Hubbell Electric Heater Company MSE manual Fused Low Voltage Transformer, Vacuum Relief Valve

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Fused Low Voltage Transformer

A fused low voltage transformer may be supplied. This option is used to step down higher voltages to 120-volt for the control circuit.

Dial Temperature and Pressure Gauge

A combination temperature (70° - 250° F) and pressure (0 – 200 psi) gauge with 2½-inch dial may be supplied for in-line installation (shipped loose) or factory installed in the tank.

Vacuum Relief Valve

A vacuum relief valve may be provided with the unit to reduce the risk of back siphonage and back pressure of the system. The valve will be shipped loose for in-line installation. Instructions for installation are provided with the valve.

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Contents Electric Heater Company STRATFORD, CT Hubbell Electric Heater CompanyBOX Table of Contents Section Title Page Section I General Description and Construction TankTank Connections Heating ElementTemperature High Limit Switch Control ThermostatMagnetic Contactor Outer Shell and InsulationOptions Low Water Cut-OffVacuum Relief Valve Dial Temperature and Pressure GaugeFused Low Voltage Transformer On/Off Switch Electro-Mechanical TimerIndividually Fused Elements Built-in Circuit BreakerWater Heater Placement Securing of HeaterMounting Dimensions Piping Installation Filling the HeaterElectrical Installation Final ChecksSection III Scheduled Maintenance and Operation Maintenance and OperationFreezing 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