CONTROL THERMOSTAT
The water heater is supplied with a single stage immersion thermostatic switch that is installed and wired at the factory. The thermostat can be adjusted through a range of 100° - 195° F, (an optional low range, 30° - 110° F, is available), and is adjustable with a flat tip screwdriver. Other thermostatic controls are available, see Options below.
TEMPERATURE HIGH LIMIT SWITCH
As a safety device, either a surface mounted high temperature cut-off switch with manual reset, factory set at 205° F, or an optional immersion high temperature cut-off switch with manual reset, adjustable through a range of 100° - 240° F, is provided. In the event of an over-temperature condition, the thermostat will disengage the power from the system. The high limit must be manually reset thereafter to restart the heater.
| Manual Reset |
Surface Mounted High | |
Temperature Cut-Off Switch | Immersion High Temperature Cut-Off Switch |
MAGNETIC CONTACTOR
The magnetic contactor(s) is a heavy-duty resistive load type rated for 100,000 cycles. The contactor supplies power to the heating element(s) based on the resistive load (non-inductive) of the heater only when the thermostatic switch is engaged, thereby pulling in the contacts until the desired temperature is reached. At this point, the contacts will drop out, which in turn disconnects power from the elements. Magnetic contactors are installed only on units rated greater than 6kW.
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