Hubbell Electric Heater Company ME manual Options, Low Water Cut-Off

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OPTIONS

The following optional features may be included in your water heater. Reference included drawing specific to your heater for further details.

Low Water Cut-Off

Used as a safety device, the electronic low water cut- off is used to detect a low water situation and disengage the operating coils in the magnetic contactor(s). Once the condition is remedied, the low water cut-off switch is automatically reset.

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.

Electro-Mechanical Timer

An electro-mechanical 7-day time clock with battery back-up may be supplied for specific timing operations. A set of instructions will be supplied with the timer.

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Contents Electric Heater Company STRATFORD, CT Hubbell Electric Heater CompanyTable of Contents Section Title Page Heating Element Section I General Description and ConstructionTank Tank ConnectionsControl Thermostat Temperature High Limit SwitchOuter Shell and Insulation Low Water Cut-Off OptionsSecuring of Heater Water Heater PlacementMounting Dimensions Filling the Heater Piping InstallationFinal Checks Electrical InstallationQuarterly Inspection Section III Scheduled Maintenance and OperationMaintenance and Operation FreezingAnnual Inspection Symptom Probable Cause Corrective Action / Remedy Section IV TroubleshootingSurface Temperature High Limit CUT-OFF Section V Servicing & Replacement of PartsImmersion 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