Hubbell Electric Heater Company MSE manual Control Thermostat, Temperature High Limit Switch

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CONTROL THERMOSTAT

The water heater is supplied with either a surface mounted or immersion thermostatic switch that is installed and wired at the factory. See drawing for specific details. The surface mounted thermostat can be adjusted through a range of 110° - 170° F. The immersion thermostat can be adjusted through a range of 100° - 190° F. Both thermostats are adjustable with a flat tip screwdriver.

Surface Mounted Thermostat

Immersion Thermostat

TEMPERATURE HIGH LIMIT SWITCH

As a safety device, either a surface mounted high temperature cut-off switch with manual reset, factory set at 190° F, or an immersion high temperature cut-off switch with manual reset, factory set at 180° F, is provided. In the event of an over-temperature condition, the thermostat will disengage the operating coils in the magnetic contactor(s). 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

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Contents Electric Heater Company Hubbell Electric Heater Company BOXSTRATFORD, CT Table of Contents Section Title Page Tank Connections Section I General Description and ConstructionTank Heating ElementTemperature High Limit Switch Control ThermostatOptions Magnetic ContactorOuter Shell and Insulation Low Water Cut-OffDial Temperature and Pressure Gauge Fused Low Voltage TransformerVacuum Relief Valve Individually Fused Elements On/Off SwitchElectro-Mechanical Timer Built-in Circuit BreakerWater Heater Placement Securing of HeaterMounting Dimensions Piping Installation Filling the HeaterElectrical Installation Final ChecksFreezing Section III Scheduled Maintenance and OperationMaintenance and Operation Quarterly InspectionAnnual Inspection Section IV Troubleshooting Symptom Probable Cause Corrective Action / RemedyPage Section V Servicing & Replacement of Parts Surface Temperature High Limit CUT-OFFImmersion Temperature High Limit CUT-OFF Heating Element Page Surface Mounted Thermostat Immersion Thermostat Magnetic Contactor Relief Valve Section VI Miscellaneous Charts and Formulas Element Chart FormulasTorque Values Section VII ABS Type Approval Program Page Page