contents for Legacy LRZM
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