Hubbell Electric Heater Company SLN manual Outer Shell And Insulation, Thermistor Clip

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.

THERMISTOR CLIP

The water heater is supplied with a thermistor clip located just above the heating coil tank flange for attaching a sensing probe to the water heater tank. Temperature sensors and controls are not included with the water heater.

OPTIONAL BACK-UP ELECTRIC HEATING SYSTEM

Back-up Electric Heating Element

The water heater may be supplied with an electric immersion heating element assembly(s), composed of a copper sheathed element(s) that are brazed into a brass flange. Each assembly is fastened to a corresponding tank flange using a gasket and four (4) 3/8-16 x 1-inch long hex head steel bolts and nuts. See drawing for voltage and power ratings.

Control Thermostat

The water heater may be supplied with either a surface mounted or immersion thermostatic switch to control the back-up electric heating system. 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

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