Specifications
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Black
Black
Blue
Red
Blue
Control Circuit - The standard single-phase control circuit consists of a high limit control switch with a reset buon,
upper thermostat, lower thermostat, two heang elements and wires. The upper thermostat rst sends electrical
energy to the upper element unl the water temperature in the upper third of the tank reaches the thermostat
seng. Power is then transferred to the lower element unl the remaining water reaches the lower thermostat
seng. If the water temperature exceeds 170°F the high limit control switch will trip shung o power to the
elements. Single element water heaters have one element mounted at the boom of the tank controlled by a single
thermostat and high limit switch.
Upper
Thermostat
&
High Limit
Control
Standard Electric Water Heater Parts
Yellow
Upper
Element
Lower
Thermostat
Yellow
Lower
Element
Reset
Buon
TOD Wiring Diagram
Reset
Buon
APCOM Wiring Diagram
Black
Yellow
Blue
Upper
Thermostat
&
High Limit
Control
Red
Black
Upper
Element
Lower
Element
Blue
Yellow