Hubbell Electric Heater Company " SE " - Manual (Page 6)

6
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 operating
coils in the magnetic contactor(s). 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