Hubbell Electric Heater Company ME 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 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

OUTER SHELL AND INSULATION

The tank is encapsulated in 2-inch thick polyurethane foam insulation. The insulation is protected by a high impact non-corroding colorized composite protective jacket.

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Contents Electric Heater Company Hubbell Electric Heater Company STRATFORD, CTTable of Contents Section Title Page Tank Connections Section I General Description and ConstructionTank Heating ElementTemperature High Limit Switch Control ThermostatOuter Shell and Insulation Options Low Water Cut-OffWater 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 / RemedySection V Servicing & Replacement of Parts Surface Temperature High Limit CUT-OFFImmersion Temperature High Limit CUT-OFF Heating Element Page Page Surface Mounted Thermostat Immersion Thermostat Relief Valve Section VI Miscellaneous Charts and Formulas Element Chart Formulas Torque Values Section VII ABS Type Approval Program Page Page