Water temperature below | Faulty thermostat. | Check thermostat adjustment. |
settings at all times |
| Monitor thermostat as described |
|
| in Section III, Quarterly |
|
| Inspection. Replace if necessary. |
| Heating element not working on all | Check to see that heating |
| phases | element is working on all |
|
| phases, by checking the |
|
| resistance (ohms) value for each |
|
| element and comparing with the |
|
| chart included in Section VI. |
| Heater improperly sized | Verify heater is properly sized |
|
| for the flow rate and temperature |
|
| rise of your system. See formulas |
|
| included in Section VI. Replace |
|
| elements with proper size as |
|
| necessary. |
Relief valve discharges | Excessive temperature or pressure | Temperature and pressure relief |
continuously | in tank | valves are made to operate if the |
|
| water temperature exceeds |
|
| 210°F or water pressure exceeds |
|
| the pressure rating of the safety |
|
| relief valve. If trouble is |
|
| excessive temperature, then |
|
| thermostat is not shutting off at |
|
| the right setting and thermostat |
|
| must be replaced. |
18
