Hubbell Electric Heater Company A - Manual (Page 6)

6
CONTROL THERMOSTAT
The water heater is supplied with an immersion thermostatic switch
that is installed and wired at the factory. The thermostat can be adjusted
through a range of 100° - 195° F and is adjustable with a flat tip
screwdriver.
TEMPERATURE HIGH LIMIT SWITCH
A surface mounted high temperature cut-off switch with manual reset, factory set at 205° 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
MAGNETIC CONTACTOR
The magnetic contactor(s) is a heavy-duty resistive load type
rated for 100,000 cycles. The contactor supplies power to the
heating element(s) based on the resistive load (non-inductive) of
the heater only when the thermostatic switch is engaged, thereby
pulling in the contacts until the desired temperature is reached.
At this point, the contacts will drop out, which in turn
disconnects power from the elements.
OUTER SHELL, INSULATION, AND SUPPORTS
The tank is encapsulated in 2-inches of high-density fiberglass insulation. The protective shell is
constructed of galvaneel and is coated with a durable silver hammertone finish. NSF approved
adjustable plastic legs are provided for support.